Mesoscale Discussion 182

Issued

Mar 3, 2003, 4:00 AM CST (10:00 UTC)

Expired

Mar 3, 2003, 7:00 AM CST

In force

3 hr

Issued by

the Storm Prediction Center

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 09:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

577 
ACUS11 KWNS 031001
SWOMCD
SPC MCD 031000 
TXZ000-031300-

MESOSCALE DISCUSSION 0182
NWS STORM PREDICTION CENTER NORMAN OK
0400 AM CST MON MAR 03 2003

AREAS AFFECTED...W-CENTRAL THRU SE TX

CONCERNING...CONVECTIVE TRENDS 

VALID 031000Z - 031300Z

EXPECT CONVECTION TO INCREASE ACROSS MUCH OF W-CENTRAL AND S TX
THROUGH 13Z...RESULTING IN WIDELY SCATTERED TO SCATTERED TSTMS. 
SEVERE POTENTIAL APPEARS MINIMAL BECAUSE OF WEAKNESS OF
INSTABILITY...THEREFORE WW NOT EXPECTED.  13Z DAY-1 OUTLOOK
UPDATE WILL INCLUDE A GEN TSTM FCST FOR EXTENSION OF THIS REGIME.



LARGE SCALE ASCENT/DESTABILIZATION IS STRENGTHENING OVER THIS
REGION...IN TANDEM WITH INCREASING LOW LEVEL MOISTURE ABOVE
RELATIVELY COOL/STABLE BOUNDARY LAYER.	DPVA WILL SPREAD EWD
AHEAD OF SHORTWAVE TROUGH NOW MOVING EWD ACROSS SRN NM --
BECOMING JUXTAPOSED WITH BROAD ZONE OF ELEVATED/ISENTROPIC ASCENT
NOW EVIDENT OVER MUCH OF CENTRAL/SRN TX.   MOIST PARCELS WILL BE
LIFTED TO LFC ATOP ELEVATED FRONTAL SURFACE...WITH MUCAPE OF
100-300 J/KG ROOTED IN 800-850 MB LAYER AND EXTENDING INTO
CHARGE-SEPARATION LEVELS CONDUCIVE TO LIGHTNING.

..EDWARDS.. 03/03/2003

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

27769749 27729802 28120000 29930005 31410277 31930214
32529945 31799670 30449455 28639601

Mesoscale Discussions in Texas, 2003Every mesoscale discussion in 2003

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.