Tag: funnel

22 Jan

June 20, 2015 – Southeast Iowa

stratosigma / Blog, Storm Chasing / / Comments

June 20th through the 22nd looked like a decent opportunity for a three day chase. The 20th featured a belt of westerlies across the northern portion of the CONUS while a low with attendant cold front in the Dakotas was progged to drift to the southeast into the midwest. East of the front, the warm sector looked to be characterized by a moderately unstable airmass with MLCAPE approaching the 4,000 J/Kg area as temperatures were expected to be in the low 80s with low 70 dewpoints.
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20 Jan

May 25, 2015 – Central Kansas

stratosigma / Blog, Storm Chasing / / Comments

May 25th was the final day of my three day mini chasecation and I had spent the night in Hays expecting a play in Central Kansas. A negatively tilted mid level trough was expected to rotate out of the foothills and into the Missouri Valley while modest meridonal flow of 80-100kts overspread the target areas. The SPC had outlined two risk areas: A moderate risk of severe weather in Eastern Texas as well as a slight risk from Salina to Des Moines along a frontal zone where higher lapse rates were expected to overspread mid to upper 60s surface dewpoints later in the day.
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06 Jan

May 15, 2015 – Sidney, Nebraska

stratosigma / Blog, Storm Chasing / / Comments

May 15th and 16th presented a couple of elevated days for severe weather. Despite them probably setting up in Western Nebraska and Southwest Oklahoma/Texas Panhandle area, I decided to make the trek out for the two days. A large trough was working its way through the western CONUS while a weak surface low worked its way across the High Plains into Nebraska. This low would bring with it the enhanced risk for severe weather along a warm front extending across Southern Nebraska as well as along a trailing dryline. Backed low level flow near the low would be the target area.
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11 Mar

July 12, 2014 – Eastern Iowa

stratosigma / Blog, Storm Chasing / / Comments

A quasi-stationary boundary draped across the United States from a low in Colorado through Nebraska, Iowa and Minnesota to Lake Superior co-located with mostly 40kt zonal flow in the mid-levels was the focus for storm development as a weak low was expected to drift into western Iowa throughout the day. Target for the day was eastern Iowa around the Iowa City area as upper 60-low 70s dew were pooled south of the boundary across Iowa into Illinois bringing surface based CAPE into the 4,000 J/Kg regime.
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17 May

May 17, 2013 – Winner, South Dakota

stratosigma / Blog, Storm Chasing / / Comments

The 17th was day 1 of a 4 day chase excursion. A broad upper trough was working its way onshore across the western states and this was the first day its influence could be felt in the Plains. I had driven out from Michigan the day before and spent the night in Sioux Falls, SD. The plan was to play south-central South Dakota for the slight opportunity at supercells and maybe a tornado.
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