Alert archive / Iowa / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 98, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1990, 10:14 PM CDT for Warren County, Iowa. It was in force for 46 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1990, 10:14 PM CDT (03:14 UTC)
- Expired
- Jun 19, 1990, 11:00 PM CDT
- In force
- 46 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Warren 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, 3.2 hours before the alert went out and 235 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
- 3628 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- 74 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 200325
SVRDSM
IAC181-200400-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1014 PM CDT TUE JUN 19 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST IOWA
...EASTERN WASHINGTON
AT 1020 PM RADAR INDICATED A SEVERE THUNDERSTORM IN EASTERN WASHINGTON
COUNTY...ABOUT 45 MILES NORTHEAST OF OTTUMWA. THE STORM WAS MOVING
EAST AT 30 MPH.
TOWNS TO BE AFFECTED INCLUDE WASHINGTON...AINSWORTH AND
CRAWFORDSVILLE.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. MOVE TO THE CENTER OF YOUR
HOUSE...STAY AWAY FROM WINDOWS...AND BE READY TO ACT QUICKLY IF A
TORNADO DEVELOPS.
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.
MARTIN/ELLIS/FO6RSTERWhat 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, 7:40 PM CDT, 2 hours 34 minutes before
IAZALL-200130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 740 PM CDT TUE JUN 19 1990 ...A TORNADO WATCH IS IN EFFECT FOR THE WEST HALF OF IOWA UNTIL 10 PM CDT THIS TUESDAY EVENING... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR ABOUT THE NORTHEAST ONE QUARTER OF IOWA... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... AT 730 PM CDT...SCATTERED INTENSE THUNDERSTORMS CONTINUED IN A 25 MILE WIDE AREA...FROM 15 MILES WEST SOUTHWEST OF DES MOINES TO 15 MILES NORTHEAST OF OTTUMWA. THE MOST INTENSE STORMS WERE LOCATED FROM JUST NORTHWEST OF WINTERSET TO JUST NORTH OF INDIANOLA ...AND JUST NORTH OF OTTUMWA. SEVERAL INTENSE STORMS WERE LOCATED ABOUT 10 MILES NORTHEAST OF DES MOINES...BETWEEN DES MOINES AND NEWTON. . SHOULD THREATENING WEATHER APPROACH...PEOPLE IN THE PATH OF THESE STORMS SHOULD SEEK SHELTER IMMEDIATELY. THESE STORMS WERE PRODUCING EXCESSIVE RWAINFALL...FREQUENT DANGEROUS LIGHTNING...AND COULD PRODUCE BRIEF STRONG GUSTY WIND. ALL THE STORMS WERE MOVING EAST AT 25 MILES AN HOUR. GGF
Special weather statement, Jun 19, 8:12 PM CDT, 2 hours 2 minutes before
IAZ002-003-007-200200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 810 PM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH UNTIL MIDNIGHT CDT... ...FLASH FLOOD WATCH ALL OF TONIGHT... AT 805 PM CDT SHOWERS WERE OCCURRING OVER NORTHCENTRAL AND NORTHEAST IOWA GENERALLY NORTH OF HIGHWAY 18. STRONG THUNDERSTORMS WERE LOCATED IN SOUTHERN AND SOUTHEAST MINNESOTA. ALL PRECIPITATION WAS MOVING EAST AND SOUTHEAST AT 20 MILES AN HOUR. THE STRONG THUNDERSTORMS IN MINNESOTA SHOULD BE REACHING THE IOWA BORDER BY 830 OR 900 PM CDT AND CONTINUE MOVING EAST AND SOUTHEAST AROUND 20 MILES AN HOUR. JOHNSON
Special weather statement, Jun 19, 8:13 PM CDT, 2 hours 1 minute before
IAZALL-200200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IOWA 810 PM CDT TUE JUN 19 1990 ...A TORNADO WATCH IS IN EFFECT FOR THE WEST HALF OF IOWA UNTIL 10 PM CDT THIS TUESDAY EVENING... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR ABOUT THE NORTHEAST ONE QUARTER OF IOWA... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... AT 800 PM CDT...A NARROW BAND OF INTENSE THUNDERSTORMS WAS INDICATED OVER SOUTH CENTRAL IOWA. THE THUNDERSTORMS EXTENDED FROM 7 MILES SOUTH OF DES MOINES TO OSKALOOSA...20 MILES NORTHWEST OF OTTUMWA. THE LARGEST STORM WAS NORTH OF KNOXVILLE OVER RED ROCK LAKE. THE STORMS IN THIS BAND WILL PRODUCE EXTREMELY HEAVY RAINS. LOW LYING AREAS IN THE VICINITY OF THE STORMS WILL FLOOD QUICKLY. DO NOT DRIVE ACROSS FLOODED HIGHWAYS...ONLY A FEW INCHES OF FAST RUNNING WATER WILL SWEEP AWAY A VEHICLE. ALSO THESE STORMS MAY PRODUCE HIGH WINDS AND HAIL. THE STORMS WERE MOVING EAST AT 25 MILES AN HOUR. DLF
Special weather statement, Jun 19, 8:53 PM CDT, 1 hour 21 minutes before
