Alert archive / Iowa / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 77, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 24, 1997, 10:18 PM CDT for Bremer County, Iowa. It was in force for 32 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
- Jun 24, 1997, 10:18 PM CDT (03:18 UTC)
- Expired
- Jun 24, 1997, 10:50 PM CDT
- In force
- 32 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Bremer County, IA
The radar
The La Crosse radar (KARX), 148 km from the middle of the area, began a volume at 03:21 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 24, 10:22 PM CDT | Hail 1 | Waverly, 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 24, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 3.3 hours before the alert went out and 197 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
- 1986 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1290 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
879
WUUS1 KDSM 250319 RRA
SVRDSM
IAC017-250350-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1018 PM CDT TUE JUN 24 1997
* SEVERE THUNDERSTORM WARNING FOR
BREMER COUNTY - NORTHEASTERN IOWA
* UNTIL 1050 PM CDT
* SOME AREAS AFFECTED
WAVERLY
TRIPOLI
DENVER
HIGHWAY 3
* AT 1018 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR WAVERLY OR
20 MILES NORTH OF WATERLOO MOVING EAST AT 25 MPH.
* THE STORM WILL BE NEAR DENVER BY 1035 PM AND READLYN BY 1045 PM.
HAIL TO ONE INCH IS LIKELY WITH THIS DANGEROUS STORM. DO NOT GO
OUTDOORS TO VIEW THE STORM.
KULAWhat 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, Jun 24, 8:26 PM CDT, 1 hour 52 minutes before
IAZ004>006-015-023-250300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 826 PM CDT TUE JUN 24 1997 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN NORTHWEST IOWA...EMMET...KOSSUTH...WINNEBAGO...PALO ALTO AND POCAHONTAS. SEVERE THUNDERSTORM WATCH 518 REMAINS IN EFFECT UNTIL MIDNIGHT FOR THE REMAINDER OF THE DES MOINES AREA OF RESPONSIBILITY. KUBINA
Special weather statement, Jun 24, 8:27 PM CDT, 1 hour 51 minutes before
IAZ004>006-015-023-250300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 826 PM CDT TUE JUN 24 1997 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN NORTHWEST IOWA...EMMET...KOSSUTH...WINNEBAGO...PALO ALTO AND POCAHONTAS. SEVERE THUNDERSTORM WATCH 518 REMAINS IN EFFECT UNTIL MIDNIGHT FOR THE REMAINDER OF THE DES MOINES AREA OF RESPONSIBILITY. KUBINA
Local storm report, Jun 24, 9:07 PM CDT, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE DES MOINES IA 907 PM CDT TUE JUN 24 1997 TIME(CDT) .....CITY LOCATION..... ST ...EVENT/REMARKS... DATE(CDT) ....COUNTY LOCATION.... 0600 PM 3 E ARCADIA IA 1.75 INCH HAIL 06/24/97 SAC 0832 PM 2 S CARROLL IA 0.75 INCH HAIL 06/24/97 CARROLL BOYD
Local storm report, Jun 24, 9:08 PM CDT, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE DES MOINES IA 907 PM CDT TUE JUN 24 1997 TIME(CDT) .....CITY LOCATION..... ST ...EVENT/REMARKS... DATE(CDT) ....COUNTY LOCATION.... 0600 PM 3 E ARCADIA IA 1.75 INCH HAIL 06/24/97 SAC 0832 PM 2 S CARROLL IA 0.75 INCH HAIL 06/24/97 CARROLL BOYD
Special weather statement, Jun 24, 9:56 PM CDT, 22 minutes before
IAZ007>006-016-017-024-025-033>035-044-045-250400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 956 PM CDT TUE JUN 24 1997 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES...SAC...CALHOUN...WEBSTER...HUMBOLDT...WRIGHT...HANCOCK...CERRO GORDO...WORTH...CRAWFORD AND CARROLL. SEVERE THUNDERSTORM WATCH 518 REMAINS IN EFFECT UNTIL MIDNIGHT TO THE SOUTHEAST OF A LINE FROM AUDUBON TO CHARLES CITY. KUBINA
Special weather statement, Jun 24, 9:57 PM CDT, 21 minutes before
IAZ007>006-016-017-024-025-033>035-044-045-250400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 956 PM CDT TUE JUN 24 1997 THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES...SAC...CALHOUN...WEBSTER...HUMBOLDT...WRIGHT...HANCOCK...CERRO GORDO...WORTH...CRAWFORD AND CARROLL. SEVERE THUNDERSTORM WATCH 518 REMAINS IN EFFECT UNTIL MIDNIGHT TO THE SOUTHEAST OF A LINE FROM AUDUBON TO CHARLES CITY. KpUBINA
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 8:30 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 30 min |
| Jun 24, 9:22 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 48 min |
| Jun 24, 9:39 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 46 min |
| Jun 24, 10:27 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 33 min |
| Jun 24, 10:42 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 48 min |
| Jun 24, 10:50 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 40 min |
| Jun 24, 11:07 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 33 min |
| Jun 24, 11:11 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 34 min |
| Jun 24, 11:43 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 47 min |
| Jun 24, 11:51 PM CDT | Severe Thunderstorm Warning | DMX | Lucas | 34 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1997Every severe thunderstorm warning in 1997
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.