Gravity waves over MO. Severe weather expected.
Posted by
JAC on 5/22/2011, 12:14 pm


MESOSCALE DISCUSSION 0849 NWS STORM PREDICTION CENTER NORMAN OK 1053 AM CDT SUN MAY 22 2011 AREAS AFFECTED...MUCH OF ERN IA...NRN MO...NWRN IL...SWRN WI CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY VALID 221553Z - 221800Z CONDITIONS WILL BECOME QUITE FAVORABLE FOR SUPERCELLS AND TORNADOES LATER THIS AFTERNOON...AND ONE OR MORE TORNADO WATCHES ARE LIKELY BY MIDDAY. VISIBLE SATELLITE IMAGERY SHOWS A WELL DEFINED DRYLINE ACROSS ERN KS...NWRN MO AND INTO IA WHERE MORE EXTENSIVE CLOUD COVER EXISTED AS A RESULT OF THE UPPER VORT. MEANWHILE...A PSEUDO-WARM FRONT EXTENDING FROM CNTRL IA SEWD INTO CNTRL IL...WITH MID TO UPPER 60S F DEWPOINTS S OF THIS BOUNDARY. MORNINGS SOUNDINGS SHOWED CLASSIC LOADED GUN WITH SUBSTANTIAL BOUNDARY LAYER MOISTURE IN PLACE BENEATH A BREAKABLE CAPPING INVERSION. THE STRONGEST FORCING FOR ASCENT WILL DEVELOP FIRST ACROSS MN/IA/WI AS THE UPPER LOW CONTINUES EWD. NRN EXTENT OF THREAT AREA WILL COINCIDE WITH WARM FRONT. OTHER DEVELOPMENT WILL OCCUR SWD ALONG THE DRYLINE INTO MO AND FAR ERN KS WHERE A SUBSTANTIAL CU FIELD WAS ALREADY DEVELOPING AND WITH 3000-4000 J/KG MUCAPE. SHEAR PROFILES ARE FAVORABLE FOR SUPERCELLULAR STORM MODE CAPABLE OF A FEW STRONG TORNADOES AND VERY LARGE HAIL. ..JEWELL.. 05/22/2011 |
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In this thread:
Gravity waves over MO. Severe weather expected. - JAC, 5/22/2011, 12:14 pm- Meteorologist amazed by formation of Joplin super tornado - JAC, 5/23/2011, 4:09 pm
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