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April 2nd - April 5th Severe Weather


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SEVERE WEATHER STATEMENT

NATIONAL WEATHER SERVICE TOPEKA KS

701 PM CDT SUN APR 3 2011

KSC045-085-087-177-040045-

/O.CON.KTOP.SV.W.0016.000000T0000Z-110404T0045Z/

JACKSON-JEFFERSON-SHAWNEE-DOUGLAS-

701 PM CDT SUN APR 3 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT

FOR NORTHWESTERN DOUGLAS...SHAWNEE...JEFFERSON AND JACKSON

COUNTIES...

AT 654 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF

BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE

STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 12 MILES WEST OF

HOLTON TO 5 MILES SOUTHEAST OF TOPEKA...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...

GRANTVILLE...MAYETTA...HOLTON...MERIDEN...DENISON...LECOMPTON...

PERRY...PERRY LAKE...OZAWKIE...WILLIAMSTOWN...EXTREME NORTH CENTRAL

LAWRENCE...VALLEY FALLS...OSKALOOSA...MCLOUTH...NORTONVILLE AND

WINCHESTER.

THIS INCLUDES THE KANSAS TURNPIKE BETWEEN MILE MARKERS 173 AND 192.

MANY REPORTS OF ROOF DAMAGE...POWER POLES DOWN...POWER LINES DOWN

HAVE BEEN REPORTED ACROSS TOPEKA AND NORTHERN SHAWNEE COUNTY.

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AT 654 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF

BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE

STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 12 MILES WEST OF

HOLTON TO 5 MILES SOUTHEAST OF TOPEKA...MOVING EAST AT 55 MPH.

Considering that special sounding from TOP, not surprised there is enough downward momentum for that.

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Got all the way up to 81 here today and still sitting in the upper 70's. Given that and strong southerly flow through the night, I doubt we drop much below 70 before the frontal passage. I'm not sure how much that will help to maintain the storms as they approach but it can't hurt.

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MESOSCALE DISCUSSION 0329

NWS STORM PREDICTION CENTER NORMAN OK

0726 PM CDT SUN APR 03 2011

AREAS AFFECTED...ERN KS...NRN MO

CONCERNING...SEVERE THUNDERSTORM WATCH 83...

VALID 040026Z - 040130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 83

CONTINUES.

HYBRID SUPERCELL/BOW ECHO JUST E OF TOPEKA AT 0015Z IS MOVING EWD AT

50 KTS AND WILL IMPACT AREAS N OF I-70/N OF LAWRENCE AND INTO

LEAVENWORTH AND NW/N SIDES OF KANSAS CITY METRO THROUGH 01Z.

ESTIMATED 80 MPH/MEASURED 47 KTS WIND GUSTS WERE OBSERVED IN TOPEKA

WITH NUMEROUS DAMAGE REPORTS. PRIMARY CORE WAS ELEVATED N OF THE

COLD FRONT...WITH THE UPDRAFT BARELY CONNECTED TO THE BOUNDARY LAYER

AS EVIDENCED BY THE FINE LINE BEING INGESTED BY THE STORM COMPLEX.

VERY STEEP LOW-LEVEL LAPSE RATES WILL CONTINUE TO BE FAVORABLE FOR

DAMAGING WINDS...EVEN JUST N OF THE FRONT...ALONG WITH VERY LARGE

HAIL POTENTIAL.

STORMS WERE BACKBUILDING SWWD ALONG THE COLD FRONT INTO CNTRL KS

JUST NW OF NEWTON INTO THE STRONGER CAPPING INVERSION. THESE STORMS

WILL ALSO POSE A DAMAGING WIND/VERY LARGE HAIL THREAT AS THEY MOVE

ESE INTO ECNTRL KS AND ADJACENT MO OVER THE NEXT COUPLE OF HOURS.

HOW FAR W THE STORMS WILL DEVELOP IS UNCERTAIN...ALTHOUGH THE

CUMULUS FIELD DOES EXTEND AS FAR SW AS THE OK/KS BORDER BENEATH THE

CI.

..RACY.. 04/04/2011

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MESOSCALE DISCUSSION 0329

NWS STORM PREDICTION CENTER NORMAN OK

0726 PM CDT SUN APR 03 2011

AREAS AFFECTED...ERN KS...NRN MO

CONCERNING...SEVERE THUNDERSTORM WATCH 83...

VALID 040026Z - 040130Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 83

CONTINUES.

WITH THE UPDRAFT BARELY CONNECTED TO THE BOUNDARY LAYER

AS EVIDENCED BY THE FINE LINE BEING INGESTED BY THE STORM COMPLEX.

the KS cell is pretty neat:

you can see the front sagging south but just east of the cell its is stalling as the inflow likley is holding it up...then it picks up again just south of the cell with the outlow/RFD

:) -

Just wow :) - got to love nature

post-77-0-24390800-1301874716.png

SPC notice the same thing I did...that was pretty cool to watch

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