Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 86, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1990, 5:35 AM CDT for Boone County, Dallas County, Iowa. It was in force for 25 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1990, 5:35 AM CDT (10:35 UTC)
- Expired
- Jun 19, 1990, 6:00 AM CDT
- In force
- 25 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Boone County, IA, Dallas 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 00:00Z, 10.6 hours before the alert went out and 207 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
- 3604 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 281 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 191037
SVRDSM
IAC015-049-191115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
535 AM CDT TUE JUN 19 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL IOWA
...SOUTHERN BOONE...NORTHERN DALLAS
AT 530 AM RADAR INDICATED A SEVERE STORM IN SOUTHEAST GREEN COUNTY OR
ABOUT 40 MILES TO THE NORTHWEST OF DES MOINES.
THE STORM IS MOVING THE SOUTHEAST AT 30 MILES AN HOUR AND AND WILL BE
MOVING THROUGH THE PERRY...WOODWARD...BERKLEY AND LUTHER AREAS
BETWEEN 540 AM AND 605 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 W=ATER COVERS THE ROAD.
WEINBRECHT/SCOTTWhat 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, 3:44 AM CDT, 1 hour 51 minutes before
IAZALL-191000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 342 AM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST IOWA UNTIL 8AM... ...FLASH FLOOD WATCH FOR WESTERN HALF REST OF TONIGHT... AT 330 AM...INTENSE THUNDERSTORMS WERE LOCATED IN NORTHWEST IOWA. ONE STORM WAS INDICATED IN EASTERN PLYMOUTH COUNTY...20 MILES NORTHEAST OF SIOUX CITY. ANOTHER WAS LOCATED 8 MILES NORTH OF DENISON...OR ABOUT 85 MILES NORTHWEST OF DES MOINES. THE STORMS WILL LIKELY PRODUCE VERY HEAVY RAIN...SMALL HAIL AND WIND TO 50 MILES AN HOUR. OTHERWISE... SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED WEST OF A LINE FROM LAMONI...TO 15 MILES WEST OF DES MOINES...TO NEAR SPENCER IN THE FAR NORTHWEST SECTION OF THE STATE. SEVERE THUNDERSTORMS WERE MOVING OUT OF SOUTH DAKOTA AND MINNESOTA INTO THE NORTHWEST CORNER OF THE STATE. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. HUeTTON
Special weather statement, Jun 19, 3:45 AM CDT, 1 hour 50 minutes before
IAZALL-191000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 345 AM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST IOWA UNTIL 8AM... ...FLASH FLOOD WATCH FOR WESTERN HALF REST OF TONIGHT... AT 330 AM...INTENSE THUNDERSTORMS WERE LOCATED IN NORTHWEST IOWA. ONE STORM WAS INDICATED IN EASTERN PLYMOUTH COUNTY...20 MILES NORTHEAST OF SIOUX CITY. ANOTHER WAS LOCATED 8 MILES NORTH OF DENISON...OR ABOUT 85 MILES NORTHWEST OF DES MOINES. THE STORMS WILL LIKELY PRODUCE VERY HEAVY RAIN...SMALL HAIL AND WIND TO 50 MILES AN HOUR. OTHERWISE... SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED WEST OF A LINE FROM LAMONI...TO 15 MILES WEST OF DES MOINES...TO NEAR SPENCER IN THE FAR NORTHWEST SECTION OF THE STATE. SEVERE THUNDERSTORMS WERE MOVING OUT OF SOUTH DAKOTA AND MINNESOTA INTO THE NORTHWEST CORNER OF THE STATE. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. HUhTTON
Special weather statement, Jun 19, 4:14 AM CDT, 1 hour 21 minutes before
IAZALL-191000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 408 AM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHWEST IOWA UNTIL 8AM... ...FLASH FLOOD WATCH FOR WESTERN HALF REST OF TONIGHT... AT 405 AM...INTENSE THUNDERSTORMS WERE LOCATED IN NORTHWEST IOWA. ONE STORM WAS INDICATED ABOUT 10 MILES NORTHWEST OF CARROLL...OR ABOUT 70 MILES NORTHWEST OF DES MOINES. ANOTHER WAS INDICATED JUST SOUTHEAST OF CHEROKEE...OR ABOUT 40 MILES NORTHEAST OF SIOUX CITY. THE STORMS WILL LIKELY PRODUCE BRIEF...VERY HEAVY RAINFALL...SMALL HAIL AND WIND GUSTS OF 30 TO 50 MILES AN HOUR. ELSEWHERE...SCATTERED SHOWERS AND THUNDERSTORMS WERE LOCATED ACROSS THE} WESTERN HALF OF THE STATE...FROM 10 MILES EAST OF LAMONI...THROUGH DES MOINES...TO 40 MILES WEST OF MASON CITY. THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. HUTTON
Special weather statement, Jun 19, 4:44 AM CDT, 51 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
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, 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, 7:18 AM CDT | Severe Thunderstorm Warning | DMX | Marshall | 27 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.