Tornado Watch 705

Issued

Jul 19, 2008, 5:22 PM CDT (22:22 UTC)

Expired

Jul 19, 2008, 10:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The La Crosse radar (KARX), 38 km from the middle of the area, began a volume at 22:23 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1818Jul 19, 6:56 PM CDT

000
WWUS20 KWNS 192225
SEL5  
SPC WW 192225
IAZ000-MNZ000-WIZ000-200300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 705
NWS STORM PREDICTION CENTER NORMAN OK
525 PM CDT SAT JUL 19 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       NORTHERN IOWA
       SOUTHEAST MINNESOTA
       CENTRAL AND WESTERN WISCONSIN

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 525 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHEAST OF
WAUSAU WISCONSIN TO 40 MILES SOUTH OF FORT DODGE IOWA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 702...WW 703...WW 704...

DISCUSSION...STRONG/SEVERE THUNDERSTORMS EXPECTED TO CONTINUE ESEWD
ACROSS WW THIS EVENING...INTO MODERATE TO STRONG INSTABILITY.  LATE
AFTERNOON STORMS HAVE BEEN LOOSELY ORGANIZED IN THE FORM OF CLUSTERS
AND A FEW SUPERCELLS...WITH SHEAR REMAINING SUPPORTIVE OF SUPERCELLS
AND POSSIBLE EVOLUTION INTO BOW SEGMENTS THIS EVENING.  LARGE HAIL
AND DAMAGING WINDS...ALONG WITH HEAVY RAINFALL...ARE EXPECTED OVER
MUCH OF THE WATCH AREA.  IN ADDITION...ISOLATED TORNADOES REMAIN
POSSIBLE  AS STORMS INTERACT WITH SURFACE BOUNDARY OVER CENTRAL WI
AND INGEST VERY UNSTABLE AIR ACROSS NRN IA.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 28030.


...EVANS

Tornado Watches in Iowa, 2008Tornado Watches in Wisconsin, 2008Tornado Watches in Minnesota, 2008Every tornado watch in 2008

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.