{"id":1837623,"date":"2026-03-20T17:50:09","date_gmt":"2026-03-20T14:50:09","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=1837623"},"modified":"2026-03-20T17:50:09","modified_gmt":"2026-03-20T14:50:09","slug":"why-la-nina-might-explain-dismal-western-snowpacks-and-what-to-expect-for-possible-el-nino-next-winter","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=1837623","title":{"rendered":"Why La Ni\u00f1a Might Explain Dismal Western Snowpacks and What to Expect for Possible El Ni\u00f1o Next Winter"},"content":{"rendered":"<div class=\"entry-content\">\n<figure id=\"attachment_349839\" aria-describedby=\"caption-attachment-349839\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-349839 lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAGqAQMAAACh3GetAAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADhJREFUeNrtwQENAAAAwqD3T20ON6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD4NobKAAFhB0TLAAAAAElFTkSuQmCC\" alt width=\"640\" height=\"426\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=640%2C426&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=1200%2C799&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=768%2C511&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=1536%2C1022&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=600%2C399&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"426\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-349839\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2025\/02\/palisades7.jpg?resize=640%2C426&amp;ssl=1\" alt width=\"640\" height=\"426\" data-eio=\"l\"><figcaption id=\"caption-attachment-349839\" class=\"wp-caption-text\">Could El Ni\u00f1o cause two bad winters in a row? | Photo: Zach Armstrong<\/figcaption><\/figure>\n<div class=\"ai-viewports ai-viewport-2 ai-viewport-3 ai-insert-2-51044349\" style=\"margin: 8px auto;text-align: center;clear: both\" data-insertion-position=\"prepend\" data-selector=\".ai-insert-2-51044349\" data-insertion-no-dbg data-code=\"PGRpdiBjbGFzcz0nY29kZS1ibG9jayBjb2RlLWJsb2NrLTInIHN0eWxlPSdtYXJnaW46IDhweCBhdXRvOyB0ZXh0LWFsaWduOiBjZW50ZXI7IGRpc3BsYXk6IGJsb2NrOyBjbGVhcjogYm90aDsnPgo8ZGl2IHN0eWxlPSJkaXNwbGF5OmZsZXg7anVzdGlmeS1jb250ZW50OmNlbnRlcjt3aWR0aDoxMDAlOyI+CiAgPGRpdiBjbGFzcz0iZ3B0MzIwLXBsYWNlaG9sZGVyIiBzdHlsZT0ibWluLXdpZHRoOjMyMHB4O21pbi1oZWlnaHQ6NTBweDsiPjwvZGl2Pgo8L2Rpdj4KPHNjcmlwdD4KICB3aW5kb3cuX2dwdDMyMENvdW50ID0gKHdpbmRvdy5fZ3B0MzIwQ291bnQgfHwgMCkgKyAxOwogIHZhciBzbG90SWQgPSAnZ3B0MzIwLScgKyB3aW5kb3cuX2dwdDMyMENvdW50OwogIGRvY3VtZW50LnF1ZXJ5U2VsZWN0b3JBbGwoJy5ncHQzMjAtcGxhY2Vob2xkZXI6bm90KFtpZF0pJylbMF0uaWQgPSBzbG90SWQ7CiAgZ29vZ2xldGFnLmNtZC5wdXNoKGZ1bmN0aW9uKCkgeyBnb29nbGV0YWcuZGlzcGxheShzbG90SWQpOyB9KTsKPC9zY3JpcHQ+PC9kaXY+Cg==\" data-block=\"2\"><\/div>\n<div class=\"ai-viewports ai-viewport-1 ai-insert-1-84958065\" style=\"margin: 8px auto;text-align: center;clear: both\" data-insertion-position=\"prepend\" data-selector=\".ai-insert-1-84958065\" data-insertion-no-dbg data-code=\"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\" data-block=\"1\"><\/div>\n<p><strong>The ski industry is currently going through one of the most important parts of the ski season.<\/strong> Nope, it\u2019s not the arrival of endlessly sunny days and predictable <a id=\"308827\" href=\"https:\/\/snowbrains.com\/sugar-bowl-ca-report-slarvey-in-the-sunshine\/\">slarvy slashing<\/a>, nor is it the deluge of college students flooding into the Rockies for spring break. Early spring is a time when many ski areas launch their season pass sales, hoping to secure most of their revenue for next season. Many ski areas in the Midwest and East Coast are riding a wave of record snowfall and a winter to remember, but for ski areas across the West, convincing people that there probably won\u2019t be two horrible winters in a row may be a formidable challenge. The National Oceanic and Atmospheric Administration\u2019s most recent ENSO Forecast predicts a shift from La Ni\u00f1a to El Ni\u00f1o conditions by the start of next ski season.<\/p>\n<ul>\n<li><strong>Related: <\/strong><a id=\"395723\" href=\"https:\/\/snowbrains.com\/la-nina-fades-as-noaa-forecasters-expect-el-nino-by-summer-with-significant-impact-on-winter-2026-27\/\"><em><strong>La Ni\u00f1a Fades as NOAA Expects El Ni\u00f1o by Summer With Significant Impact on Winter 2026-27<\/strong><\/em><\/a><\/li>\n<\/ul>\n<p><strong>Many North American skiers are familiar with the El Ni\u00f1o Southern Oscillation, but how well does this model of long-term weather patterns stack up against the turbulent and chaotic nature of our atmosphere?