SWOD48
SPC AC 150835
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0335 AM CDT SUN APR 15 2007
VALID 181200Z - 231200Z
..DISCUSSION...
LARGE RIDGE IS FORECAST TO PREVAIL ACROSS THE CENTRAL CONUS THIS
PERIOD...IN THE WAKE OF AN UPPER TROUGH WHICH SHOULD MOVE SLOWLY
EWD/OFF THE ATLANTIC COAST THROUGH THE FIRST HALF OF THE PERIOD.
HOWEVER...MODELS HAVE BEEN CONSISTENT FOR THE PAST COUPLE OF DAYS IN
HINTING THAT A FAIRLY POTENT UPPER TROUGH SHOULD CROSS THE ROCKIES
AND AFFECT THE PLAINS ON DAY 7 /SAT. APR. 21/. BOTH FORECAST THAT
AMPLE MOISTURE SHOULD RETURN NWWD ACROSS THE CENTRAL/S CENTRAL CONUS
AHEAD OF A DEVELOPING SURFACE LOW IN THE CENTRAL HIGH PLAINS --
POSSIBLY SETTING THE STAGE FOR A RELATIVELY WIDESPREAD SEVERE
WEATHER EVENT.
THOUGH THE UPPER SYSTEM AND ASSOCIATED SURFACE LOW ARE FORECAST TO
LIFT NEWD TOWARD THE UPPER GREAT LAKES FOR DAY 8...AMOUNT OF
LOW-LEVEL MOISTURE -- AND THUS POTENTIAL FOR AMPLE DESTABILIZATION
-- REMAIN A QUESTION ATTM -- THEREFORE...WILL NOT OUTLOOK AN AREA
FOR DAY 8 ATTM.
.GOSS.. 04/15/2007
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