Alert archive / Iowa / Tornado Warnings in 1989
Tornado Warning 8, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Apr 27, 1989, 8:44 PM CDT for Calhoun County, Carroll County, Sac County, Iowa. It was in force for 61 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 27, 1989, 8:44 PM CDT (01:44 UTC)
- Expired
- Apr 27, 1989, 9:45 PM CDT
- In force
- 61 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Calhoun County, IA, Carroll County, IA, Sac County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 27, 9:09 PM CDT | Tornado F1 | Calhoun, IA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.7 hours before the alert went out and 163 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
- 17 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 3565 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 280146
TORDSM
IAC161-025-027-280245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
844 PM CDT THU APR 27 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE WEST CENTRAL PART OF IOWA
EASTERN SAC...CALHOUN...NORTHWEST CARROLL
AT 840 PM...WEATHER SERVICE RADAR INDICATED A POSSIBLE TORNADO
JUST NORTHWEST OF CARROLL NEAR BREDA...OR ABOUT 45 MILES
SOUTHWEST OF FORT DODGE.
THE STORM WAS MOVING NORTHEAST AT 35 MILES AN HOUR..AND WILL BE
AFFECTING THE CITIES OF BREDA...LAKE CITY...AND ROCKWELL CITY.
<
IF YOU ARE IN THE PATH OF THI\S STORM...TAKE COVER AT ONCE.
BARLOW/TRUETTWhat forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Local storm report, Apr 27, 3:00 PM CDT, 5 hours 44 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
300 PM CDT THU APR 27 1989
THE FOLLOWING ARE ADDITIONAL STORM REPORTS OBTAINED TODAY FROM THE
SEVERE WEATHER EVENT IN IOWA WHICH TOOK PLACE YESTERDAY AFTERNOON
AND EVENING (WEDNESDAY APRIL 26).
TIME OF EVENT EVENT
700 PM DIME TO QUARTER SIZED HAIL FELL IN THE FAIRFIELD
AREA IN JEFFERSON COUNTY.
730 PM A ROOF WAS BLOWN OFF A GARAGE IN THE CITY OF
OTTUMWA IN WAPELLO COUNTY.
744 PM WINDOWS IN SOME HOUSES IN NORTHEAST VAN BUREN
COUNTY WERE BROKEN DUE TO DIME TO QUARTER SIZED
HAIL BORNE ON HIGH WINDS.
/
END/BIKLESpecial weather statement, Apr 27, 3:36 PM CDT, 5 hours 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 337 PM CDT THU APR 27 1989 ...A TORNADO WATCH IS IN EFFECT FOR A SMALL PART OF WESTERN IOWA UNTIL 8 PM... ALTHOUGH A TORNADO WATCH IS IN EFFECT...THERE WAS NO PRECIPITATION IN THE STATE OF IOWA AT 330 PM. BARLOW
Special weather statement, Apr 27, 4:43 PM CDT, 4 hours 1 minute before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 442 PM CDT THU APR 27 1989 ...A TORNADO WATCH IS IN EFFECT FOR A SMALL PART OF WESTERN IOWA UNTIL 8 PM... THERE HAS BEEN NO SEVERE WEATHER REPORTED IN IOWA SINCE 335 PM. AT 435 PM...A SMALL CLUSTER OF SHOWERS AND THUNDERSTORMS HAD DEVELOPED OVER SOUTHEAST IOWA. THE PRECIPITATION WAS LOCATED AROUND THE CITIES OF BRIGHTON...WASHINGTON AND WAPELLO. A THUNDERSTORM HAD ALSO DEVELOPED AROUND BLOOMFIELD. THE AREA OF DEVELOPMENT WAS BETWEEN THE CITIES OF OTTUMWA...BURLINGTON AND THE QUAD CITIES. THE SHOWERS AND STORMS WERE MOVING EAST AT 25 MILES AN HOUR. BARLOW
Special weather statement, Apr 27, 8:17 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 815 PM CDT THU APR 27 1989 ...STRONG THUNDERSTORMS MOVING INTO CRAWFORD COUNTY IN WEST CENTRAL IOWA... AT 815 PM...SEVERAL STRONG THUNDERSTORMS WERE MOVING THROUGH CRAWFORD COUNTY. ONE STORM WAS OVER SOUTHEAST CRAWFORD COUNTY...WHILE ANOTHER CLUSTER OF STORMS WAS OVER NORTHWEST SHELBY AND EASTERN HARRISON COUNTIES. THESE AREAS ARE SOME 40 TO 60 MILES NORTHEAST OF COUNCIL BLUFFS. SO FAR...THESE STORMS HAVE PRODUCED LOTS OF PEA TO MARBLE SIZED HAIL...AND WINDS OF 30 TO 40 MILES AN HOUR. ALTHOUGH NO SEVERE WEATHER IS INDICATED AT THIS TIME...PEOPLE IN CRAWFORD COUNTY SHOULD REMAIN ALERT. REMEMBER...A TORNADO- WATCH IS IN EFFECT UNTIL 1 AM. < TRUETT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:08 PM CDT | Tornado Warning | DMX | Davis, Van Buren | 22 min |
| Apr 27, 7:33 PM CDT | Tornado Warning | DMX | Van Buren | 27 min |
| Apr 27, 8:58 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 37 min |
| Apr 27, 10:05 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 40 min |
| Apr 27, 10:05 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor, Union | 40 min |
| Apr 27, 10:33 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison | 42 min |
| Apr 27, 10:33 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 42 min |
| Apr 27, 11:05 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk, Warren | 40 min |
| Apr 27, 11:26 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 49 min |
| Apr 27, 11:42 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 48 min |
| Apr 28, 12:01 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Monroe | 44 min |
| Apr 28, 12:01 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 44 min |
| Apr 28, 12:01 AM CDT | Severe Thunderstorm Warning | DMX | Marion | 44 min |
| Apr 28, 12:16 AM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 44 min |
Nearby
Tornado Warnings in Iowa, 1989Every tornado warning in 1989Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.