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SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 460
NWS STORM PREDICTION CENTER NORMAN OK
1135 AM CDT MON AUG 21 2017

SEVERE THUNDERSTORM WATCH 460 IS IN EFFECT UNTIL 700 PM CDT
FOR THE FOLLOWING LOCATIONS

MNC033-063-101-105-117-133-220000-
/O.NEW.KWNS.SV.A.0460.170821T1635Z-170822T0000Z/

MN
.    MINNESOTA COUNTIES INCLUDED ARE

COTTONWOOD           JACKSON             MURRAY
NOBLES               PIPESTONE           ROCK
$$

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 460
NWS STORM PREDICTION CENTER NORMAN OK
1135 AM CDT MON AUG 21 2017

SEVERE THUNDERSTORM WATCH 460 IS IN EFFECT UNTIL 700 PM CDT
FOR THE FOLLOWING LOCATIONS

IAC021-035-041-059-093-119-133-141-143-149-167-193-220000-
/O.NEW.KWNS.SV.A.0460.170821T1635Z-170822T0000Z/

IA
.    IOWA COUNTIES INCLUDED ARE

BUENA VISTA          CHEROKEE            CLAY
DICKINSON            IDA                 LYON
MONONA               O`BRIEN             OSCEOLA
PLYMOUTH             SIOUX               WOODBURY
$$

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 460
NWS STORM PREDICTION CENTER NORMAN OK
1135 AM CDT MON AUG 21 2017

SEVERE THUNDERSTORM WATCH 460 IS IN EFFECT UNTIL 700 PM CDT
FOR THE FOLLOWING LOCATIONS

SDC009-027-061-067-079-083-087-097-099-101-125-127-135-220000-
/O.NEW.KWNS.SV.A.0460.170821T1635Z-170822T0000Z/

SD
.    SOUTH DAKOTA COUNTIES INCLUDED ARE

BON HOMME            CLAY                HANSON
HUTCHINSON           LAKE                LINCOLN
MCCOOK               MINER               MINNEHAHA
MOODY                TURNER              UNION
YANKTON
$$


ATTN...WFO...FSD...OAX...LBF...


Special Weather Statement


Special Weather Statement
National Weather Service Des Moines IA
1123 AM CDT MON AUG 21 2017

IAZ005-015-023-024-035-211715-
Humboldt IA-Palo Alto IA-Kossuth IA-Webster IA-Pocahontas IA-
1123 AM CDT MON AUG 21 2017

...Thunderstorms with Hail over Northwest Iowa...

At 1121 AM CDT, local law enforcement in Pocahontas County reported
a strong thunderstorm with dime sized hail 7 miles northeast of
Pocahontas, moving northeast at 40 mph. Other storms were also
farther west of Pocahontas moving toward Havelock.

Up to nickel size hail will be possible with these storms.

Locations impacted include...
Algona, Pocahontas, Dakota City, Humboldt, Laurens, West Bend, Fonda,
Rolfe, Gilmore City, Wesley, Livermore, Corwith, Bode, Mallard, Lu
Verne, Renwick, Thor, Palmer, Havelock and Rutland.

LAT...LON 4314 9397 4264 9397 4256 9491 4292 9492
TIME...MOT...LOC 1621Z 243DEG 36KT 4279 9454

$$

Small


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Grand Forks ND
611 AM CDT Mon Aug 21 2017

MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024-
026>030-038-039-049-052>054-221115-
West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods-
West Marshall-East Marshall-North Beltrami-Pennington-Red Lake-
East Polk-North Clearwater-South Beltrami-Mahnomen-
South Clearwater-Hubbard-West Becker-East Becker-Wilkin-
West Otter Tail-East Otter Tail-Wadena-Grant-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh County-Eddy-Nelson-
Grand Forks-Griggs-Steele-Traill-Barnes-Cass-Ransom-Sargent-
Richland-Western Walsh County-
611 AM CDT Mon Aug 21 2017

This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected this afternoon and evening
over parts of eastern ND and in the southern Red River Valley
south of I-94. Severe weather is not expected at this time.

Also a cold front will move southeast out of Canada this
afternoon and evening. Winds may gust up to 35 mph with the cold
frontal passage.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

JH

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
529 AM CDT Mon Aug 21 2017

IAZ001>003-012>014-020>022-031-032-MNZ089-090-NEZ013-014-SDZ067-
070-071-221030-
Lyon IA-Osceola-Dickinson-Sioux-O`Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Nobles-Jackson-Dixon-Dakota-Lincoln SD-
Clay SD-Union-
529 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska, and
southeast South Dakota.

