[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 181636
SWODY1
SPC AC 181634

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1034 AM CST SUN DEC 18 2005

VALID 181630Z - 191200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 25 WNW OTH 40 NW MFR
30 NNW MHS 30 N RBL 55 N SAC 10 E SAC 20 WSW SCK 50 SSW SFO.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 35 WSW PIE 40 ESE
DAB.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
MID/UPPER LEVEL SHORTWAVE TROUGH WILL ADVANCE EWD ACROSS THE GREAT
LAKES AND UPPER MS VALLEY TODAY.  MEANWHILE...MID/UPPER LEVEL LOW
OFF THE NRN CA COAST IS FORECAST TO LIFT NNEWD AND WEAKEN INTO A
TROUGH AS IT MOVES OVER WRN WA TONIGHT.  SURFACE RIDGING OVER THE
NRN AND CENTRAL PLAINS EXTENDS EWD INTO OH/PA/WV THEN SWD INTO TN
VALLEY AND TX.

...SRN HALF OF THE FL PENINSULA...

WEAK SFC WAVES/LOWS WILL MOVE ENEWD ALONG QUASISTATIONARY FRONTAL
BOUNDARY ACROSS CENTRAL FL TODAY...SAGGING IT SWD INTO SRN FL
TONIGHT.  AIR MASS S OF THE BOUNDARY REMAINS WARM AND MARGINALLY
UNSTABLE WITH TEMPERATURES IN THE UPR 70S/LOW 80S AND DEW POINTS IN
THE LOWER 70S GIVING LIFTED INDICES AROUND -2. LATEST LIGHTNING
DATA SHOWS WEAKENING ACTIVITY OFF THE WRN COAST...BUT WITH SOME
HEATING TODAY...ISOLATED/SCATTERED THUNDERSTORMS WILL REMAIN
POSSIBLE S OF THE FRONTAL BOUNDARY.

...SWRN OREGON INTO NWRN CA...

LIGHTNING DATA SHOWS TREND OF THUNDERSTORM ACTIVITY OFF THE CA COAST
AROUND UKIAH IS MOVING NEWD IN ASSOCIATION WITH MID/UPPER LEVEL
TROUGH SWINGING NEWD OFF THE NWRN CA COAST.  MODELS INDICATE THUNDER
 PROBABILITIES WILL MOVE INTO CA N OF THE SFO BAY AREA INTO SWRN
OREGON THE REMAINDER OF THE PERIOD.

..MCCARTHY.. 12/18/2005

...NOTICE...
THE STATION RELATIVE POINTS IN THIS PRODUCT WILL BE
DISCONTINUED ON 14 FEBRUARY 2006 BUT WILL REMAIN AVAILABLE
IN THE FOLLOWING PRODUCTS:

   WMO HEADER:       AWIPS ID:
   WUUS01            PTSDY1
   WUUS02            PTSDY2
   WUUS03            PTSDY3

A SERVICE CHANGE NOTICE ...SCN05-39... PROVIDES DETAILS
ON THE TRANSITION. FOR ADDITIONAL DETAILS SEE THE FOLLOWING
WEB ADDRESS USING LOWER CASE LETTERS:
WWW.NWS.NOAA.GOV/OM/NOTIF.HTM