National Weather Service United States Department of Commerce

Flash flooding possible for parts of Upper Midwest

A slow-moving weather system progressing from the northern Plains to the Great Lakes will bring excessive rainfall and a risk of flash flooding to portions of the Upper Midwest on Friday. The heaviest rainfall is expected from central Iowa northeastward across southeastern Minn. and into Wisc. Rainfall totals of 1-2 inches, with locally-higher amounts, are possible through Saturday morning.
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Hazardous Weather Conditions

7NM NE Chicago IL

Marine Point Forecast [NOTICE]

This
Afternoon

Chance Thunderstorms

SSE 10kt
2ft

High: 82 °F
Water: 52 °F

Tonight

Thunderstorms Likely

S 15kt
1ft

Low: 73 °F

Saturday

Chance Thunderstorms

SSW 15kt
< 1ft

High: 80 °F

Saturday
Night

Slight Chc Thunderstorms

WSW 10kt
< 1ft

Low: 70 °F

Sunday

Mostly Sunny

Light Wind
< 1ft

High: 79 °F

Sunday
Night

Slight Chc Thunderstorms

S 10kt
< 1ft

Low: 71 °F

Labor
Day

Thunderstorms Likely

SW 15kt
< 1ft

High: 78 °F

Monday
Night

Chance Thunderstorms

SW 15kt
< 1ft

Low: 70 °F

Tuesday

Chance Thunderstorms

SW 10kt
< 1ft

High: 81 °F

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:02 pm CDT Aug 29, 2014
Forecast Valid: 4pm CDT Aug 29, 2014-6pm CDT Sep 4, 2014

View Nearby Observations

Detailed Forecast

WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS...WHICH IS THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES WHICH WILL OCCASIONALLY BE ENCOUNTERED.

  • This Afternoon SSE wind around 10 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Waves around 2 ft.
  • Tonight S wind 10 to 15 kt. Showers and thunderstorms likely, mainly after 2am. Waves around 1 ft.
  • Saturday SSW wind around 15 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
  • Saturday Night WSW wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers and thunderstorms before 10pm. Waves 1 ft or less.
  • Sunday Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.
  • Sunday Night S wind 5 to 10 kt, with gusts as high as 15 kt. A slight chance of showers and thunderstorms after 1am. Waves 1 ft or less.
  • Labor Day SW wind around 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely, mainly after 1pm. Waves 1 ft or less.
  • Monday Night SW wind 10 to 15 kt. A chance of showers and thunderstorms. Waves 1 ft or less.
  • Tuesday W wind 5 to 10 kt becoming SW in the afternoon. A chance of showers and thunderstorms. Waves 1 ft or less.
*Notices:
  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.