{"id":62877,"date":"2025-01-30T23:59:00","date_gmt":"2025-01-30T23:59:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=62877"},"modified":"2025-01-31T21:24:02","modified_gmt":"2025-01-31T21:24:02","slug":"severe-thunderstorms-across-hawaii","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/62877","title":{"rendered":"Severe thunderstorms across Hawai\u2019i"},"content":{"rendered":"

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GOES-18 Clean Window Infrared (10.3 \u00b5m) image at 1528 UTC, with a cursor sample of the Severe Thunderstorm Watch [click to enlarge]<\/p><\/div>With the increasing threat for strong to severe convection across the western portion of Hawai\u2019i, a Severe Thunderstorm Watch was issued for an area centered on the island of Kauai at 1522 UTC on 30th January 2025 (above)<\/strong><\/em>.<\/p>\n

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5-minute GOES-18 Clean Infrared Window (10.3 \u00b5m) images, from 1106 UTC on 30th January to 0901 UTC on 31st January [click to play MP4 animation]<\/p><\/div>5-minute CONUS Sector GOES-18 Clean Infrared Window (10.3 \u00b5m) images (above)<\/strong><\/em> showed elongated clusters of convection moving eastward and northeastward across Kauai and Oahu — with embedded thunderstorms that produced heavy rain and strong winds on those two islands (Local Storm Reports<\/strong><\/a>).<\/p>\n

A corresponding animation of GOES-18 Infrared images with an overlay of GLM Flash Extent Density (below)<\/em><\/strong> displayed the abundant lightning activity associated with these thunderstorms.<\/p>\n

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5-minute GOES-18 Clean Infrared Window (10.3 \u00b5m) images with an overlay of GLM Flash Extent Density, from 1106 UTC on 30th January to 0901 UTC on 31st January [click to play MP4 animation]<\/p><\/div>This convection was occurring within the warm sector of a deepening Gale Force to Storm Force low pressure system (bottom left on these surface analyses<\/strong><\/a>) that was located NW of the island chain — and the strong SW flow in advance of this storm system (and its cold front) interacting with island terrain produced wind gusts as high as 120 mph<\/strong><\/a> on Maui at 0850 UTC.<\/p>\n

The air mass within the warm sector was also unusually moist — in fact, a new daily record rainfall of 3.57 inches<\/strong><\/a> occurred at Honolulu. The Total Precipitable Water (PW) value of 1.98″ derived from Lihue, Kauai rawinsonde data at 1200 UTC on 30th January was a record high value for that date\/time, according to the SPC Sounding Climatology site (below)<\/em><\/strong>.<\/p>\n

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Plot of Lihue rawinsonde data at 1200 UTC on 30th January [click to enlarge]<\/p><\/div>
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Climatology of Total Precipitable Water for Lihue at 1200 UTC on 30th January [click to enlarge]<\/p><\/div>The PW value derived from Lihue rawinsonde data at 1800 UTC on 30th January (about 2.5 hours after the Severe Thunderstorm Watch was issued) was even higher, at 2.06″ (below)<\/strong><\/em>.<\/p>\n

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Plot of Lihue rawinsonde data at 1800 UTC on 30th January [click to enlarge]<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

With the increasing threat for strong to severe convection across the western portion of Hawai\u2019i, a Severe Thunderstorm Watch was issued for an area centered on the island of Kauai at 1522 UTC on 30th January 2025 (above). 5-minute CONUS Sector GOES-18 Clean Infrared Window (10.3 \u00b5m) images (above) showed elongated clusters of convection moving […]<\/p>\n","protected":false},"author":18,"featured_media":62887,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[76,114,16,30,3],"tags":[],"class_list":["post-62877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glm","category-goes-18","category-heavy-rain-flooding","category-lightning","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62877","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/comments?post=62877"}],"version-history":[{"count":22,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62877\/revisions"}],"predecessor-version":[{"id":62961,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/62877\/revisions\/62961"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/62887"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=62877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=62877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=62877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}