Monday, April 23, 2007

MESO: Mesoscale Discussion 0554

ACUS11 KWNS 240323
SWOMCD
SPC MCD 240322
TXZ000-240445-

MESOSCALE DISCUSSION 0554
NWS STORM PREDICTION CENTER NORMAN OK
1022 PM CDT MON APR 23 2007

AREAS AFFECTED...PORTIONS W-CENTRAL/NW TX.

CONCERNING...TORNADO WATCH 167...

VALID 240322Z - 240445Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 167 CONTINUES.

SBCINH INCREASES SUBSTANTIALLY WITH EWD EXTENT ACROSS NWRN/N-CENTRAL
TX...WHICH INDICATES THAT HORIZONTAL SHRINKING TREND EVIDENT IN
REFLECTIVITY IMAGERY SHOULD CONTINUE FOR SUPERCELL N ABI. BEFORE
THIS STORM DISSIPATES COMPLETELY...HOWEVER...IT STILL MAY POSE
THREAT OF LARGE HAIL...STG-SVR GUSTS AND PERHAPS A TORNADO.

MEANWHILE CONVECTION ACROSS GARZA/KENT/DICKENS COUNTIES HAS
CONSOLIDATED INTO POTENTIALLY TORNADIC SUPERCELL WHICH...ACCORDING
TO MODIFIED RUC SOUNDINGS...BARELY HAS SFC-BASED EFFECTIVE INFLOW
LAYER. AS FARTHER SE...MODIFIED RAOBS AND RUC SOUNDINGS SUGGEST
STRENGTHENING SBCINH WITH TIME ACROSS NW TX IN PROJECTED PATH OF
THIS ACTIVITY...INDICATING THREAT SHOULD NOT EXTEND SPATIALLY E OF
PRESENT WW AREA. LOCAL WW EXTENSION IN TIME MAY BE REQUIRED -- FOR
A FEW COUNTIES IN PATH OF THIS ACTIVITY -- BEFORE IT DISSIPATES.
OTHERWISE...CONVECTIVE INITIATION WILL BECOME LESS PROBABLE WITH
TIME...AND WW OUTSIDE THOSE LOCALIZED THREATS MAY BE ALLOWED TO
EXPIRE AS SCHEDULED AT 4Z.

.EDWARDS.. 04/24/2007

..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...FWD...OUN...SJT...LUB...MAF...

31720087 33150125 33430183 34060183 34240013 33899906
32789890 32059923

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