Alert archive / Illinois / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 11, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 8, 1993, 7:18 PM CDT for Henry County, Whiteside County, Illinois. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Jun 8, 1993, 7:18 PM CDT (00:18 UTC)
- Expired
- Jun 8, 1993, 8:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
Counties Henry County, IL, Whiteside County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 361 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.
- Mixed-layer CAPE
- 4221 J/kg
- Mixed-layer CIN
- -161 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- -0.2
- Supercell composite
- -3.5
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, Jun 8, 6:04 PM CDT, 1 hour 14 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ018-090000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 604 PM CDT TUE JUN 8 1993 ...SHOWERS AND STORMS WERE MOVING TOWARD THE TRI-STATE... AT 600 PM CDT...A SMALL AREA OF RAINSHOWERS WERE OVER THE CITY OF MONONA IN CLAYTON COUNTY 45 MILES TO THE NORTHWEST OF DUBUQUE...OTHERWISE NO PRECIPITATION WAS INDICATED IN THE TRI-STATES. RADAR INDICATED A LARGE AREA OF SHOWERS AND STORMS ABOUT 20 MILES TO THE SOUTHWEST OF THE TRI-STATES AREA OR 55 MILES TO THE SOUTHWEST OF DUBUQUE. THE SHOWERS AND STORMS ARE MOVING TO THE NORTHEAST RAPIDLY AT 45 MILES AN HOUR AND ARE EXPECTED TO ENTER DELAWARE AND JONES COUNTIES BETWEEN 600 AND 630 PM CDT THIS EVENING. THE SHOWERS AND STORMS WILL MOVE INTO MOST OF THE TRI-STATES WEST OF THE MISSISSIPI RIVER BY 700 PM. PERSONS IN THE AREA SHOULD REMAIN ALERT FOR TORNADO DEVELOPMENT THIS EVENING...MAKE PLANS NOW FOR WHERE YOU WILL GO SHOULD SEVERE WEATHER THREATEN YOUR AREA OR IF A WARNING IS ISSUED. IF A WARNING IS ISSUED OR YOU OBSERVE DANGEROUS WEATHER CONDITIONS THEN TAKE COVER IMMEDIATELY. ...TORNADO WATCH FOR LAFAYETTE COUNTY UNTIL 800 PM CDT... ...TORNADO WATCH FOR CLAYTON...GRANT...JONES...DELAWARE UNTIL 900 PM CDT... ...TORNADO WATCH FOR DUBUQUE...JACKSON...JO-DAVIESS UNTIL 1100 PM CDT... ...FLASH FLOOD WATCH FOR JO-DAVIESS TONIGHT... DEROY NNNN
Special weather statement, Jun 8, 6:04 PM CDT, 1 hour 14 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ018-090000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 604 PM CDT TUE JUN 8 1993 ...SHOWERS AND STORMS WERE MOVING TOWARD THE TRI-STATE... AT 600 PM CDT...A SMALL AREA OF RAINSHOWERS WERE OVER THE CITY OF MONONA IN CLAYTON COUNTY 45 MILES TO THE NORTHWEST OF DUBUQUE...OTHERWISE NO PRECIPITATION WAS INDICATED IN THE TRI-STATES. RADAR INDICATED A LARGE AREA OF SHOWERS AND STORMS ABOUT 20 MILES TO THE SOUTHWEST OF THE TRI-STATES AREA OR 55 MILES TO THE SOUTHWEST OF DUBUQUE. THE SHOWERS AND STORMS ARE MOVING TO THE NORTHEAST RAPIDLY AT 45 MILES AN HOUR AND ARE EXPECTED TO ENTER DELAWARE AND JONES COUNTIES BETWEEN 600 AND 630 PM CDT THIS EVENING. THE SHOWERS AND STORMS WILL MOVE INTO MOST OF THE TRI-STATES WEST OF THE MISSISSIPI RIVER BY 700 PM. PERSONS IN THE AREA SHOULD