[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 221259
SWODY1
SPC AC 221258

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0658 AM CST WED FEB 22 2006

VALID 221300Z - 231200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
BROAD NRN STREAM TROUGH NOW ENTERING THE N CNTRL STATES WILL BECOME
DOMINANT JET FEATURE THIS PERIOD AS EXISTING BAND OF FAST WSW FLOW
OVER THE S CNTRL/SERN U.S. MOVES E INTO THE ATLANTIC.  AT LOWER
LEVELS...WEAK HIGH PRESSURE WILL BUILD SE ACROSS THE SRN PLNS/LWR MS
VLY/GULF CST AND SERN STATES.  THIS WILL OCCUR IN RESPONSE TO
PASSING LOW AMPLITUDE DISTURBANCES IN THE NRN STREAM...AND TO EWD
PROGRESSION/DEAMPLIFICATION OF LAST MAJOR SRN STREAM IMPULSE NOW
OVER THE SRN RCKYS.

...E TX INTO THE DEEP S...
NRN STREAM JET AXIS ACROSS THE OH VLY EARLY WED WILL MOVE E TO THE
MID ATLANTIC CST BY THIS EVE.  CORE OF ASSOCIATED SWLY LLJ WILL
CORRESPONDINGLY MOVE E OVER THE GULF CST REGION.  GULF MOISTURE WILL
CONTINUE TO SPREAD N INTO VICINITY OF DEVELOPING COLD FRONT ON
LEADING EDGE OF AFOREMENTIONED HIGH PRESSURE SURGE.  THIS SHOULD
MAINTAIN WIDESPREAD LOW CLOUDS AND FOG AHEAD OF BOUNDARY.

A BAND OR TWO OF CONVECTION SHOULD DEVELOP FROM SE TX ENE INTO PARTS
OF LA/MS/AL AND GA LATER TODAY AS TIGHTENING OF BAROCLINIC ZONE
ENHANCES ASCENT.  SEASONABLY WARM MID LEVEL TEMPERATURES AND LIMITED
SURFACE HEATING WILL MINIMIZE DESTABILIZATION. BUT SUFFICIENT
INSTABILITY MAY DEVELOP TO SUPPORT SPORADIC LIGHTNING IN STRONGER
UPDRAFTS.  THE HIGHEST PROBABILITIES FOR THUNDER SHOULD EXIST ACROSS
THE LWR MS VLY WHERE MASS CONVERGENCE WILL BE GREATEST.

...S CNTRL TX...
AN AREA OF SOMEWHAT ELEVATED THUNDER MAY DEVELOP LATE IN THE PERIOD
OVER S CNTRL TX AS REGION IS BRUSHED BY SRN END OF WRN TROUGH
BECOMING REABSORBED INTO THE WLYS.  COMPARATIVELY STEEP MID LEVEL
LAPSE RATES WILL CONTRIBUTE TO CAPE AOA 250 J/KG ON WRN EDGE OF LOW
LEVEL MOISTURE AXIS.

..CORFIDI.. 02/22/2006

...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