SPC Day 1 Thunderstorm Outlook Issued 01Z 20031210


ZCZC SPCSWODY1 ALL
ACUS01 KWNS 100024
SPC AC 100024

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0624 PM CST TUE DEC 09 2003

VALID 100100Z - 101200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 40 WSW 7R4 20 NW HEZ
25 SSE PBF 55 NW LIT 40 S JLN 15 ESE EMP P35 35 ENE MSN 30 E APN
...CONT... 45 WNW CLE 40 NE SDF 35 WNW CHA AUO 35 S TLH.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 S 4BK 25 NW RBL 25
S SCK 10 SSE MRY.

...NO SVR TSTM AREAS FORECAST...

...LOWER MS VALLEY / CENTRAL GULF COAST REGION...
LINE OF SHOWERS / THUNDERSTORMS AHEAD OF COLD FRONT CONTINUES TO
WEAKEN AS IT ENCOUNTERS MORE STABLE AIRMASS NEAR AND EAST OF THE MS
RIVER VALLEY.  ISOLATED LIGHTNING STRIKES WILL LIKELY PERSIST ALONG
THIS LINE THROUGH THE NIGHT...PARTICULARLY NEAR THE GULF
COAST...GIVEN STRONG LOW-LEVEL CONVERGENCE ALONG PRE-FRONTAL TROUGH
AND DEGREE OF DIFFLUENCE / DIVERGENCE ALOFT.  HOWEVER...MEAGER
INSTABILITY SUGGESTS ONLY A MINIMAL SEVERE THREAT AT BEST DESPITE
FAVORABLE DEEP-LAYER WIND FIELD.

...COASTAL NRN CA...
STEEPENING LAPSE RATES AHEAD OF APPROACHING UPPER LOW MAY YIELD
MINIMAL INSTABILITY...SUFFICIENT TO ALLOW CONVECTION NOW OFF THE NRN
CA COAST TO MOVE INLAND THIS EVENING / OVERNIGHT...PRIMARILY FROM
THE SAN FRANCISCO BAY REGION NWD.

..GOSS.. 12/10/2003

...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.

$$