Sunday, September 11, 2011

DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 110845
SWOD48
SPC AC 110844

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0344 AM CDT SUN SEP 11 2011

VALID 141200Z - 191200Z

...DISCUSSION...
SFC COLD FRONT...DISCUSSED IN DAY-2 AND DAY-3 OUTLOOKS...WILL MOVE
EWD OFF NEW ENGLAND AND MID-ATLC COASTS DURING DAY-4/14TH-15TH.
SOME POTENTIAL EXISTS FOR DIURNAL TSTMS BEFORE THIS
OCCURS...PARTICULARLY IF SLOWER SOLUTIONS SUCH AS ECMWF AND ABOUT
1/4 OF MREF/SPECTRAL MEMBERS VERIFY. HOWEVER...POTENTIAL APPEARS
TOO LOW ATTM FOR AOA 30% SVR RISK AREA GIVEN
1. PATTERN FEATURING FLOW ALOFT PARALLEL TO FRONT AND LIKELY WEAK
LAPSE RATES...ALONG WITH
2. FRINGE/INDIRECT INFLUENCES ON MASS FIELD FROM TROPICAL CYCLONE
MARIA...WHICH SHOULD BE CENTERED WELL OFFSHORE BASED ON NHC FCST.

FOR SEVERAL DAYS THEREAFTER...LARGE/CONTINENTAL ANTICYCLONE IN LOW
LEVELS WILL COVER MUCH OF CENTRAL/ERN CONUS...KEEPING SVR THREAT TOO
ISOLATED...MRGL AND/OR DEPENDENT ON MESOSCALE INFLUENCES FOR RISK
AREA AT THIS POINT IN TIME.

..EDWARDS.. 09/11/2011

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.

No comments: