Thursday, July 10, 2008

MESO: Mesoscale Discussion 1755

ACUS11 KWNS 102342
SWOMCD
SPC MCD 102342
AZZ000-NVZ000-CAZ000-110045-

MESOSCALE DISCUSSION 1755
NWS STORM PREDICTION CENTER NORMAN OK
0642 PM CDT THU JUL 10 2008

AREAS AFFECTED...LOWER CO RIVER VALLEY

CONCERNING...SEVERE THUNDERSTORM WATCH 679...

VALID 102342Z - 110045Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 679
CONTINUES.

PRIMARY THREAT FOR SEVERE WIND GUSTS SHOULD REMAIN TIED TO A QLCS
STRETCHING FROM NEAR IGM THEN S AND E TO AROUND 40 SW PRC AS OF
2330Z. ASSOCIATED COLD POOL HAS BECOME MORE WELL-DEFINED /WITH
SURFACE TEMPERATURES DROPPING AROUND 30 DEG F PER MESONET
OBSERVATIONS/. RECENT RADAR TRENDS SUGGEST MCS HAS ACCELERATED TO
AROUND 30-35 KT. UPPER 50S TO MIDDLE 60S CONTINUE TO HOLD DOWNSTREAM
ACROSS THE LOWER CO RIVER VALLEY...RESULTING IN MODERATE INSTABILITY
AND PROBABLE MAINTENENCE OF THE MCS AS IT TRACKS SWWD. HIGH
DCAPES...FROM 1500 TO 2000 J/KG...WILL BE FAVORABLE FOR EVAPORATIVE
COOLING AND STRONG/SEVERE DOWNDRAFTS.

..GRAMS.. 07/10/2008

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

ATTN...WFO...FGZ...PSR...VEF...

34221194 33381247 32811356 32661453 32881516 33441533
34021545 35041513 35141481 35221433 35191371 34641342
34291317 34391224

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