Alert archive / Iowa / Flash Flood Warnings in 1990
Flash Flood Warning 22, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 19, 1990, 11:55 PM CDT for Marion County, Iowa. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1990, 11:55 PM CDT (04:55 UTC)
- Expired
- Jun 20, 1990, 4:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Marion 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, 4.9 hours before the alert went out and 273 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 200459
FFWDSM
IAC123-125-105-181-201100-
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1155 PM CDT TUE JUN 19 1990
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 600 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH CENTRAL IOWA
...MAHASKA...MARION
IN SOUTHEAST IOWA
...KEOKUK...WASHINGTON
3 TO 4 INCHES OF RAIN HAS FALLEN OVER MARION...MAHASKA...
KEOKUK...AND WASHINGTON COUNTIES SINCE 8 PM. THIS 4 COUNTY AREA STRETCHEFROM 20 MILES SOUTHEAST OF DES MOINES TO 40 MILES NORTHEAST OF OTTUMWA.
ALTHOUGH THE RAIN HAS JUST ABOUT ENDED...EXTREMELY SERIOUS FLOODING WILLCONTINUE THROUGHOUT THESE COUNTIES DURING THE NIGHT...AS THE RUNOFF
FROM THE HEAVY RAINS TRIES TO DRAIN INTO ALREADY FLOODED CREEKS.
WOLF CREEK NEAR WHAT CHEER WAS CAUSING DANGEROUS FLOODING OF A BRIDGE
ON HIGHWAY 21...AND OTHER SERIOUS FLOODING IS ALMOST CERTAINLY
OCCURRING OVER MANY COUNTY AND RURAL ROADS.
THIS WARNING INCLUDES THE CITIES OF PELLA...NEW SHARON...OSKALOOSA...
EDDYVILLE...WHAT CHEER...SIGOURNEY...KEOTA...RICHLAND...AND
WASHINGTON.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
TRUETTWhat forecasters said that day
The local office's own words before this flash flood 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, 9:46 PM CDT, 2 hours 9 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, 1 hour 55 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
Special weather statement, Jun 19, 10:19 PM CDT, 1 hour 36 minutes before
IAZALL-200400- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 1015 PM CDT TUE JUN 19 1990 ...TORNADO WATCH FOR EAST CENTRAL AND SOUTH IOWA UNTIL 1 AM... ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 3 AM... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... STRONG THUNDERSTORMS CONTINUED TO RUMBLE OVER SOUTHERN IOWA. AT 1005 PM ...A 25 MILE WIDE BAND OF THUNDERSTORMS WAS LOCATED FROM SOUTHEAST OF CRESTON NEAR LAMONI TO NORTHEAST OF OTTUMWA NEAR WASHINGTON. AN INTENSE STORM WAS LOCATED 50 MILES SOUTH OF DES MOINES...OR JUST NORTH OF LAMONI. HIGH WINDS...HAIL AND TORRENTIAL RAINS WILL OCCUR WITH THIS STORM. OTHER LARGE STORMS WERE LOCATED NEAR CHARITON...SOUTH OF KNOXVILLE NEAR MELCHER AND NORTHEAST OF OTTUMWA NEAR SIGOURNEY. EXTREMELY HEAVY RAINS WILL ACCOMPANY THE THUNDERSTORMS. THE STORMS DROPPED 3 INCHES OF RAIN NORTH OF OSKALOOSA AT NEW SHAR-ON THIS EVENING. ALL OF THE THUNDERSTORMS IN IOWA WERE MOVING EAST AT 30 MILES AN HOUR. DLF
Special weather statement, Jun 19, 10:22 PM CDT, 1 hour 33 minutes before
IAZ002-003-007-200500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1020 PM CDT TUE JUN 19 1990 THE SEVERE THUNDERSTORM WATCH FOR NORTHEAST IOWA THAT WAS IN EFFECT UNTIL MIDNIGHT CDT H/AS BEEN CANCELLED. ALSO THE FLASH FLOOD WATCH THAT WAS IN EFFECT TONIGHT HAS ALSO BEEN CANCELLED FOR NORTHEAST IOWA.
Special weather statement, Jun 19, 10:48 PM CDT, 1 hour 7 minutes before
IAZALL-200430- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 1045 PM CDT TUE JUN 19 1990 ...TORNADO WATCH FOR EAST CENTRAL AND SOUTH IOWA UNTIL 1 AM... ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 3 AM... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... THUNDERSTORMS WITH EXTREMELY HEAVY RAINS AND HAIL WERE OVER SOUTH CENTRAL AND SOUTHEAST IOWA. AT 1031 PM...INTENSE THUNDERSTORMS WERE LOCATED OVER SOUTH CENTRAL IOWA NORTH OF LAMONI AND IN THE SOUTHEAST SECTION...NORTHWEST OF BURLINGTON NEAR BRIGHTON. THESE STORMS WERE PART OF A 25 MILE WIDE BAND OF STRONG THUNDERSTORMS THAT EXTENDED FROM THE IOWA/MISSOQURI BORDER SOUTH OF CRESTON TO NORTH OF OTTUMWA THEN EAST TO WAPELLO...NORTH OF BURLINGTON. THE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. DLF
Special weather statement, Jun 19, 11:40 PM CDT, 15 minutes before
IAZALL-200530- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IOWA 1145 PM CDT TUE JUN 19 1990 ...TORNADO WATCH FOR EAST CENTRAL AND SOUTH IOWA UNTIL 1 AM... ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 3 AM... ...A FLASH FLOOD/FLOOD WATCH FOR EAST AND SOUTH IOWA TONIGHT... THUNDERSTORMS CONTINUED OVER THE FAR SOUTH CENTRAL AND SOUTHEAST COUNTIES. AT 1126 PM...AN INTENSE THUNDERSTORM WAS LOCATED OVER SOUTH CENTRAL IOWA...JUST SOUTH OF LAKE RATHBUN...NEAR SEYMOUR. EXTREMELY HEAVY RAINS ARE OCCURRING WITH STORM. THE STORM MAY ALSO PRODUCE HAIL AND STRONG WINDS. ANOTHER STRONG THUNDERSTORM WAS OVER THE EXTREME SOUTHEAST COUNTIES ...JUST WEST OF BURLINGTON. THIS STORM WAS ALSO PRODUCING EXTREMELY HEAVY RAINS. THESE STORMS WERE PART OF A 25 MILE WIDE BAND OF SCATTERED THUNDER- STORMS THAT EXTENDED FROM LAMONI TO EAST OF BURLINGTON. THE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. DLF
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, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 46 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 |
Nearby
Flash Flood Warnings in Iowa, 1990Every flash flood 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.