Alert archive / Iowa / Tornado Warnings in 1998
Tornado Warning 41, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 27, 1998, 7:27 PM CDT for Worth County, Iowa. It was in force for 33 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 27, 1998, 7:27 PM CDT (00:27 UTC)
- Expired
- Jun 27, 1998, 8:00 PM CDT
- In force
- 33 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Worth County, IA
The radar
The Minneapolis radar (KMPX), 165 km from the middle of the area, began a volume at 00:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 27, 7:34 PM CDT | Hail 1.25 | Manly, IA | |
| Jun 27, 7:40 PM CDT | Hail 1 | Manly, 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 27, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 166 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
- 2178 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 238 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 280028 RRA TORDSM IAC195-280100- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 727 PM CDT SAT JUN 27 1998 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... WORTH COUNTY IN NORTH CENTRAL IOWA * UNTIL 800 PM CDT * AT 725 PM CDT... DOPPLER RADAR INDICATED A DEVELOPING TORNADO 10 MILES NORTH NORTHWEST OF MASON CITY OR 5 MILES WEST OF MANLY MOVING NORTHEAST AT 30 MPH. * THIS TO,RNADO CAN BE EXPECTED NEAR... MANLY BY 730 PM CDT KENSETT BY 735 PM CDT BOLAN BY 740 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 27, 7:38 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 47 min |
| Jun 27, 7:41 PM CDT | Tornado Warning | DMX | Cerro Gordo | 34 min |
| Jun 27, 8:15 PM CDT | Tornado Warning | DMX | Franklin | 35 min |
| Jun 27, 8:18 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 32 min |
| Jun 27, 8:44 PM CDT | Flash Flood Warning | DMX | Cerro Gordo | 3 hr |
| Jun 27, 8:49 PM CDT | Tornado Warning | DMX | Cerro Gordo | 21 min |
| Jun 27, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 36 min |
| Jun 27, 10:08 PM CDT | Tornado Warning | DMX | Butler | 32 min |
| Jun 27, 10:33 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 62 min |
| Jun 27, 10:33 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 62 min |
| Jun 27, 10:38 PM CDT | Tornado Warning | DMX | Bremer, Butler | 32 min |
| Jun 27, 10:45 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 50 min |
| Jun 27, 10:57 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 48 min |
| Jun 27, 11:01 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk, Story | 64 min |
| Jun 27, 11:10 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 50 min |
| Jun 27, 11:18 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 62 min |
| Jun 27, 11:18 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 62 min |
| Jun 27, 11:21 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 64 min |
| Jun 27, 11:24 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 61 min |
| Jun 28, 12:01 AM CDT | Severe Thunderstorm Warning | DMX | Tama | 64 min |
| Jun 28, 12:05 AM CDT | Severe Thunderstorm Warning | DMX | Jasper | 65 min |
| Jun 28, 12:40 AM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 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; radar from the NEXRAD Level II archive.