{"id":57187,"date":"2024-02-14T15:22:00","date_gmt":"2024-02-14T15:22:00","guid":{"rendered":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=57187"},"modified":"2024-02-15T16:37:00","modified_gmt":"2024-02-15T16:37:00","slug":"large-waves-approaching-hawaii","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/57187","title":{"rendered":"Large waves approaching Hawai’i"},"content":{"rendered":"\n
\"\"<\/a>
Significant Wave Heights in 12-h periods from 0000 UTC 11 February through 1200 UTC 14 February 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

Altimetric measurements of the sea surface (from this site<\/a>), above, show a region of very tall waves early on 14 February<\/a>, with Significant Wave Heights exceeding 30 feet. Those waves are also show below in an analysis from OPC<\/a> (link<\/a>); they are southwest of a hurricane-force low (surface analysis<\/a>; here is a toggle<\/a> between the Significant Wave heights and the surface analysis).<\/p>\n\n\n\n

\"\"<\/a>
OPC Sea-State analysis (Significant Wave Height, in meters), 0000 UTC on 14 February 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

Forecast Waves, below, show the long wave period associated with the large waves starting to affect the Hawai’ian Islands by 1200 UTC 15 February. The north-facing shores of the Hawai-ian islands are under a High Surf Warning<\/a>.<\/p>\n\n\n\n

\"\"
Wave Period, forecast for 1200 UTC on 15 February 2024 (Click to enlarge).<\/figcaption><\/figure>\n\n\n\n

What does the satellite imagery show for the storm that supported such strong waves? Airmass RGB imagery from Himawari-9, below, (from 0000 UTC 9 February through 2300 UTC 12 February) show the development of the system and a long fetch of strong winds (by 2300 UTC 12 February<\/a>). The strong storm exits the eastern edge of the domain by the end of the animation<\/p>\n\n\n\n

\"\"
Airmass RGB from Himawari-9, hourly from 0000 UTC 9 February – 1200 UTC 12 February 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

GOES-West imagery (from the CSPP Geosphere site<\/a>), hourly below from 1500 UTC on 12 February through 1900 UTC on 14 February shows the strong storm moving eastward across the Pacific, with strong nortwest winds inferred behind a propagating cold front.<\/p>\n\n\n\n

GOES-West true color (day time) and Night Microphysics (night time) from 1500 UTC 12 February through 1900 UTC 14 February 2024 (Click to enlarge)<\/figcaption><\/figure>\n\n\n\n

For more information on this wave event, refer to the forecast office of the National Weather Service in Honolulu<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Altimetric measurements of the sea surface (from this site), above, show a region of very tall waves early on 14 February, with Significant Wave Heights exceeding 30 feet. Those waves are also show below in an analysis from OPC (link); they are southwest of a hurricane-force low (surface analysis; here is a toggle between the […]<\/p>\n","protected":false},"author":19,"featured_media":57195,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[152,114,73,8,79],"tags":[],"class_list":["post-57187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-altimetry","category-goes-18","category-himawari-9","category-marine-weather","category-microwave"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/57187","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=57187"}],"version-history":[{"count":5,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/57187\/revisions"}],"predecessor-version":[{"id":57211,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/57187\/revisions\/57211"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media\/57195"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=57187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=57187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=57187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}