Chicago, IL

Weather Forecast Office

Winter Weather Liaison

National Radar Loop

Local Radar Loop

Potential for at least 2 inches of snow

Potential for at least 4 inches of snow

Potential for at least 6 inches of snow

Potential for at least 0.10 inches of ice

Potential for at least 0.25 inches of ice

Potential for at least 0.50 inches of ice

Expected Snow Forecast

Expected Ice Forecast

Graphicast

Weather Story Graphic Tab 3

Weather Story Graphic Tab 4

Weather Story Graphic Tab 5

Regional Radar Loop

Local Radar Loop

Graphical Nowcast

Local Watches, Advisories, and Warnings

National Watches and Warnings

Weather Story

Winter Storm Severity Index (Local Area)

Winter Storm Severity Index (USA)

Winter Storm Severity Index General Information

Prototype IDSS Point Forecasts Page

6-10 Day Temperature Outlook

6-10 Day Precipitation Outlook

3-7 Day Hazards Outlook

8-14 Day Temperature Outlook

8-14 Day Precipitation Outlook

8-14 Day Hazards Outlook

Day 1 Non-thunderstorm Wind Risk

NWS Chicago, IL Experimental Winter Weather Liaison Webpage

This page will auto-update every 15 minutes.

If you notice old data, try reloading the page while ignoring caching by hitting Shift + F5 on a PC, or Shift + Command + R on a Mac.

Back to NWS Chicago, IL Main Page

Snowfall Reports
0-36 Hours
Days 1.5-4
Days 4-7+
Planning & Resources

Snowfall Observations

Observed Snowfall Analysis

Based on reports over the past 12 hours

Snowfall Analysis

Color-Coded Local and National Snow Report Map

Public Information Statement Issued: 05/01/2025 08:28:18 PM UTC

6-hour Snowfall and Snow Depth Reports (O'Hare, Rockford, and NWS Chicago)

0-36 Hours

National, Regional, and Local Radar Loops

National Interactive Map | Regional Interactive Map

No warnings displayed on this national loop.

Local Controllable Loop | Local Interactive Map

West | North | South

Hourly Precipitation Graphs

Click on a location for hourly precipitation plot. Click the plot to clear the display.

These images will update around: 3:30 AM, 11:00 AM, 3:30 PM, 6:00 PM, and 9:30 PM.

Detailed Hourly Forecasts

Interactive Detailed Forecast Webpage

Graphical Messaging Information

Enhanced Hazardous Weather Outlook

Click an individual hazard block below for more information

Threat Level Key	None	Limited	Elevated	Significant	Extreme
Threat Level Key

Link to Weather Story Matrix

DSS Packet

Snow and Ice Forecasts

Snow Accumulation

Please be sure to check the "Valid" time range at the top of each image, as well as the last update time at the bottom.

Expected Snowfall Forecast

This image will update around 3:35 AM/PM, and additionally as needed.

Snow Exceedance Probabilities

These images will update around 3:45 AM/PM

>= 2"	>= 4"	>= 6"

Potential for at least a Trace of snow (link) Potential for at least 1 Inch of snow (link) Potential for at least 8 Inches of snow (link)

Ice Accumulation
Please be sure to check the "Valid" time range at the top of each image, as well as the last update time at the bottom.

Expected Ice Accumulation Forecast

This image will update around 3:35 AM/PM, and additionally as needed.

Ice Exceedance Probabilities

>= 0.1"	>= 0.25"	>= 0.5"

Potential for at least a 0.01" of ice (link)

Detailed Forecasts (Legacy Point and Click Page)

Current Conditions and
Seven Day Forecast

-- OR --

Hourly Weather Graph
(click on your location on the map)

NWS Chicago Watch/Warning/Advisory Criteria

Days 1.5 - 4

Enhanced Hazardous Weather Outlook

Click an individual hazard block below for more information.

Threat Level Key	None	Limited	Elevated	Significant	Extreme
Threat Level Key

Link to Weather Story Matrix

DSS Packet

Weather Prediction Center Outlook Products Graphics will update at approximately: 4 AM | 8 AM | 2 PM | 4 PM | 8 PM CST

WSSI Outlook (USA)

WSSI Outlook (Local Area)

WSSI User's Guide

Detailed Hourly Forecasts

Interactive Detailed Forecast Webpage

Detailed Forecasts (Legacy Point and Click Page)

Current Conditions and
Seven Day Forecast

-- OR --

Hourly Weather Graph
(click on your location on the map)

NWS Chicago Watch/Warning/Advisory Criteria

Days 4 - 7+

Enhanced Hazardous Weather Outlook

Click an individual hazard block below for more information.

