Alert archive / Illinois / Wind Chill Advisories in 2014

Wind Chill Advisory 3, NWS Chicago, IL

January 22, 201416 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind chill advisory at Jan 22, 2014, 3:47 AM CST for 16 counties in Illinois; 5 counties in Indiana. It took effect at Jan 22, 2014, 7:00 PM CST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued: Jan 22, 2014, 3:47 AM CST (09:47 UTC)
In effect from: Jan 22, 2014, 7:00 PM CST
Expired: Jan 23, 2014, 12:00 PM CST
In force: 17 hr
Issued by: NWS Chicago, IL

All 21 counties

Boone County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois 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, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 15 km from the middle of the area, began a volume at 09:44 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

Lincoln, IL (KILX), launched 00:00Z, 9.8 hours before the alert went out and 156 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1332 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 89 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 wind chill advisory 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 wind chill advisory went out at Jan 22, 3:40 AM CST, 7 minutes earlier.

Area forecast discussion, Jan 22, 3:40 AM CST, 7 minutes before

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Hazardous weather outlook, Jan 21, 4:09 PM CST, 11 hours 38 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
Jan 22, 3:20 AM CST	Gale Warning	LOT		36 hr
Jan 22, 3:20 AM CST	Small Craft Advisory	LOT		48 hr
Jan 22, 3:06 PM CST	Wind Chill Warning	LOT	Boone, DeKalb, Kane, Lee, McHenry, Ogle and 1 more	13 hr
Jan 22, 4:02 PM CST	Winter Weather Advisory	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	12 hr

Nearby

Wind Chill Advisories in Illinois, 2014 Wind Chill Advisories in Indiana, 2014 Every wind chill advisory in 2014

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.