Tag: shelf cloud

13 Dec

August 12, 2017 – Nebraska Panhandle

stratosigma / Blog, Storm Chasing / / Comments

August 12th featured a shortwave trough moving across the Northern Plains into the Upper Great Lakes while a lee trough was forecast to develop across western Nebraska and eastern Colorado. With surface dewpoints into the low 60s and modest backing low level wind fields into the Nebraska Panhandle it seemed like there was a good opportunity for organized severe weather.
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14 May

April 14, 2017 – Central Nebraska

stratosigma / Blog, Storm Chasing / / Comments

Generally westerly flow aloft as a trough edged in from the Pacific Northwest while at the surface a surface low was progged to develop in NE Colorado and drift eastward while a dryline extended south through Western Kansas into New Mexico. SPC had outlined a slight risk along the dryline from Kansas south along the Texas/New Mexico border. Marginal tornado probabilities extended along the same region as well as a bit into Nebraska closer to the low.
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14 Dec

June 25, 2016 – Mille Lacs Lake Shelf

stratosigma / Blog, Storm Chasing / / Comments

June 25th was the final day in a four day stretch of roaming the Upper Midwest and Northern Plains. My goal was to hopefully find a decent storm north of the Minneapolis metro area after the previous two days in the Dakotas were complete busts (although I did get some sweet landscape art).
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27 Sep

June 15, 2016 – Tracking a supercell across Wisconsin

stratosigma / Blog, Storm Chasing / / Comments

June 15, 2016 featured a shortwave trough forecast to move across the Minnesota Arrowhead into Wisconsin along with a surface low and attendant warm front draped across the I-90 corridor. With surface temperatures in the low 80s and dewpoints in the upper 60s, convergence along the front and ahead of the low seemed like a decent target for severe weather.
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08 Jun

April 29, 2016 – Southwest Oklahoma

stratosigma / Blog, Storm Chasing / / Comments

Day 6 of a week long chase vacation featured an enhanced risk of severe weather along the Red River. A negatively tilted mid-level trough was ejecting into The Plains while at the surface, a low in the southern Texas Panhandle was forecast to migrate east along the Red River bringing upper 60s dewpoints into Southern Oklahoma.
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