Monday, November 11, 2013

DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 110600
SWODY2
SPC AC 110600

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1200 AM CST MON NOV 11 2013

VALID 121200Z - 131200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
MID-LEVEL FLOW ACROSS MUCH OF WESTERN NORTH AMERICA WILL TREND MORE
ZONAL...AT LEAST FOR THIS FORECAST PERIOD...AS THE REMNANTS OF A
SIGNIFICANT CLOSED LOW PROGRESS INLAND ACROSS THE BRITISH
COLUMBIA/PACIFIC NORTHWEST COAST...AND EAST OF THE CANADIAN ROCKIES.
THIS WILL FLATTEN UPPER RIDGING STILL TO BUILD TODAY ACROSS MUCH OF
THE INTERMOUNTAIN WEST AND INTERIOR WESTERN CANADA...WHILE UPPER
TROUGHING CONTINUES TO AMPLIFY DOWNSTREAM...ACROSS THE EASTERN
U.S...COINCIDENT WITH THE SOUTHEASTWARD PROGRESSION OF A SIGNIFICANT
LOW-LEVEL COLD INTRUSION TO THE LEE OF THE ROCKIES. BY 12Z
WEDNESDAY...THE LEADING EDGE OF THIS AIR MASS IS EXPECTED TO ADVANCE
THROUGH MUCH OF THE WESTERN/NORTHERN GULF OF MEXICO AND THE FLORIDA
PENINSULA...AND WELL EAST OF THE REMAINDER OF THE ATLANTIC SEABOARD.
THESE DEVELOPMENTS WILL CONTRIBUTE TO THE REINFORCEMENT OF GENERALLY
STABLE CONDITIONS ACROSS MUCH OF THE U.S...WITH MINIMAL CONVECTIVE
POTENTIAL TUESDAY AND TUESDAY NIGHT.

...FLORIDA PENINSULA...
PRIOR TO THE FRONTAL PASSAGE...THE RISK FOR THUNDERSTORM ACTIVITY
MAY NOT BE COMPLETELY NEGLIGIBLE TUESDAY. LOW-LEVEL MOISTURE AND
SURFACE HEATING ARE EXPECTED TO BE SUFFICIENT TO SUPPORT THE
DEVELOPMENT OF WEAK BOUNDARY LAYER CAPE. AND LOCALLY ENHANCED
LOW-LEVEL CONVERGENCE...MAINLY NEAR SOUTHERN COASTAL AREAS...MAY
CONTRIBUTE TO THE INITIATION OF ISOLATED TO WIDELY SCATTERED
THUNDERSTORMS...PERHAPS AIDED BY LARGE-SCALE FORCING FOR UPWARD
VERTICAL MOTION AHEAD OF THE DIGGING SOUTHERN PORTION OF THE
APPROACHING UPPER TROUGH.

..KERR.. 11/11/2013

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