SWOD48
SPC AC 230817
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0317 AM CDT SAT AUG 23 2008
VALID 261200Z - 311200Z
MEDIUM RANGE MODELS CONTINUE TO FORECAST A LEAD SHORTWAVE TROUGH
MOVING EWD ACROSS THE NRN ROCKIES INTO THE NRN PLAINS EARLY IN THE
DAY 4 TO 8 PERIOD. FROM HERE...THE MODELS REMAIN IN FAIRLY GOOD
AGREEMENT WITH A DEEPENING LARGE-SCALE UPPER-LEVEL TROUGH MOVING EWD
FROM THE NRN PLAINS INTO THE UPPER MIDWEST BY THURSDAY OF NEXT WEEK.
A SUBSTANTIAL SEVERE WEATHER THREAT MAY DEVELOP WITH THIS SYSTEM AS
THE UPPER-LEVEL TROUGH INTERACTS WITH A MOIST AXIS FORECAST TO BE
PRESENT IN THE MID-MO VALLEY AND UPPER MS VALLEY. HOWEVER...TIMING
OF THE UPPER-LEVEL TROUGH AND THE AMOUNT OF MOISTURE RETURN AHEAD OF
THE SYSTEM REMAIN HIGHLY QUESTIONABLE. ATTM...TOO MUCH UNCERTAINTY
EXISTS TO FORECAST A SEVERE WEATHER THREAT AREA ACROSS THE NCNTRL
STATES.
..BROYLES.. 08/23/2008
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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:
Post a Comment