Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 137, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 28, 1990, 2:13 PM CDT for Benton County, Iowa. It was in force for 47 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 28, 1990, 2:13 PM CDT (19:13 UTC)
- Expired
- Jun 28, 1990, 3:00 PM CDT
- In force
- 47 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Benton 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 |
|---|---|---|---|
| Jun 28, 2:47 PM CDT | Tornado F0 | Benton, 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
Minneapolis, MN (KSTC), launched 12:00Z, 7.2 hours before the alert went out and 332 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
- 102 J/kg
- Mixed-layer CIN
- -411 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 298 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 281913
SVRDSM
IAC011-282000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
213 PM CDT THU JUN 28 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL IOWA
...BENTON
AT 210 PM...WEATHER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
OVER TAMA COUNTY...ABOUT 30 MILES SOUTH-SOUTHWEST OF WATERLOO. WINDS
OF UP TO 60 MPH WERE REPORTED WITH THIS STORM AT 150 PM THIS
AFTERNOON.
THE STORM WAS MOVING SOUTHEAST AT 45 MILES AN HOUR...AND WILL BE
AFFECTING THE CITIES OF VINTON...GARRISON...AND MOUNT AUBURN.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
TRUETT/FERRYWhat 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 28, 10:50 AM CDT, 3 hours 23 minutes before
IAZALL-281630- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1045 AM CDT THU JUN 28 1990 AT 1040 AM...AN ISOLATED INTENSE THUNDERSTORM WAS OVER EXTREME NORTHWEST IOWA...ALONG THE IOWA-MINNESOTA BORDER JUST NORTHWEST OF ESTHERVILLE...OR ABOUT 30 MILES NORTHEAST OF SPENCER. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM AS IT MOVES SOUTHEAST AT 35 MILES AN HOUR. ELSEWHERE...THE SHOWERS IN SOUTHEAST aIOWA CONTINUED TO WEAKEN AND DISSIPATE. MOST OF THESE SHOWERS WERE BETWEEN OTTUMWA AND BURLINGTON. THESE SHOWERS WERE MOVING SOUTHEAST AT 25 TO 30 MILES AN HOUR. TRUETT/BARLOW
Special weather statement, Jun 28, 12:05 PM CDT, 2 hours 8 minutes before
IAZALL-281730- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1200 NOON CDT THU JUN 28 1990 AT 1155 AM...AN ISOLATED INTENSE THUNDERSTORM CONTINUED OVER NORTH CENTRAL IOWA...ABOUT 25 MILES WEST OF MASON CITY IN WESTERN HANCOCK COUNTY. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM AS IT MOVES SOUTHEAST AT 35 MILES AN HOUR. IN SOUTHEAST IOWA...THE SHOWERS HAD DISSIPATED. TRUETT/BARLOW
Special weather statement, Jun 28, 12:43 PM CDT, 1 hour 30 minutes before
IAZALL-281830- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1243 PM CDT THU JUN 28 1990 AT 1235 PM...A CLUSTER OF INTENSE THUNDERSTORMS WAS LOCATED OVER NORTH CENTRAL IOWA...BETWEEN BELMOND AND MASON CITY. BELMOND IS LOCATED 20 SOUTH SOUTHWEST OF MASON CITY. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM AS IT MOVES SOUTHEAST AT 45 MILES AN HOUR. PEOPLE IN THE PATH OF THIS STORM...IN THE CITIES OF SWALDALE...THORTON AND SHEFFIELD SHOULD TAKE SHELTER AS THIS CLUSTER OF STORMS APPROACHES. THIS COMPLEX OF STORMS WAS PART OF A LARGER AREA OF SHOWERS AND STORMS OVER NORTH CENTRAL AND NORTHEAST IOWA...GENERALLY NORTH AND EAST OF A LINE FROM SPEwNCER SOUTHEAST TO CLARION THEN NORTHEAST TO OELWEIN. BARLOW
Local storm report, Jun 28, 1:03 PM CDT, 1 hour 10 minutes before
LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE DES MOINES IA
105 PM CDT THU JUNE 28 1990
TIMES CDT
505 AM.....WIND TO 60 MPH NEAR PANORA. /GUTHRIE COUNTY.
907 AM.....GOLF BALL SIZE HAIL NEAR ADEL. /DALLAS COUNTY.
1055 AM....1 MILE VISIBILITY IN HEAVY RAIN...WIND GUST TO 48 MPH AT
AIRPORT IN ESTHERVILLE. /EMMET COUNTY.
