Alert archive / Illinois / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 142, NWS Lincoln, IL

July 28, 1999Fulton County, Schuyler County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 28, 1999, 5:55 AM CDT for Fulton County, Schuyler County, Illinois. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 28, 1999, 5:55 AM CDT (10:55 UTC)
Expired: Jul 28, 1999, 6:45 AM CDT
In force: 50 min
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Fulton County, IL, Schuyler County, IL

The radar

The Lincoln radar (KILX), 93 km from the middle of the area, began a volume at 10:54 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

Davenport, (KDVN), launched 00:00Z, 10.9 hours before the alert went out and 145 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: 2133 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1051 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 12.4

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 2:45 AM CDT, 3 hours 10 minutes earlier.

Area forecast discussion, Jul 28, 2:45 AM CDT, 3 hours 10 minutes before

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In the hours before

Local storm report, Jul 28, 4:20 AM CDT, 1 hour 35 minutes before

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Local storm report, Jul 28, 4:20 AM CDT, 1 hour 35 minutes before

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  <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.
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      <p id="message2">
        Please try again in a few minutes.
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Special weather statement, Jul 28, 5:45 AM CDT, 10 minutes before

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  <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.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
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Special weather statement, Jul 28, 5:45 AM CDT, 10 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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>
      <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.
      </p>
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The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 12:37 AM CDT	Severe Thunderstorm Warning	ILX	Knox, Stark	53 min
Jul 28, 1:10 AM CDT	Tornado Warning	ILX	Stark	20 min
Jul 28, 1:12 AM CDT	Severe Thunderstorm Warning	ILX	Peoria	48 min
Jul 28, 1:31 AM CDT	Severe Thunderstorm Warning	ILX	Marshall, Stark	59 min
Jul 28, 2:00 AM CDT	Severe Thunderstorm Warning	ILX	Peoria	30 min
Jul 28, 2:01 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Tazewell	59 min
Jul 28, 2:42 AM CDT	Severe Thunderstorm Warning	ILX	Logan	48 min
Jul 28, 2:46 AM CDT	Severe Thunderstorm Warning	ILX	McLean	59 min
Jul 28, 3:11 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt	49 min
Jul 28, 6:41 AM CDT	Severe Thunderstorm Warning	ILX	McLean	49 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1999 Every severe thunderstorm warning in 1999

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.