IAZALL-200245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IOWA 850 PM CDT TUE JUN 19 1990 ...A TORNADO WATCH IS IN EFFECT FOR THE WEST HALF OF IOWA UNTIL 10 PM CDT THIS TUESDAY EVENING... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR ABOUT THE NORTHEAST ONE QUARTER OF IOWA... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... AT 830 PM CDT...AN INTENSE THUNDERSTORM WAS INDICATED OVER SOUTH CENTRAL IOWA...OVER AND JUST TO THE NORTH OF PELLA. HIGH WINDS...HAIL AND TORRENTIAL RAINS ARE LIKELY FROM THIS STORM. THE STORM WAS MOVING EAST AT 25 MILES AN HOUR AND WILL BE LOCATED IN SOUTHEAST IOWA NEAR WHAT CHEER BY 930 PM. THIS STORM WAS PART OF A NARROW BAND OF STRONG THUNDERSTORMS THAT WAS LOCATED FROM 7 MILES SOUTH OF DES MOINES EAST TO SIGOURNEY... 20 MILES NORTHEAST OF OTTUMWA. THESE STORMS WERE ALSO MOVING EAST AT 25 MILES AN HOUR. THEY WERE ALSO PRODUCING EXTREMELY HEAVY RAINS. OTHER STRONG STORMS WERE OVER EXTREME NORTH CENTRAL AND NORTHEAST IOWA FROM THE MINNESOTA BORDER NORTH OF MASON CITY TO NEAR DECORAH. DLF
Special weather statement, Jun 19, 9:46 PM CDT, 28 minutes before
IAZALL-200345- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 945 PM CDT TUE JUN 19 1990 ...A TORNADO WATCH IS IN EFFECT FOR THE WEST HALF OF IOWA UNTIL 10 PM CDT THIS TUESDAY EVENING... ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT FOR ABOUT THE NORTHEAST ONE QUARTER OF IOWA... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... AT 926 PM CDT...THUNDERSTORMS HAD DEVELOPED RAPIDLY OVER SOUTHWEST AND SOUTH CENTRAL IOWA FROM SOUTHEAST OF SHENANDOAH NEAR BEDFORD TO SOUTH OF DES MOINES NEAR OSCEOLA. THE LARGEST STORMS WERE LOCATED NEAR DIAGONAL...10 MILES SOUTH OF CRESTON AND 10 MILES WEST OF OSCEOLA. THESE STORMS WILL PRODUCE EXTREMELY HEAVY RAINS AND HAIL. STRONG THUNDERSTORMS WERE ALSO OVER THE SOUTHEAST COUNTIES. THESE STORMS WERE IN A 25 MILE WIDE BAND LOCATED FROM PELLA...35 MILES SOUTHEAST OF DES MOINES TO WAPPELLO...30 MILES NORTH OF BURLINGTON. THE LARGEST STORM IN THIS AREA WAS LOCATED 15 MILES NORTH OF OTTUMWA NEAR SIGOURNEY. ALL OF THE THUNDERSTORMS IN IOWA WERE MOVING EAST AT 25 MILES AN HOUR. DLF
Special weather statement, Jun 19, 10:00 PM CDT, 14 minutes before
IAZ003-007-008-200320- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1000 PM CDT TUE JUN 19 1990 ...SEVERE THUNDERSTORM WATCH FOR NORTHEAST IOWA HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH FOR NORTHEAST IOWA IS NO LONGER IN EFFECT. ALTHOUGH A FEW THUNDERSTORMS ARE POSSIBLE IN NORTHEAST IOWA...THEY ARE NOT EXPECTED TO BE SEVERE. TRUETT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 7:04 PM CDT | Flash Flood Warning | DMX | Marion, Warren | 5 hr |
| Jun 19, 7:04 PM CDT | Flash Flood Warning | DMX | Madison | 5 hr |
| Jun 19, 8:05 PM CDT | Flash Flood Warning | DMX | Keokuk, Mahaska | 4 hr |
| Jun 19, 8:05 PM CDT | Flash Flood Warning | DMX | Washington | 4 hr |
| Jun 19, 8:11 PM CDT | Severe Thunderstorm Warning | DMX | Jones | 49 min |
| Jun 19, 8:11 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 49 min |
| Jun 19, 8:38 PM CDT | Flash Flood Warning | DMX | Appanoose, Davis, Monroe, Wapello | 7 hr |
| Jun 19, 8:38 PM CDT | Flash Flood Warning | DMX | Jefferson, Van Buren | 7 hr |
| Jun 19, 8:45 PM CDT | Tornado Warning | DMX | Marion | 30 min |
| Jun 19, 8:48 PM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 42 min |
| Jun 19, 9:00 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Union | 45 min |
| Jun 19, 9:12 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 48 min |
| Jun 19, 9:13 PM CDT | Severe Thunderstorm Warning | DMX | Keokuk, Mahaska | 62 min |
| Jun 19, 9:15 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 30 min |
| Jun 19, 9:19 PM CDT | Flash Flood Warning | DMX | Clarke, Decatur, Lucas, Wayne | 5 hr |
| Jun 19, 9:19 PM CDT | Flash Flood Warning | DMX | Ringgold, Union | 5 hr |
| Jun 19, 9:42 PM CDT | Tornado Warning | DMX | Decatur, Ringgold | 48 min |
| Jun 19, 10:23 PM CDT | Tornado Warning | DMX | Decatur | 37 min |
| Jun 19, 10:52 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 33 min |
| Jun 19, 11:31 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 29 min |
| Jun 19, 11:55 PM CDT | Flash Flood Warning | DMX | Keokuk, Washington | 6 hr |
| Jun 19, 11:55 PM CDT | Flash Flood Warning | DMX | Mahaska | 6 hr |
| Jun 19, 11:55 PM CDT | Flash Flood Warning | DMX | Marion | 4 hr |
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.