Alert archive / Illinois / Wind Chill Warnings in 2019

Wind Chill Warning 1, NWS Chicago, IL

January 28, 201916 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind chill warning at Jan 28, 2019, 1:36 PM CST for 16 counties in Illinois; 5 counties in Indiana. It took effect at Jan 29, 2019, 6:00 PM CST. It was in force for 42 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: Jan 28, 2019, 1:36 PM CST (19:36 UTC)
In effect from: Jan 29, 2019, 6:00 PM CST
Expired: Jan 31, 2019, 12:00 PM CST
In force: 42 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 19:34 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 12:00Z, 7.6 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: 784 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 419 m²/s²
0-3 km storm-relative helicity: 439 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 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 wind chill warning went out at Jan 28, 12:19 PM CST, 1 hour 17 minutes earlier.

Area forecast discussion, Jan 28, 12:19 PM CST, 1 hour 17 minutes before

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Hazardous weather outlook, Jan 28, 5:14 AM CST, 8 hours 22 minutes before

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In the hours before

Local storm report, Jan 28, 7:37 AM CST, 5 hours 59 minutes before

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Local storm report, Jan 28, 8:04 AM CST, 5 hours 32 minutes before

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Local storm report, Jan 28, 10:46 AM CST, 2 hours 50 minutes before

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Local storm report, Jan 28, 11:42 AM CST, 1 hour 54 minutes before

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Local storm report, Jan 28, 12:14 PM CST, 1 hour 22 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 27, 8:10 PM CST	River Flood Warning	LOT	Winnebago	13 hr
Jan 28, 3:01 AM CST	Wind Chill Watch	LOT	Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more	11 hr
Jan 28, 1:36 PM CST	Wind Chill Advisory	LOT	Boone, DeKalb, DuPage, Grundy, Kane, Kankakee and 8 more	28 hr
Jan 28, 3:42 PM CST	River Flood Advisory	LOT	Winnebago	68 hr
Jan 28, 3:47 PM CST	River Flood Advisory	LOT	Ogle	7 days
Jan 28, 4:01 PM CST	Areal Flood Advisory	LOT	Kendall	43 hr
Jan 28, 4:09 PM CST	Gale Warning	LOT		41 hr
Jan 28, 4:09 PM CST	Small Craft Advisory	LOT		53 hr
Jan 28, 4:09 PM CST	Heavy Freezing Spray Warning	LOT		53 hr
Jan 27, 7:26 PM CST	River Flood Warning	LOT	Lake, Newton	21 days

Nearby

Wind Chill Warnings in Illinois, 2019 Wind Chill Warnings in Indiana, 2019 Every wind chill warning in 2019

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.