SWODY3
SPC AC 260645
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0145 AM CDT MON APR 26 2010
VALID 281200Z - 291200Z
...SYNOPSIS...
WRN UPPER TROUGH IS EXPECTED TO CONTINUE DIGGING SEWD WITH
TIME...EVENTUALLY EXPANDING TO INCLUDE THE WRN HALF OF THE CONUS.
AS THIS OCCURS...SURFACE CYCLOGENESIS IS FORECAST IN LEE OF THE
ROCKIES/INVOF THE NRN HIGH PLAINS. BY THE END OF THE PERIOD...A
MATURE CYCLONE IS EXPECTED TO EMERGE INTO THE NRN/CENTRAL PLAINS
REGION...WITH THE LOW EXPECTED TO BE CENTERED INVOF NEB BY THE END
OF THE PERIOD.
AS THE SURFACE LOW DEVELOPS...A COLD FRONT WILL CONTINUE CROSSING
THE ROCKIES...AND SHOULD LIE ACROSS THE CENTRAL AND SRN PLAINS LATE.
AHEAD OF THIS LOW...AN EXPANDING -- BUT RELATIVELY DRY -- WARM
SECTOR WILL SPREAD NWD ACROSS THE CENTRAL THIRD OF THE CONUS.
ATTM...IT APPEARS THAT CONVECTIVE POTENTIAL WILL REMAIN VERY
LIMITED...GIVEN THE RELATIVELY DRY WARM SECTOR /DEWPOINTS MAINLY IN
THE 40S/. WHILE INCREASING FLOW ALOFT SPREADING ACROSS THE HIGH
PLAINS WILL YIELD FAVORABLE SHEAR...ATTM POTENTIAL FOR
DESTABILIZATION AND SUBSEQUENT STORM DEVELOPMENT APPEARS TOO LOW TO
WARRANT THE INCLUSION OF EVEN A LOW-PROBABILITY THREAT AREA.
CONVECTIVE POTENTIAL MAY INCREASE A BIT AFTER DARK ACROSS THE
DAKOTAS...AS A STRONG SLY LOW-LEVEL JET OVER THE PLAINS ASCENDS ATOP
A W-E WARM FRONT...BUT EVEN HERE...LIMITED INSTABILITY EXPECTED ATTM
IMPLIES LITTLE IF ANY SEVERE THREAT.
..GOSS.. 04/26/2010
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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