<\/strong> In the context of one of the worst winters on record occurring during a La Ni\u00f1a year, which should have been a winter to remember for different reasons, it is worth taking a moment to remind ourselves of the physics of El Ni\u00f1o and to take a look at some other recent El Ni\u00f1o winters.<\/p>\n<ul>\n<li><strong>Related: <a id=\"383068\" href=\"https:\/\/snowbrains.com\/noaa-launches-a-i-enhanced-versions-of-gfs-and-gefs-weather-models\/\"><em>NOAA Launches A.I.-Enhanced Versions of GFS and GEFS Weather Models<\/em><\/a><\/strong><\/li>\n<\/ul>\n<p><strong>El Ni\u00f1o conditions mean that sea surface temperatures in the tropical Pacific Ocean are warmer than usual. <\/strong>These warmer ocean temperatures cause a weakening of the trade winds blowing across the Pacific near the equator, and a dip in the jet stream at higher latitudes. In North America, this mechanism typically means that a drier winter is expected across the Pacific Northwest and Northern Rockies, and a wetter winter is expected in the Sierra Nevada and across the Southwest. The opposite pattern, called La Ni\u00f1a, involves colder ocean temperatures, stronger trade winds, and snowier winters across the Northern part of the continent.<\/p>\n<ul>\n<li><strong>Related: <a id=\"388094\" href=\"https:\/\/snowbrains.com\/weather-and-snowpack-update-for-the-united-states\/\"><em>Weather and Snowpack Update for the United States<\/em><\/a><\/strong><\/li>\n<\/ul>\n<p><strong>Using the wealth of climate data NOAA has been tracking, we can look at what El Ni\u00f1o conditions have meant for snowfall in the past.<\/strong> The map below shows the difference in seasonal snowfall between El Ni\u00f1o years and the thirty-year average, with red indicating less snow than average and blue indicating more. The Cascades are evident as a strong red line running through Oregon and Washington, and an even larger red blob extends from Idaho\u2019s Panhandle and Western Montana into Alberta and the Western part of British Columbia. Meanwhile, the Sierra Nevada appears to have above-average snowfall, as does Utah, parts of Colorado, and most of the mountains in the Southwest. This pattern seems generally consistent with a snowier winter in mountain ranges closer to the equator and drier conditions in mountain ranges farther north. At least according to this map, if you\u2019re a Pacific Northwest skier, I\u2019d think about booking a trip to Lake Tahoe or Utah next winter.<\/p>\n<figure id=\"attachment_395911\" aria-describedby=\"caption-attachment-395911\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-395911 lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAI0AQMAAAC3WAoDAAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAENJREFUeNrtwTEBAAAAwqD1T+1vBqAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgDsnQAAWdc9N8AAAAASUVORK5CYII=\" alt width=\"640\" height=\"564\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=640%2C564&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=1200%2C1057&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=300%2C264&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=768%2C676&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=1536%2C1353&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=600%2C528&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"564\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-395911\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninosnow.jpg?resize=640%2C564&amp;ssl=1\" alt width=\"640\" height=\"564\" data-eio=\"l\"><figcaption id=\"caption-attachment-395911\" class=\"wp-caption-text\">El Ni\u00f1o winters are typically associated with less snowfall across the Pacific Northwest, Idaho, and Montana, and more snowfall in the Sierra Nevada, Utah, and the Southwest. | Image: National Oceanic and Atmospheric Administration<\/figcaption><\/figure>\n<p><strong>The data on the map above show the average snowfall during winters with a moderate to strong El Ni\u00f1o index.