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SPC Convective Outlook

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 Forecast Discussion

  
000
ACUS01 KWNS 120537
SWODY1
SPC AC 120536

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1136 PM CST Mon Dec 11 2017

Valid 121200Z - 131200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Thunderstorms are not forecast across the continental U.S. today.

...Southern New England...

A surface low will deepen over New England this morning in response
to forcing for ascent accompanying a vigorous shortwave trough
embedded within an increasingly negative-tilted synoptic trough.
Trailing cold front will continue east and off the Atlantic seaboard
later today. Preceding the front, limited moisture will advect north
along the warm conveyor belt and beneath steepening mid-level lapse
rates, contributing to very weak instability with MLCAPE below 200
J/kg over southern New England. While weak, shallow convection will
likely develop in this regime, especially over southeast MA,
instability and equilibrium temperatures are not expected to become
sufficient to support any thunderstorm activity.  

...Elsewhere...

Offshore flow will maintain stable conditions inland.

..Dial.. 12/12/2017

$$