Severe Weather Us August 09'

[NL]

A moderate risk has been issued by the NWS/SPC for SE South Dakota, S Minnesota and W Wisconsin with a

10% chance of a tornado. A tornado watch is in place for theses areas along with the extreme NW Iowa.

SEL7

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 677

NWS STORM PREDICTION CENTER NORMAN OK

1245 PM CDT SAT AUG 8 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

EXTREME NORTHWESTERN IOWA

WEST CENTRAL AND SOUTHWESTERN MINNESOTA

EASTERN SOUTH DAKOTA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1245 PM UNTIL

700 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST SOUTHWEST OF

BROOKINGS SOUTH DAKOTA TO 45 MILES EAST NORTHEAST OF REDWOOD

FALLS MINNESOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.

OTHER WATCH INFORMATION...CONTINUE...WW 676...

DISCUSSION...A SUPERCELL WAS LOCATED IN SERN SD AND OTHER SUPERCELLS

ARE LIKELY TO DEVELOP...AS STRONG SHORTWAVE TROUGH MOVES ENEWD

THROUGH CENTRAL SD INTO WRN MN THROUGH THE AFTERNOON. THE AMOUNT OF

DEEP LAYER SHEAR...AROUND 60 KT...AND STRONG TO EXTREME INSTABILITY

BY LATE AFTERNOON WILL SUPPORT VERY LARGE HAIL AND DAMAGING WINDS.

THE VERY MOIST BOUNDARY LAYER AND ENHANCED LOW LEVEL SHEAR NEAR

BOUNDARIES WILL BE FAVORABLE FOR TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 25030.

[MAF]

Thanks NL, not had time to keep an eye on the conditions state side. still waiting to see if the hurricane season will liven up.

[MAF]

quite an active time out there right now

http://www.spc.noaa.gov/climo/reports/last3hours.html

lots of reports of hail and strong winds across a few states

[NL]

Many reports of tornadoes this evening(17 up to now*02:00am BST) warnings on-going in Minnesota,Illinois and Indiana with several reports of homes destroyed in particular Elkhart, Logan County Illinois with 15 homes reported damaged along with 1 injury.

http://www.spc.noaa....orts/today.html

Some intense storms over Kansas presently, a Tornado watch was to be issued but withheld for extreme southern Kansas and N/Central Oklahoma.

http://www.spc.noaa....tch/ww0714.html

More here on the tornadoes that struck Illinois and along the Indiana border.

http://blogs.woodtv....order-counties/

More reported injuries and homes damaged or destroyed..

Two geezers blown off their motorbikes..!!!

Edited August 20, 2009 by NL

[SteveB]

Just to add to this.

Storms have been affecting Canada as well

http://news.bbc.co.uk/1/hi/world/americas/8213439.stm