SPC Jul 27, 2020 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0728 PM CDT Sun Jul 26 2020

Valid 270100Z - 271200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM THE UPPER
GREAT LAKES TO THE CENTRAL PLAINS...AND OVER DEEP SOUTH TEXAS...

...SUMMARY...
An isolated/brief tornado remains possible this evening across parts
of south Texas, in conjunction with T.D. Hanna.  Isolated severe
thunderstorms also remain possible this evening from the central
High Plains to parts of Michigan.

...Central Plains to the Upper Great Lakes...
Thunderstorms are ongoing/widespread from the Upper Great Lakes
southwestward to Kansas/southeast Nebraska/eastern Colorado, near a
slowly advancing cold front.  However, deep-layer shear remains weak
atop the warm sector.  As such, expect storms to remain largely
sub-severe this evening, with only an isolated risk for damaging
wind gusts expected before storms gradually weaken in most areas
overnight.

...Deep South Texas...
As Hanna continues moving slowly southwestward into central Mexico
while gradually weakening, convection northeast of the center,
across Deep South Texas, persists.  With the evening BRO RAOB, and
area VWPs still showing 30 to 35 kt winds veering with height in the
lowest few km, a rotating storm or two remain possible.  As such,
will maintain 2% probability for a brief tornado across this area.

..Goss.. 07/27/2020

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from SPC Forecast Products http://www.spc.noaa.gov/products/outlook/day1otlk_0100.html