<\/strong> Looking at these winters individually, using data from SNOTEL sites, the broader trend appears to be reflected at least somewhat in each El Ni\u00f1o winter, with a few exceptions. In 2003, California, Nevada, and Utah all had below-average snowpack, while much of Idaho and Montana had slightly above-average snowpack. Only a small chunk of Arizona and New Mexico was far above average. Similarly, in 1992, almost everywhere in the West was hurting except for the mountain ranges near the Four Corners Area. In 1998, there was plenty of snow everywhere except in the furthest reaches of Northern Montana, and in 2016, despite strong El Ni\u00f1o conditions, the Southwest was far below average. Because of the role that local weather patterns, orographics, and other long-term weather trends play in setting the weather, regional exceptions to the El Ni\u00f1o pattern are present in pretty much every El Ni\u00f1o winter.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"549\" class=\"wp-image-396010 aligncenter lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAIlAQMAAAB\/0ts9AAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEJJREFUeNrtwTEBAAAAwqD1T20KP6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAjgattQABWo34DgAAAABJRU5ErkJggg==\" alt data-id=\"396010\" data-aspect-ratio=\"640 \/ 549\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=640%2C549&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=1200%2C1030&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=300%2C258&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=768%2C659&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=1536%2C1318&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=600%2C515&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"549\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"549\" class=\"wp-image-396010 aligncenter\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2016.jpg?resize=640%2C549&amp;ssl=1\" alt data-id=\"396010\" data-aspect-ratio=\"640 \/ 549\" data-eio=\"l\"><\/p>\n<div class=\"ai-viewports ai-viewport-2 ai-viewport-3 ai-insert-4-85967023\" style=\"margin: 8px auto;text-align: center;clear: both\" data-insertion-position=\"prepend\" data-selector=\".ai-insert-4-85967023\" data-insertion-no-dbg 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src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAImAQAAAADr8wZ9AAAAAnRSTlMAAHaTzTgAAABCSURBVHja7cEBDQAAAMKg909tDjegAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJ4MrgYAAXhfJMwAAAAASUVORK5CYII=\" alt data-id=\"396016\" data-aspect-ratio=\"640 \/ 550\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2024.jpg?resize=640%2C550&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2024.jpg?resize=1200%2C1031&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2024.jpg?resize=300%2C258&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2024.jpg?resize=768%2C660&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2024.jpg?resize=1536%2C1320&amp;ssl=1 1536w, 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src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAIlAQMAAAB\/0ts9AAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEJJREFUeNrtwTEBAAAAwqD1T20KP6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAjgattQABWo34DgAAAABJRU5ErkJggg==\" alt data-id=\"396012\" data-aspect-ratio=\"640 \/ 549\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=640%2C549&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=1200%2C1029&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=300%2C257&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=768%2C658&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=1536%2C1317&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=600%2C514&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"549\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"549\" class=\"wp-image-396012 aligncenter\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe2003.jpg?resize=640%2C549&amp;ssl=1\" alt data-id=\"396012\" data-aspect-ratio=\"640 \/ 549\" data-eio=\"l\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"550\" class=\"wp-image-396011 aligncenter lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAImAQAAAADr8wZ9AAAAAnRSTlMAAHaTzTgAAABCSURBVHja7cEBDQAAAMKg909tDjegAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJ4MrgYAAXhfJMwAAAAASUVORK5CYII=\" alt data-id=\"396011\" data-aspect-ratio=\"640 \/ 