[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 181257
SWODY1
SPC AC 181256

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0656 AM CST SAT FEB 18 2006

VALID 181300Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
FAST ZONAL FLOW WILL COVER THE SRN HALF OF THE NATION DOWNSTREAM
FROM CLOSED LOW OVER NRN CA. THE CA LOW SHOULD BEGIN TO WEAKEN LATER
THIS PERIOD AS LOW AMPLITUDE RIDGE PERSISTS OVER THE SRN GULF OF
MEXICO/BAY OF CAMPECHE.  CONFLUENT FLOW DOWNSTREAM FROM THE WRN
TROUGH WILL MAINTAIN SURFACE RIDGING ACROSS THE MS/OH VLY
REGION...AND GRADUALLY DEEPEN ARCTIC AIR MASS SPREADING S INTO THE
NRN GULF OF MEXICO.

...CA...
SATELLITE LOOPS SHOW VORT MAX WHICH ROTATED SW FROM THE WA CST AREA
IN THE LAST 24 HRS HAS NOW MOVED INTO BASE OF NRN CA LOW.  THE VORT
SHOULD MOVE INLAND ACROSS CNTRL CA LATER TODAY.  LOW LEVEL FLOW WILL
REMAIN LIGHT AND LARGELY OFFSHORE.  BUT COMBINATION OF FORCING FOR
ASCENT...MID LEVEL COOLING AND OROGRAPHIC UPLIFT MAY SUPPORT
SCATTERED LARGELY DIURNAL STORMS...MAINLY NEAR THE CST AND IN THE
KSFO/KMRY AREA.

...SERN STATES...
LAYER OF WEAK ELEVATED INSTABILITY ASSOCIATED WITH BAND OF JET
ENTRANCE REGION-INDUCED ISENTROPIC ASCENT SHOULD REMAIN TOO SHALLOW
TO SUPPORT THUNDER OVER THE UPPER SOUTH AND GULF CST STATES.

..CORFIDI.. 02/18/2006

...NOTICE...
THE STATION RELATIVE POINTS IN THIS PRODUCT WERE
DISCONTINUED ON 14 FEBRUARY 2006 AND ARE NOW AVAILABLE
IN THE FOLLOWING PRODUCTS:

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

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