SWODY3
SPC AC 150711
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0211 AM CDT FRI MAY 15 2009
VALID 171200Z - 181200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
SUNDAY WILL BE A TRANSITIONAL DAY INTO A MUCH QUIETER PERIOD ACROSS
THE CONUS. A RATHER AMPLIFIED LARGE SCALE REGIME WILL BE PREVALENT
SUNDAY...WITH BROAD UPPER RIDGING ACROSS THE WESTERN TWO-THIRDS OF
THE CONUS IN THE WAKE OF A NORTHEAST STATES/QUEBEC UPPER TROUGH.
ASSOCIATED COLD FRONT SHOULD CLEAR MUCH OF THE EASTERN SEABOARD
EARLY IN THE DAY...EXCEPT FOR THE SLOWER SOUTHEAST-MOVING PORTION OF
THE FRONT ACROSS THE SOUTHEAST STATES/NORTH FL.
...SOUTHEAST STATES/FL...
ON THE SOUTHERN FRINGE OF EAST COAST TROUGH HEIGHT FALLS...AN
ISOLATED SEVERE THREAT MAY EXIST SUNDAY AFTERNOON IN VICINITY OF THE
SOUTHEAST MOVING COLD FRONT AND/OR THE FL/EASTERN GA/PERHAPS SC SEA
BREEZE. WITH A RESIDUAL MOIST/POTENTIALLY MODERATELY UNSTABLE
AIRMASS BENEATH SUFFICIENTLY COOL MID LEVEL TEMPERATURES /AROUND -9C
TO -10C 500 MB/...WEAK WINDS THROUGH THE LOW/MID TROPOSPHERE WOULD
ONLY SUPPORT A LOCALIZED PULSE-TYPE DOWNBURST/MARGINAL HAIL RISK.
ANY SUCH THREAT WOULD END BY EARLY EVENING.
..GUYER.. 05/15/2009
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