550\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=640%2C550&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=1200%2C1032&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=300%2C258&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=768%2C660&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=1536%2C1321&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=600%2C516&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"550\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"550\" class=\"wp-image-396011 aligncenter\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninoswe1995.jpg?resize=640%2C550&amp;ssl=1\" alt data-id=\"396011\" data-aspect-ratio=\"640 \/ 550\" data-eio=\"l\"><\/p>\n<div class=\"ai-viewports ai-viewport-2 ai-viewport-3 ai-insert-4-62991760\" style=\"margin: 8px auto;text-align: center;clear: both\" data-insertion-position=\"prepend\" data-selector=\".ai-insert-4-62991760\" data-insertion-no-dbg 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data-code=\"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\" data-block=\"3\"><\/div>\n<p><strong>Astute observers may have noticed in the map above that the deep red colors abruptly end in Southeast Alaska and switch to deep blue, indicating a much snowier winter.<\/strong> Alaska is certainly far away from the equator, so the snowier winters seem to contradict the general trend for El Ni\u00f1o in North America. However, Alaska is a special place, and Southern Alaska is home not only to incredible heliskiing but also to the Aleutian Low. This semi-permanent storm sits somewhere near the Aleutian Islands and pelts Southern Alaska with snow all winter long, occasionally sending a few storms further south to share the goods with the rest of us. El Ni\u00f1o\u2019s interactions with other weather patterns, such as the Aleutian Low, are poorly understood, and recent research suggests that the Aleutian Low may play a major role in setting the phase of the El Ni\u00f1o cycle.<\/p>\n<p><strong>Snowfall is brought to the mountains by low-pressure storm systems, and another way to understand El Ni\u00f1o\u2019s impacts on winter weather is to examine atmospheric pressure anomalies during El Ni\u00f1o winters.<\/strong> The map below shows deviations in atmospheric pressure during El Ni\u00f1o or La Ni\u00f1a winters. Instead of thinking directly in terms of pressure, atmospheric scientists like to think in terms of what height in the atmosphere a particular pressure might be found, so the colors represent the height of the 300 millibar pressure line, with redder colors corresponding to higher-than-normal atmospheric pressures, and bluer colors corresponding to lower pressures and stormier weather. El Ni\u00f1o is associated with higher-than-normal pressures across the Northern Rockies and Cascades, and near-neutral pressures over the Sierra Nevada and Southwest, but with a huge low-pressure anomaly in the Pacific capable of slinging storms onto the continent.<\/p>\n<figure id=\"attachment_395915\" aria-describedby=\"caption-attachment-395915\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-395915 lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAFWAQMAAADDjL7PAAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADJJREFUeNrtwTEBAAAAwqD1T20KP6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAICvAWw2AAGuqiyBAAAAAElFTkSuQmCC\" alt width=\"640\" height=\"342\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=640%2C342&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=1200%2C641&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=300%2C160&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=768%2C410&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=1536%2C820&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=600%2C320&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"342\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-395915\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/elninopressure.jpg?resize=640%2C342&amp;ssl=1\" alt width=\"640\" height=\"342\" data-eio=\"l\"><figcaption id=\"caption-attachment-395915\" class=\"wp-caption-text\">Warmer ocean conditions near the equator create lower-than-average pressures farther north in the Pacific, and vice versa during La Ni\u00f1a conditions. | Image: National Oceanic and Atmospheric