[SWODY1] SWODY1

[Severe Weather Outlook Day 1]

ACUS01 KWNS 010548
SWODY1
SPC AC 010546

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1146 PM CST WED NOV 30 2005

VALID 011200Z - 021200Z

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 50 NNW UIL 40 WNW PDX
15 WNW EUG 40 NE 4BK 20 SW CEC.

GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 30 SW ACK 20 W PWM 25
N AUG 35 NE BGR 15 SE EPM.

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
ENERGETIC UPPER FLOW REGIME WILL CONTINUE ON THU.  POTENT SHORTWAVE
TROUGH MOVING ACROSS THE MID-MS VLY EARLY IN THE DAY WILL DUMBELL
NEWD AROUND THE ONTARIO POLAR VORTEX...REACHING NEW ENGLAND BY 12Z
FRI. THE POLAR VORTEX WILL REMAIN IN PLACE...BUT ANOTHER STRONG
SHORTWAVE TROUGH WILL MIGRATE SEWD INTO THE PAC NW COAST AND NRN
INTERMOUNTAIN WEST THU NIGHT AND FRI.

...COASTAL SECTIONS OF MA/MAINE...
AS THE MID-MS VLY SHORTWAVE TROUGH MOVES NEWD AND TAKES ON A STRONG
NEGATIVE TILT...CYCLOGENESIS IS EXPECTED ALONG THE RESIDUAL
BAROCLINIC ZONE JUST OFFSHORE NEW ENGLAND THU AFTN/EVE.  THIS LOW
WILL DEVELOP/TRACK NWWD JUST OFFSHORE MA AND INTO DOWNEAST MAINE BY
12Z FRI.

STRONG LOW-LEVEL WARM/MOIST ADVECTION WILL COMMENCE THU EVE AS THE
UPPER IMPULSE AND ASSOCIATED SUB-MINUS 20C H5 SWING THROUGH.  THE
COMBINATION OF RAPID LOW/MID-LEVEL CYCLOGENESIS /STRONG PVA/ AND AN
UNSTABLE COLUMN WILL RESULT IN THE POSSIBILITY OF SPORADIC TSTM
CLUSTERS FROM COASTAL MA NWD INTO DOWNEAST MAINE DURING THU
NIGHT/EARLY FRI.

...PAC NW...
CONVECTION WILL INCREASE ALONG THE COAST OF SWRN WA AND ORE LATE THU
AFTN/NIGHT IN THE POST-FRONTAL AIR MASS.  THE INCREASING MOIST
UPSLOPE FLOW AND STEEPENING LAPSE RATE ENVIRONMENT WILL CONTRIBUTE
TO SUFFICIENT DESTABILIZATION FOR SCATTERED TSTMS.  HIGHEST
PROBABILITIES WILL BE AFTER 00Z FRI.

..RACY.. 12/01/2005

...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