{"id":633,"date":"2008-04-04T16:09:33","date_gmt":"2008-04-04T16:09:33","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/633"},"modified":"2008-04-07T16:59:26","modified_gmt":"2008-04-07T16:59:26","slug":"severe-weather-in-arkansas","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/633","title":{"rendered":"Severe weather in Arkansas"},"content":{"rendered":"

\"MODIS<\/a><\/p>\n

Severe convection developed in the warm sector of a cyclone that was moving through the mid-Mississippi River Valley region, producing widespread reports of heavy rain, damaging winds, hail, and tornadoes on the evening of 03 April 2008<\/strong><\/a> (SPC storm reports<\/strong><\/a> | NWS Little Rock AR report<\/strong><\/a>). An AWIPS image of the MODIS 11.0\u00c2\u00b5m IR channel (above)<\/strong><\/em> shows the surface frontal positions and mean sea level pressure analysis at 03 UTC (10 PM local time)<\/em>.<\/p>\n

\"GOES-12<\/a><\/p>\n

AWIPS images of the GOES-12 10.7\u00c2\u00b5m “IR window” channel (above)<\/strong><\/em> shows that a well-defined “enhanced-V signature” developed in the vicinity of Hot Springs, Arkansas (station identifier KHOT)<\/em> after 01:15 UTC (8:15 PM local time)<\/em> — hail of 1.75 inches<\/strong> in diameter was reported at Bonnerville (located just southwest of Hot Springs) around 01:10 UTC (8:10 PM local time)<\/em>. Heavy rain (6.44 inches)<\/strong> fell at Glenwood (also located southwest of Hot Springs). This enhanced-v storm then continued to move northeastward toward the Little Rock area (station identifier KLIT),<\/em> where it produced tornadoes that damaged parts of Little Rock during the 02:50-03:10 UTC (9:50-10:10 PM local time)<\/em> period — one tornado actually forced the staff of the National Weather Service Forecast Office at North Little Rock Airport to take cover for a short time while the storm moved close to the facility. The second-highest wind gust on record (64 mph)<\/em><\/strong> was also recorded at North Little Rock Airport during this event.<\/p>\n

\"GOES-12<\/a><\/p>\n

Cloud to ground (CG) lightning strikes plotted on the GOES-12 IR imagery (above)<\/strong><\/em> revealed that a cluster of CG strikes was associated with the vertex of the enhanced-v signature on satellite imagery. As is typically the case, this storm was negative strike dominant<\/strong><\/a>, with positive strikes making up less than 10% of the total cloud to ground lightning strikes.<\/p>\n

\"GOES-12<\/a><\/p>\n

A comparison of 4-km resolution GOES-12 IR imagery with 1-km resolution NOAA-17 AVHRR IR imagery (above)<\/strong><\/em> demonstrates the improved storm top temperature detection capability of the polar-orbiting AVHRR instrument. In particular, a closer view of the developing enhanced-v signature near the Arkansas\/Missouri border region (below)<\/strong><\/em> shows finer detail in the temperature fields and the magnitude of the enhanced-v cold\/warm cloud top temperature couplet (-81\u00c2\u00baC\/-61\u00c2\u00baC on the AVHRR image, versus -75\u00c2\u00baC\/-64\u00c2\u00baC on the GOES-12 image)<\/em>.<\/p>\n

\"GOES-12<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Severe convection developed in the warm sector of a cyclone that was moving through the mid-Mississippi River Valley region, producing widespread reports of heavy rain, damaging winds, hail, and tornadoes on the evening of 03 April 2008 (SPC storm reports | NWS Little Rock AR report). An AWIPS image of the MODIS 11.0\u00c2\u00b5m IR channel […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22,19,30,12,3],"tags":[],"class_list":["post-633","post","type-post","status-publish","format-standard","hentry","category-avhrr","category-goes-12","category-lightning","category-modis","category-severe-convection"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/633","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=633"}],"version-history":[{"count":0,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/633\/revisions"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}