Alert archive / Illinois / Flash Flood Warnings in 1997

Flash Flood Warning 20, NWS Chicago, IL

August 17, 1997Ford County, Illinois

NWS Chicago, IL issued this flash flood warning at Aug 17, 1997, 1:05 AM CDT for Ford County, Illinois. It was in force for 6 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: Aug 17, 1997, 1:05 AM CDT (06:05 UTC)
Expired: Aug 17, 1997, 7:00 AM CDT
In force: 6 hr
Issued by: NWS Chicago, IL
Area: Whole counties

County Ford County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.1 hours before the alert went out and 59 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: 5712 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 995 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 16, 8:32 PM CDT, 4 hours 33 minutes before

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Special weather statement, Aug 16, 9:08 PM CDT, 3 hours 57 minutes before

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Special weather statement, Aug 16, 11:15 PM CDT, 1 hour 50 minutes before

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Special weather statement, Aug 16, 11:17 PM CDT, 1 hour 48 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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Local storm report, Aug 16, 11:55 PM CDT, 1 hour 10 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        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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Local storm report, Aug 16, 11:56 PM CDT, 1 hour 9 minutes before

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<head>
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        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
Aug 16, 7:02 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb	28 min
Aug 16, 7:29 PM CDT	Flash Flood Warning	LOT	Cook	3 hr
Aug 16, 8:07 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Kendall, Will	68 min
Aug 16, 8:07 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle	68 min
Aug 16, 9:02 PM CDT	Severe Thunderstorm Warning	LOT	Kankakee	28 min
Aug 17, 2:45 AM CDT	Flash Flood Warning	LOT	Livingston	6 hr
Aug 16, 7:09 PM CDT	Tornado Warning	LOT	LaPorte	36 min
Aug 16, 7:48 PM CDT	Severe Thunderstorm Warning	LOT	LaPorte, Saint Joseph	42 min
Aug 16, 7:59 PM CDT	Tornado Warning	LOT	Saint Joseph	31 min
Aug 16, 8:16 PM CDT	Severe Thunderstorm Warning	LOT	Elkhart	29 min

Nearby

Flash Flood Warnings in Illinois, 1997 Every flash flood warning in 1997

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.