Alert archive / Iowa / Severe Thunderstorm Warnings in 1988
Severe Thunderstorm Warning 15, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 8, 1988, 12:02 AM CDT for Crawford County, Iowa. It was in force for 43 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
- May 8, 1988, 12:02 AM CDT (05:02 UTC)
- Expired
- May 8, 1988, 12:45 AM CDT
- In force
- 43 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Crawford 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 |
|---|---|---|---|
| May 8, 12:20 AM CDT | Hail 0.75 | Crawford, 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, 5.0 hours before the alert went out and 114 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
- 3512 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 185 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, May 7, 9:07 PM CDT, 2 hours 55 minutes before
RADAR SUMMARY...UPDATED NATIONAL WEATHER SERVICE DES MOINES IA 905 PM CDT SAT MAY 7 1988 SEVERE THUNDERSTORM WATCH FOR A LARGE PART OF NORTH CENTRAL AND WESTERN IOWA UNTIL MIDNIGHT CDT THIS SATURDAY EVENING. INTENSE THUNDERSTORMS WERE OCCURRING OVER WEST CENTRAL AND NORTHWEST IOWA. AT 9 PM THE THUNDERSTORMS WERE OCCURRING FROM DENNISON TO 20 MILES WEST OF FORT DODGE. THE HEAVIEST OF THESE STORMS WERE LOCATED JUST WEST OF DENNISON...5 MILES SOUTH OF IDA GROVE...NEAR SAC CITY AND 20 MILES WEST OF FORT DODGE NEAR GILMORE CITY. THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR. THEY ARE CAPABLE OF PRODUCING HAIL...BRIEF HEAVY RAINS AND STRONG WINDS. BRUCE/FERRY4
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Crawford, Sac | 30 min |
| May 7, 8:20 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 25 min |
| May 7, 8:35 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 40 min |
| May 7, 8:50 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 40 min |
| May 7, 9:05 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 35 min |
| May 7, 9:30 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 20 min |
| May 7, 9:31 PM CDT | Severe Thunderstorm Warning | DMX | Crawford, Sac | 44 min |
| May 8, 4:38 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 37 min |
| May 8, 9:42 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 33 min |
| May 8, 10:26 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 34 min |
| May 8, 11:08 AM CDT | Severe Thunderstorm Warning | DMX | Madison | 52 min |
| May 8, 11:20 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Warren | 70 min |
| May 8, 11:41 AM CDT | Severe Thunderstorm Warning | DMX | Polk | 49 min |
| May 8, 11:44 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 61 min |
| May 8, 12:01 PM CDT | Tornado Warning | DMX | Jasper | 29 min |
| May 8, 12:15 PM CDT | Tornado Warning | DMX | Jasper | 45 min |
| May 8, 12:25 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 65 min |
| May 8, 12:34 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 41 min |
| May 8, 12:43 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 32 min |
| May 8, 12:55 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 50 min |
| May 8, 12:58 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Warren | 47 min |
| May 8, 1:24 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 36 min |
| May 8, 1:25 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 35 min |
| May 8, 1:33 PM CDT | Tornado Warning | DMX | Poweshiek | 27 min |
| May 8, 1:40 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 50 min |
| May 8, 2:01 PM CDT | Tornado Warning | DMX | Iowa, Poweshiek | 29 min |
| May 8, 2:11 PM CDT | Tornado Warning | DMX | Keokuk, Mahaska | 49 min |
| May 8, 2:23 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan, Fayette | 42 min |
| May 8, 2:35 PM CDT | Tornado Warning | DMX | Iowa | 30 min |
| May 8, 2:35 PM CDT | Tornado Warning | DMX | Johnson | 40 min |
| May 8, 3:00 PM CDT | Tornado Warning | DMX | Washington | 30 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1988Every severe thunderstorm warning in 1988
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.