Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 24, NWS St. Louis, MO

April 25, 1993Perry County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 25, 1993, 2:14 AM CDT for Perry County, Illinois. It was in force for 31 min.

The area

The counties it named.

The facts

Issued: Apr 25, 1993, 2:14 AM CDT (07:14 UTC)
Expired: Apr 25, 1993, 2:45 AM CDT
In force: 31 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Perry County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 7.2 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: 158 J/kg
Mixed-layer CIN: -304 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 268 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, Apr 24, 11:15 PM CDT, 2 hours 59 minutes before

MOZ006-009-010-011-013-014-250530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
1115 PM CDT SAT APR 24 1993

...THE SEVERE THUNDERSTORM WATCH FOR CENTRAL MISSOURI IS NO LONGER
IN EFFECT...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN
AND SOUTHEASTERN MISSOURI...

AT 1110 PM A BROAD AREA OF SHOWERS AND VERY STRONG THUNDERSTORMS COVERED
A LARGE PORTION OF CENTRAL MISSOURI.  THE STRONGEST STORMS WERE LOCATED
IN A NARROW LINE THAT EXTENDED FROM SPRINGFIELD...TO 40 MILES SOUTHEAST
OF COLUMBIA.  THE STORMS WERE MOVING NORTHEAST AT 30 MPH.

NO SEVERE WEATHER REPORTS HAVE BEEN REPORTED IN CENTRAL MISSOURI...BUT
FREQUENT AND DANGEROUS LIGHTNING ALONG WITH VERY HEAVY RAINS HAVE BEEN
REPORTED THROUGHOUT THE REGION.  REPORTS OF FLOODING WERE LOCALIZED AND
LIMITED TO URBAN AREAS AND SMALL STREAMS.

PERIODS OF SHOWERS  AND THUNDERSTORMS WILL CONTINUE OVER MID MISSOURI
FOR MOST OF THE NIGHT ADDING TO THE THREAT OF FLOODING.  PERSONS LIVING
IN AREAS NORMALLY PRONE TO FLOODING SHOULD BE ON THE ALERT FOR RAPIDLY
RISING WATER AND LISTEN TO WEATHER RADIO FOR LATER STATEMENTS OR
POSSIBLE WARNINGS.

PERLOW

Special weather statement, Apr 24, 11:19 PM CDT, 2 hours 55 minutes before

MOZALL-250530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1118 PM CDT SAT APR 24 1993

...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PORTIONS OF
SOUTHERN AND EASTERN MISSOURI UNTIL 5 AM...

THIS WATCH INCLUDES THE CITIES ST LOUIS...ST CHARLES...
CAPE GIRARDEAU...POPLAR BLUFF...ROLLA...WEST PLAINS AND
FARMINGTON.

THIS WAS REPLACES SEVERE THUNDERSTORM WATCH NUMBER 155 THAT WAS
TO EXPIRE AT MIDNIGHT.

A TORNADO WATCH FOR SOUTHWEST MISSOURI REMAINS IN EFFECT
UNTIL 1 AM.

AT 1115 PM...THUNDERSTORMS WERE OCCURRING FROM WEST CENTRAL ILLINOIS
ACROSS EAST CENTRAL MISSOURI INTO SOUTHWEST MISSOURI.  SOME OF THESE
STORMS COULD REACH SEVERE LIMITS.

PEOPLE IN THE WATCH AREA SHOULD CONTINUE TO MONITOR THE LATEST
WEATHER CONDITIONS BY LISTENING TO NOAA WEATHER RADIO...OR LOCAL
RADIO AND T.V. STATIONS.

FERRY

Special weather statement, Apr 25, 12:25 AM CDT, 1 hour 49 minutes before

MOZ007-011-012-017-018-ILZ011-013-250630-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1223 AM CDT SUN APR 25 1993

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR EASTERN AND
SOUTHERN MISSOURI UNTIL 5AM...

SHOWERS AND THUNDERSTORMS WILL CONTINUE IN EASTERN AND SOUTHERN MISSOURI
AND WESTERN ILLINOIS OVERNIGHT.  AT 1210 AM...A LINE OF STRONG
THUNDERSTORMS EXTENDED FROM 45 MILES NORTHEAST OF ST LOUIS...TO THE
CITY OF ST. CHARLES...TO NEAR ROLLA.  THE STORMS WERE MOVING TO THE
NORTHEAST AT 35 MILES AN HOUR.

THE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAINS...DANGEROUS LIGHTNING
AND STRONG GUSTY WINDS.  AN URBAN AND SMALL STREAM FLOOD ADVISORY IS
ALSO IN EFFECT FOR EAST CENTRAL MISSOURI.  THE HEAVY RAIN WILL CAUSE
PONDING OF WATER ON ROADS.

MOTOTRISTS SHOULD USE CAUTION WHEN DRIVING IN EASTERN AND SOUTHERN
MISSOURI TONIGHT.  IF STORMS ARE IN YOUR AREA TAKE SHELTER INSIDE AND
STAY AWAY FROM WINDOWS.

MORSE

Special weather statement, Apr 25, 1:12 AM CDT, 1 hour 2 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Apr 25, 1:35 AM CDT, 39 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Special weather statement, Apr 25, 1:53 AM CDT, 21 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:23 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	26 min
Apr 24, 9:22 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Warren	38 min
Apr 24, 10:23 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis	37 min
Apr 24, 10:37 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	53 min
Apr 25, 12:28 AM CDT	Severe Thunderstorm Warning	LSX	Crawford	35 min
Apr 25, 12:38 AM CDT	Severe Thunderstorm Warning	LSX	Dent, Reynolds	52 min
Apr 25, 12:41 AM CDT	Severe Thunderstorm Warning	LSX	Saint Francois, Washington	49 min
Apr 25, 12:45 AM CDT	Severe Thunderstorm Warning	LSX	Washington	45 min
Apr 25, 12:59 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	46 min
Apr 25, 1:14 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson	33 min
Apr 24, 7:03 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene	57 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.