SWOMCD
SPC MCD 180455
ARZ000-TXZ000-OKZ000-180600-
MESOSCALE DISCUSSION 0657
NWS STORM PREDICTION CENTER NORMAN OK
1155 PM CDT THU APR 17 2008
AREAS AFFECTED...NERN THROUGH SOUTH CENTRAL TX
CONCERNING...SEVERE THUNDERSTORM WATCH 205...206...
VALID 180455Z - 180600Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
205...206...CONTINUES.
REGIONAL RADARS INDICATED A 360 MILE LONG QUASI-LINEAR LINE OF TSTMS
EXTENDING FROM NERN TX /HOPKINS COUNTY/ SWWD TO MAVERICK COUNTY IN
SOUTH CENTRAL TX. AREA WIND PROFILERS/WSR-88D VWP DATA INDICATED A
50-60 KT SLY LLJ E OF THIS CONVECTIVE LINE IN ERN TX...WHICH SHOULD
MAINTAIN NWD INFLUX OF MOISTURE INTO ADVANCING SQUALL LINE. GIVEN
STRENGTH OF LOW LEVEL WINDS COMBINED WITH COLD POOL ENHANCEMENT...AT
LEAST LOCALLY STRONG WIND GUSTS REMAIN LIKELY AS THIS LINE MOVES
SEWD OVERNIGHT. HEIGHT FALLS WITH DEEPENING UPPER TROUGH OVER THE
SRN PLAINS DURING THE NEXT 6 HOURS AND WAA ALONG LLJ AXIS ARE
EXPECTED TO MAINTAIN CONVECTIVE LINE INTO PARTS OF THE TX COASTAL
PLAIN. NEW WW IS NOT EXPECTED AT THIS TIME...BUT GIVEN STRENGTH OF
LLJ...CONVECTIVE TRENDS WILL NEED TO BE MONITORED OVERNIGHT.
..PETERS.. 04/18/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LZK...SHV...TSA...HGX...FWD...CRP...EWX...
28800058 29739932 30179832 30609766 31279735 32019645
32849597 33219576 33819567 34549563 34649487 34499449
33989439 32859467 31879463 30549571 29459731 28489887
27999991
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