Alert archive / Illinois / Wind Advisories in 2010

Wind Advisory 4, NWS Chicago, IL

October 26, 201016 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind advisory at Oct 26, 2010, 7:13 PM CDT for 16 counties in Illinois; 5 counties in Indiana. It took effect at Oct 27, 2010, 7:00 AM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Oct 26, 2010, 7:13 PM CDT (00:13 UTC)
In effect from: Oct 27, 2010, 7:00 AM CDT
Expired: Oct 27, 2010, 7:00 PM CDT
In force: 12 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 00:13 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, 0.2 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: 1843 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 173 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 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 advisory went out at Oct 26, 7:09 PM CDT, 4 minutes earlier.

Area forecast discussion, Oct 26, 7:09 PM CDT, 4 minutes before

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Hazardous weather outlook, Oct 26, 3:39 PM CDT, 3 hours 34 minutes before

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In the hours before

Local storm report, Oct 26, 1:57 PM CDT, 5 hours 16 minutes before

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Local storm report, Oct 26, 4:21 PM CDT, 2 hours 52 minutes before

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Local storm report, Oct 26, 5:40 PM CDT, 1 hour 33 minutes before

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Local storm report, Oct 26, 6:14 PM CDT, 59 minutes before

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Local storm report, Oct 26, 6:19 PM CDT, 54 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
Oct 27, 4:08 AM CDT	High Wind Warning	LOT	Boone, DeKalb, DuPage, Kane, Lake, Lee and 3 more	15 hr
Oct 27, 2:03 PM CDT	Red Flag Warning	LOT	Ford, Iroquois, Kankakee, Livingston, Will	5 hr

Nearby

Wind Advisories in Illinois, 2010 Wind Advisories in Indiana, 2010 Every wind advisory in 2010

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.