Alert archive / Illinois / Freezing Rain Advisories in 2007

Freezing Rain Advisory 5, NWS Lincoln, IL

December 9, 200711 counties in Illinois

NWS Lincoln, IL issued this freezing rain advisory at Dec 9, 2007, 3:26 PM CST for 11 counties in Illinois. It took effect at Dec 9, 2007, 9:00 PM CST. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2007, 3:26 PM CST (21:26 UTC)
In effect from: Dec 9, 2007, 9:00 PM CST
Expired: Dec 10, 2007, 3:39 AM CST
In force: 7 hr
Issued by: NWS Lincoln, IL

Counties Christian County, IL, Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Jasper County, IL, Moultrie County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 122 km from the middle of the area, began a volume at 21:31 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.4 hours before the alert went out and 388 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 369 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Lincoln, IL wrote its last area forecast discussion before this freezing rain advisory went out at Dec 9, 3:00 PM CST, 26 minutes earlier.

Area forecast discussion, Dec 9, 3:00 PM CST, 26 minutes before

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Hazardous weather outlook, Dec 9, 11:33 AM CST, 3 hours 53 minutes before

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In the hours before

Local storm report, Dec 9, 1:13 PM CST, 2 hours 13 minutes before

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Local storm report, Dec 9, 1:38 PM CST, 1 hour 48 minutes before

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Local storm report, Dec 9, 1:38 PM CST, 1 hour 48 minutes before

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Local storm report, Dec 9, 1:45 PM CST, 1 hour 41 minutes before

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Local storm report, Dec 9, 1:50 PM CST, 1 hour 36 minutes before

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Local storm report, Dec 9, 2:47 PM CST, 39 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 9, 4:01 AM CST	Winter Storm Watch	ILX	Cass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more	24 hr

Nearby

Freezing Rain Advisories in Illinois, 2007 Every freezing rain advisory in 2007

Sources

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