SWODY3
SPC AC 020717
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0117 AM CST FRI JAN 02 2009
VALID 041200Z - 051200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS AND FORECAST...
A DYNAMIC LARGE-SCALE PATTERN WILL EXIST DURING THE DAY THREE PERIOD
AS STRONG...MID/UPPER-LEVEL TROUGH BECOMES NEGATIVELY TILTED OVER
THE GREAT LAKES AND OH VALLEY. ELSEWHERE...A LOW-LATITUDE TROUGH
WILL TRANSLATE SEWD THROUGH THE LOWER CO VALLEY AND BAJA/GULF OF CA
INTO NWRN MEXICO. IN THE LOW LEVELS...PRIMARY SURFACE LOW WILL
DEVELOP NEWD FROM IND/IL INTO ERN ONTARIO/WRN QUEBEC WHILE TRAILING
COLD FRONT SURGES EWD THROUGH THE MS VALLEY TOWARD THE ATLANTIC
COAST. THIS FRONT WILL ALSO PUSH SWD INTO THE GULF OF MEXICO.
CLUSTERS OF TSTMS ARE EXPECTED TO BE ONGOING SUNDAY MORNING OVER
PARTS OF THE CNTRL/ERN GULF COAST. THIS ACTIVITY WILL LIKELY
CONTINUE THROUGH THE DAY AS AIR MASS DESTABILIZES IN ADVANCE OF
SURFACE COLD FRONT. LIMITED INSTABILITY...VERTICAL SHEAR AND
FORCING FOR ASCENT ALL ARE EXPECTED TO PRECLUDE THE DEVELOPMENT OF
ORGANIZED STORMS AND NO SEVERE WEATHER IS FORECAST.
..MEAD.. 01/02/2009
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