Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 678
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT SAT AUG 8 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EASTERN MINNESOTA
WESTERN WISCONSIN
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 3 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 75 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHWEST OF
MANKATO MINNESOTA TO 60 MILES EAST OF EAU CLAIRE WISCONSIN. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 677...
DISCUSSION...UPPER IMPULSE OVER THE ERN DAKOTAS IS EXPECTED TO AID
IN INCREASED STORM DEVELOPMENT ACROSS ERN MN AND WRN WI INTO THE
EVENING HOURS. EFFECTIVE SHEAR NEAR 50 KT AND EXTREME INSTABILITY
AROUND 5000 J/KG WILL BE FAVORABLE FOR INTENSE SUPERCELLS WITH VERY
LARGE HAIL AND WIND DAMAGE. ALTHOUGH THE LOW LEVEL SHEAR IS ONLY
AROUND 15 KT...THE PRESENCE OF LOW LEVEL BOUNDARIES AND AMOUNT OF
INSTABILITY MAY COMPENSATE FOR THE WEAKER LOW LEVEL SHEAR AND YIELD
A COUPLE OF TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.
...IMY
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 678 TORNADO MN WI 082045Z - 090300Z
AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
35NNW MKT/MANKATO MN/ - 60E EAU/EAU CLAIRE WI/
..AVIATION COORDS.. 65NM N/S /42ENE RWF - 52E EAU/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 24035.
LAT...LON 45779419 45959025 43779025 43599419
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 678 Status Report Messages:
STATUS REPORT #4 ON WW 678
VALID 090130Z - 090240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 E FRM TO
5 E STC TO 70 NW EAU TO 60 W RHI TO 55 NE EAU TO 40 WSW RHI.
..MEAD..08/09/09
ATTN...WFO...MPX...ARX...DLH...
&&
STATUS REPORT FOR WT 678
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC003-009-013-019-025-037-043-047-049-053-059-079-123-131-139-
141-147-157-161-163-171-090240-
MN
. MINNESOTA COUNTIES INCLUDED ARE
ANOKA BENTON BLUE EARTH
CARVER CHISAGO DAKOTA
FARIBAULT FREEBORN GOODHUE
HENNEPIN ISANTI LE SUEUR
RAMSEY RICE SCOTT
SHERBURNE STEELE WABASHA
WASECA WASHINGTON WRIGHT
$$
WIC005-011-017-019-033-035-053-091-093-095-107-109-119-121-
090240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
BARRON BUFFALO CHIPPEWA
CLARK DUNN EAU CLAIRE
JACKSON PEPIN PIERCE
POLK RUSK ST. CROIX
TAYLOR TREMPEALEAU
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 678
VALID 082330Z - 090040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MEAD..08/08/09
ATTN...WFO...MPX...ARX...DLH...
&&
STATUS REPORT FOR WT 678
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC003-009-013-019-025-037-039-043-045-047-049-053-059-065-079-
095-097-099-109-115-123-131-139-141-147-157-161-163-169-171-
090040-
MN
. MINNESOTA COUNTIES INCLUDED ARE
ANOKA BENTON BLUE EARTH
CARVER CHISAGO DAKOTA
DODGE FARIBAULT FILLMORE
FREEBORN GOODHUE HENNEPIN
ISANTI KANABEC LE SUEUR
MILLE LACS MORRISON MOWER
OLMSTED PINE RAMSEY
RICE SCOTT SHERBURNE
STEELE WABASHA WASECA
WASHINGTON WINONA WRIGHT
$$
WIC005-011-013-017-019-033-035-053-091-093-095-099-107-109-113-
119-121-129-090040-
WI
. WISCONSIN COUNTIES INCLUDED ARE
BARRON BUFFALO BURNETT
CHIPPEWA CLARK DUNN
EAU CLAIRE JACKSON PEPIN
PIERCE POLK PRICE
RUSK ST. CROIX SAWYER
TAYLOR TREMPEALEAU WASHBURN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 678
VALID 082245Z - 082340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MEAD..08/08/09
ATTN...WFO...MPX...ARX...DLH...
&&
STATUS REPORT FOR WT 678
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC003-009-013-019-025-037-039-043-045-047-049-053-059-065-079-
095-097-099-109-115-123-131-139-141-147-157-161-163-169-171-
082340-
MN
. MINNESOTA COUNTIES INCLUDED ARE
ANOKA BENTON BLUE EARTH
CARVER CHISAGO DAKOTA
DODGE FARIBAULT FILLMORE
FREEBORN GOODHUE HENNEPIN
ISANTI KANABEC LE SUEUR
MILLE LACS MORRISON MOWER
OLMSTED PINE RAMSEY
RICE SCOTT SHERBURNE
STEELE WABASHA WASECA
WASHINGTON WINONA WRIGHT
$$
WIC005-011-013-017-019-033-035-053-091-093-095-099-107-109-113-
119-121-129-082340-
WI
. WISCONSIN COUNTIES INCLUDED ARE
BARRON BUFFALO BURNETT
CHIPPEWA CLARK DUNN
EAU CLAIRE JACKSON PEPIN
PIERCE POLK PRICE
RUSK ST. CROIX SAWYER
TAYLOR TREMPEALEAU WASHBURN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 678
VALID 082140Z - 082240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MEAD..08/08/09
ATTN...WFO...MPX...ARX...DLH...
&&
STATUS REPORT FOR WT 678
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC003-009-013-019-025-037-039-043-045-047-049-053-059-065-079-
095-097-099-109-115-123-131-139-141-147-157-161-163-169-171-
082240-
MN
. MINNESOTA COUNTIES INCLUDED ARE
ANOKA BENTON BLUE EARTH
CARVER CHISAGO DAKOTA
DODGE FARIBAULT FILLMORE
FREEBORN GOODHUE HENNEPIN
ISANTI KANABEC LE SUEUR
MILLE LACS MORRISON MOWER
OLMSTED PINE RAMSEY
RICE SCOTT SHERBURNE
STEELE WABASHA WASECA
WASHINGTON WINONA WRIGHT
$$
WIC005-011-013-017-019-033-035-053-091-093-095-099-107-109-113-
119-121-129-082240-
WI
. WISCONSIN COUNTIES INCLUDED ARE
BARRON BUFFALO BURNETT
CHIPPEWA CLARK DUNN
EAU CLAIRE JACKSON PEPIN
PIERCE POLK PRICE
RUSK ST. CROIX SAWYER
TAYLOR TREMPEALEAU WASHBURN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (50%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (40%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability
of 1 or
more hailstones > 2 inches
|
High (70%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
@NWSSPC
