Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 68, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 13, 1990, 9:27 PM CDT for Adair County, Cass County, Iowa. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jun 13, 1990, 9:27 PM CDT (02:27 UTC)
- Expired
- Jun 13, 1990, 10:30 PM CDT
- In force
- 63 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Adair County, IA, Cass 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, 2.5 hours before the alert went out and 139 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
- 3606 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 113 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 140228
SVRDSM
IAC001-029-140330-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
927 PM CDT WED JUN 13 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST IOWA
...ADAIR...EASTERN CASS
AT 925 PM...A SEVERE THUNDERSTORM WAS INDICATED NEAR CUMBERLAND OR 60
MILES WEST OF DES MOINES IN WEST CENTRAL IOWA. THE STORM WAS MOVING
EAST AROUND 20 MPH AND SHOULD MOVE INTO THE TOWNS
BRIDGEWATER...ADAIR..FONTANELLE AND GREENFIELD.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
THIS STORM CAN PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING.
JMWhat 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 13, 6:11 PM CDT, 3 hours 16 minutes before
IAZALL-140000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 610 PM CDT WED JUN 13 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM THIS WEDNESDAY EVENING FOR MUCH OF THE SOUTHEAST HALF OF IOWA... AT 600 PM CDT...THERE WAS RAPID DEVELOPMENT OF INTENSE THUNDERSTORMS OVER SOUTHWEST IOWA SINCE 530 PM...THEY WERE LOCATED BETWEEN MALVERN AND SIDNEY...OR ABOUT 35 MILES SOUTHEAST OF COUNCIL BLUFFS. THIS STORM WAS MOVING NORTHEAST AT 25 MILES AN HOUR. THIS INTENSE STORM...ALONG WITH VERY LARGE AMOUNTS OF RAINFALL AND FREQUENT DANGEROUS LIGHTNING...COULD ALSO PRODUCE STRONG GUSTY WIND AND POSSIBLY SOME SMALL HAIL. OVER EXTREME SOUTHEAST IOWA...ANOTHER INTENSE STORM EXTENDED FROM NEAR BURLINGTON...ON SOUTHWEST INTO NORTHEAST MISSOURI. THIS STORM WAS ALSO MOVING NORTHEAST AT 25 MILES A HOUR. OVER THE REMAINDER OF IOWA...ISOLATED THUNDERSTORMS CONTINUED OVER ABOUT THE EAST HALF OF THE STATE. WPM/KAS
Special weather statement, Jun 13, 6:44 PM CDT, 2 hours 43 minutes before
IAZALL-140030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 644 PM CDT WED JUN 13 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM THIS WEDNESDAY EVENING FOR MUCH OF THE SOUTHEAST HALF OF IOWA... AT 630 PM CDT...INTENSE THUNDERSTORMS WERE LOCATED OVER SOUTHWEST AND EXTREME NORTHEAST IOWA. OVER SOUTHWEST IOWA...AN INTENSE STORM WAS LOCATED NEAR LEWIS...OR 40 MILES EAST OF COUNCIL BLUFFS. IN EXTREME NORTHEAST IOWA...THE INTENSE STORM WAS LOCATED NEAR ELKADER OR ABOUT 45 MILES NORTHWEST OF DUBUQUE. THESE STORMS...ALONG WITH VERY LARGE AMOUNTS OF RAINFALL AND FREQUENT DANGEROUS LIGHTNING...COULD ALSO PRODUCE STRONG GUSTY WIND AND POSSIBLY SOME SMALL HAIL. PEOPLE IN THESE AREAS SHOULD BE PREPARED TO SEEK SHELTER IMMEDIATELY IF THRETENING WEATHER APPROACHES. OVER SOUTHEAST IOWA...NUMEROUS THUNDERSTORMS CONTINUED..AND WERE MOSTLY SOUTH OF A LINE...EXTENDING FROM NEAR DAVENPORT/MOLINE...TO THE IOWA/MISSOURI BORDER SOUTH OF OTTUMWA. WPM/KAS
Special weather statement, Jun 13, 6:49 PM CDT, 2 hours 38 minutes before
