SWODY3
SPC AC 140727
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0127 AM CST WED NOV 14 2007
VALID 161200Z - 171200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS/FORECAST...
NEGATIVE-TILT MID/UPR-LVL TROUGH OVER NEW ENGLAND EARLY IN THE
PERIOD WILL CLOSE OFF INTO A LOW OVER SERN CANADA BY FRI AFTN.
ADDITIONAL SHORTWAVE TROUGHS WILL DIG SWD INTO THE GRTLKS/OH VLY
REGIONS MAINTAINING THE BROAD ERN STATES LONGWAVE TROUGH INTO THE
WEEKEND. MEANWHILE...ANOTHER STRONG WAVE WILL ARRIVE ONSHORE PAC NW
AND ACT TO FINALLY KICK OUT THE MEXICAN UPR WAVE INTO TX BY LATE ON
FRI.
BUILDING SFC PRESSURES IN WAKE OF THE E COAST SYSTEM WILL FORCE A CP
AIR MASS DEEP INTO THE GULF OF MEXICO BASIN. AS A RESULT...
PROSPECTS FOR TSTMS APPEARS NIL/MINIMAL OVER THE ERN TWO-THIRDS OF
THE COUNTRY.
OTHERWISE...MID/UPR-LVL DEFORMATION ZONE ASSOCD WITH THE MEXICAN
IMPULSE WILL SHIFT NEWD FROM NRN MEXICO INTO PARTS OF SERN AZ/SRN NM
DURING THE AFTN. WEAK BUOYANCY/STEEP LAPSE RATES IN THE
MID-TROPOSPHERE MAY BE SUFFICIENT FOR ISOLD LIGHTNING STRIKES OVER
THESE AREAS FRIDAY AFTN INTO THE NIGHT. PRIMARY TSTM PROBABILITIES
SHOULD REMAIN OVER NRN SONORA/CHIHUAHUA.
.RACY.. 11/14/2007
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