[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 210247
SWOMCD
SPC MCD 210246 
NEZ000-SDZ000-210415-

MESOSCALE DISCUSSION 1804
NWS STORM PREDICTION CENTER NORMAN OK
0946 PM CDT WED JUL 20 2005

AREAS AFFECTED...S-CNTRL SD INTO N-CNTRL NEB

CONCERNING...SEVERE THUNDERSTORM WATCH 652...

VALID 210246Z - 210415Z

POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS IS EXPECTED TO PERSIST
ACROSS SERN SECTIONS OF WW 562 THROUGH 04Z. ADDITIONAL WW WILL BE
COORDINATED SHORTLY.

UPSCALE GROWTH OF MORE DISCRETE STORMS INTO AN ORGANIZED MCS APPEARS
TO BE OCCURRING FROM TRIPP COUNTY SD SWD INTO KEYA PAHA AND BROWN
COUNTIES OF N-CNTRL NEB. SRN FLANK OF THIS EVOLVING SYSTEM /WHICH
HAS EXHIBITED SUPERCELL STRUCTURES/ HAS RECENTLY PRODUCED A WIND
GUSTS TO 69 KTS AT VTN AND 61 KTS AT ANW. GIVEN CURRENT MOTION OF
290-300/30-40KTS...LEADING EDGE OF MCS WILL MOVE OUT OF WW 562
BETWEEN 0300-0330Z.

GIVEN MODERATE TO STRONGLY UNSTABLE AIR MASS IN PLACE ACROSS N-CNTRL
NEB...IT APPEARS THAT MCS WILL REMAIN CAPABLE OF LARGE HAIL AND
ESPECIALLY DAMAGING WINDS. SHOULD MCS BEGIN TO
FORWARD-PROPAGATE/ACCELERATE...A MORE WIDESPREAD DAMAGING WIND
THREAT WILL BECOME LIKELY INTO PORTIONS OF NERN NEB.

..MEAD.. 07/21/2005

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

ATTN...WFO...FSD...OAX...ABR...GID...LBF...UNR...

42590049 43539935 42479694 41409727 41700012 

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