Administration<\/figcaption><\/figure>\n<p><strong>The pressure anomaly for La Ni\u00f1a appears to be almost exactly the opposite, with high pressure throughout much of the Pacific and low pressure across Canada. <\/strong>For all of the weather nerds, like myself, who have been poring over maps of atmospheric pressure anomalies all winter, a huge dome of high pressure in the Pacific looks awfully familiar. For much of this winter, a very similar dome of high pressure has been centered over California or just off the coast, much farther east than the average La Ni\u00f1a conditions shown above. This high-pressure system blocked almost all storms that tried to form in the Pacific from reaching the mountains, leading to the long January drought. Thus, it appears that La Ni\u00f1a did, in fact, show up this winter in terms of ocean temperatures and atmospheric pressure anomalies, but the positioning of those anomalies led to far less snow than average.<\/p>\n<figure id=\"attachment_396026\" aria-describedby=\"caption-attachment-396026\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-396026 lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAFTAQMAAACTQS98AAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAADFJREFUeNrtwTEBAAAAwqD1T20LL6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOBqa0MAAS6UagwAAAAASUVORK5CYII=\" alt width=\"640\" height=\"339\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=640%2C339&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=1200%2C635&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=300%2C159&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=768%2C407&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=1536%2C813&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=600%2C318&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?w=1896&amp;ssl=1 1896w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"339\"><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" class=\"wp-image-396026\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/weathermap20260115.jpg?resize=640%2C339&amp;ssl=1\" alt width=\"640\" height=\"339\" data-eio=\"l\"><figcaption id=\"caption-attachment-396026\" class=\"wp-caption-text\">In mid-January 2026, a huge dome of high pressure kept storms from entering the Western part of the continent and forced strong winds from the Arctic into the Midwest and East Coast, bringing plenty of snow along with them. | Image: Zach Armstrong<\/figcaption><\/figure>\n<p><strong>The positioning of the high-pressure system over California may also explain why the Midwest and East Coast had such a phenomenal ski season this winter.<\/strong> In mid-January, when ski areas across the Midwest and East Coast were getting hammered with snow, a high-pressure system off the West Coast was driving strong winds and bringing cold Arctic air across the eastern part of the continent. Even now, as temperatures soar at ski areas throughout the West, the Midwest and East Coast were again buried in snow over the weekend.<\/p>\n<p><strong>Similar to El Ni\u00f1o winters, on a winter-by-winter basis, La Ni\u00f1a patterns can be identified in the SNOTEL data, but there are many instances of significant deviations from expected behavior.<\/strong> In 2000, 2008, and 2011, essentially every mountain range reported an average or above-average snowpack. Despite strong La Ni\u00f1a conditions in 1999, the Sierra Nevada had a well-above-average snowpack; in 2022, most mountain ranges were below average, except for a few basins in the Southwest, which looked more like an El Ni\u00f1o year. Similar to strong and moderate El Ni\u00f1o years, plenty of exceptions can be found in specific mountain ranges in strong and moderate La Ni\u00f1a years.