Quote:
Originally Posted by chicagogeorge
The most destructive type of thunderstorms
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I'm not sure when the last official derecho here was. Bow echo storms occur occasionally.
I recall a derecho back on May 3, 2009 which occurred during the morning hours.
MESOSCALE DISCUSSION 0686
NWS STORM PREDICTION CENTER NORMAN OK
0924 AM CDT SUN MAY 03 2009
AREAS AFFECTED...LA...MS...NWRN AL...SERN TX
CONCERNING...SEVERE THUNDERSTORM WATCH 231...232...
VALID 031424Z - 031530Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
231...232...CONTINUES.
WELL DEFINED...FAST-MOVING DERECHO IS PROGRESSING EWD ACROSS LA AT
ROUGHLY 60KT. THIS MCS WILL SOON OVERTAKE A DISCRETE
SUPERCELL...TENSAS PARISH LA...THAT HAS DEVELOPED ALONG WRN FLANK OF
OUTFLOW FROM MS CONVECTION. AT THE CURRENT SPEED IT APPEARS THE
DERECHO WILL BE DEEP INTO WW232 BY 16Z...POSSIBLY NEAR THE AL BORDER
BY 17Z. NEEDLESS TO SAY THE DAMAGING WIND POTENTIAL IS QUITE HIGH
AHEAD OF BOW APEX ALONG TRAILING OUTFLOW.