Alert archive / Iowa / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 96, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 26, 1989, 4:53 PM CDT for Davis County, Iowa. It was in force for 37 min.
The area
The counties it named.
The facts
- Issued
- Jun 26, 1989, 4:53 PM CDT (21:53 UTC)
- Expired
- Jun 26, 1989, 5:30 PM CDT
- In force
- 37 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Davis County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 12:00Z, 9.9 hours before the alert went out and 237 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
- 1324 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1200 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 26, 12:45 PM CDT, 4 hours 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTION FOR TIME... NATIONAL WEATHER SERVICE DES MOINES IA 1237 PM CDT MON JUN 26 1989 ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EASTERN IOWA UNTIL 600 PM CDT... AT 1225 PM...SHOWERS AND STRONG THUNDERSTORMS WERE IN NORTHEAST... EAST CENTRAL AND SOUTHEAST IOWA. LOCATED EAST OF LINE FROM THE NORTHEAST CORNER OF THE STATE TO THE IOWA/MISSOURI BORDER SOUTH OTTUMWA. THE STRONGEST THUNDERSTORMS WERE IN A 10 MILE WIDE AREA FROM 20 MILES SOUTHEAST OF OTTUMWA NEAR FAIRFIELD...TO 30 MILES SOUTH OF CEDAR RAPIDS NEAR WASHINGTON. THESE STORMS MAY PRODUCE SMALL HAIL...STRONG GUSTY WINDS...DANGEROUS LIGHTNING...AND HEAVY RAINS AS THEY MOVE TO THE EAST AT 25 TO 30 MILES AN HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE IN SOUTH CENTRAL IOWA...IN A 15 MILE WIDE AREA FROM 40 MILES SOUTHEAST OF DES MOINES JUST EAST OF CHARITON...TO THE IOWA/MISSOURI BORDER NEAR LAMONI. THESE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT 25 MILES AN HOUR. MG
Special weather statement, Jun 26, 12:52 PM CDT, 4 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1252 PM CDT MON JUN 26 1989
THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH
NUMBER 537 FOR NORTHEAST IOWA...EFFECTIVE IMMEDIATELY.
THE FOLLOWING COUNTIES ARE NO LONGER IN THE WATCH AREA:
CLAYTON...DELAWARE...DUBUQUE...JONES...AND JACKSON.
THE POTENTIAL SEVERE STORMS NO LONGER AFFECT THESE COUNTIES.
HOWEVER...SEVERE THUNDERSTORM WATCH NUMBER 537 STILL IS IN EFFECT FOR
THE FOLLOWING COUNTIES IN EAST CENTRAL AND SOUTHEAST IOWA:
CEDAR...CLINTON...MUSCATINE...SCOTT...LOUISA...HENRY...
DES MOINES...AND LEE.
STORMS WITH A POTENTIAL OF CAUSING SEVERE WEATHER REMAIN A THREAT FOR
THIS AREA.
BIKLESpecial weather statement, Jun 26, 1:43 PM CDT, 3 hours 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 140 PM CDT MON JUN 26 1989 ...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHEAST IOWA UNTIL 600 PM CDT... AT 127 PM...SHOWERS AND STRONG THUNDERSTORMS WERE IN EAST CENTRAL ...AND SOUTHEAST IOWA. LOCATED EAST OF LINE FROM 30 MILES NORTHWEST OF DUBUQUE...TO THE IOWA/MISSOURI BORDER SOUTH OF KEOSAUQUA. THE STRONGEST THUNDERSTORMS WERE IN A 10 MILE WIDE AREA FROM 15 MILES NORTHWEST OF BURLINGTON TO DAVENPORT/MOLINE. THESE STORMS MAY PRODUCE SMALL HAIL...STRONG GUSTY WINDS...DANGEROUS LIGHTNING...AND HEAVY RAINS AS THEY MOVE TO THE EAST AT 25 TO 30 MILES AN HOUR. OTHER ISOLATED SHOWERS AND THUNsDERSTORMS WERE IN CENTRAL IOWA... BETWEEN DES MOINES AND RATHBUN RESERVOIR...AND WERE MOVING TO THE EAST AT 25 MILES AN HOUR. MG
Special weather statement, Jun 26, 2:15 PM CDT, 2 hours 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
213 PM CDT MON JUN 26 1989
SEVERE THUNDERSTORM WATCH NUMBER 537 IS CANCELLED FOR EXTREME
EAST CENTRAL AND EXTREME SOUTHEAST IOWA...EFFECTIVE IMMEDIATELY.
THE FOLLOWING COUNTIES ARE NO LONGER INCLUDED IN THIS WATCH:
CEDAR...CLINTON...MUSCATINE...SCOTT...LOUISA...
HENRY...DES MOINES...AND LEE.
THE THUNDERSTORMS HAVING A POTENTIAL FOR SEVERE WEATHER HAVE MOVED
EAST OF IOWA.
SEVERE THUNDERSTORM WATCH NUMBER 537 IS STILL IN EFFECT FOR PARTS
OF WESTERN ILLINOIS.
BIKLESpecial weather statement, Jun 26, 3:43 PM CDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 343 PM CDT MON JUN 26 1989 ...SEVERE THUNDERSTORM WATCH FOR PARTS OF SOUTHEAST IOWA UNTIL 1000 PM CDT... AT 330 PM CDT... A LINE OF STRONG THUNDERSTORMS WAS LOCATED OVER SOUTHEAST INTO SOUTH CENTRAL IOWA. THE LINE WAS ABOUT 20 MILES WIDE...AND EXTENDED FROM ABOUT 25 MILES SOUTHWEST OF CEDAR RAPIDS...SOUTHWEST TO JUST EAST OF LAMONI. LAMONI IS ABOUT 60 MILES SOUTH OF DES MOINES. THE MOST INTENSE STORMS WERE LOCATED 15 MILES NORTHEAST OF OTTUMWA...AND ABOUT MIDWAY BETWEEN OTTUMWA AND LAMONI. THESE STORMS ARE CAPABLE OF PRODUCING WINDS OF OVER 50 MILES AN HOUR AND LARGE HAIL. THE STORMS WERE MOVING EAST AT 35 MILES AN HOUR. THEY WILL REACH BLOOMFIELD...FAIRFIELD...KEOSAUQUA...AND MT. PLEASANT BETWEEN 400 AND 430 PM THIS AFTERNOON. \ ELSEWHERE...A FEW THUNDERSTORMS WERE DEVELOPING JUST TO THE EAST AND SOUTHEAST OF DES MOINES. A FE.W SHOWERS WERE ALSO LOCATED OVER NORTH- WEST IOWA...EAST OF SIOUX CITY. SCHUMACHER
Special weather statement, Jun 26, 4:45 PM CDT, 8 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 Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:56 PM CDT | Severe Thunderstorm Warning | DMX | Keokuk, Mahaska | 49 min |
| Jun 26, 3:25 PM CDT | Severe Thunderstorm Warning | DMX | Keokuk | 50 min |
| Jun 26, 3:27 PM CDT | Severe Thunderstorm Warning | DMX | Keokuk | 48 min |
| Jun 26, 3:55 PM CDT | Tornado Warning | DMX | Keokuk, Wapello | 35 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1989Every severe thunderstorm warning in 1989
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.