IAZALL-140030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...COR LAST PARA... NATIONAL WEATHER SERVICE DES MOINES IA 644 PM CDT WED JUN 13 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM THIS WEDNESDAY EVENING FOR MUCH OF THE SOUTHEAST HALF OF IOWA... AT 630 PM CDT...INTENSE THUNDERSTORMS WERE LOCATED OVER SOUTHWEST AND EXTREME NORTHEAST IOWA. OVER SOUTHWEST IOWA...AN INTENSE STORM WAS LOCATED NEAR LEWIS...OR 40 MILES EAST OF COUNCIL BLUFFS. IN EXTREME NORTHEAST IOWA...THE INTENSE STORM WAS LOCATED NEAR ELKADER OR ABOUT 45 MILES NORTHWEST OF DUBUQUE. THESE STORMS...ALONG WITH VERY LARGE AMOUNTS OF RAINFALL AND FREQUENT DANGEROUS LIGHTNING...COULD ALSO PRODUCE STRONG GUSTY WIND AND POSSIBLY SOME SMALL HAIL. PEOPLE IN THESE AREAS SHOULD BE PREPARED TO SEEK SHELTER IMMEDIATELY IF THRETENING WEATHER APPROACHES. OVER SOUTHEAST IOWA...NUMEROUS THUNDERSTORMS CONTINUED..AND WERE MOSTLY SOUTH OF A LINE...EXTENDING FROM NEAR DAVENPORT/MOLINE...TO THE IOWA/MISSOURI BORDER SOUTH OF OTTUMWA. ALL THE STORMS IN IOWA WERE MOVING NORTHEAST AT 25 MILES AN HOUR. WPM/KAS
Special weather statement, Jun 13, 7:08 PM CDT, 2 hours 19 minutes before
IAZALL-140100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 705 PM CDT WED JUN 13 1990 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM THIS WEDNESDAY EVENING FOR MUCH OF THE SOUTHEAST HALF OF IOWA... AT 700 PM...AN ISOLATED INTENSE THUNDERSTORM WAS OVER SOUTHWEST IOWA ...15 MILES SOUTHEAST OF OMAHA/COUNCIL BLUFFS. ALONG WITH THE EXTREME RAINS...BRIEF STRONG GUSTY WINDS AND POSSIBLY SOME SMALL HAIL ARE LIKELY. THIS STORM SHOULD MOVE INTO THE ATLANTIC AREA BY 8 PM. ALSO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE FAR SOUTHEAST AND EAST CENTRAL COUNTIES. THE STRONG STORMS IN THE NORTHEAST WERE CROSSING THE MISSISSIPPI AND MOVING INTO SOUTHWEST &WISCONSIN. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. KS
Special weather statement, Jun 13, 7:57 PM CDT, 1 hour 30 minutes before
IAZALL-140130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 755 PM CDT WED JUN 14 1990 ...TORNADO WATCH NUMBER 457 CANCELLED... THE TORNADO WATCH THAT HAD BEEN IN EFFECT FOR THE SOUTHEAST HALF OF IOWA HAS BEEN CANCELLED. SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED ACROSS THE SOUTHEAST HALF OF IOWA AT 745PM. SOME OF THESE THUNDERSTORMS MAY CONTAIN BRIEF HEAVY RAIN...STRONG GUSTY WINDS AND SMALL HAIL. HOWEVER...THESE STORMS ARE NO LONGER SEVERE...AND THE SEVERE WEATHER NO LONGER APPEARS LIKELY. ELLIS
Special weather statement, Jun 13, 8:46 PM CDT, 41 minutes before
IAZALL-140230- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 840 PM CDT WED JUN 13 1990 ...TORNADO WATCH FOR SOUTHERN IOWA UNTIL 2 AM THURSDAY MORNING... AT 833 PM...AN ISOLATED INTENSE THUNDERSTORM WAS OVER THE FAR SOUTHWEST CORNER OF IOWA...JUST NORTHEAST OF SIDNEY. THE STORM HAD DEVELOPED RAPIDLY AND IS PRODUCING EXTREME RAINS...PROBABLY STRONG WINDS AND SOME HAIL. WIDELY SCATTERED SHOWERS AND THUNDERSBTORMS WERE ACROSS THE SOUTHERN AND WEST CENTRAL COUNTIES...ALONG OR SOUTH OF A LINE FROM OMAHA/COUNCIL BLUFFS THROUGH COON RAPIDS AND DES MOINES TO BURLINGTON. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR. KS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 10:10 PM CDT | Tornado Warning | DMX | Union | 50 min |
| Jun 13, 10:10 PM CDT | Tornado Warning | DMX | Adair, Adams | 20 min |
| Jun 13, 10:50 PM CDT | Tornado Warning | DMX | Union | 40 min |
| Jun 13, 10:53 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 67 min |
| Jun 13, 11:27 PM CDT | Tornado Warning | DMX | Polk | 33 min |
| Jun 14, 12:33 AM CDT | Tornado Warning | DMX | Jasper | 42 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.