Sunday, November 18, 2007

DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 190045
SWODY1
SPC AC 190042

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0642 PM CST SUN NOV 18 2007

VALID 190100Z - 191200Z

..NO TSTM AREAS FORECAST...

..S-CNTRL/SERN TX INTO THE LOWER MS VALLEY...

LATEST MESOANALYSIS AND 00Z OBSERVED REGIONAL SOUNDINGS INDICATE
THAT A RELATIVELY MOIST AND WEAKLY UNSTABLE AIR MASS IS PRESENT THIS
EVENING FROM DEEP S TX EWD INTO AR/LA. HOWEVER...IT APPEARS THAT
STRONGER LARGE-SCALE FORCING FOR ASCENT ASSOCIATED WITH
DE-AMPLIFYING SHORT WAVE TROUGH OVER THE LOWER MS VALLEY IS SHIFTING
E OF THIS WEAKLY UNSTABLE ENVIRONMENT. WHILE SOME POTENTIAL WILL
EXIST FOR ISOLATED LIGHTNING STRIKES OVER THE NWRN GULF OF MEXICO
AND PERHAPS DEEP S TX OVERNIGHT...AREAL COVERAGE IS EXPECTED TO
REMAIN TOO LIMITED TO WARRANT INCLUSION OF A GENERAL THUNDER AREA.

.MEAD.. 11/19/2007

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