Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 105, NWS St. Louis, MO

July 7, 1993Clinton County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 7, 1993, 3:40 PM CDT for Clinton County, Illinois. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: Jul 7, 1993, 3:40 PM CDT (20:40 UTC)
Expired: Jul 7, 1993, 4:30 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Clinton County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 8.7 hours before the alert went out and 182 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: 1291 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 47 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 severe thunderstorm 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, Jul 7, 1:15 PM CDT, 2 hours 25 minutes before

MOZ006-009-010-011-013-014-071930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
115 PM CDT WED JUL 7 1993

...A SEVERE THUNDERSTROM WATCH COVERS MOST OF CENTRAL MISSOURI
UNTIL 7PM...
...A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON...

AT 115 PM...STRONG THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE OVER
EAST AND SOUTHERN PARTS OF CENTRAL MISSOURI AND MOVING NORTHEAST AT
35 MPH.

THERE HAVE BEEN NO OTHER REPORTS OF SEVERE WEATHER FROM THESE STORMS
SINCE SHORTLY PAST NOON.  MOST OF THE STORMS HAVE DIMINISHED AT THIS
TIME BUT SEVERE WEATHER IS STILL A POSSIBILITY AND FLASH FLOODING
IS ALSO POSSIBLE.

STAY TUNED TO WEATHER RADIO OR COMMERCIAL RADIO AND TELEVISION FOR
FURTHER UPDATES OR POSSIBLE WARNINGS.
LARM

Special weather statement, Jul 7, 1:23 PM CDT, 2 hours 17 minutes before

MOZ006-009-010-011-013-014-071930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
115 PM CDT WED JUL 7 1993

...A SEVERE THUNDERSTROM WATCH COVERS MOST OF CENTRAL MISSOURI
UNTIL 7PM...
...A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON...

AT 115 PM...STRONG THUNDERSTORMS PRODUCING VERY HEAVY RAIN WERE OVER
EAST AND SOUTHERN PARTS OF CENTRAL MISSOURI AND MOVING NORTHEAST AT
35 MPH.

THERE HAVE BEEN NO OTHER REPORTS OF SEVERE WEATHER FROM THESE STORMS
SINCE SHORTLY PAST NOON.  MOST OF THE STORMS HAVE DIMINISHED AT THIS
TIME BUT SEVERE WEATHER IS STILL A POSSIBILITY AND FLASH FLOODING
IS ALSO POSSIBLE.

STAY TUNED TO WEATHER RADIO OR COMMERCIAL RADIO AND TELEVISION FOR
FURTHER UPDATES OR POSSIBLE WARNINGS.
LARM

Special weather statement, Jul 7, 3:11 PM CDT, 29 minutes before

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Special weather statement, Jul 7, 3:12 PM CDT, 28 minutes before

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Special weather statement, Jul 7, 3:21 PM CDT, 19 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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Special weather statement, Jul 7, 3:22 PM CDT, 18 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.
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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 6, 10:37 PM CDT	Flash Flood Warning	LSX	Franklin	3 hr
Jul 7, 12:36 AM CDT	Flash Flood Warning	LSX	Crawford	4 hr
Jul 7, 9:19 AM CDT	Flash Flood Warning	LSX	Lincoln	109 min
Jul 7, 1:34 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	41 min
Jul 7, 2:03 PM CDT	Flash Flood Warning	LSX	Saint Charles	5 hr
Jul 7, 2:16 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	44 min
Jul 7, 3:21 PM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	54 min
Jul 7, 4:22 PM CDT	Severe Thunderstorm Warning	LSX	Marion	53 min
Jul 7, 4:26 PM CDT	Severe Thunderstorm Warning	LSX	Fayette	49 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1993 Every severe thunderstorm warning in 1993

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.