Williamson County, IL Weather Alerts

Every National Weather Service alert issued for Williamson County, Illinois, pushed to your phone within moments — county code ILC199, forecast zone ILZ085. Free with StormCast.

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How the NWS identifies Williamson County

These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches ILC199 directly rather than matching on place names, which is why an alert arrives whether you are in Cambria or anywhere else in the county.

NWS County Code

ILC199

Forecast Zone

ILZ085

Forecast Office

West Paducah (PAH)

Radar Station

KPAH

Towns covered in Williamson County

An NWS alert for Williamson County applies to all 11 of these communities. You do not need a separate alert for each one.

Cambria Carterville Colp Creal Springs Energy Freeman Spur Herrin Hurst Johnston City Marion Pittsburg

River gauges in and around Williamson County

StormCast tracks 4 gauges near Williamson County. Set a flood-stage alert on any of them to get notified before the water reaches you.

All Illinois river gauges →

Current conditions

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Alert types issued for Williamson County

Tornado

Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.

How tornado alerts work →

Flooding

Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.

How flood alerts work →

Winter

Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.

Winter warnings explained →

Fire Weather

Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.

Fire weather alerts →

Heat & Cold

Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.

Frost & freeze alerts →

Wind & Lightning

High Wind Warning, Wind Advisory and lightning proximity alerts.

Lightning alerts →

Williamson County weather alert questions

Which NWS forecast zone is Williamson County in?

Williamson County, Illinois is NWS county code ILC199 and forecast zone ILZ085. Alerts for it are issued by the West Paducah (PAH) Weather Forecast Office, and the nearest NEXRAD radar is KPAH.

Which towns in Williamson County are covered?

All of them. NWS alerts are issued at the county and zone level, so a warning for Williamson County covers every community inside it, including Cambria, Carterville, Colp, Creal Springs, Energy, Freeman Spur, Herrin, Hurst, Johnston City, Marion and Pittsburg.

Are there river gauges in Williamson County?

Yes — StormCast monitors 4 river gauges in and around Williamson County, including Crab Orchard Creek above Marion, Crab Orchard Creek at Crab Orchard Lake near Marion 12W, Grassy Creek (IL) at Devils Kitchen Lake near Marion 11WSW. You can set a flood-stage alert on any of them and get a push notification when the water rises.

How fast are alerts for Williamson County delivered?

StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for ILC199, the push notification goes out within moments — even with your screen off.

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