SWOMCD
SPC MCD 230701
OKZ000-KSZ000-NEZ000-230830-
MESOSCALE DISCUSSION 0981
NWS STORM PREDICTION CENTER NORMAN OK
0201 AM CDT FRI MAY 23 2008
AREAS AFFECTED...NRN OK THROUGH CNTRL AND ERN KS AND ERN NEB
CONCERNING...TORNADO WATCH 339...
VALID 230701Z - 230830Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 339 CONTINUES.
PRIMARY SEVERE THREAT APPEARS TO HAVE TRANSITIONED TO ISOLATED LARGE
HAIL AND DAMAGING WIND NEXT COUPLE HOURS ACROSS REMAINING PORTION OF
WW 339. AN ISOLATED TORNADO CANNOT BE RULED OUT...MAINLY WITH STORM
MOVING THROUGH LINCOLN COUNTY IN N CNTRL OK.
THIS MORNING A SQUALL LINE...MOSTLY ELEVATED...EXTENDS FROM ERN NEB
THROUGH N CNTRL KS AND IS MOVING EAST AT ABOUT 30 KT. STORMS ON SRN
PORTION OF LINE ALONG THE KS-NEB BORDER REMAIN THE STRONGEST WHERE
UNSTABLE INFLOW ALONG THE SSELY LOW LEVEL JET IS MAXIMIZED. ISOLATED
LARGE HAIL AND DAMAGING WIND REMAIN POSSIBLE WITH THIS ACTIVITY NEXT
COUPLE HOURS. HOWEVER...AS THE STORMS MOVE EAST INTO NERN KS THEY
SHOULD ENCOUNTER LESS INSTABILITY AND WEAKER MID LEVEL LAPSE RATES.
ANOTHER CLUSTER OF STORMS CONTINUES OVER N CNTRL/NRN OK AND SRN KS.
A LONE SUPERCELL PERSISTS OVER LINCOLN COUNTY AND IS MOVING EAST.
LARGE HAIL AND ISOLATED WIND DAMAGE APPEARS TO BE THE MAIN
THREAT...BUT THIS STORM MAY BE BASED CLOSE ENOUGH TO THE SURFACE FOR
AT LEAST A MARGINAL THREAT OF AN ISOLATED TORNADO. THE STORM IS
MOVING TO THE RIGHT OF THE MEAN FLOW AND COULD AFFECT CREEK AND
PARTS OF OKFUSKEE COUNTY. AN OUTFLOW BOUNDARY TRAILS WWD THROUGH NRN
OK...AND ADDITIONAL STORMS ARE DEVELOPING ALONG THE KS/OK BORDER
WHERE THE LOW LEVEL JET IS CONTRIBUTING TO STRONG LIFT ON COOL SIDE
OF THE BOUNDARY. THIS ACTIVITY APPEARS ELEVATED WITH A THREAT FOR
MAINLY LARGE HAIL. OTHER STORMS ARE DEVELOPING ACROSS SERN KS IN
ASSOCIATION WITH AN MCV...BUT THIS FEATURE IS MOVING TOWARD WEAKER
INSTABILITY. WITH THE POSSIBLE EXCEPTION OF THE STORM MOVING TOWARD
CREEK/OKFUSKEE...OVERALL TREND SHOULD BE FOR STORMS TO WEAKEN AS
THEY APPROACH THE ERN BOUNDARY OF WW 339.
..DIAL.. 05/23/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TSA...OAX...TOP...ICT...OUN...GID...DDC...
40859696 39309639 37269606 36239620 35679664 35679695
35849810 36119898 37219949 39229951 40219811
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