.DAY ONE...Today and Tonight
After early day thunderstorms with areas of diminish, additional
storms are likely to develop and spread into the area during the
mid to late afternoon. Storms could produce hail up to 2 inches in
diameter and winds up to 70 mph. An isolated tornado is also
possible. Heavy rain and flash flooding will also be a concern
later afternoon into early evening, especially for areas of
northwest Iowa south of Highway 3 which received heavy rainfall on
Sunday night.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely between 3 pm and 9 pm.

$$

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
529 AM CDT Mon Aug 21 2017

MNZ071-072-080-081-097-098-SDZ040-050-054>056-058>066-068-069-
221030-
Lincoln MN-Lyon MN-Murray-Cottonwood-Pipestone-Rock-Brookings-
Gregory-Miner-Lake-Moody-Aurora-Davison-Hanson-McCook-Minnehaha-
Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton-
529 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of southwest
Minnesota, east central South Dakota, south central South Dakota,
and southeast South Dakota.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected to develop across the area
during the early to mid afternoon, moving out of the area by early
evening. Severe storms are possible, with hail to golf ball size
and winds to 65 mph the primary threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be possible between 1 pm and 7 pm.

$$

Hazardous Weather Outlook
National Weather Service La Crosse WI
500 AM CDT Mon Aug 21 2017

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-221100-
Mitchell-Howard-Winneshiek-Allamakee-Floyd-Chickasaw-Fayette-
Clayton-Wabasha-Dodge-Olmsted-Winona-Mower-Fillmore-Houston-
Taylor-Clark-Buffalo-Trempealeau-Jackson-La Crosse-Monroe-Juneau-
Adams-Vernon-Crawford-Richland-Grant-
500 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of southeast
Minnesota...northeast Iowa and southwest into central Wisconsin.

.DAY ONE...Today and Tonight

Scattered storms will move through the area this morning. The main
threat with these storms will be lightning. The stronger storms
may produce small hail and locally heavy rain.

Another round of storms will move through the area from mid
afternoon through early overnight. A few of these storms may
become severe between 3 PM and 10 PM. While the entire area will
have the potential of seeing severe weather, the greatest threat
will be south of Interstate 90. The main severe weather threat
will be damaging winds with a lesser threat for large hail and
isolated tornadoes. In addition to this, there will be periods of
heavy rain.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There will be a chance of storms from Friday night into Sunday. It
is too early discern whether any of these storms will become
severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation could be needed from mid afternoon into the
evening.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

$$

Boyne

Hazardous Weather Outlook
National Weather Service Aberdeen SD
458 AM CDT Mon Aug 21 2017

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-221000-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-
Roberts-Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-
Codington-Grant-Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-
Lyman-Buffalo-
458 AM CDT Mon Aug 21 2017 /358 AM MDT Mon Aug 21 2017/

This Hazardous Weather Outlook is for portions of west central
Minnesota, central South Dakota, north central South Dakota, and
northeast South Dakota.

.DAY ONE...Today and Tonight

An area of showers and thunderstorms early this morning over
central South Dakota with push east through late morning. A few
storms could be strong to severe, with large hail possible.
Otherwise, additional thunderstorm development is possible today,
but the overall areal coverage is expected to diminish, with only
a low threat for severe storms.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$
TMT

Hazardous Weather Outlook
National Weather Service Duluth MN
412 AM CDT Mon Aug 21 2017

MNZ034-036>038-WIZ001>004-006>009-221030-
Crow Wing-South Aitkin-Carlton/South St. Louis-Pine-Douglas-
Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
412 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...Today and Tonight

Thunderstorms are possible this afternoon and tonight south of a
line from south of the Brainerd Lakes to Wrenshall to Bayfield.
Occasional lightning is expected. Brief downpours and gusty winds
may accompany some of the stronger storms.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There are a few chances of isolated to scattered thunderstorms
this week into next weekend. It is too early to characterize the
risk of severe weather, but all storms will be capable of
occasional cloud-to-ground lightning.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotter activation is not anticipated today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Duluth MN
412 AM CDT Mon Aug 21 2017

LSZ121-140>148-221030-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
412 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of the Nearshore
waters of western Lake Superior.

.DAY ONE...Today and Tonight

Isolated thunderstorms are possible along the South Shore.
Occasional cloud-to-water lightning is the main threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

There are periodic chances of thunderstorms this weekend into
next weekend. It is too early to characterize the risk of severe
weather, but all storms will be capable of occasional cloud-to-
water lightning.

$$

GSF/Huyck

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

Hazardous Weather Outlook
National Weather Service Des Moines IA
403 AM CDT Mon Aug 21 2017

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-220915-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
403 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Periods of thunderstorms will occur today and tonight. There is a
marginal risk for hail and strong wind with the storms this
morning, along with heavy rainfall that could lead to localized
flooding.

There is a slight risk for severe storms late this afternoon and
tonight. All modes of severe weather is possible along with heavy
rainfall which could lead to localized flooding. Very large hail
is possible across much of central Iowa especially north of
Interstate 80 and west of Interstate 35. Damaging wind and a few
tornadoes are possible across all of central Iowa.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

$$

FAB

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
359 AM CDT Mon Aug 21 2017

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
220900-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
359 AM CDT Mon Aug 21 2017

This Hazardous Weather Outlook is for portions of central and
southern Minnesota...and west central Wisconsin.

.DAY ONE...Today and Tonight

Scattered thunderstorms are expected today into this evening across
central and south central Minnesota and west central Wisconsin.
A few of these storms could produce severe weather, primarily
over southern Minnesota. Damaging winds, large hail and heavy
rainfall are the primary threats.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Thunderstorms are expected periodically from Friday night through
Sunday. Although predictability regarding timing and location is
low at this time, severe weather appears possible over the
weekend.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will may be needed over southern
Minnesota today into this evening.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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