DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 010456
SWODY1
SPC AC 010454

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1154 PM CDT MON SEP 30 2013

VALID 011200Z - 021200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS/FORECAST...
WHILE TSTMS WILL BE POSSIBLE...VIRTUALLY NIL SEVERE TSTM POTENTIAL
WILL EXIST CONUS-WIDE THROUGH TONIGHT. A PROGRESSIVE BELT OF
WESTERLIES WILL REMAIN OVER THE NORTHERN TIER OF THE
CONUS...HIGHLIGHTED BY THE EASTWARD ADVANCEMENT OF A SHORTWAVE
TROUGH/SPEED MAX CURRENTLY NEARING THE PACIFIC NORTHWEST...WHICH IS
EXPECTED TO REACH THE NORTHERN GREAT DIVIDE BY EARLY WEDNESDAY.
ISOLATED TSTMS WILL REMAIN POSSIBLE ACROSS PORTIONS OF THE PACIFIC
NORTHWEST...WITH SPARSE MOISTURE/RELATIVELY STABLE CONDITIONS
OTHERWISE LIMITING TSTM POTENTIAL ACROSS THE NORTHERN
ROCKIES/NORTHERN HIGH PLAINS.

ELSEWHERE...SHOWERS AND SOME TSTMS WILL BE POSSIBLE ESPECIALLY
DURING THE AFTERNOON/EARLY EVENING HOURS ACROSS THE LOWER MS RIVER
VALLEY AND OTHER PARTS OF THE GULF COAST REGION/SOUTH FL. WEAK
VERTICAL SHEAR AND MEAGER MID-LEVEL LAPSE RATES ARE EXPECTED TO
LIMIT UPDRAFT INTENSITY/SUSTAINABILITY IN THESE AREAS...WITH SEVERE
TSTMS NOT EXPECTED.

..GUYER/LEITMAN.. 10/01/2013

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