[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 181937
SWODY1
SPC AC 181935

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0135 PM CST WED JAN 18 2006

VALID 182000Z - 191200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 55 W ONP 25 NNE MFR
40 S AAT 20 SSW NFL 15 NNW FAT 30 WSW MRY.

...NO SVR TSTM AREAS FORECAST...

...SACRAMENTO VALLEY...

CLOUD BREAKS ARE CONTRIBUTING TO SURFACE HEATING OVER PORTIONS OF
THE SACRAMENTO VALLEY WITH TEMPERATURES IN THE MID 50S. MID LEVEL
THERMAL TROUGH WITH 500 MB TEMPERATURES AROUND -30C EXISTS ABOVE THE
LOW LEVEL THERMAL RIDGE...CONTRIBUTING TO STEEP LAPSE RATES AND
MARGINAL INSTABILITY. MOST OF THE LIGHTNING SO FAR HAS BEEN NEAR THE
COAST WHERE INFLUENCE OF THE MARINE LAYER HAS RESULTED IN SLIGHTLY
BETTER INSTABILITY. THUNDERSTORMS MAY BECOME MORE PROBABLE OVER THE
SACRAMENTO VALLEY THIS AFTERNOON AS THE BOUNDARY LAYER CONTINUES TO
WARM. THE STRONGER STORMS MAY BE CAPABLE OF PRODUCING SMALL HAIL
THROUGH EARLY EVENING.

..DIAL.. 01/18/2006

...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