REMAIN ALERT FOR TORNADO DEVELOPMENT THIS EVENING...MAKE PLANS NOW FOR WHERE YOU WILL GO SHOULD SEVERE WEATHER THREATEN YOUR AREA OR IF A WARNING IS ISSUED. IF A WARNING IS ISSUED OR YOU OBSERVE DANGEROUS WEATHER CONDITIONS THEN TAKE COVER IMMEDIATELY. ...TORNADO WATCH FOR LAFAYETTE COUNTY UNTIL 800 PM CDT... ...TORNADO WATCH FOR CLAYTON...GRANT...JONES...DELAWARE UNTIL 900 PM CDT... ...TORNADO WATCH FOR DUBUQUE...JACKSON...JO-DAVIESS UNTIL 1100 PM CDT... ...FLASH FLOOD WATCH FOR JO-DAVIESS TONIGHT... DEROY NNNN
Special weather statement, Jun 8, 6:20 PM CDT, 58 minutes before
ILZ004-IAZ078-088-089-099-090030- SPECIAL WEATHER STATEMENT...CORRECTION TO HEADER NATIONAL WEATHER SERVICE MOLINE IL 620 PM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT FOR LOUISA...HENRY...DES MOINES...AND LEE COUNTIES IN IOWA UNTIL 9 PM... ...A TORNADO WATCH IS IN EFFECT FOR CEDAR...CLINTON...MUSCATINE...AND SCOTT COUNTIES IN IOWA AND HENRY...MERCER...ROCK ISLAND...AND WHITESIDE COUNTIES IN ILLINOIS UNTIL 11 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE ENTIRE BISTATE AREA TONIGHT... AT 610 PM CDT...INTENSE THUNDERSTORMS WERE IN SOUTHERN WASHINGTON COUNTY... IOWA MOVING EAST AT 40 MILES AN HOUR. THESE STORMS WILL BE MOVING THROUGH NORTHWESTERN HENRY COUNTY AND INTO WESTERN LOUISA COUNTY...IOWA BY 630 PM. THESE STORMS ARE CAPABLE OF PRODUCING WINDS IN EXCESS OF 45 MILES AN HOUR... HAIL...AND VERY HEAVY RAIN. PERSONS IN NORTHERN HENRY COUNTY...IOWA AND LOUISA COUNTY...IOWA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER AND BE READY TO MOVE TO A PLACE OF SAFETY IF CONDITIONS WARRANT. GOEHRING
Special weather statement, Jun 8, 6:20 PM CDT, 58 minutes before
ILZ004-IAZ078-088-089-099-090030- SPECIAL WEATHER STATEMENT...CORRECTION TO HEADER NATIONAL WEATHER SERVICE MOLINE IL 620 PM CDT TUE JUN 8 1993 ...A TORNADO WATCH IS IN EFFECT FOR LOUISA...HENRY...DES MOINES...AND LEE COUNTIES IN IOWA UNTIL 9 PM... ...A TORNADO WATCH IS IN EFFECT FOR CEDAR...CLINTON...MUSCATINE...AND SCOTT COUNTIES IN IOWA AND HENRY...MERCER...ROCK ISLAND...AND WHITESIDE COUNTIES IN ILLINOIS UNTIL 11 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE ENTIRE BISTATE AREA TONIGHT... AT 610 PM CDT...INTENSE THUNDERSTORMS WERE IN SOUTHERN WASHINGTON COUNTY... IOWA MOVING EAST AT 40 MILES AN HOUR. THESE STORMS WILL BE MOVING THROUGH NORTHWESTERN HENRY COUNTY AND INTO WESTERN LOUISA COUNTY...IOWA BY 630 PM. THESE STORMS ARE CAPABLE OF PRODUCING WINDS IN EXCESS OF 45 MILES AN HOUR... HAIL...AND VERY HEAVY RAIN. PERSONS IN NORTHERN HENRY COUNTY...IOWA AND LOUISA COUNTY...IOWA SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER AND BE READY TO MOVE TO A PLACE OF SAFETY IF CONDITIONS WARRANT. GOEHRING
Special weather statement, Jun 8, 6:57 PM 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>Special weather statement, Jun 8, 6:57 PM 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>Nearby
Severe Thunderstorm Warnings in Illinois, 1993Every 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.