SWOMCD
SPC MCD 011900
TXZ000-012030-
MESOSCALE DISCUSSION 1177
NWS STORM PREDICTION CENTER NORMAN OK
0200 PM CDT THU JUL 01 2010
AREAS AFFECTED...SOUTH TX AND IMMEDIATE LOWER TX COAST
CONCERNING...TORNADO WATCH 435...
VALID 011900Z - 012030Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 435 CONTINUES.
AN ISOLATED TORNADO THREAT WILL LIKELY CONTINUE ACROSS SOUTH TX AND
THE LOWER TX COAST LATE THIS AFTERNOON INTO EARLY THIS EVENING. THE
THREAT SHOULD BECOME MARGINAL ENOUGH NOT TO WARRANT NEW WW ISSUANCE
BEYOND THE 01Z EXPIRATION OF WW 435.
TROPICAL STORM ALEX IS NOW WELL INLAND ACROSS NRN MEXICO WITH IR
SATELLITE IMAGERY SHOWING SEVERAL RAINBANDS AROUND THE CENTER WITH
ANOTHER PRONOUNCED BAND EXTENDING EWD ACROSS SCNTRL TX INTO THE WRN
GULF OF MEXICO. NEW CELLS HAVE BEEN INITIATING JUST SOUTH OF THIS
BAND WHERE SOME BREAKS IN THE CLOUD COVER ARE HELPING TO MAINTAIN
MODERATE INSTABILITY. IN ADDITION...OBJECTIVE ANALYSIS IS ESTIMATING
0-1 KM SHEAR VALUES IN THE 25 TO 35 KT RANGE ACROSS MOST OF THE
SOUTH TX. THIS ALONG WITH THE INSTABILITY AND LCL HEIGHTS AROUND OR
JUST BELOW 500 METERS SHOULD SUPPORT AN ISOLATED TORNADO THREAT WITH
THE MORE PERSISTENT ROTATING STORMS.
..BROYLES.. 07/01/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...HGX...CRP...EWX...BRO...
LAT...LON 25949685 25989731 25899742 26089769 26139819 26279856
26439912 27089942 27339953 27579950 27639959 27909993
28160017 28239940 28649940 28659835 28799809 28669777
28929746 28889734 29129694 28589658 28189613 27879657
27489690 27149708 26699700 26039685 25989686 25949685
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