SPC AC 180439
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1139 PM CDT Tue Apr 17 2018
Valid 181200Z - 191200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are unlikely across the continental U.S. on Wednesday.
...Synopsis and Discussion...
A potent shortwave trough will move quickly from the Midwest toward
the Mid Atlantic by Thursday morning, with a cold front bringing
cool, dry air across much of the South and East. While lift will
exist with this shortwave trough, moisture and instability will be
quite limited, with only sporadic, weak elevated convection possible
across the Midwest/OH Valley with little or no lightning.
To the west, an upper trough will drop south across CA and the Great
Basin, providing cold temperatures aloft with a few convective
showers possible over northern CA, OR, and western NV.
..Jewell/Cook.. 04/18/2018
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