SPC AC 060517
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1117 PM CST MON MAR 05 2007
VALID 061200Z - 071200Z
...NO TSTM AREAS FORECAST...
...SYNOPSIS AND FORECAST...
AMPLIFIED LONG WAVE PATTERN WILL PERSIST THROUGH THE DAY ONE
PERIOD...CHARACTERIZED BY INTENSE LOW OVER THE GULF OF AK...RIDGING
OVER CNTRL CANADA...AND DEEP TROUGH FROM HUDSON BAY TO CANADIAN
MARITIMES. A LOWER LATITUDE IMPULSE WILL TRANSLATE EWD FROM THE
GREAT BASIN INTO CNTRL HIGH PLAINS...EMBEDDED WITHIN A SRN BRANCH OF
WESTERLIES ACROSS THE SRN STATES.
IN THE LOW-LEVELS...WEAK SURFACE LOW INITIALLY OVER THE CNTRL HIGH
PLAINS WILL DEVELOP NEWD ALONG BAROCLINIC ZONE INTO THE OH VALLEY BY
WEDNESDAY MORNING. WHILE SOME INCREASE IN BOUNDARY LAYER MOISTURE
WILL OCCUR WITHIN PRE-FRONTAL AIR MASS OVER S TX...ENVIRONMENT WILL
REMAIN STABLE OWING TO POOR MID LEVEL LAPSE RATES. ELSEWHERE...SOME
STEEPENING OF LAPSE RATES WILL OCCUR AHEAD OF SHORT WAVE TROUGH
MOVING THROUGH THE GREAT BASIN. AN ISOLATED LIGHTNING STRIKE IS
POSSIBLE...HOWEVER AIR MASS IS EXPECTED TO REMAIN TOO DRY TO SUPPORT
AN ORGANIZED THUNDER THREAT.
..MEAD.. 03/06/2007
CLICK TO GET WUUS01 PTSDY1 PRODUCT
NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z
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