SWOMCD
SPC MCD 240222
IAZ000-MOZ000-NEZ000-SDZ000-240315-
MESOSCALE DISCUSSION 0360
NWS STORM PREDICTION CENTER NORMAN OK
0922 PM CDT FRI APR 23 2010
AREAS AFFECTED...ERN-N CENTRAL NEB AND FAR WRN IA
CONCERNING...TORNADO WATCH 85...
VALID 240222Z - 240315Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 85 CONTINUES.
SCATTERED THUNDERSTORMS CONTINUE TO FORM/EVOLVE ALONG OCCLUDED FRONT
OVER MAINLY ERN NEB. ONE CLUSTER OF STORMS OVER WRN PORTIONS OF THE
OMAHA METRO AREA HAS RECENTLY DISPLAYED BOWING TENDENCIES...WHILE
CELLS TO ITS N-NW AND S HAVE REMAINED SOMEWHAT MORE DISCRETE.
INSTABILITY AXIS RESIDES GENERALLY ALONG THE FRONTAL BOUNDARY...WITH
SURFACE DEWPOINTS NEAR 60 DEG F AND MLCAPE VALUES RANGING FROM
1000-1500 J/KG /PER SFCOA DATA/. WINDS AHEAD OF THE FRONT HAVE
TENDED TO BACK TOWARDS ELY AND INCREASE IN SPEED...LEADING TO
IMPROVING VERTICAL WIND SHEAR PROFILES FOR SUPERCELLS...WITH 0-1 KM
SRH VALUES AROUND 200 M2/S2 AND 0-6 KM BULK SHEAR NEAR 50 KT BASED
ON OMAHA VWP. THIS ENVIRONMENT WILL CONTINUE TO FAVOR A THREAT FOR
LARGE HAIL/DAMAGING WINDS AND AN ISOLATED TORNADO DURING THE NEXT
SEVERAL HRS ACROSS WW 85.
..GARNER.. 04/24/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DMX...EAX...FSD...OAX...GID...LBF...UNR...
LAT...LON 43259964 42099550 40489550 41669966 43259964
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