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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service La Crosse WI
352 AM CDT Thu Jul 20 2017

IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-
032>034-041>044-053>055-061-211200-
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-
352 AM CDT Thu Jul 20 2017

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

.DAY ONE...Today and Tonight

Thunderstorms are likely early this morning with continued
flooding across parts of southeast Minnesota and western
Wisconsin.

A few additional thunderstorms are possible this afternoon and
again overnight tonight mainly south of Interstate 94.

Heat indices may reach 95 to 100 across northeast Iowa into
southwest Wisconsin this afternoon.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are likely Friday into Friday night. Locally heavy
rainfall is expected, with damaging wind gusts and large hail
possible.

Flash flooding is possible in areas that receive repeated
thunderstorms. Rises on some area rivers and streams are expected,
with flooding along rivers where heavier rainfall occurs.

Scattered thunderstorms are possible Saturday into Saturday
evening. A few storms may be severe with locally heavy rainfall,
strong winds, and hail.

Heat indices may reach 95 to 100 across northeast Iowa into
southwest Wisconsin on Saturday afternoon.

Isolated thunderstorms are possible Sunday and again on Wednesday.
It is too early to discern any severe threats at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested Friday afternoon and evening.
Rainfall and flooding reports are appreciated.

.EMERGENCY MANAGEMENT COORDINATION...

No webinar is scheduled.

$$

JAM

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
349 AM CDT Thu Jul 20 2017

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
211300-
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-
349 AM CDT Thu Jul 20 2017

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

.DAY ONE...Today and Tonight

There is a chance of thunderstorms overnight tonight with a
marginal risk of severe weather, mainly south of the Minnesota
River Valley. Large hail and damaging wind gusts would be the
primary concern with any severe storms, along with locally heavy
rainfall.

Warm and humid conditions today will push heat indices into the
lower 90s over much of the area, particularly south of Interstate
94. Those working outdoors or involved in strenuous outdoor
activities should ensure they stay hydrated and take periodic
breaks.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are possible Friday and Saturday, with a slight risk
of severe storms across most of the area. Large hail and damaging
wind gusts are the primary expected hazards. Locally heavy
rainfall is also a concern, particularly south of Interstate 94.

Thunderstorm chances return for Tuesday into Wednesday, but
widespread severe weather is not anticipated.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed through tonight.

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
339 AM CDT Thu Jul 20 2017

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-210845-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and north of a line from Charlevoix MI to South
Fox Island 5 NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to
Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to
Mid Lake-
Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5 NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5 NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid
Lake-
Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
339 AM CDT Thu Jul 20 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...Today and Tonight.

Thunderstorms are likely this morning across the south with a
chance across the south this afternoon and tonight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Periods of thunderstorms are expected through Saturday and
again possible on Wednesday.

&&

$$

MTF

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Hydrologic Outlook


HYDROLOGIC OUTLOOK
IAC005-037-043-065-067-089-131-191-MNC039-045-055-099-109-157-169-
WIC001-011-019-023-043-053-057-063-081-103-119-121-123-202115-

HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE LA CROSSE WI
318 AM CDT Thu Jul 20 2017

... Additional Flooding Possible Friday Into Friday Night...

Another round of thunderstorms is likely to impact the area Friday
into Friday night. Given the very humid air in place, storms will
be capable of torrential downpours with rainfall rates up to 2
inches per hour possible. With some area rainfall totals exceeding
4 inches over the past few days, the flash flood risk will be
greatly increased for areas that receive additional heavy
rainfall from multiple thunderstorms. Some area rivers and
streams are already running high from rainfall so far this week,
and additional rainfall will lead to continued rises and possible
flooding on area rivers.

If you have outdoor plans, especially near streams and rivers that
are susceptible to rapid rises, be aware of the potential of
flooding over the next couple of days.

$$

JAM

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Page last modified: June 2, 2009
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