[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 260022
SWODY1
SPC AC 260020

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0720 PM CDT TUE OCT 25 2005

VALID 260100Z - 261200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 20 WSW P68 BAM BOI 50
NNE SUN PIH 20 ESE EVW 25 NW MTJ 10 E ALS 55 NNE SAF GNT 45 ENE INW
50 W GCN 20 NNW P38 20 WSW P68.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 30 NE BLI 10 E PDX 40
WNW OTH.

...NO SVR TSTM AREAS FORECAST...

DEEPENING SURFACE CYCLONE OFF THE SOUTHERN NEW ENGLAND COAST WILL
SLOWLY LIFT NORTHWARD TOWARD DOWNEAST MAINE/WESTERN NEW BRUNSWICK
THROUGH THE REMAINDER OF THIS FORECAST PERIOD. IN ITS WAKE...
BENEATH HIGH AMPLITUDE UPPER TROUGH...MUCH OF THE NATION EAST OF THE
ROCKIES HAS BEEN STABILIZED.

UPSTREAM...LARGE-SCALE TROUGH OVER THE NORTHEAST PACIFIC CONTINUES
TO SLOWLY BROADEN...WITH VIGOROUS EMBEDDED SHORT WAVE TROUGH NOW
LIFTING INTO THE PACIFIC NORTHWEST COAST.  AS LATTER FEATURE
CONTINUES NORTHEASTWARD OVERNIGHT....SOUTHERN STREAM CLOSED LOW WILL
PROGRESS SLOWLY EAST OF THE SOUTHERN PLATEAU INTO THE FOUR CORNERS
REGION...AND BROADER SCALE UPPER RIDGING WILL WEAKEN ACROSS  THE
INTERMOUNTAIN WEST/ROCKIES AND HIGH PLAINS.

...PACIFIC NORTHWEST...
FRONTAL BAND IS PROGRESSING ONSHORE...AND MOIST WEAK ONSHORE FLOW
WILL DEVELOP ACROSS THE WESTERN SLOPES OF THE NORTHERN CASCADES AND
OLYMPICS LATER THIS EVENING.  ACCOMPANIED BY STRONG MID-LEVEL
COOLING...SCATTERED THUNDERSTORMS APPEAR POSSIBLE BY THE 26/04-06Z
TIME FRAME.  THIS MAY CONTINUE INTO THE OVERNIGHT HOURS...BUT SHOULD
DIMINISH TOWARD 26/12Z AS SHORT WAVE PROGRESSES OFF TO THE EAST AND
FORCING WEAKENS.

...GREAT BASIN...
SOME DECREASE IN COVERAGE OF THUNDERSTORM ACTIVITY...ASSOCIATED WITH
SOUTHERN STREAM TROUGH...ALREADY APPEARS TO BE ONGOING.  THIS REMAIN
THE GENERAL TREND NEXT FEW HOURS WITH LOSS OF SURFACE HEATING. 
HOWEVER...A FEW THUNDERSTORMS MAY CONTINUE INTO LATE EVENING WITH
STRONGER FORCING SHIFTING TOWARD THE IMMEDIATE FOUR CORNERS AREA BY
06Z.  MODELS GENERALLY SUGGEST THIS POTENTIAL WILL THEN DIMINISH
OVERNIGHT.

..KERR.. 10/26/2005

...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.