Alert archive / Illinois / Frost Advisories in 2009

Frost Advisory 2, NWS Chicago, IL

September 29, 2009Lee County, Ogle County, Winnebago County, Illinois

NWS Chicago, IL issued this frost advisory at Sep 29, 2009, 3:26 PM CDT for Lee County, Ogle County, Winnebago County, Illinois. It took effect at Sep 30, 2009, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Sep 29, 2009, 3:26 PM CDT (20:26 UTC)
In effect from: Sep 30, 2009, 1:00 AM CDT
Expired: Sep 30, 2009, 8:00 AM CDT
In force: 7 hr
Issued by: NWS Chicago, IL

Counties Lee County, IL, Ogle County, IL, Winnebago County, IL

The radar

The Chicago radar (KLOT), 109 km from the middle of the area, began a volume at 20:28 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 frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

Hazardous weather outlook, Sep 28, 4:43 PM CDT, 22 hours 43 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
Sep 29, 4:14 AM CDT	Small Craft Advisory	LOT		39 hr

Nearby

Frost Advisories in Illinois, 2009 Every frost advisory in 2009

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.