Alert archive / Iowa / Tornado Warnings in 1998
Tornado Warning 53, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 29, 1998, 2:23 PM CDT for Marion County, Iowa. It was in force for 32 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
- Jun 29, 1998, 2:23 PM CDT (19:23 UTC)
- Expired
- Jun 29, 1998, 2:55 PM CDT
- In force
- 32 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Marion County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 2:24 PM CDT | Thunderstorm Wind 50 | Pella, IA | |
| Jun 29, 2:26 PM CDT | Thunderstorm Wind 61 | Pella, 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 29, 1:00 PM CDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 7.4 hours before the alert went out and 219 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
- 917 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 762 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 291923 RRA TORDSM IAC125-291955- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 223 PM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... MARION COUNTY IN SOUTH CENTRAL IOWA * UNTIL 255 PM CDT * AT 222 PM CDT... LOCAL LAW ENFORCEMENT REPORTED A TORNADO 25 MILES EAST SOUTHEAST OF DES MOINES OR 7 MILES NORTH NORTHWEST OF KNOXVILLE MOVING EAST SOUTHEAST AT 40 MPH. * THIS TORNADO CAN BE EXPECTED NEAR... KNOXVILLE BY 231 PM CDT RED ROCK RESERVOIR BY 232 PM CDT PERSHING BY 241 PM CDT HARVEY BY 244 PM CDT TRACY BY 249 PM CDT GO TO THE BASEMENT* OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! COGIL
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 12:18 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 47 min |
| Jun 29, 12:24 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 36 min |
| Jun 29, 12:32 PM CDT | Tornado Warning | DMX | Hamilton | 33 min |
| Jun 29, 12:37 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 48 min |
| Jun 29, 12:41 PM CDT | Tornado Warning | DMX | Crawford | 49 min |
| Jun 29, 12:59 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 51 min |
| Jun 29, 1:09 PM CDT | Severe Thunderstorm Warning | DMX | Story | 36 min |
| Jun 29, 1:17 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 33 min |
| Jun 29, 1:20 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 50 min |
| Jun 29, 1:23 PM CDT | Tornado Warning | DMX | Boone, Dallas | 32 min |
| Jun 29, 1:32 PM CDT | Tornado Warning | DMX | Polk | 33 min |
| Jun 29, 1:39 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 31 min |
| Jun 29, 1:44 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Tama | 46 min |
| Jun 29, 1:48 PM CDT | Tornado Warning | DMX | Dallas, Madison | 47 min |
| Jun 29, 1:53 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 32 min |
| Jun 29, 2:04 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 21 min |
| Jun 29, 2:08 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 47 min |
| Jun 29, 2:08 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 47 min |
| Jun 29, 2:11 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 34 min |
| Jun 29, 2:18 PM CDT | Tornado Warning | DMX | Tama | 32 min |
| Jun 29, 2:28 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Mahaska, Monroe | 62 min |
| Jun 29, 2:28 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Warren | 62 min |
| Jun 29, 2:44 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 66 min |
| Jun 29, 2:55 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 65 min |
| Jun 29, 3:10 PM CDT | Tornado Warning | DMX | Davis | 35 min |
| Jun 29, 3:25 PM CDT | Tornado Warning | DMX | Dallas | 50 min |
| Jun 29, 3:27 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 48 min |
| Jun 29, 3:40 PM CDT | Tornado Warning | DMX | Polk | 35 min |
| Jun 29, 3:47 PM CDT | Tornado Warning | DMX | Warren | 33 min |
| Jun 29, 4:05 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 50 min |
| Jun 29, 5:41 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 49 min |
| Jun 29, 5:44 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 51 min |
| Jun 29, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 35 min |
| Jun 29, 6:19 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 66 min |
| Jun 29, 6:25 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 65 min |
Nearby
Tornado Warnings in Iowa, 1998Every tornado warning in 1998Tornadoes in 1998
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.