US National Weather Service Chicago Illinois

US National Weather Service Chicago Illinois Official page for the National Weather Service Chicago. Details: weather.gov/facebook
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NWS will be using Facebook as a supplemental channel to disseminate environmental information and promote weather awareness activities including outreach and educational efforts.

06/10/2026

[Posted: 9:45 AM Wednesday June 10th, 2026]

Due to the severe weather that is expected in the area today and again tomorrow, we will be postponing the routine weekly NOAA Weather Radio test until Friday, June 12th at 11 AM CDT

The next 48 hours look stormy across our area. Here are our current thoughts:There may be multiple waves of storms acros...
06/10/2026

The next 48 hours look stormy across our area. Here are our current thoughts:

There may be multiple waves of storms across our area today. The first wave (largely in the 2 to 7 PM time window) has the highest threat to be severe with damaging to locally destructive winds. While additional storms are expected after 7 PM, coverage of severe intensity (in the form of damaging winds) may be lower compared to earlier in the day.

We are expecting a lull in storms after about midnight tonight.

Tomorrow will feature additional rounds of severe thunderstorms in our area. The period of greatest concern will be during the afternoon and evening (roughly 3 to 9 PM) when intense thunderstorms capable of producing tornadoes, damaging hail, damaging winds, and flash flooding may sweep across the area.

Now is the time to get prepared! Ensure you have multiple ways to get warning information and know where to shelter if a Tornado Warning is issued for your area. As always, we'll provide updates as the forecast evolves.

With the potential for multiple rounds of severe thunderstorms in the forecast Wednesday through Thursday, now is the ti...
06/10/2026

With the potential for multiple rounds of severe thunderstorms in the forecast Wednesday through Thursday, now is the time to plan for what you would do if a warning is issued for your location, whether at home, on the road, or at work. Visit
weather.gov/chicago/severeprepare for more severe weather preparedness and safety information.

The very warm and humid pattern will continue through Thursday including the potential for strong to severe thunderstorm...
06/09/2026

The very warm and humid pattern will continue through Thursday including the potential for strong to severe thunderstorms and localized flooding. A break in the active weather is on the horizon toward the end of the week.

A weak disturbance is moving through central Illinois. Isolated to scattered showers and storms are possible this aftern...
06/09/2026

A weak disturbance is moving through central Illinois. Isolated to scattered showers and storms are possible this afternoon south of Interstate 80. Main hazards are lightning, and localized downpours and gusty winds.

The pattern is heating up! Today, Wednesday, and Thursday will be hot and humid with peak heat index values in the upper...
06/09/2026

The pattern is heating up! Today, Wednesday, and Thursday will be hot and humid with peak heat index values in the upper 90s to locally 100. This will be the stickiest air of the year so far this season, so be sure to practice heat safety tips (visit https://www.weather.gov/safety/heat)

With heat and humidity comes the threat for severe storms. There will be multiple windows for severe weather starting late tonight and lasting through Thursday. At this point, the highest coverage and intensity of storms are favored on Thursday. This will be a week to stay weather aware and have multiple ways to get warning information.

The graphics below provide additional details on our forecast.

[11:47 PM CDT Monday 6/8/2026]Flash Flood Warning in effect until 2:45 AM CDT for the portion of Lake County Indiana sha...
06/09/2026

[11:47 PM CDT Monday 6/8/2026]

Flash Flood Warning in effect until 2:45 AM CDT for the portion of Lake County Indiana shaded in red.

Avoid walking or driving through flood waters! Turn Around, Don't Drown! Avoid non-urgent travel in the warned area until the heavy rain ends.

[11:29 PM CDT Monday 6/8/2026]We just issued a Flood Advisory (light green shading on the map) parts of southeastern Wil...
06/09/2026

[11:29 PM CDT Monday 6/8/2026]

We just issued a Flood Advisory (light green shading on the map) parts of southeastern Will, northeastern Kankakee, Lake (IN), and northwestern Porter counties for an area of very heavy rain.

The area of greatest concern is across northern Lake county, particularly near a line from Schererville to Gary, as this area can be prone to flooding with intense rain rates.

Use caution if traveling through the affected areas - do not attempt to drive across flooded roads.

Hot and humid conditions are expected through Thursday. The pattern will also be favorable for several rounds of severe ...
06/08/2026

Hot and humid conditions are expected through Thursday. The pattern will also be favorable for several rounds of severe thunderstorms. Thursday looks to be the day of greatest concern locally. Review heat safety tips at https://www.weather.gov/safety/heat and stay up to date on the forecast!

The very warm and humid pattern will continue through Thursday. There’s a localized flooding threat Tuesday night throug...
06/08/2026

The very warm and humid pattern will continue through Thursday. There’s a localized flooding threat Tuesday night through Thursday, some of the storms may be strong to severe, especially Thursday afternoon into Thursday evening. Stay tuned for the latest updates!

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