Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 89, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1990, 7:18 AM CDT for Marshall County, Iowa. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1990, 7:18 AM CDT (12:18 UTC)
- Expired
- Jun 19, 1990, 7:45 AM CDT
- In force
- 27 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Marshall County, IA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 0.3 hours before the alert went out and 291 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
- 3669 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 605 m²/s²
- 0-3 km storm-relative helicity
- 914 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 191220
SVRDSM
IAC127-191245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
718 AM CDT TUE JUN 19 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN CENTRAL IOWA
...MARSHALL
AT 715 AM CDT RADAR INDICATED A SEVERE STORM IN EASTERN STORY COUNTY
OR ABOUT 15 MILES TO THE EAST OF AMES.
THE STORM WAS MOVING TO THE SOUTHEAST AT 40 MILES AN HOUR AND WILL BE
MOVING INTO THE MARSHALLTOWN AND STATE CENTER AREA BETWEEN 720 AM AND
AND 740 AM.
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.
WEINBRECHTWhat 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 19, 4:44 AM CDT, 2 hours 34 minutes before
IAZALL-191000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 443 AM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST IOWA UNTIL 8AM... ...FLASH FLOOD/FLOOD WATCH ENTIRE STATE TODAY... AT 427 AM...INTENSE THUNDERSTORMS WERE LOCATED IN WEST CENTRAL AND NORTHWEST IOWA. ON STORM WAS NEAR CARROLL...OR ABOUT 65 MILES NORTHWEST OF DES MOINES. ANOTHER WAS LOCATED IN FAR NORTHWEST IOWA....IN WESTERN O BRIEN COUNTY...OR ABOUT 45 MILES NORTHEAST OF SIOUX CITY. THESE STORMS WILL LIKELY PRODUCE BRIEF HEAVY RAIN...HAIL...AND GUSTY WIND OF 30 TO 50 MILES AN HOUR. OTHERWISE...SCATTERED SHOWERS AND THUNDERSTORMS WERE INDICATED WEST OF A LINE FROM 30 MILES SOUTHWEST OF OTTUMWA... THROUGH DES MOINES TO NEAR FORT DODGE...AND NORTH TO 20 MILES NORTHWEST OF MASON CITY. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. HUTTON
Special weather statement, Jun 19, 5:57 AM CDT, 1 hour 21 minutes before
IAZALL-191145- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 555 AM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST IOWA UNTIL 8AM... ...FLASH FLOOD/FLOOD WATCH ENTIRE STATE TODAY... AT 535 AM...INTENSE THUNDERSTORMS WERE LOCATED OVER NORTHWEST AND PARTS OF CENTRAL IOWA. A CLUSTER OF INTENSE STORMS WERE LOCATED NEAR ALGONA ...LAURENS...AND STORM LAKE IN THE NORTHWEST IOWA. ANOTHER ISOLATED INTENSE THUNDERSTORM WAS LOCATED ABOUT 40 MILES NORTHWEST OF DES MOINES JUST NORTH OF PERRY. THESE STORMS ARE LIKELY TO PRODUCE STRONG WINDS IN EXCESS OF 40 MPH... SMALL HAIL...AND HEAVY RAINS. THE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEASTN AT 30 MILES AN HOUR. MCQUIRTER HUTTON
Special weather statement, Jun 19, 6:01 AM CDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WETHER SERVICE DES MOINES IA 558 AM CDT TUE JUN 19 1990 AT 555 AM RADAR INDICATED A LINE OF STRONG THUNDERSTORMS THAT EXTENDED FROM 30 MILES TO THE NORTHWEST OF FORT DODGE TO ABOUT 25 MILES TO THE WEST OF FORT DODGE NEAR POMEROY. THIS LINE WAS MOVING TO THE SOUTHEAST AT 40 MILES AN HOUR AND WILL GO THROUGH THE FORT DODGE AREA BETWEEN 615AM AND 635 AM. WINDS OF 50 TO 55 MILES AN HOUR...HEAVY RAINS AND PEA TO MTARBLE SIZE CAN BE EXPECTED WITH THE PASSAGE OF THESE STORMS. THESE HEAVY RAINS MAY CAUSE SOME STREET FLOODING IN THE FORT DODGE AREA. WEINBRECHT
Special weather statement, Jun 19, 6:18 AM CDT, 1 hour before
IAZ001-004-005-191200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 615 AM CDT TUE JUN 19 1990 THE SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHWEST IOWA HAS BEEN CANCELLED. ALTcHOUGH SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE IN THE AREA UNTIL AT LEAST 9 AM...THESE THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE. WEINBRECHT
Special weather statement, Jun 19, 6:49 AM CDT, 29 minutes before
IAZALL-191245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 648 AM CDT TUE JUN 19 1990 ...FLASH FLOOD/FLOOD WATCH FOR THE ENTIRE STATE TODAY... AT 630 AM CDT...INTENSE THUNDERSTORMS WERE LOCATED IN A 20 MILE WIDE BAND FROM CLARION...20 MILES NORTHEAST OF FORT DODGE TO 50 MILES NORTHWEST OF DES MOINES. THE STORMS WERE RACING SOUTHEAST AT 45 TO 50 MILES AN HOUR. WINDS IN EXCESS OF 60 MILES AN HOUR...SMALL yHAIL...AND HEAVY RAINS ARE LIKELY WITH THESE STORMS. SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER NORTHWEST HALF OF THE STATE. THE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 50 MILES AN HOUR. JM
Special weather statement, Jun 19, 7:17 AM CDT, 1 minute before
IAZALL-191300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 715 AM CDT TUE JUN 19 1990 ...FLASH FLOOD/FLOOD WATCH FOR THE ENTIRE STATE TODAY... AT 710 AM...INTENSE THUNDERSTORMS WERE LOCATED OVER CENTRAL AND NORTH CENTRAL IOWA. THE HEAVIEST STORM WAS LOCATED ABOUT 30 MILES NORTHEAST OF DES MOINES BETWEEN NEVADA AND MARSHALLTOWN. WINDS IN EXCESS OF 60 MILES AN HOUR...SMALL HAIL...AND HEAVY RAINS ARE LIKELY WITH THIS STORM. SCATTERED STRONG THUNDERSTORMS WERE OVER PARTS OF WEST CENTRAL IOWA. THESE STORMS WERE CONFINED WEBSTER CITY...CARROLL AND WITHIN 25 MILES NORTHWEST OF DES MOINES. THE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHEAST AT 45 TO 50 MILES AN HOUR. JM/SCOTT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 4:22 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 28 min |
| Jun 19, 4:39 AM CDT | Severe Thunderstorm Warning | DMX | Clay, Emmet | 31 min |
| Jun 19, 5:35 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas | 25 min |
| Jun 19, 6:30 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton | 30 min |
| Jun 19, 6:55 AM CDT | Severe Thunderstorm Warning | DMX | Hardin, Story | 25 min |
| Jun 19, 9:50 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe | 55 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; the sounding from the Mesonet's radiosonde archive.