Alert archive / Iowa / Flash Flood Warnings in 1986
Flash Flood Warning 7, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Sep 19, 1986, 1:00 AM CDT for Ringgold County, Iowa. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Sep 19, 1986, 1:00 AM CDT (06:00 UTC)
- Expired
- Sep 19, 1986, 4:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Ringgold 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, 6.0 hours before the alert went out and 190 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
- 3587 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 278 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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, Sep 18, 9:52 PM CDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 945 PM CDT THU SEP 18 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 2 AM CDT... ...FLASH FLOOD WATCH FOR WEST HALF OF IOWA TONIGHT... ...NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 900 PM AND 930 PM... AT 930 PM THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING IN CENTRAL AND SOUTH WEST IOWA. THEY WERE LOCATED 5 TO 10 MILES NORTHWEST OF KNOXVILLE ...MELCHER AND LUCAS...OR 25 MILES EAST...SOUTHEAST...AND SOUTH OF DES MOINES. THE OTHER STORMS WERE NEAR SIDNEY WHICH IS 45 MILES SOUTH OF OMAHA. RAINSHOWERS STRETCHED FROM DES MOINES TO MARSHALLTOWN IN CENTRAL IOWA AND FROM SPENCER TO MASON CITY IN THE NORTHWEST AND NORTH CENTRAL. THE STORMS AND SHOWERS WERE MOVING EAST AT 30 MILES AN HOUR. OBRIEN
Special weather statement, Sep 18, 10:55 PM CDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1055 PM CDT THU SEP 18 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 2 AM CDT... ...FLASH FLOOD WATCH FOR WEST HALF OF IOWA TONIGHT... ...NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 930 PM AND 1030 PM... AT 1030 PM THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING IN SOUTH CENTRAL AND SOUTH WEST IOWA. THE STRONGEST STRETCHED FROM OSKALOOSA TO CHARITON...OR 45 MILES EAST TO 45 MILES SOUTHEAST OF DES MOINES. OTHER STRONG STORMS WERE LOCATED NEAR ATLANTIC...SHENANDOAH AND AFTON. SHENANDOAH IS 40 MILES SOUTH OF OMAHA WHILE AFTON IS 40 MILES SOUTHWEST OF DES MOINES. RAINSHOWERS WERE LOCATED IN THE AREA BETWEEN RED ROCK LAKE...WATERLOO ...AND CEDAR RAPIDS. SHOWERS WERE ALSO OCCURRING IN THE NORTH CENTRAL. THEY WERE IN THE FORM OF A NARROW BAND THAT STRECTHED FROM EMMETSBURG ...70 MILES WEST OF MASON CITY...TO MASON CITY. MOST OF THE STORMS AND SHOWERS WERE MOVING EAST AT 30 MILES AN HOUR. THOSE LOCATED IN SOUTHWEST IOWA WERE MOVING NORTHEAST AT 30 MILES AN HOUR. OBRIEN
Special weather statement, Sep 18, 11:42 PM CDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1045 PM CDT THU SEP 18 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 2 AM CDT... ...FLASH FLOOD WATCH FOR WEST HALF OF IOWA TONIGHT... ..NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 1030 PM AND 1130 PM.. AT 1130 PM THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING IN SOUTH CENTRAL AND SOUTH WEST IOWA. THE STRONGEST WERE LOCATED BETWEEN OTTUMWA AND LAKE RATHBUN. OTHER STRONG STORMS STRETCHED FROM SHENANDOAH TO AFTON. SHENANDOAH IS 40 MILES SOUTH OF OMAHA WHILE AFTON IS 40 MILES SOUTHWEST OF DES MOINES. THUNDER AND RAINSHOWERS WERE LOCATED SOUTH OF THE SIOUX CITY...DES MOINES...DUBUQUE LINE. RAINSHOWERS WERE ALSO OCCURRING IN NORTH CENTRAL IOWA IN THE MASON CITY AREA. MOST OF THE STORMS AND SHOWERS WERE MOVING EAST AT 30 MILES AN HOUR. THOSE LOCATED IN SOUTHWEST IOWA WERE MOVING NORTHEAST AT 30 MILES AN HOUR.( OBRIEN
Special weather statement, Sep 19, 12:46 AM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1245 AM CDT FRI SEP 19 1986 ...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 2 AM CDT... ...FLASH FLOOD WATCH FOR WEST HALF OF IOWA TONIGHT... ..NO SEVERE WEATHER WAS REPORTED IN IOWA BETWEEN 1130 PM AND 1230 AM.. AT 1230 AM... THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING IN SOUTH CENTRAL...SOUTH WEST...AND A SMALL PART OF SOUTHEAST IOWA JUST SOUTH OF OTTUMWA. THE HEAVIEST PRECIPITATION WAS FALLING ALONG AND 20 MILES NORTH OF THE IOWA /MISSOURI BORDER BETWEEN SHENANDOAH AND OTTUMWA. THUNDER AND RAINSHOWERS WERE LOCATED SOUTH OF A SIOUX CITY...DES MOINES ...DU^BUQUE LINE. RAINSHOWERS WERE ALSO OCCURRING IN NORTH EAST IOWA NEAR CHARLES CITY...ABOUT 35 MILES EAST OF MASON CITY. MOST OF THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. SCOTT
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 20 min |
| Sep 18, 7:32 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 48 min |
| Sep 19, 8:06 AM CDT | Flash Flood Warning | DMX | Lucas | 4 hr |
Nearby
Flash Flood Warnings in Iowa, 1986Every flash flood warning in 1986
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.