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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Des Moines IA
456 AM CDT Thu Sep 21 2017

IAZ004>007-015>017-024>028-039-221000-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Humboldt-Wright-Franklin-Butler-Bremer-Black Hawk-
456 AM CDT Thu Sep 21 2017

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A few isolated non-severe storms are possible this afternoon and
early evening.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The combination of heat and humidity will push heat index values
into the 90s both Friday and Saturday. A few locations may
approach 100 degree heat index values on Friday as well.

Widespread showers and thunderstorms are expected to arrive over
central Iowa later Sunday into Monday lasting through much of
Tuesday. It is too early to determine the severe weather threat
this weekend into early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Ansorge

Hazardous Weather Outlook
National Weather Service Des Moines IA
456 AM CDT Thu Sep 21 2017

IAZ061-062-070>075-081>086-092>097-221000-
Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-
Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
456 AM CDT Thu Sep 21 2017

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Isolated to scattered thunderstorms will gradually end this
morning. Localized heavy rain will be possible and a few storms
may produce hail.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The combination of heat and humidity will push heat index values
into the 90s both Friday and Saturday. A few locations may
approach 100 degree heat index values on Friday as well.

Widespread showers and thunderstorms are expected to arrive over
central Iowa later Sunday into Monday lasting through much of
Tuesday. It is too early to determine the severe weather threat
this weekend into early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter reports of severe weather, rainfall, or flooding would be
appreciated.

$$

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
558 AM CDT Thu Sep 21 2017

IAZ001>003-012>014-020>022-031-032-MNZ080-081-089-090-098-NEZ013-
014-SDZ067-070-071-221100-
Lyon IA-Osceola-Dickinson-Sioux-O`Brien-Clay IA-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Murray-Cottonwood-Nobles-Jackson-Rock-
Dixon-Dakota-Lincoln SD-Clay SD-Union-
558 AM CDT Thu Sep 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

No hazardous weather is expected today and tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorm risks will return by late Friday and continue at
times into early next week. At this time, while a widespread
severe weather risk is unlikely, an isolated strong to severe
storms appears possible Saturday or Sunday, depending on where
the boundary sets up. In addition, some areas of heavy rainfall
are likely, along with a risk for significant ponding or flash
flooding, especially near and west of a Windom to Sioux City line.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
517 AM CDT Thu Sep 21 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-221000-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
517 AM CDT Thu Sep 21 2017

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms will linger south of interstate 80 through
mid morning before they diminish. A few storms may still be able
to produce heavy rain and flash flooding. Frequent cloud to
ground lightning will also be a threat until the storms end.

After the clouds and rain end, increasing heat and humidity will
produce afternoon heat index readings in the middle to upper 90s
across portions of east central and southeast Iowa, northeast
Missouri, and west central Illinois.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Unseasonably warm temperatures and high humidity will combine to
produce heat index readings in the low to mid 90s Friday, and in
the lower 90s for Saturday afternoon.

Thunderstorm chances return to the Outlook Area from late Monday
into Tuesday. It is too early to determine if there will be any
severe weather threat early next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated today and tonight, but
reports of any flooding from last evening though this morning
would be appreciated.

$$

12

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
509 AM CDT Thu Sep 21 2017

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-221015-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
509 AM CDT Thu Sep 21 2017

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Heat indices across the area will be in the middle to upper 90s on
Thursday afternoon. Proper precautions should be taken to remain well
hydrated and cool.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

 Heat indices will again reside in the middle to upper 90s on Friday.
Saturday will be slightly cooler with heat indices in the lower to
middle 90s.

Next chance for thunderstorms will come early next week. Widespread
severe weather is not anticipated at this time.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

$$

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
429 AM CDT Thu Sep 21 2017

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
220930-
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-
429 AM CDT Thu Sep 21 2017

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

.DAY ONE...Today and Tonight

Isolated thunderstorms will be possible this afternoon, with a
better chance for thunderstorms expected for tonight across
central Minnesota into western Wisconsin. Isolated instances of
large hail will be possible with this activity.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Periodic chances for thunderstorms exist from Friday through
Monday night. Some severe storms are possible Friday evening in
western MN. Repeated rounds of thunderstorms this weekend in
western Minnesota will also lead to an increased risk for
flooding.

Hot and humid conditions are expected Friday with peak afternoon
heat indices between 95 and 100 expected. Hot and humid conditions
with heat indices into the mid 90s are expected again Saturday
from southeast Minnesota into western Wisconsin. Heat illnesses
may occur, primarily for those who are active outdoors.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
415 AM CDT Thu Sep 21 2017

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-212315-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
415 AM CDT Thu Sep 21 2017

This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.

.DAY ONE...Today and Tonight

Isolated thunderstorms are possible early this morning across far
southeast Nebraska and southwest Iowa.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Heavy rainfall is possible from Saturday through Tuesday as a slow
moving cold front tracks across the area. Occasional thunderstorms
are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Fobert

Hazardous Weather Outlook
National Weather Service La Crosse WI
406 AM CDT Thu Sep 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-
406 AM CDT Thu Sep 21 2017

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

.DAY ONE...Today and Tonight

Isolated thunderstorms are possible this afternoon and tonight.
Severe weather is not expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are possible from late Sunday night through
Tuesday. It is too early to discern if there would be a severe
threat.

.SPOTTER INFORMATION STATEMENT...

No action needed.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

$$

Boyne/Rieck

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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