Severe Storm Outlook Narrative (AC)
Issued by NWS

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ACUS02 KWNS 190653
SWODY2
SPC AC 190652

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1252 AM CST FRI DEC 19 2014

VALID 201200Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

...SUMMARY...
SHOWERS AND A THUNDERSTORM OR TWO WILL BE POSSIBLE LATE SATURDAY
NIGHT OVER DEEP SOUTH TEXAS.

...SYNOPSIS...

PROGRESSIVE UPPER PATTERN WILL UNDERGO GRADUAL AMPLIFICATION ON
SATURDAY WITH A FULL-LATITUDE TROUGH BECOMING ESTABLISHED OVER THE
CNTRL U.S. BY 12Z SUNDAY. LOW-AMPLITUDE SHORTWAVE TROUGH INITIALLY
OVER THE SERN STATES EARLY IN THE DAY WILL EXIT THE ATLANTIC
SEABOARD LATER IN THE AFTERNOON. FARTHER WEST A SRN STREAM SHORTWAVE
TROUGH WILL MOVE THROUGH TX SATURDAY NIGHT. AT THE SFC A LARGE AREA
OF HIGH PRESSURE WILL PERSIST OVER THE ERN STATES MAINTAINING
OFFSHORE FLOW OVER THE GULF.

...S TX...

FORCING FOR ASCENT WILL INCREASE LATE SATURDAY NIGHT WITH THE
APPROACH OF THE SRN-STREAM SHORTWAVE TROUGH. WHILE RICHER LOW-LEVEL
MOISTURE WILL REMAIN OFFSHORE...MID-LEVEL LAPSE RATES WILL STEEPEN
WITH THE APPROACH OF THE TROUGH FOSTERING WEAK ELEVATED CAPE.
ELEVATED CONVECTION MAY INITIATE IN THIS REGIME AS WELL AS POTENTIAL
FOR A THUNDERSTORM OR TWO.

..DIAL.. 12/19/2014




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