Alert archive / Illinois / Red Flag Warnings in 2018

Red Flag Warning 1, NWS Chicago, IL

April 29, 201816 counties in Illinois

NWS Chicago, IL issued this red flag warning at Apr 29, 2018, 8:55 PM CDT for 16 counties in Illinois. It took effect at Apr 30, 2018, 12:00 PM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 29, 2018, 8:55 PM CDT (01:55 UTC)
In effect from: Apr 30, 2018, 12:00 PM CDT
Expired: Apr 30, 2018, 8:00 PM CDT
In force: 8 hr
Issued by: NWS Chicago, IL

Counties Boone County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Will County, IL, Winnebago County, IL

The radar

The Chicago radar (KLOT), 39 km from the middle of the area, began a volume at 01:53 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this red flag warning went out at Apr 29, 8:51 PM CDT, 4 minutes earlier.

Area forecast discussion, Apr 29, 8:51 PM CDT, 4 minutes before

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Hazardous weather outlook, Apr 29, 3:22 PM CDT, 5 hours 33 minutes before

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 9:09 AM CDT	Small Craft Advisory	LOT		12 hr
Apr 30, 4:35 PM CDT	Red Flag Warning	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	26 hr

Nearby

Red Flag Warnings in Illinois, 2018 Every red flag warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.