SPC AC 120624
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1224 AM CST Sun Mar 12 2017
Valid 141200Z - 151200Z
...NO THUNDERSTORM AREAS FORECAST...
Thunderstorms are unlikely across the lower 48 on Tuesday.
A large and deepening upper low will develop across the Great Lakes
and into the Northeast with surface low developing northward across
parts of New England. This will drive a cold front across the Gulf
of Mexico and across the western Atlantic, shunting low-level
moisture and instability well offshore. Strong lift with the
northeastern system could possibly result in a rogue lightning
strike or two with little instability, but coverage does not warrant
a 10% thunder line at this time.
Elsewhere, an upper ridge will exist across much of the West, with
an upper trough gradually approaching the WA/OR coasts. With the
main low well offshore, instability is not expected to support any
NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z