Alert archive / Illinois / Wind Advisories in 2008

Wind Advisory 5, NWS Chicago, IL

April 11, 20088 counties in Illinois; 5 counties in Indiana

NWS Chicago, IL issued this wind advisory at Apr 11, 2008, 10:05 AM CDT for 8 counties in Illinois; 5 counties in Indiana. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Apr 11, 2008, 10:05 AM CDT (15:05 UTC)
Expired: Apr 11, 2008, 8:00 PM CDT
In force: 10 hr
Issued by: NWS Chicago, IL

Counties DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Livingston County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 53 km from the middle of the area, began a volume at 15:09 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, 3.1 hours before the alert went out and 127 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: 54 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 1175 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 234 m²/s²
0-3 km storm-relative helicity: 336 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 11, 6:00 AM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Apr 11, 6:00 AM CDT, 4 hours 5 minutes before

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Hazardous weather outlook, Apr 11, 3:56 AM CDT, 6 hours 9 minutes before

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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 10, 10:58 PM CDT	River Flood Advisory	LOT	Boone	4 days
Apr 10, 11:17 PM CDT	River Flood Warning	LOT	Cook	6 days
Apr 10, 11:31 PM CDT	River Flood Advisory	LOT	Cook	3 days
Apr 11, 4:31 AM CDT	River Flood Warning	LOT	Boone	2 hr
Apr 11, 4:38 AM CDT	River Flood Warning	LOT	Ogle	7 days
Apr 11, 5:03 AM CDT	River Flood Warning	LOT	Cook	4 hr
Apr 11, 5:17 AM CDT	River Flood Warning	LOT	Kankakee	4 hr
Apr 11, 5:55 AM CDT	River Flood Warning	LOT	LaSalle	22 hr
Apr 11, 8:58 AM CDT	River Flood Warning	LOT	Winnebago	50 hr
Apr 11, 10:53 AM CDT	River Flood Warning	LOT	Bureau, LaSalle	6 days
Apr 11, 5:17 AM CDT	River Flood Warning	LOT	Porter	3 days
Apr 11, 5:17 AM CDT	River Flood Warning	LOT	Jasper, Porter	3 days

Nearby

Wind Advisories in Illinois, 2008 Wind Advisories in Indiana, 2008 Every wind advisory in 2008

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.