Threat Level Key	None	Limited	Elevated	Significant	Extreme
Threat Level Key

CPC and WPC Outlooks 3-10 Day Outlooks

6-10 Day Temperature Outlook

6-10 Day Precipitation Outlook

Day 3-7 Hazards Outlook

Extended Outlooks

8-14 Day Temperature Outlook

8-14 Day Precipitation Outlook

Day 8-14 Hazards Outlook

Detailed Forecasts (Legacy Point and Click Page)

Current Conditions and
Seven Day Forecast

-- OR --

Hourly Weather Graph
(click on your location on the map)

NWS Chicago Watch/Warning/Advisory Criteria

Winter Weather Watcher Training

Winter Weather Watching Tools

Winter Weather Preparedness

Severe Weather & Flooding		Winter Weather		Visibility Restrictions
	Tornado Warning		Blizzard Warning		Dense Fog Advisory
	Severe Thunderstorm Warning		Winter Storm Warning		Dense Smoke Advisory
	Flash Flood Warning		Ice Storm Warning		Dust Storm Warning
	Severe Weather Statement		Wind Chill Warning		Blowing Dust Advisory
	Flash Flood Statement		Winter Storm Watch
	Tornado Watch		Wind Chill Watch	Fire Weather
	Severe Thunderstorm Watch		Winter Weather Advisory		Red Flag Warning
	Flood Watch		Wind Chill Advisory		Fire Weather Watch
	Flood Warning		Freezing Fog Advisory
	Flood Statement		Freeze Warning	Miscellaneous
	Hydrologic Outlook		Freeze Watch		Hazardous Weather Outlook
			Frost Advisory		Special Weather Statement
Wind					Air Quality Alert
	High Wind Warning	Heat			Civil Danger Warning
	High Wind Watch		Excessive Heat Warning		Civil Emergency Message
	Wind Advisory		Excessive Heat Watch		911 Telephone Outage
			Heat Advisory		Child Abduction Emergency

Severe Weather & Flooding		Winter Weather		Visibility Restrictions
	Tornado Warning		Blizzard Warning		Dense Fog Advisory
	Severe Thunderstorm Warning		Winter Storm Warning		Dense Smoke Advisory
	Flash Flood Warning		Ice Storm Warning		Dust Storm Warning
	Severe Weather Statement		Wind Chill Warning		Blowing Dust Advisory
	Flash Flood Statement		Winter Storm Watch
	Tornado Watch		Wind Chill Watch	Fire Weather
	Severe Thunderstorm Watch		Winter Weather Advisory		Red Flag Warning
	Flood Watch		Wind Chill Advisory		Fire Weather Watch
	Flood Warning		Freezing Fog Advisory
	Flood Statement		Freeze Warning	Miscellaneous
	Hydrologic Outlook		Freeze Watch		Hazardous Weather Outlook
			Frost Advisory		Special Weather Statement
Wind					Air Quality Alert
	High Wind Warning	Heat			Civil Danger Warning
	High Wind Watch		Excessive Heat Warning		Civil Emergency Message
	Wind Advisory		Excessive Heat Watch		911 Telephone Outage
			Heat Advisory		Child Abduction Emergency

Severe Weather & Flooding		Winter Weather		Visibility Restrictions
	Tornado Warning		Blizzard Warning		Dense Fog Advisory
	Severe Thunderstorm Warning		Winter Storm Warning		Dense Smoke Advisory
	Flash Flood Warning		Ice Storm Warning		Dust Storm Warning
	Severe Weather Statement		Wind Chill Warning		Blowing Dust Advisory
	Flash Flood Statement		Winter Storm Watch
	Tornado Watch		Wind Chill Watch	Fire Weather
	Severe Thunderstorm Watch		Winter Weather Advisory		Red Flag Warning
	Flood Watch		Wind Chill Advisory		Fire Weather Watch
	Flood Warning		Freezing Fog Advisory
	Flood Statement		Freeze Warning	Miscellaneous
	Hydrologic Outlook		Freeze Watch		Hazardous Weather Outlook
			Frost Advisory		Special Weather Statement
Wind					Air Quality Alert
	High Wind Warning	Heat			Civil Danger Warning
	High Wind Watch		Excessive Heat Warning		Civil Emergency Message
	Wind Advisory		Excessive Heat Watch		911 Telephone Outage
			Heat Advisory		Child Abduction Emergency