[LeArc] SPC MESOSCALE DISCUSSION 0676 (Map inc us)

[Duane Whittingham]

SPC MESOSCALE DISCUSSION 0676 FOR NRN MO/NE KS/SE NE
CONCERNING...SEVERE THUNDERSTORM WATCH 234...
   
VALID 060443Z - 060700Z
   
CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED FOR POSSIBILITY OF
NEW WW ACROSS NORTHEAST MISSOURI AND NORTHWEST ILLINOIS AFTER 06Z.
   
CONVECTIVE CLUSTER CONTINUES TO EVOLVE OVER PARTS OF NORTHWEST/WEST
CENTRAL MISSOURI...WITH LOW/MID-LEVEL VORTICITY CENTER NOW JUST
NORTH OF KANSAS CITY MO.  MESO-HIGH HAS BROADENED/WEAKENED DURING
THE PAST HOUR OR SO...AND EXTENDED ALONG AN AXIS FROM TOPEKA KS TO
CHILLICOTHE MO AT 04Z.  WHILE THREAT FOR DAMAGING WIND GUSTS
APPEARS TO HAVE AT LEAST TEMPORARILY DECREASED...ISOLATED STRONG
CELLS PERSIST IN WAKE OF CONVECTIVE SYSTEM...NEAR OUTFLOW BOUNDARY
SOUTH AND WEST OF KANSAS CITY...AND ALONG MID-LEVEL BAROCLINIC ZONE
NORTH OF OUTFLOW BOUNDARY ACROSS SOUTHEAST NEBRASKA.  THESE CELLS
WILL DEVELOP EASTWARD INTO WW 234 ACROSS NORTHWEST MISSOURI DURING
THE NEXT 2 TO 3 HOURS...WITH ISOLATED LARGE HAIL BECOMING PRIMARY
THREAT. 
   
OTHERWISE...VORTICITY CENTER AND ASSOCIATED MID-LEVEL TROUGH ARE
PROGGED TO CONTINUE EAST NORTHEASTWARD INTO THE MIDDLE MISSISSIPPI
VALLEY...WITH 4O TO 50 KT WESTERLY MID-LEVEL JET INTENSIFYING AS IT
PROPAGATES ACROSS NORTHERN MISSOURI OVERNIGHT.  THIS PROVIDES SOME
POTENTIAL FOR INCREASING THREAT OF DAMAGING WIND GUSTS...ALTHOUGH
THERMODYNAMIC PROFILES IN MODEL FORECAST SOUNDINGS DO NOT APPEAR
PARTICULARLY SUPPORTIVE.
   
..KERR.. 05/06/02
   

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