[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 270549
SWODY1
SPC AC 270546

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1246 AM CDT TUE SEP 27 2005

VALID 271200Z - 281200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 60 WSW TUS 20 SSW PHX
35 ENE TRM 50 E NID 45 ENE SCK 35 WSW TVL 15 N LOL 20 N OWY 30 WNW
IDA 50 SW COD 20 SW CPR 35 NNE CYS 25 NE SNY 20 WSW BBW 20 SW OLU 15
WSW FNB 20 E EMP 35 N END 45 W GAG 15 SE CNM 75 SE ELP ...CONT... 60
E CRP 35 NW VCT 20 E AUS 50 SSE DAL 50 N GGG 35 SSE TXK 15 W MLU 40
NW BTR 25 ENE MSY PNS 45 ESE MCN 35 SSW FLO 45 SSW HSE.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 75 NE CMX 40 S CMX 35
WSW RHI 20 NW EAU 40 N MSP BRD 40 W HIB 40 E INL.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
NRN STREAM WLYS WILL BEGIN TO EDGE SWD INTO THE NRN TIER OF THE
COUNTRY ON TUE.  AN EMBEDDED SHORTWAVE TROUGH WILL QUICKLY TRANSLATE
SEWD FROM THE CANADIAN ROCKIES TO THE NRN PLAINS BY EARLY WED. A
CUT-OFF LOW WITHIN THE SRN STREAM WILL EJECT SLOWLY EWD ACROSS THE
GRT BASIN TUE AFTN/NITE AS AN OPEN WAVE.  AT THE SURFACE...A COLD
FRONT WILL ACCOMPANY THE CANADIAN TROUGH...REACHING THE CNTRL PLAINS
BY WED MORNING. AN OLD FRONT WILL BE SITUATED ACROSS THE GULF
COASTAL STATES. 

...GRT BASIN...
PWATS CONTINUE TO INCREASE AHEAD OF THE UPPER SYSTEM APPROACHING THE
REGION.  THIS PLUME OF MID/HIGH-LEVEL MOISTURE WILL CONTRIBUTE TO
INCREASING CONVECTION WITHIN A WARM CONVEYER EXPECTED TO BE SITUATED
ACROSS THE CNTRL/ERN GRT BASIN TUE AFTN.  CLOUDS/SHOWERS WILL LIKELY
RETARD HEATING AND LIMITED INSTABILITY DURING PEAK HEATING.  BUT...
PRESENCE OF 50-60 KTS OF H5 FLOW ACCOMPANYING THE TROUGH WILL BE
FAVORABLE FOR STRONG TSTMS SHOULD SUFFICIENT DESTABILIZATION OCCUR. 
FUTURE OUTLOOKS MAY NEED TO INTRODUCE LOW SEVERE PROBABILITIES IF
MORE INSTABILITY INDEED MATERIALIZE. 

...CNTRL PLAINS...
CONVECTION THAT DEVELOPS UPSTREAM ACROSS THE GRT BASIN/CNTRL ROCKIES
DURING TUE AFTN IS APT TO CONTINUE SPREADING EWD IN ASSOCIATION WITH
LARGE SCALE FORCING/COOLING.  THE PLAINS AIR MASS IS EXPECTED TO
REMAIN CAPPED DURING THE AFTN...BUT AS THE LLJ DEVELOPS TUE
NIGHT...ELEVATED STORMS ARE EXPECTED TO FORM ACROSS NRN
KS/NEB...ESPECIALLY AS THE COLD FRONT BEGINS TO SURGE SWD.  MUCAPE
APPEARS THAT IT WILL BE LIMITED AND EFFECTIVE SHEAR AOB 30 KTS
LIMITING UPDRAFT STRENGTH/SEVERE PROBABILITIES.

..RACY/GUYER.. 09/27/2005

...NOTICE...
THE STATION RELATIVE POINTS IN THIS PRODUCT ARE NOW AVAILABLE
SEPARATELY UNDER THE WMO HEADINGS WUUS01 PTSDY1...
WUUS02 PTSDY2...WUUS03 PTSDY3.  THE INCLUSION OF POINTS
IN THIS DISCUSSION WILL BE DISCONTINUED AFTER THE 2005
CONVECTIVE SEASON.  A PUBLIC NOTIFICATION STATEMENT (PNS)
WILL PROVIDE DETAILS ON THE TRANSITION.