DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 271946
SWODY1
SPC AC 271943

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0143 PM CST FRI DEC 27 2013

VALID 272000Z - 281200Z

...NO TSTM AREAS FORECAST...

NO CHANGES NEEDED TO THE PREVIOUS OUTLOOK.

..BUNTING.. 12/27/2013

.PREV DISCUSSION... /ISSUED 1024 AM CST FRI DEC 27 2013/

...SYNOPSIS...
AS AN UPPER TROUGH OVER THE NERN QUARTER OF THE U.S. PROGRESSES
TOWARD/OFF THE ATLANTIC COAST...A BRIEF SWITCH TO A MORE ZONAL FLOW
PATTERN WILL OCCUR ACROSS THE NRN TIER OF THE COUNTRY AHEAD OF THE
NEXT TROUGH PROGRESSING INTO THE PAC NW COASTAL AREAS ATTM. WHILE
THIS TROUGH WILL CONTINUE ADVANCING INLAND WITH TIME...A SRN STREAM
TROUGH OVER THE TX/NRN MEXICO AREA WILL REMAIN BASICALLY IN PLACE
THROUGH THE END OF THE PERIOD.

AT THE SURFACE...A COLD FRONT WILL LINGER NEAR THE U.S./CANADIAN
BORDER THROUGH MOST OF THE PERIOD...BEFORE BEGINNING A SWD ADVANCE
LATE. MEANWHILE...A DIFFUSE/REMNANT BAROCLINIC ZONE WILL REMAIN
INVOF CENTRAL/S FL THROUGH THE PERIOD.

THE MAIN CHANGE THIS FORECAST WILL BE TO REMOVE THE THUNDER AREA
OVER S FL. WHILE SHOWERS AND PERHAPS A COUPLE OF LIGHTNING STRIKES
ARE EXPECTED HERE /AND ACROSS CENTRAL AND S TX/...OVERALL LIGHTNING
COVERAGE SHOULD REMAIN BELOW 10% THRESHOLD JUSTIFYING AN AREAL
OUTLOOK.

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