SPC Day 1 Thunderstorm Outlook Issued 16Z 20031214


ZCZC SPCSWODY1 ALL
ACUS01 KWNS 141611
SPC AC 141611

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1011 AM CST SUN DEC 14 2003

VALID 141630Z - 151200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 60 SSE CTY 20 SE JAX.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 15 SSW SEA 70 NNE MFR
20 N MHS 30 WSW WMC 20 WNW OGD 25 NNW GJT 30 NNE CEZ 55 WSW FMN 70 N
INW 40 SW GCN 55 SSW LAS 15 WNW EDW 25 NW SMX.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 SSE OAJ 45 NE RWI
10 NW NHK 25 ENE ABE 20 E POU 25 ESE BOS.

...NO SVR TSTM AREAS FORECAST...

PROGRESSIVE UPPER PATTERN EXISTS ACROSS THE UNITED STATES TODAY...AS
STRONG TROUGH TRACKS EASTWARD ACROSS THE UPPER OH VALLEY AND MID
ATLANTIC STATES...AND A SECOND TROUGH DIGS RAPIDLY EASTWARD TOWARD
THE GREAT BASIN.  MAIN SURFACE BAROCLINIC ZONE EXTENDS FROM NEAR THE
OUTER BANKS OF NC SOUTHWESTWARD ACROSS CENTRAL FL.  SCATTERED
SHOWERS/THUNDERSTORMS ARE OCCURRING ALONG THIS AXIS...AND WILL
PERSIST THROUGH THE DAY.  TROPICAL AIRMASS HAS MOVED INTO SOUTH
FL...WHERE MODERATE INSTABILITY AND FAVORABLE DEEP LAYER VERTICAL
SHEAR ARE PRESENT.  THIS MAY RESULT IN ISOLATED STRONG/SEVERE GUSTS
FOR A FEW HOURS THIS MORNING OR EARLY AFTERNOON BEFORE ACTIVITY
MOVES OFFSHORE.  REFER TO MCD NUMBER 2611 FOR FURTHER DETAILS. LINE
OF STORMS HAS CLEARED THE OUTER BANKS OF NC...ENDING SEVERE THREAT
IN THAT REGION.

NEXT UPPER SYSTEM IS ROTATING INTO NORTHERN CA THIS MORNING...
SLIGHTLY FASTER THAN EARLIER PROGD.  PRESENT INDICATIONS ARE THAT
COLD THERMODYNAMIC PROFILES AND LIMITED MOISTURE WILL LIMIT THE RISK
OF STRONG THUNDERSTORMS TODAY IN THAT REGION.

..HART/TAYLOR.. 12/14/2003

...NOTICE...
FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.

$$