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"537\" class=\"wp-image-396024 aligncenter lazyload\" src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAIZAQMAAAAMahzrAAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEFJREFUeNrtwTEBAAAAwqD1T20ND6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABODanpAAGhKYR+AAAAAElFTkSuQmCC\" alt data-id=\"396024\" data-aspect-ratio=\"640 \/ 537\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe2011.jpg?resize=640%2C537&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe2011.jpg?resize=1200%2C1007&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe2011.jpg?resize=300%2C252&amp;ssl=1 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src=\"image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAoAAAAIbAQMAAABBor3gAAAABlBMVEUAAAD\/\/\/+l2Z\/dAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEFJREFUeNrtwTEBAAAAwqD1T20Hb6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4DaqLAAFpERV2AAAAAElFTkSuQmCC\" alt data-id=\"396017\" data-aspect-ratio=\"640 \/ 539\" data-src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=640%2C539&amp;ssl=1\" data-srcset=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=1200%2C1010&amp;ssl=1 1200w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=300%2C253&amp;ssl=1 300w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=768%2C646&amp;ssl=1 768w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=1536%2C1293&amp;ssl=1 1536w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=600%2C505&amp;ssl=1 600w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?w=1920&amp;ssl=1 1920w, https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?w=1280&amp;ssl=1 1280w\" data-sizes=\"auto\" data-eio-rwidth=\"640\" data-eio-rheight=\"539\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" data-recalc-dims=\"1\" width=\"640\" height=\"539\" class=\"wp-image-396017 aligncenter\" src=\"https:\/\/i0.wp.com\/snowbrains.com\/wp-content\/uploads\/2026\/03\/laninaswe1996.jpg?resize=640%2C539&amp;ssl=1\" alt data-id=\"396017\" data-aspect-ratio=\"640 \/ 539\" data-eio=\"l\"><\/p>\n<p><strong>The El Ni\u00f1o Southern Oscillation plays an important role in setting the winter weather patterns for North America.<\/strong> Yet, the atmosphere is a wild, unpredictable place, and sometimes even expected weather patterns, like this winter\u2019s high-pressure system in the Pacific, can lead to unexpected results. So, keep an eye on those weather forecasts, but maybe don\u2019t put those powder boards up for sale quite yet.<\/p>\n<p><strong>More From Zach Armstrong:<\/strong><\/p>\n<ul>\n<li><em><a id=\"393812\" href=\"https:\/\/snowbrains.com\/how-the-epic-pass-changed-skiing-a-data-driven-history-of-vail-resorts\/\"><strong>How The Epic Pass Changed Skiing: A Data Driven History of Vail Resorts<\/strong><\/a><\/em><\/li>\n<li><em><a href=\"https:\/\/snowbrains.com\/i\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>How Will This Winter Affect the 40 Million People Living in the Colorado River Basin?<\/strong><\/a><\/em><\/li>\n<li><em><strong><a href=\"https:\/\/snowbrains.com\/antarcticas-ice-sheet-is-growing\/\" target=\"_blank\" rel=\"noreferrer noopener\">Antarctica\u2019s Ice Sheet Is\u2026Growing?<\/a><\/strong><\/em><\/li>\n<li><em><strong><a href=\"https:\/\/snowbrains.com\/noaa-launches-a-i-enhanced-versions-of-gfs-and-gefs-weather-models\/\" target=\"_blank\" rel=\"noreferrer noopener\">NOAA Launches A.I.-Enhanced Versions of GFS and GEFS Weather Models<\/a><\/strong><\/em><\/li>\n<li><strong><a href=\"https:\/\/snowbrains.com\/history-with-snowbrains-the-incredible-notes-from-a-swiss-avalanche-researchers-travels-to-western-usa-in-1949\/\" target=\"_blank\" rel=\"noreferrer noopener\"><em>History with SnowBrains: The Incredible Notes from a Swiss Avalanche Researcher\u2019s Travels to Western USA in 1949<\/em><\/a><\/strong><\/li>\n<\/ul>\n<p><!-- CONTENT END 2 -->\n\t\t\t<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Could El Ni\u00f1o cause two bad winters in a row? | Photo: Zach Armstrong The ski industry is currently going through one of the most important parts of the ski season. Nope, it\u2019s not the arrival of endlessly sunny days and predictable slarvy slashing, nor is it the deluge of college students flooding into the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[226,267],"class_list":["post-1837623","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-crawlmanager","tag-snowbrains-com"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1837623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1837623"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/1837623\/revisions"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1837623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1837623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1837623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}