{"id":10278,"date":"2013-05-20T00:00:27","date_gmt":"2013-05-20T08:00:27","guid":{"rendered":"http:\/\/stormbruiser.com\/chase\/?p=10278"},"modified":"2014-02-21T15:52:43","modified_gmt":"2014-02-21T23:52:43","slug":"may-20-2013-moderate-risk-supercells-in-oktx","status":"publish","type":"post","link":"http:\/\/stormbruiser.com\/chase\/2013\/05\/20\/may-20-2013-moderate-risk-supercells-in-oktx\/","title":{"rendered":"May 20, 2013 Moderate risk supercells in OK\/TX"},"content":{"rendered":"

\"130520_3136_Chickasha_OK\"<\/a><\/p>\n

 <\/p>\n

Following the long chase day in Kansas on the 19th, we awoke in Independence, KS, to a moderate risk with a 10 percent “hatched” tornado risk.\u00a0 SPC’s outlines favored the area from about Ardmore, OK, northeastward to northwestern Arkansas.\u00a0 Oklahoma City was along the northernwestern fringe of the moderate and hatched areas.\u00a0 It was clear that we needed to be in central to south-central OK, so we high-tailed it to OKC.\u00a0 We reached OKC around 1 p.m., with enough time for a fast-food lunch.\u00a0 The skies were mostly clear, it was getting hot and humid, and the wind shear was great.\u00a0 SPC issued a mesoscale discussion early (before 1 p.m.), as convection appeared likely by 21Z.\u00a0 Here is their blurb for south-central OK and vicinity:<\/p>\n

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TO THE S...AN EXTREMELY VOLATILE AIR MASS EXISTS WITH AN INCREASING\r\n   CU FIELD FROM NWRN TX INTO SWRN OK WHERE STRONG HEATING PERSISTS.\r\n   WIND FIELDS ALOFT ARE MORE THAN FAVORABLE FOR SUPERCELLS...WITH VERY\r\n   LARGE HAIL LIKELY. ALTHOUGH SHEAR IN THE LOWEST 1-2 KM IS NOT\r\n   PARTICULARLY STRONG...VERY LARGE VERTICAL ACCELERATIONS...AS WELL AS\r\n   HODOGRAPH AUGMENTATION NEAR THE SFC FRONT WILL AID IN TORNADO\r\n   POTENTIAL. HP SUPERCELLS ARE EXPECTED WITH STRONG MESOCYCLONES AND\r\n   POSSIBLE RAIN-WRAPPED TORNADOES.\r\n\r\n<\/pre>\n
As we wrapped up lunch, we noticed that the cumulus field to our southwest was getting quite perky.\u00a0 My thinking was that we needed to get into position on this development quickly!\u00a0 We headed southwest on I-44 to Chickasha, and a strong updraft was nearby.\u00a0 Another stronger and more impressive updraft was another 20 miles or so to our south.\u00a0 This is when the critical decision of the day was made.\u00a0 The severe-weather parameter indicators on the SPC mesoscale maps seemed to slightly favor the area to the south versus the area from Chickasha to the OKC metro area.\u00a0 The SPC risk outlines also supported this thinking.\u00a0 I, and most chasers, elected to focus on the slightly older and more robust southern updraft in Grady County.\u00a0 Even if severe parameters had shown little difference between the two, I probably would have chosen the southern storm, simply because it would not be moving into a densely populated metro area.<\/p>\n
Well, as it turns out, we wound up watching a highly electrified but HP-ish mess of a supercell, in the Lindsay area, while that northern cell which we passed by near Chickasha went on to produce a long-track, highly visible and violent tornado which ravaged Moore, OK.\u00a0 Here are some views of the southern cell, which reportedly produced a brief tornado which we could not see.<\/p>\n
 <\/p>\n
\"130520_3136_Chickasha_OK\"<\/a> \"130520_3141_Lindsay_OK\"<\/a> \"130520_3143_Lindsay_OK\"<\/a> \"130520_3144_Lindsay_OK\"<\/a> \"130520_3148_Lindsay_OK\"<\/a><\/p>\n
 <\/p>\n
We were east of this updraft area for quite a while, and the CG lightning was so frequent in our area that we had to remain in the vehicles.\u00a0 Eventually our supercell was so messy and rain-filled that it was time to find something new.\u00a0 We blasted south to the Red River and Saint Jo, TX, and got in front of another rather wet and messy storm.\u00a0 It provided some interesting lowerings and fast cloud motions along U.S. 287, but it was a bit outflow dominant and did not produce.\u00a0 There was, however, some damage due to wind at Nocona.\u00a0 We gave up before reaching I-35, and headed back west to Wichita Falls for the night.<\/p>\n
 <\/p>\n
\"130520_3151_Saint-Jo-TX\"<\/a> \"130520_3162_Saint-Jo-TX\"<\/a> \"130520_3165_Saint-Jo-TX\"<\/a> \"130520_3168_Saint-Jo-TX\"<\/a><\/p>\n
<\/pre>\n","protected":false},"excerpt":{"rendered":"
  Following the long chase day in Kansas on the 19th, we awoke in Independence, KS, to a moderate risk with a 10 percent “hatched”… [Read More]<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[54,22,11],"tags":[],"class_list":{"0":"post-10278","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-54","7":"category-cumulonimbus","8":"category-supercells","9":"entry","10":"has-post-thumbnail"},"_links":{"self":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/10278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/comments?post=10278"}],"version-history":[{"count":3,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/10278\/revisions"}],"predecessor-version":[{"id":10290,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/posts\/10278\/revisions\/10290"}],"wp:attachment":[{"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/media?parent=10278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/categories?post=10278"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/stormbruiser.com\/chase\/wp-json\/wp\/v2\/tags?post=10278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}