Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 771
NWS STORM PREDICTION CENTER NORMAN OK
1255 AM CDT TUE JUL 29 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND NORTHERN MINNESOTA
EFFECTIVE THIS TUESDAY MORNING FROM 1255 AM UNTIL 800 AM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES SOUTHEAST OF
ORTONVILLE MINNESOTA TO 45 MILES WEST NORTHWEST OF INTERNATIONAL
FALLS MINNESOTA. 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...CONTINUE...WW 769...WW 770...
DISCUSSION...THUNDERSTORMS...MOSTLY ELEVATED...WILL CONTINUE EWD IN
THE FORM OF ONE OR MORE CLUSTERS/MCSS OVERNIGHT AHEAD OF STRONG
MID/UPPER LEVEL TROUGH MOVING ACROSS MANITOBA/ND. FEED OF VERY
UNSTABLE AIR OUT OF SD/SRN MN AND EFFECTIVE SHEAR FROM 35-45 KT WILL
LIKELY SUSTAIN THREATS OF LARGE HAIL WITH ELEVATED SUPERCELLS. AS
COLD POOLS BECOME ESTABLISHED...SMALL BOWING SEGMENTS AND ISOLATED
DAMAGING WIND THREAT WILL ALSO EXIST.
AVIATION...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 25025.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 771 SEVERE TSTM MN 290555Z - 291300Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
75SE VVV/ORTONVILLE MN/ - 45WNW INL/INTERNATIONAL FALLS MN/
..AVIATION COORDS.. 55NM E/W /10WNW RWF - 39WNW INL/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25025.
LAT...LON 44529666 48819573 48819288 44529401
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 771 Status Report Messages:
STATUS REPORT #4 ON WW 771
VALID 291100Z - 291240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW HIB
TO 45 SSW INL TO 35 NW INL.
CURRENT CONVECTIVE TRENDS SUGGEST WW 771 WILL BE CANCELLED
PRIOR TO SCHEDULED 13Z EXPIRATION.
..GUYER..07/29/08
ATTN...WFO...DLH...FGF...MPX...
&&
STATUS REPORT FOR WS 771
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC071-291240-
MN
. MINNESOTA COUNTIES INCLUDED ARE
KOOCHICHING
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 771
VALID 290955Z - 291040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E BRD TO
40 W BRD.
..EVANS..07/29/08
ATTN...WFO...DLH...FGF...MPX...
&&
STATUS REPORT FOR WS 771
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC001-021-035-061-071-291040-
MN
. MINNESOTA COUNTIES INCLUDED ARE
AITKIN CASS CROW WING
ITASCA KOOCHICHING
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 771
VALID 290840Z - 290940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 W MSP TO
30 WSW STC TO 45 WNW AXN.
..EVANS..07/29/08
ATTN...WFO...DLH...FGF...MPX...
&&
STATUS REPORT FOR WS 771
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC001-007-009-021-029-035-041-057-061-065-071-077-095-097-135-
141-145-153-159-171-290940-
MN
. MINNESOTA COUNTIES INCLUDED ARE
AITKIN BELTRAMI BENTON
CASS CLEARWATER CROW WING
DOUGLAS HUBBARD ITASCA
KANABEC KOOCHICHING LAKE OF THE WOODS
MILLE LACS MORRISON ROSEAU
SHERBURNE STEARNS TODD
WADENA WRIGHT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 771
VALID 290735Z - 290840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EVANS..07/29/08
ATTN...WFO...DLH...FGF...MPX...
&&
STATUS REPORT FOR WS 771
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MNC001-007-009-021-023-029-035-041-057-061-065-067-071-073-077-
085-093-095-097-121-129-135-141-145-149-151-153-159-171-173-
290840-
MN
. MINNESOTA COUNTIES INCLUDED ARE
AITKIN BELTRAMI BENTON
CASS CHIPPEWA CLEARWATER
CROW WING DOUGLAS HUBBARD
ITASCA KANABEC KANDIYOHI
KOOCHICHING LAC QUI PARLE LAKE OF THE WOODS
MCLEOD MEEKER MILLE LACS
MORRISON POPE RENVILLE
ROSEAU SHERBURNE STEARNS
STEVENS SWIFT TODD
WADENA WRIGHT YELLOW MEDICINE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
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 
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