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MESOSCALE DISCUSSION 0594
NWS STORM PREDICTION CENTER NORMAN OK
1115 PM CDT SUN APR 26 2009
AREAS AFFECTED...PORTIONS SERN IA...NRN-WRN MO AND ERN KS.
CONCERNING...TORNADO WATCH 194...
VALID 270415Z - 270515Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 194 CONTINUES.
MOST OF WW HAS BEEN CLEARED ALREADY...INCLUDING IA SECTION. SVR
POTENTIAL HAS DIMINISHED SUBSTANTIALLY AND REMAINING PORTIONS WW MAY
BE CLEARED AT OR BEFORE SCHEDULED 05Z EXPIRATION TIME...AS LEADING
EDGE OF CONVECTION MOVES THROUGH AND OUT OF ERN PORTIONS WW.
QLCS FROM SERN IA SWWD ACROSS N-CENTRAL/W-CENTRAL MO AND ERN KS
REASONABLY SHOWS WEAKENING TREND...AS IT MOVES INTO PROGRESSIVELY
MORE STABLE AND DRY NEAR-SFC AIR MASS. EXPECT CONTEMPORANEOUS
INCREASE IN SBCINH AND DECREASE IN FORCED ASCENT ALONG LEADING EDGE
OF COLD POOL...CONTRIBUTING TO FURTHER WEAKENING. PRIND SVR
POTENTIAL HAS DIMINISHED SUCH THAT ADDITIONAL WW IS UNLIKELY.
..EDWARDS.. 04/27/2009
ATTN...WFO...LSX...DVN...SGF...DMX...EAX...
LAT...LON 38099493 39629355 40939260 42569177 42159130 40719172
40159211 38949292 38109380 37819452 38099493
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