Last non tornado watch PDS watch

[dean]

just for fun, and since i dont remember, who knows the last time a PDS SEVERE THUNDERSTORM watch was issued. they are even more RARE than a PDS TOR box, since usually a non tornadic situation doesnt require PDS status, but i know there have been a few before, and i dont remember the last one. i dont think we had one last year, i know i was watching for one since they are so rare.

I think I do remember this, it was for a severe Derecho event I think.

[dean]

when?

[KyTornado]

There was one in the OH Valley last July. I'll look it up...

[KyTornado]

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 631
NWS STORM PREDICTION CENTER NORMAN OK
100 PM CDT FRI JUL 21 2006
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

SOUTHERN ILLINOIS
SOUTHERN INDIANA
WESTERN AND CENTRAL KENTUCKY
SOUTHEAST MISSOURI

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 100 PM UNTIL 800
PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...
EXTREMELY DAMAGING THUNDERSTORM WIND GUSTS TO 90 MPH...LARGE HAIL
TO 2 INCHES IN DIAMETER...AND DANGEROUS LIGHTNING ARE POSSIBLE IN
THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES NORTHWEST
OF POPLAR BLUFF MISSOURI TO 25 MILES SOUTHEAST OF LOUISVILLE
KENTUCKY. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 630. WATCH NUMBER 630 WILL NOT
BE IN EFFECT AFTER 100 PM CDT.

DISCUSSION...SEVERE THUNDERSTORMS ACROSS SRN IL INTENSIFYING FURTHER
AS THEY MOVE THRU AN EXTREMELY UNSTABLE AIR MASS. WIDESPREAD
POSSIBLY SIGNIFICANT DAMAGING WINDS WILL ACCOMPANY A WELL ORGANIZED
BOW ECHO/DERECHO THAT IS NOW MOVING EWD ACROSS SRN IL. ADDITIONAL
SEVERE THUNDERSTORMS WILL DEVELOP ALONG TRAILING BOUNDARY INTO SERN
MO WHERE AIR MASS ALSO VERY TO EXTREMELY UNSTABLE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 80
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 27035.

...HALES[/b]

Yea, that's the one I was thinking of. Hard to believe a thunderstorm could give 90mph winds. :o

[Josh Richardson]

Yea, that's the one I was thinking of. Hard to believe a thunderstorm could give 90mph winds. :o[/b]

Actually, thats not that hard to believe.* In major wind events such as that you will see winds speeds approach that almost every time.* If I remember correctly the Derecho to hit St. Louis last year was about the same thing.* That night though, there wouldnt have been a PDS for just SVR as there was a TOR threat as well.

[dean]

it isnt unheard of to have thunderstorms (namely squall lines) hit wind speed of 110 or even 120 mph, although this is on a special occasion.

Wasn't there an event of this sorts in Memphis in 03, or something?

[NWIASpotter]

There have been several events with the PDS Thunderstorm watches, mainly for the long-lived derecho or significant events such as that.* They aren't common, but it is nothing unheard of either.