MD 1663 CONCERNING SEVERE POTENTIAL…WATCH LIKELY FOR NWRN OK…SWRN/S-CNTRL KS
MESOSCALE DISCUSSION 1663
NWS STORM PREDICTION CENTER NORMAN OK
0902 PM CDT WED AUG 07 2013
AREAS AFFECTED...NWRN OK...SWRN/S-CNTRL KS
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 080202Z - 080330Z
PROBABILITY OF WATCH ISSUANCE...80 PERCENT
SUMMARY...SMALL LINE SEGMENT OVER THE OK PANHANDLE HAS BEGUN TO
ACCELERATE EWD...AND MAY EXIT WW 483 DURING THE NEXT 1-2 HOURS. IF
THIS OCCURS...THEN THREAT FOR DAMAGING WINDS WILL INCREASE OVER NWRN
OK INTO SWRN/S-CNTRL KS. CONVECTIVE TRENDS ARE BEING MONITORED FOR
LIKELY WW.
DISCUSSION...AS DISCUSSED IN MCD 1662...THE COMBINATION OF ELY WINDS
IN THE 1-2 KM AGL LAYER AND A VERY MOIST AND MODERATELY/STRONGLY
UNSTABLE ENVIRONMENT WILL SUPPORT UPSCALE GROWTH INTO A FORWARD
PROPAGATING MCS TONIGHT. LATEST COMPOSITE RADAR IMAGERY SHOWS SIGNS
OF THIS TAKING PLACE OVER THE OK PANHANDLE...WHERE A SMALL LINE
SEGMENT HAS INCREASED ITS EWD MOTION TO 30 KT. GIVEN THIS
TREND...ISSUANCE OF A NEW WW IS LIKELY FOR PORTIONS OF NWRN OK AND
SWRN/S-CNTRL KS DURING THE NEXT 1-2 HOURS.
..GARNER/GOSS.. 08/08/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...OUN...DDC...AMA...
LAT...LON 36520001 37839982 38259862 37699753 36139762 35609837
35579922 35839980 36520001
via SPC Forecast Products http://www.spc.noaa.gov/products/md/md1663.html
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