SPC AC 190506
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1206 AM CDT Fri Oct 19 2018
Valid 211200Z - 221200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
Isolated thunderstorms are possible across parts of the Great Basin
into Arizona on Sunday, and across parts of western and central
Texas Sunday night.
A weak upper low will drift east across the Great Basin with a 30-40
kt midlevel speed max nosing into southern AZ. Cool temperatures
aloft combined with midlevel moisture will favor scattered
thunderstorms across the region, with little threat of severe
weather. To the east, high pressure will extend from TX to the Mid
Atlantic coast as an amplified upper trough ejects out of New
England. Ahead of the southwestern upper trough, minor disturbances
embedded in the southwesterlies over TX may support a few elevated
thunderstorms mainly Sunday night toward the middle Rio Grande
Valley. Instability will remain quite weak, with a cool boundary
layer in place.
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NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z