1109 AM....VERY HEAVY RAIN...MARBLE SIZE HAIL AT ARMSTRONG. /EMMET
COUNTY.
1145 AM....PEAR SIZE HAIL AND 1 INCH OF RAIN IN 20 MINUTES AT BANCROFT.
/KOSSUTH COUNTY.
1215 PM....50 MPH WINDS AND MARBLE SIZE HAIL AT BELMOND. /WRIGHT
COUNTY.
1234 PM....WINDS ESTIMATED AT 59 MPH AT THE CLARION AIRPORT. /WRIGHT
COUNTY.
WHESpecial weather statement, Jun 28, 1:03 PM CDT, 1 hour 10 minutes before
IAZALL-281900- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 100 PM CDT THU JUN 28 1990 AT 100 PM...A CLUSTER OF INTENSE THUNDERSTORMS WAS LOCATED OVER NORTH CENTRAL IOWA...SOME 15 TO 35 MILES SOUTH AND SOUTHEAST OF MASON CITY. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM AS IT MOVES SOUTHEAST AT NEARLY 50 MILES AN HOUR. PEOPLE IN THE PATH OF THIS STORM IN THE CITIES OF ACKLEY AND IOWA FALLS SHOULD TAKE SHELTER AS THIS CLUSTER OF STORMS APPROACHES. THIS COMPLEX OF STORMS WAS PART OF A LARGER AREA OF SHOWERS AND STORMS OVER NORTH CENTRAL AND NORTHEAST IOWA...GENERALLY NORTH AND EAST OF A LINE FROM SPENCER SOUTHEAST TO CLARION THEN NORTHEAST TO OELWEIN. BARLOW
Special weather statement, Jun 28, 1:43 PM CDT, 30 minutes before
IAZALL-281935- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 135 PM CDT THU JUN 28 1990 INTENSE THUNDERSTORMS WERE LOCATED OVER PARTS OF NORTH CENTRAL AND NORTHEAST IOWA. AT 129 PM...THE THUNDERSTORMS WERE LOCATED FROM 40 MILES SOUTHWEST OF WATERLOO NEAR ELDORA TO 25 MILES WEST OF WATERLOO. HIGH WINDS...HAIL...AND EXTREMELY HEAVY RAINS WILL OCCUR WITH THESE STORMS. THE STORM WAS MOVING SOUTHEAST AT 50 MILES AN HOUR. BY 2 PM THESE STORMS WILL BE LOCATED FROM JUST SOUTH OF WATERLOO TO NEAR MARSHALLTOWN. SCATTERED SHOWERS AND THUNDERSTORMS WERE ALSO OCCURRING OVER NORTH CENTRAL AND NORTHEAST IOWA...NORTHEAST OF A WATERLOO...MASON CITY LINE. CAB/DLF
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 1:12 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 63 min |
| Jun 28, 1:37 AM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 68 min |
| Jun 28, 1:53 AM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 67 min |
| Jun 28, 2:11 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 64 min |
| Jun 28, 2:11 AM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 64 min |
| Jun 28, 2:24 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 66 min |
| Jun 28, 2:52 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 68 min |
| Jun 28, 4:23 AM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 52 min |
| Jun 28, 5:10 AM CDT | Severe Thunderstorm Warning | DMX | Dallas | 35 min |
| Jun 28, 7:06 AM CDT | Severe Thunderstorm Warning | DMX | Monroe | 32 min |
| Jun 28, 10:32 AM CDT | Severe Thunderstorm Warning | DMX | Emmet | 43 min |
| Jun 28, 11:02 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 43 min |
| Jun 28, 11:40 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Winnebago | 50 min |
| Jun 28, 11:43 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 32 min |
| Jun 28, 12:15 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 30 min |
| Jun 28, 12:24 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin | 51 min |
| Jun 28, 1:09 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 51 min |
| Jun 28, 1:09 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 26 min |
| Jun 28, 1:09 PM CDT | Tornado Warning | DMX | Hardin | 36 min |
| Jun 28, 1:26 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 54 min |
| Jun 28, 1:42 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 48 min |
| Jun 28, 1:44 PM CDT | Tornado Warning | DMX | Hardin | 31 min |
| Jun 28, 1:56 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Tama | 30 min |
| Jun 28, 2:23 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 37 min |
| Jun 28, 2:51 PM CDT | Tornado Warning | DMX | Iowa | 39 min |
| Jun 28, 2:51 PM CDT | Tornado Warning | DMX | Benton | 23 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning in 1990
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.