SWOMCD
SPC MCD 170733
LAZ000-170830-
MESOSCALE DISCUSSION 0250
NWS STORM PREDICTION CENTER NORMAN OK
0133 AM CST SUN FEB 17 2008
AREAS AFFECTED...SWRN TO SOUTH CENTRAL LA
CONCERNING...TORNADO WATCH 59...
VALID 170733Z - 170830Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 59 CONTINUES.
AT 0730Z...REGIONAL RADARS INDICATED PRE-FRONTAL SQUALL LINE
EXTENDING FROM NERN TO SOUTH CENTRAL LA...WITH SRN EXTENT NOW MOVING
THROUGH ERN PART OF WW 59. SEVERE THREAT SHOULD CONTINUE TO
DECREASE WITH PASSAGE OF THIS SQUALL LINE...GIVEN GREATEST
INSTABILITY WAS OBSERVED ALONG AND E OF THIS LINE IN SOUTH CENTRAL
AND SERN LA. ALTHOUGH INSTABILITY IS SOMEWHAT MARGINAL...STRONG
KINEMATICS COMBINED WITH RICH LOW LEVEL MOISTURE IN SRN LA /SURFACE
DEWPOINTS IN THE LOWER 60S/ WILL CONTINUE TO SUPPORT A NONZERO
THREAT FOR AN ISOLATED TORNADO.
.PETERS.. 02/17/2008
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LCH...
28349431 29839353 30259306 31099281 31419246 31449220
30359211 29209218 28769302
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