Alert archive / Illinois / Wind Advisories in 2009

Wind Advisory 5, NWS Chicago, IL

April 26, 20094 counties in Illinois; Benton County, Jasper County, Newton County, Indiana

NWS Chicago, IL issued this wind advisory at Apr 26, 2009, 2:17 PM CDT for 4 counties in Illinois; Benton County, Jasper County, Newton County, Indiana. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Apr 26, 2009, 2:17 PM CDT (19:17 UTC)
Expired: Apr 26, 2009, 6:56 PM CDT
In force: 5 hr
Issued by: NWS Chicago, IL

Counties Ford County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Benton County, IN, Jasper County, IN, Newton County, IN

The radar

The Chicago radar (KLOT), 88 km from the middle of the area, began a volume at 19:17 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, 7.3 hours before the alert went out and 106 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: 115 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1235 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 165 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 Apr 26, 1:03 PM CDT, 1 hour 14 minutes earlier.

Area forecast discussion, Apr 26, 1:03 PM CDT, 1 hour 14 minutes before

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Hazardous weather outlook, Apr 26, 11:04 AM CDT, 3 hours 13 minutes before

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In the hours before

Local storm report, Apr 26, 10:27 AM CDT, 3 hours 50 minutes before

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Local storm report, Apr 26, 12:22 PM CDT, 1 hour 55 minutes before

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Local storm report, Apr 26, 12:23 PM CDT, 1 hour 54 minutes before

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Local storm report, Apr 26, 1:04 PM CDT, 1 hour 13 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
Apr 25, 8:53 PM CDT	River Flood Warning	LOT	Lake	10 days
Apr 25, 8:53 PM CDT	River Flood Warning	LOT	Kane, Kendall	16 hr
Apr 25, 9:09 PM CDT	River Flood Advisory	LOT	Cook	15 hr
Apr 25, 9:09 PM CDT	River Flood Advisory	LOT	Ogle	46 hr
Apr 25, 10:17 PM CDT	Small Craft Advisory	LOT		3 days
Apr 26, 5:46 AM CDT	Areal Flood Advisory	LOT	Boone, McHenry, Ogle, Winnebago	54 days
Apr 26, 9:29 AM CDT	Areal Flood Advisory	LOT	Cook, DeKalb, DuPage, Kane, Lake, McHenry	54 days
Apr 26, 12:13 PM CDT	Areal Flood Advisory	LOT	Cook, DuPage, Ford, Iroquois, Kane, Lake and 1 more	54 days
Apr 26, 12:26 PM CDT	River Flood Watch	LOT	Lake	6 days
Apr 26, 2:01 PM CDT	Areal Flood Advisory	LOT	Boone, Cook, DeKalb, DuPage, Grundy, Kendall and 6 more	57 days
Apr 26, 4:08 PM CDT	River Flood Advisory	LOT	Boone	36 hr

Nearby

Wind Advisories in Illinois, 2009 Wind Advisories in Indiana, 2009 Every wind advisory in 2009

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.