SWODY3
SPC AC 130724
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0124 AM CST SUN JAN 13 2008
VALID 151200Z - 161200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
ACTIVE TRAIN OF STRONG SHORTWAVE TROUGHS WILL CONTINUE TO MIGRATE
E/SEWD ACROSS THE COUNTRY THIS FORECAST PERIOD. ONE OF THESE TROUGHS
WILL BE EJECTED FROM THE OHIO/MS VALLEYS EWD TO THE ERN
SEABOARD...IN RESPONSE TO A STRONGER SYSTEM DIGGING SEWD FROM THE
PACIFIC NW/NRN ROCKIES INTO THE NRN PLAINS/CENTRAL ROCKIES. THIS
SECOND SYSTEM IS EXPECTED TO EVOLVE INTO A HIGHLY AMPLIFIED LONGWAVE
TROUGH OVER THE CENTRAL U.S. WED/THU.
ALTHOUGH A COLD FRONT WILL ACCOMPANY THE NRN PLAINS/ROCKIES TROUGH
..EXITING ERN U.S. TROUGH SHOULD MAINTAIN SURFACE HIGH PRESSURE
ACROSS THE GULF COASTAL STATES AND MOST OF THE GULF OF MEXICO. GIVEN
THAT COOL...STABLE AND DRY CONDITIONS WILL PERSIST ACROSS THE CONUS
ON TUESDAY...AND MOISTURE RETURN WILL BE NIL...NO THUNDERSTORMS ARE
EXPECTED.
.IMY.. 01/13/2008
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