Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 85, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1990, 4:39 AM CDT for Clay County, Emmet County, Iowa. It was in force for 31 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1990, 4:39 AM CDT (09:39 UTC)
- Expired
- Jun 19, 1990, 5:10 AM CDT
- In force
- 31 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Clay County, IA, Emmet 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
Minneapolis, MN (KSTC), launched 00:00Z, 9.7 hours before the alert went out and 208 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
- 419 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 1506 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 190941
SVRDSM
IAC041-063-191030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
439 AM CDT TUE JUN 19 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHWEST IOWA
...CLAY...EMMET
AT 435 AM RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS IN
DICKINSON COUNTY OR ABOUT 15 MILES TO THE NORTH OF SPENCER.
THE STORMS ARE MOVING TO THE SOUTHEAST AT 40 MILES AN HOUR AND WILL BE
MOVING INTO THE ESTERVILLE AND SPENCER AREAS BETWEEN 443 AM AND 5 AM.
AT 425 AM WINDS TO 60 MILES AN HOUR OCCURRED AT ARNOLDS PARK IN
DICKINSON COUNTY.
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 18, 10:39 PM CDT, 6 hours before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1040 PM CDT MON JUN 18 1990 ...SEVERE THUNDERSTORM WATCH FOR EXTREME SOUTHWEST IOWA UNTIL 1 AM... ...FLASH FLOOD WATCH FOR WESTERN TWO-THIRDS OF IOWA TONIGHT... AT 1030 PM...SHOWERS AND A FEW THUNDERSTORMS CONTINUED OVER SOUTHWEST AND SOUTH CENTRAL IOWA...SOUTH OF A SIOUX CITY...DES MOINES...OTTUMWA LINE. THE STRONGEST STORMS WERE ALONG THE MISSOURI RIVER...FROM 40 MILES NORTH OF COUNCIL BLUFFS TO 20 MILES NORTHEAST OF COUNCIL BLUFFS. ELSEWHERE IN THE STATE...THE SHOWERS WERE ON THE LIGHT SIDE. THE SHOWERS AND STORMS WERE MOVING EAST AT 30 MILES AN HOUR. FERRY/TRUETT
Special weather statement, Jun 18, 11:03 PM CDT, 5 hours 36 minutes before
IAZ009-012-190530- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1103 PM CDT MON JUN 18 1990 THE SEVERE THUNDERSTORM WATCH THAT HAD BEEN IN EFFECT FOR EXTREME SOUTHWEST IOWA IS CANCELLED EFFECTIVE IMMEDIATELY. THE FOLLOWING COUNTIES ARE NO LONGER IN THE SEVERE THUNDERSTORM WATCH: HARRISON MONTGOMERY SHELBY ADAMS POTTAWATTAMIE FREMONT MILLS PAGE CASS TAYLOR THE FLASH FLOOD WATCH FOR THE WESTERN HALF OF IOWA TONIGHT REMAINS IN EFFECT. BIKLE
Special weather statement, Jun 19, 3:44 AM CDT, 55 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, 54 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, 25 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
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, 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, 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.