Alert archive / Iowa / Tornado Warnings in 1989
Tornado Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Apr 26, 1989, 3:15 PM CDT for Boone County, Iowa. It was in force for 30 min. 2 reports 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 26, 1989, 3:15 PM CDT (20:15 UTC)
- Expired
- Apr 26, 1989, 3:45 PM CDT
- In force
- 30 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Boone 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 26, 3:30 PM CDT | Hail 1 | Boone, IA | |
| Apr 26, 3:35 PM CDT | Tornado F1 | Boone, 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 12:00Z, 8.3 hours before the alert went out and 218 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3621 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 179 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 262016
TORDSM
IAC015-262045-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CDT WED APR 26 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 345 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE CENTRAL PART OF IOWA
BOONE
AT 315 PM...WEATHER SERVICE RADAR INDICATED A POSSIBLE
TORNADO OVER NORTHERN BOONE COUNTY NEAR PILOT MOUND...
OR ABOUT 45 MILES NORTHWEST OF DES MOINES.
THE STORM CONTINUED MOVING EAST AT 30 MILES AN HOUR. PILOT
MOUND AND FRASER ARE IN THE PATH OF THE STORM.
IF YOU ARE IN THE PATH OF THIS TORNADO...THE SAFEST PLACE IS IN A
BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF
NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM ON THE
LOWEST FLOOR. IF YOU ARE IN A VEHICLE OR MOBILE HOME...LEAVE IT AT
ONCE AND TAKE SHELTER IN A REINFORCED BUILDING OR IN A DITCH.
THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS ISSUED AT 251 PM.
KS/TRUETTThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 11:19 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson, Emmet | 41 min |
| Apr 26, 12:06 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 54 min |
| Apr 26, 12:32 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 28 min |
| Apr 26, 1:05 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 40 min |
| Apr 26, 2:51 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 39 min |
| Apr 26, 2:54 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Buchanan | 51 min |
| Apr 26, 3:46 PM CDT | Tornado Warning | DMX | Boone, Story | 44 min |
| Apr 26, 4:06 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Linn | 39 min |
| Apr 26, 4:15 PM CDT | Tornado Warning | DMX | Polk | 45 min |
| Apr 26, 4:45 PM CDT | Severe Thunderstorm Warning | DMX | Johnson, Linn | 45 min |
| Apr 26, 4:45 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 45 min |
| Apr 26, 4:54 PM CDT | Tornado Warning | DMX | Jasper, Polk | 51 min |
| Apr 26, 5:20 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk | 55 min |
| Apr 26, 5:32 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene, Guthrie | 43 min |
| Apr 26, 6:10 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 50 min |
| Apr 26, 6:23 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 67 min |
| Apr 26, 6:53 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Wapello | 67 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.