Overview
A complex of thunderstorms moved southeast from western Nebraska and northwest Kansas to eastern Oklahoma. This complex evolved into a squall line producing severe winds and resulting in tree and power line damage. Wind gusts near 70 mph were reported.Wind:
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Damage to an outbuilding 3 E of Strong City Courtesy of Chase County Emergency Management |
Damage to an outbuilding 3 E of Strong City Courtesy of Chase County Emergency Management |
Roof damage to manufactured home 2 ENE of Strong City Courtesy of Chase County Emergency Management |
Tree damage 2 ENE Strong City Courtesy of Chase County Emergency Management |
Other images
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Radar
Environment
Thunderstorms developed near and north of a cold front (that was stretched west to east across northern Kansas). Those thunderstorms then plunged southeast (as a Mesoscale Convective System or MCS) into a very unstable and modestly sheared environment across central and eastern Kansas.
10PM surface analysis showing a cold front draped west to east across northern Kansas. This front helped provide a focus for the line of thunderstorms that raced southeast across the state. | A very unstable atmosphere was in place across central and eastern Kansas prior to the thunderstorms arrival. | Not only was the atmosphere very unstable, it was also very moist. This map shows Precipitable Water (a measure of the water content in the air). Values of 1.50" or greater this time of year can signal a threat of very heavy rain and flooding. Notice the higher values across the eastern half of the state. |
Additional environmental data
Shear (something we use to determine how organized thunderstorms can get) was modest, but more than sufficient for severe weather in this case. | The MCS parameter looks at the environment as a whole to help determine if it is favorable for MCS maintenance (in other words, if a complex of storms forms, will it survive?). Based on this, the environment very much supported the maintenance of an MCS across the state. | Another consideration for thunderstorm complexes is whether or not there will be a continued supply of moisture. This map shows that there was a decent transport of moisture into the area, feeding the thunderstorm complex, if you will. |
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