Alert archive / Iowa / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 76, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 24, 1997, 9:39 PM CDT for Dallas County, Guthrie County, Iowa. It was in force for 46 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 24, 1997, 9:39 PM CDT (02:39 UTC)
- Expired
- Jun 24, 1997, 10:25 PM CDT
- In force
- 46 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Dallas County, IA, Guthrie County, IA
The radar
The Des Moines radar (KDMX), 46 km from the middle of the area, began a volume at 02:35 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, 9:57 PM CDT | Hail 0.75 | Dawson, IA | |
| Jun 24, 10:01 PM CDT | Hail 1 | Dawson, 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
Omaha, NE (KOAX), launched 00:00Z, 2.7 hours before the alert went out and 179 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
- 2805 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
636
WUUS1 KDSM 250240 RRA
SVRDSM
IAC049-077-250325-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
939 PM CDT TUE JUN 24 1997
* SEVERE THUNDERSTORM WARNING FOR
NORTHWESTERN DALLAS COUNTY - CENTRAL IOWA
NORTHEASTERN GUTHRIE COUNTY - WEST CENTRAL IOWA
* UNTIL 1025 PM CDT
* SOME AREAS AFFECTED
DAWSON
ALONG HIGHWAY 141
JAMAICA
BAGLEY
* AT 937 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR BAGLEY OR 40
MILES NORTHWEST OF DES MOINES MOVING EAST AT 25 MPH.
* THE STORM WILL BE NEAR JAMAICA BY 950 PM AND DAWSON BY 1000 PM.
HAIL TO ONE INCH IS LIKELY WITH THIS DANGEROUS STORM. DO NOT
GO OUTDOORS.
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, 7:32 PM CDT, 2 hours 7 minutes before
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-250800- CENTRAL IOWA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 732 PM CDT TUE JUN 24 1997 HAZARD -- ISOLATED SEVERE THUNDERSTORMS AND HEAVY RAINFALL. AREA OF CONCERN -- ENTIRE OUTLOOK AREA. TIMING DETAILS -- THROUGH MIDNIGHT FOR SEVERE WEATHER AND OVERNIGHT FOR HEAVY RAIN. METEOROLOGICAL COMMENTS -- A LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR MASON CITY TO NEAR DENISON IN WEST CENTRAL IOWA IS EXPECTED TO INTENSIFY AS IT DRIFTS SLOWLY SOUTHEAST. THE LATEST SOUNDING DATA HAS CAPE/S OF NEARLY 4000 J/KG AND PRECIPITABLE WATER VALUES OF NEARLY TWO INCHES. GIVEN THE RECENT HEAVY RAINS AND PROBABLE TRAINING OF THE STORMS...FLOODING AND FLASH FLOODING IS POSSIBLE THIS EVENING. AS LITTLE AS TWO INCHES OF RAIN IN THREE HOURS MAY LEAD TO FLOODING ESPECIALLY OVER CRAWFORD...CARROLL AND AUDUBON COUNTIES IN WEST-CENTRAL IOWA. ELSEWHERE THE MAIN THREAT WILL BE FROM SEVERE THUNDERSTORMS. WIND PROFILES SUGGEST THAT THE MAIN SEVERE WEATHER THREAT WILL BE FROM DAMAGING WINDS AND LARGE HAIL. PRECAUTIONS -- SPOTTER ACTIVATION WILL BE REQUIRED THIS EVENING. EMERGENCY MANAGERS SHOULD REMAIN ALERT OF THE LATEST SHORT-TERM FORECAST FOR THEIR AREA. PEOPLE LIVING IN OR NEAR FLOOD PRONE AREAS SHOULD REMAIN ALERT TO RAPID WATER RISES. NEVER DRIVE INTO STANDING WATER. KUBINA
Special weather statement, Jun 24, 7:33 PM CDT, 2 hours 6 minutes before
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-250800- CENTRAL IOWA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 732 PM CDT TUE JUN 24 1997 HAZARD -- ISOLATED SEVERE THUNDERSTORMS AND HEAVY RAINFALL. AREA OF CONCERN -- ENTIRE OUTLOOK AREA. TIMING DETAILS -- THROUGH MIDNIGHT FOR SEVERE WEATHER AND OVERNIGHT FOR HEAVY RAIN. METEOROLOGICAL COMMENTS -- A LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR MASON CITY TO NEAR DENISON IN WEST CENTRAL IOWA IS EXPECTED TO INTENSIFY AS IT DRIFTS SLOWLY SOUTHEAST. THE LATEST SOUNDING DATA HAS CAPE/S OF NEARLY 4000 J/KG AND PRECIPITABLE WATER VALUES OF NEARLY TWO INCHES. GIVEN THE RECENT HEAVY RAINS AND PROBABLE TRAINING OF THE STORMS...FLOODING AND FLASH FLOODING IS POSSIBLE THIS EVENING. AS LITTLE AS TWO INCHES OF RAIN IN THREE HOURS MAY LEAD TO FLOODING ESPECIALLY OVER CRAWFORD...CARROLL AND AUDUBON COUNTIES IN WEST-CENTRAL IOWA. ELSEWHERE THE MAIN THREAT WILL BE FROM SEVERE THUNDERSTORMS. WIND PROFILES SUGGEST THAT THE MAIN SEVERE WEATHER THREAT WILL BE FROM DAMAGING WINDS AND LARGE HAIL. PRECAUTIONS -- SPOTTER ACTIVATION WILL BE REQUIRED THIS EVENING. EMERGENCY MANAGERS SHOULD REMAIN ALERT OF THE LATEST SHORT-TERM FORECAST FOR THEIR AREA. PEOPLE LIVING IN OR NEAR FLOOD PRONE AREAS SHOULD REMAIN ALERT TO RAPID WATER RISES. NEVER DRIVE INTO STANDING WATER. KUBINA
Special weather statement, Jun 24, 8:26 PM CDT, 1 hour 13 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 12 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, 32 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, 31 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
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, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 32 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.