{"id":11602,"date":"2012-10-18T23:59:08","date_gmt":"2012-10-18T23:59:08","guid":{"rendered":"http:\/\/cimss.ssec.wisc.edu\/satellite-blog\/?p=11602"},"modified":"2012-10-20T17:27:17","modified_gmt":"2012-10-20T17:27:17","slug":"strong-winds-and-blowing-dust-across-nebraska-kansas-and-oklahoma","status":"publish","type":"post","link":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/archives\/11602","title":{"rendered":"Strong winds and blowing dust across Nebraska, Kansas, and Oklahoma"},"content":{"rendered":"
\"Suomi<\/a>

Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel images<\/p><\/div>\n

AWIPS images of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel data (above)<\/em><\/strong> showed the hazy signature of a dense plume of blowing dust along the southwestern periphery of a large mid-latitude cyclone that was centered over Minnesota and Wisconsin on 18 October 2012<\/strong><\/a>. Surface winds gusted as high as 73 mph in Nebraska and 56 mph in Kansas, reducing visibility to near zero in areas of dense blowing dust.<\/p>\n

An animation of AWIPS 4-panel images of GOES-13 0.63 \u00c2\u00b5m visible channel, 6.5 \u00c2\u00b5m water vapor channel, 10.7 \u00c2\u00b5m IR channel, and 3.9 \u00c2\u00b5m shortwave IR data (below; click image to play animation)<\/em><\/strong> showed (1) the evolution of the dense plume of blowing dust on visible imagery as it developed and moved southeastward across Nebraska, Kansas, and Oklahoma; (2) a well-defined dry region (yellow color enhancement)<\/em> on water vapor imagery that highlighted strong middle-tropospheric subsidence that initiated the downward transfer of momentum leading to the subsequent strong winds at the surface; and (3) the appearance of wildfire “hot spots” (black to yellow to red color enhancement)<\/em> on the shortwave IR imagery in northeastern Colorado and southwestern Nebraska.<\/p>\n

\"GOES-13<\/a>

GOES-13 0.63 \u00c2\u00b5m visible, 6.5 \u00c2\u00b5m water vapor, 10.7 \u00c2\u00b5m IR, and 3.9 \u00c2\u00b5m shortwave IR images (click image to play animation)<\/p><\/div>\n

An Aqua MODIS true-color Red\/Green\/Blue (RGB) image from the SSEC MODIS Today<\/a><\/strong> site (below)<\/em><\/strong> showed the tan\/light brown signature of the most dense portion of the blowing dust plume. The blowing dust reduced surface visibility to near zero in a number of areas, forcing road closures across parts of Nebraska and Kansas — including a multiple-vehicle accident that closed Interstate 35 near Blackwell, Oklahoma.<\/p>\n

\"MODIS<\/a>

MODIS true color image (displayed using Google Earth)<\/p><\/div>\n

 <\/p>\n

\"MODIS<\/a>

MODIS 0.64 \u00c2\u00b5m visible channel and 11-12 \u00c2\u00b5m IR brightness temperature difference (BTD) product<\/p><\/div>\n

A comparison of the MODIS 0.64 \u00c2\u00b5m visible channel data with the corresponding 11-12 \u00c2\u00b5m IR brightness temperature difference (BTD) product (above)<\/em><\/strong> demonstrated that the BTD product did a better job at depicting the broad areal extent of the airborne dust (lighter blue to cyan color enhancement)<\/em> at 20:13 UTC (3:13 PM local time)<\/em>. There was one pilot report of moderate to severe turbulence<\/strong><\/a> over northeastern Oklahoma near the leading edge of the dust plume.<\/p>\n

===== 19 October Update =====<\/strong><\/p>\n

The MODIS BTD product was then able to follow the movement of the dust plume during the subsequent overnight hours, when visible channel imagery was no longer available — the plume became more narrow and less dense as it continued to move southeastward across Arkansas and then over northern Mississippi and Alabama<\/strong><\/a> by 08:10 UTC (4:10 AM local time)<\/em> on 19 October (below)<\/em><\/strong>.<\/p>\n

\"MODIS<\/a>

MODIS 11-12 \u00c2\u00b5m IR brightness temperature difference (BTD) product<\/p><\/div>\n

After sunrise on the morning of 19 October, the hazy signature of the airborne dust could be seen on GOES-14 0.63 \u00c2\u00b5m visible channel images over the southeastern US (below)<\/strong><\/em>. There were pilot reports of flight visibility being restricted to 2 miles at an altitude of 1000 feet over southeastern Tennessee (GOES-13 visible image<\/a><\/strong> | MODIS BTD image<\/a><\/strong>), and 3 miles at an altitude of 3500 feet over northern Alabama (GOES-13 visible image<\/a><\/strong> | MODIS BTD image<\/a><\/strong>).<\/p>\n

\"GOES-14<\/a>

GOES-14 0.63 \u00c2\u00b5m visible channel images<\/p><\/div>\n

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

AWIPS images of Suomi NPP VIIRS 0.64 \u00c2\u00b5m visible channel data (above) showed the hazy signature of a dense plume of blowing dust along the southwestern periphery of a large mid-latitude cyclone that was centered over Minnesota and Wisconsin on 18 October 2012. Surface winds gusted as high as 73 mph in Nebraska and 56 […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,6,11,32,12,45,49,48],"tags":[],"class_list":["post-11602","post","type-post","status-publish","format-standard","hentry","category-air-quality","category-fire-detection","category-goes-13","category-google-earth","category-modis","category-redgreenblue-rgb-images","category-suomi_npp","category-viirs"],"acf":[],"_links":{"self":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/11602","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=11602"}],"version-history":[{"count":25,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/11602\/revisions"}],"predecessor-version":[{"id":11627,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/posts\/11602\/revisions\/11627"}],"wp:attachment":[{"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/media?parent=11602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/categories?post=11602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-json\/wp\/v2\/tags?post=11602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}