{"id":344399,"date":"2024-09-24T17:52:18","date_gmt":"2024-09-24T15:52:18","guid":{"rendered":"https:\/\/climatescience.press\/?p=344399"},"modified":"2024-09-24T17:52:20","modified_gmt":"2024-09-24T15:52:20","slug":"the-strongest-atmospheric-river-on-record-for-the-gulf-of-alaska","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=344399","title":{"rendered":"The Strongest Atmospheric River on Record for the Gulf of Alaska?"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Cliff Mass Weather Blog<\/a><\/p>\n\n\n\n

By CliffMass<\/a><\/p>\n\n\n\n

The atmospheric river currently over the Gulf of Alaska may be the strongest on record in that area.<\/p>\n\n\n\n

The latest model runs show extreme values of the key measure of atmospheric river strength, vertically integrated moisture transport (IVT)<\/strong>, which describes how much water vapor is being moved over a period of time.<\/p>\n\n\n\n

Below is the map  of IVT for this morning, with values exceeding 1900.  I have personally never seen anything like it.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

An estimate of the strongest atmospheric river\u00a0 over observed for 1990-2019 by Dr.\u00a0 Lexi Henny of NASA\/Goddard suggested this is the strongest atmospheric river during that period of record.\u00a0\u00a0Impressive<\/strong>.<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n
\"\"<\/figure>\n\n\n\n

The plume of moisture was very apparent in water vapor satellite imagery this afternoon (below). Do you see the southwest-northeast directed plume aimed at SE Alaska and BC? Some of the associated clouds have moved into Washington.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

This atmospheric river is predicted to hit land as an\u00a0AR-5<\/strong>, the strongest level observed.\u00a0 We can be thankful that the center of the river will make landfall north of Washington State, where only AR-2 levels should occur on the northern Olympic Coast.<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

By Tuesday, as much as a foot of rain will fall over the coastal terrain of BC<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Strong atmospheric rivers are not infrequent over SE Alaska and BC this time of year, with the path of the moisture plumes reaching Washington State in November. <\/strong><\/p>\n\n\n\n

The fact we are in a neutral to La Nina year means that there is a higher probability of more rain than last year (an El Nino year)…something shown for the western Washington lowlands below.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

My advice.\u00a0 Make sure you have a decent umbrella.<\/strong><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

The atmospheric river currently over the Gulf of Alaska may be the strongest on record in that area.<\/p>\n

The latest model runs show extreme values of the key measure of atmospheric river strength, vertically integrated moisture transport (IVT), which describes how much water vapor is being moved over a period of time.<\/p>\n","protected":false},"author":121246920,"featured_media":344407,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691830692,691830693,691819657,691818473],"class_list":{"0":"post-344399","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-atmospheric-river","9":"tag-gulf-of-alaska","10":"tag-water-vapor","11":"tag-weather","13":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2024\/09\/0Screenshot-2024-09-22-at-3.11.17-PM.png?fit=3092%2C1476&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1rAP","jetpack-related-posts":[{"id":367426,"url":"https:\/\/climatescience.press\/?p=367426","url_meta":{"origin":344399,"position":0},"title":"Why do Atmospheric Rivers Occur?","author":"uwe.roland.gross","date":"24\/02\/2025","format":false,"excerpt":"A significant atmospheric river event will occur tomorrow (Sunday) and Monday, with heavy precipitation in the mountains and South Sound.","rel":"","context":"In \"atmospheric rivers (ARs)\"","block_context":{"text":"atmospheric rivers (ARs)","link":"https:\/\/climatescience.press\/?tag=atmospheric-rivers-ars"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0Screenshot-2025-02-22-at-10.28.40-AM.png?fit=1200%2C952&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0Screenshot-2025-02-22-at-10.28.40-AM.png?fit=1200%2C952&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0Screenshot-2025-02-22-at-10.28.40-AM.png?fit=1200%2C952&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0Screenshot-2025-02-22-at-10.28.40-AM.png?fit=1200%2C952&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2025\/02\/0Screenshot-2025-02-22-at-10.28.40-AM.png?fit=1200%2C952&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":357825,"url":"https:\/\/climatescience.press\/?p=357825","url_meta":{"origin":344399,"position":1},"title":"An Intense Christmas Atmospheric River. 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