Tuesday, May 27, 2008

MESO: Mesoscale Discussion 1055

ACUS11 KWNS 270745
SWOMCD
SPC MCD 270745
OKZ000-270845-

MESOSCALE DISCUSSION 1055
NWS STORM PREDICTION CENTER NORMAN OK
0245 AM CDT TUE MAY 27 2008

AREAS AFFECTED...CNTRL OK

CONCERNING...SEVERE THUNDERSTORM WATCH 377...

VALID 270745Z - 270845Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 377
CONTINUES.

THREAT FOR DAMAGING WIND AND HAIL CONTINUES ACROSS CNTRL OK. IT
APPEARS THE BOW ECHO MAY CONTINUE ESEWD THROUGH E CNTRL OK NEXT
COUPLE HOURS AND WILL LIKELY AFFECT SEMINOLE AND HUGHES COUNTIES
AFTER 08Z. WATCH MAY BE LOCALLY EXTENDED INTO HUGHES COUNTY.

EARLY THIS MORNING A CONVECTIVE OUTFLOW BOUNDARY EXTENDS FROM SWRN
MO SWWD TO A POINT OF INFLECTION/COMMA HEAD OVER N CNTRL OK THEN
SWWD THROUGH OKLAHOMA AND CADDO COUNTIES. STRONGEST STORMS ALONG
THIS BOUNDARY ARE MOVING ESEWD AT 40 TO 45 KT BUT APPEARS TO BE
ACCELERATING THROUGH CNTRL OK WHERE STORMS HAVE EVOLVED INTO A BOW
ECHO WITH A PRONOUNCED REAR INFLOW NOTCH. STRONG TO DAMAGING WIND
GUSTS ARE LIKELY NEAR THE APEX OF THE BOW. THE ATMOSPHERE DOWNSTREAM
REMAINS MODERATELY UNSTABLE AND THE WLY REAR INFLOW JET ALONG WITH A
40 KT SLY LOW LEVEL JET WILL LIKELY HELP TO MAINTAIN STRONG LIFT AND
A FORWARD PROPAGATING LINE NEXT COUPLE HOURS.

..DIAL.. 05/27/2008

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

ATTN...WFO...TSA...OUN...

35189744 35639723 35769681 35499627 35099615 34879624
34619672 34459733 34569791 34819803

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