Alert archive / Illinois / High Wind Warnings in 2019

High Wind Warning 1, NWS Chicago, IL

February 23, 201916 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this high wind warning at Feb 23, 2019, 2:07 PM CST for 16 counties in Illinois; 5 counties in Indiana. It took effect at Feb 24, 2019, 3:00 AM CST. It was in force for 18 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: Feb 23, 2019, 2:07 PM CST (20:07 UTC)
In effect from: Feb 24, 2019, 3:00 AM CST
Expired: Feb 24, 2019, 9:00 PM CST
In force: 18 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 20:06 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, 8.1 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: 461 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 280 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 high wind 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 high wind warning went out at Feb 23, 12:23 PM CST, 1 hour 44 minutes earlier.

Area forecast discussion, Feb 23, 12:23 PM CST, 1 hour 44 minutes before

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Hazardous weather outlook, Feb 23, 3:48 AM CST, 10 hours 19 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
Feb 22, 7:40 PM CST	River Flood Advisory	LOT	Lee	13 hr
Feb 23, 3:40 AM CST	Gale Warning	LOT		28 hr
Feb 23, 8:59 AM CST	River Flood Warning	LOT	Lee	21 days
Feb 23, 9:14 AM CST	Areal Flood Advisory	LOT	Boone, DeKalb, Lee, McHenry, Ogle, Winnebago	6 hr
Feb 23, 3:07 PM CST	Gale Warning	LOT		36 hr
Feb 23, 3:07 PM CST	Storm Warning	LOT		31 hr
Feb 23, 4:25 PM CST	Marine Dense Fog Advisory	LOT		9 hr

Nearby

High Wind Warnings in Illinois, 2019 High Wind Warnings in Indiana, 2019 Every high wind 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.