{"id":55820,"date":"2023-12-04T21:53:32","date_gmt":"2023-12-04T21:53:32","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=55820"},"modified":"2023-12-04T21:53:32","modified_gmt":"2023-12-04T21:53:32","slug":"wet-weather-in-the-pacific-northwest","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/55820","title":{"rendered":"Wet weather in the Pacific Northwest"},"content":{"rendered":"\n<figure class=\"wp-block-video\"><video height=\"884\" style=\"aspect-ratio: 1574 \/ 884;\" width=\"1574\" controls loop src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/goeswest_abi_radf_true_color_night_s20231201214020_e20231204204021_f72.mp4\"><\/video><figcaption class=\"wp-element-caption\">True Color (daytime) and Night Microphysics RGB (nighttime) hourly from 2140 UTC on 1 December through 2040 UTC on 4 December 2023<\/figcaption><\/figure>\n\n\n\n<p>Hourly GOES-18 Hemispheric views, above, from 2140 UTC on 1 December to 2040 UTC on 4 December, (from the <a href=\"https:\/\/geosphere.ssec.wisc.edu\/#coordinate:0,0;satellite:goeswest;\">CSPP Geosphere site<\/a>) show the development of a strong system in the Gulf of Alaska.  This system is tapping into an airstream rich in moisture that augurs for a wet period along the Pacific Northwest coast.  Flood watches and have been issued from western Washington and Oregon.  MIMIC Total Precipitable Water fields in December ending at 1500 UTC on 4 December, below, show that some of the moisture in the North Pacific may have been part of the <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/55726\">Kona Low that drenched Hawai&#8217;i last week<\/a>. <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/comp20231201.0000_to_1204.1500anim.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"470\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/comp20231201.0000_to_1204.1500anim.gif\" alt=\"\" class=\"wp-image-55822\"\/><\/a><figcaption class=\"wp-element-caption\">MIMIC Total Precipitable Water, 0000 UTC 1 December &#8211; 1500 UTC 4 December 2023 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>Airmass RGB imagery from GOES-18, below (<a href=\"https:\/\/www.star.nesdis.noaa.gov\/GOES\/sector_band.php?sat=G18&amp;sector=np&amp;band=AirMass&amp;length=48&amp;dim=1\">from this OSPO site<\/a>), shows the well-developed cyclone with the characteristic orange signal in the airmass RGB denoting air with a large Potential Vorticity signal (as confirmed <a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/gfs_2023120418_fh0_xsection_62.24N157.63W_40.74N131.65W_Potential-Vorticity.png\">in this cross-section<\/a> from1800 UTC on 4 December, take from <a href=\"https:\/\/www.tropicaltidbits.com\/analysis\/models\/?model=gfs&amp;region=npac&amp;pkg=pv330K&amp;runtime=2023120418&amp;fh=6\">this site<\/a>).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/G18_sector_np_AirMass_48fr_20231204-1636.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"1800\" height=\"1080\" src=\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2023\/12\/G18_sector_np_AirMass_48fr_20231204-1636.gif\" alt=\"\" class=\"wp-image-55824\"\/><\/a><figcaption class=\"wp-element-caption\">GOES-18 Airmass RGB, 1220 UTC 4 December &#8211; 2110 UTC 4 December 2023 (click to enlarge)<\/figcaption><\/figure>\n\n\n\n<p>For more information on this event, refer to the websites of the National Weather Service Offices in <a href=\"https:\/\/www.weather.gov\/sew\/\">Seattle<\/a>, <a href=\"https:\/\/www.weather.gov\/pqr\/\">Portand<\/a> and <a href=\"https:\/\/www.weather.gov\/mfr\/\">Medford<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hourly GOES-18 Hemispheric views, above, from 2140 UTC on 1 December to 2040 UTC on 4 December, (from the CSPP Geosphere site) show the development of a strong system in the Gulf of Alaska. This system is tapping into an airstream rich in moisture that augurs for a wet period along the Pacific Northwest coast. [&hellip;]<\/p>\n","protected":false},"author":19,"featured_media":55828,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[114,16,79],"tags":[],"class_list":["post-55820","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goes-18","category-heavy-rain-flooding","category-microwave"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/55820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=55820"}],"version-history":[{"count":2,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/55820\/revisions"}],"predecessor-version":[{"id":55829,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/55820\/revisions\/55829"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/55828"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=55820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=55820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=55820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}