Alert archive / Iowa / Flash Flood Warnings in 1992
Flash Flood Warning 5, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 30, 1992, 2:49 AM CDT for Warren County, Iowa. It was in force for 116 min.
The area
The counties it named.
The facts
- Issued
- Jul 30, 1992, 2:49 AM CDT (07:49 UTC)
- Expired
- Jul 30, 1992, 4:45 AM CDT
- In force
- 116 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Warren County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 7.8 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
- 2191 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 729 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 9.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 300750 FFWDSM IAC181-300945- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 249 AM CDT THU JUL 30 1992 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 445 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL IOWA ...WARREN COUNTY AT 244 AM CDT...THE WARREN COUNTY SHERIFF REPORTED WATER ACROSS HIGHWAY 5...2 MILES EAST OF CARLISLE...OR ABOUT 14 MILES SOUTHEAST OF DES MOINES. SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL CONTINIUE MOVING ACROSS THE WARREN COUNTY AREA THROUGH SUNRISE. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED...ACT QUICKLY. MOVE UP TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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. BURKE
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, Jul 29, 10:45 PM CDT, 4 hours 4 minutes before
IAZALL-300440- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1040 PM CDT WED JUL 29 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR A SMALL PART OF SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 1 AM CDT THURSDAY MORNING... AT 1029 PM CDT...ISOLATED INTENSE THUNDERSTORMS CONTINUED OVER SOUTH- WEST AND SOUTH CENTRAL IOWA. THESE STORMS WERE LOCATED 30 TO 40 MILES SOUTHEAST OF COUNCIL BLUFFS...BETWEEN RED OAK AND SHENANDOAH...AND 60 MILES SOUTH OF DE MOINES...NEAR LAMONI. THESE STORMS WERE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WIND...DANGEROUS LIGHTNING...AND HEAVY DOWNPOURS. ALSO...SINCE THESE STORMS HAVE BEEN MOVING OVER THE SAME AREA FOR MORE THAN 2 HOURS...FLOODING OF STREAMS AND LOW LYING AREAS COULD OCCUR. PERSONS IN THE PATH OF THESE STORMS SHOULD SEEK SHELTER AS THESE COULD BE DANGEROUS STORMS. / ALSO...ISOLATED THUNDERSHOWERS AND SHOWERS WERE OVER CENTRAL AND SOUTHEAST IOWA...SOUTH OF zA COON RAPIDS TO CLINTON LINE. COON RAPIDS IS 55 MILES NORTHWEST OF DES MOINES AND CLINTON IS 25 MILES NORTHEAST OF DAVENPORT. THE STORMS AND SHOWERS WERE MOVING SOUTHEAST AT 35 MILES AN HOUR. MILLER
Special weather statement, Jul 29, 11:14 PM CDT, 3 hours 35 minutes before
IAZALL-300510- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 1115 PM CDT WED JUL 29 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR A SMALL PART OF SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 1 AM CDT THURSDAY MORNING... AT 1108 PM CDT...AN INTENSE THUNDERSTORM WAS OCCURRING OVER SOUTHWEST IOWA...35 TO 40 MILES SOUTHEAST OF COUNCIL BLUFFS OR 10 MILES NORTHEAST OF RED OAK. THIS THUNDERSTORM WAS CAPABLE OF PRODUCING HAIL...STRONG WIND...DANGEROUS LIGHTNING...AND HEAVY DOWNPOURS. PERSONS NEAR THIS STORM SHOULD SEEK SHELTER AND MONITOR WEATHER REPORTS FOR FURTHER DEVELOPMENTS. ALSO...ISOLATED STRONG THUNDERSTORMS WERE OCCURRING OVER SOUTH CENTRAL AND SOUTHEAST IOWA. ONE AREA OF STORMS WAS 50 TO 60 MILES SOUTH OF DES MOINES...NEAR LAMONI. ANOTHER AREA OF STORMS WAS 25 TO 45 MILES NORTH- WEST OF BURLINGTON NEAR BRIGHTON AND MOUNT PLEASANT. / THE STORMS WERE MOVING SOUTHEAST AT 35 MILES AN HOUR. THE ONE TO TWO HOUR OUTLOOK IS FOR ISOLATED STRONG STORMS AND SCATTERED SHOWERS TO CONTINUE OVER THE SOUTHERN THIRD OF IOWA. MILLER
Special weather statement, Jul 29, 11:51 PM CDT, 2 hours 58 minutes before
IAZALL-300510- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 1150 PM CDT WED JUL 29 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THURSDAY MORNING... AT 1127 PM CDT...WIDELY SCATTERED STRONG AND INTENSE THUNDERSTORMS WERE OCCURRING OVER THE SOUTH TWO TIERS OF IOWAS COUNTIES. THE STRONGEST STORMS WERE LOCATED 60 MILES SOUTH OF DES MOINES NEAR LAMONI...AND 45 MILES SOUTHEAST OF COUNCIL BLUFFS OR 10 MILES EAST OF RED OAK. THESE STORMS WERE CAPABLE OF PRODUCING SMALL HAIL...STRONG WIND...DEADLY LIGHTNING...AND HEAVY DOWNPOURS. ALSO...THUNDERSHOWERS AND SHOWERS WERE SCATTERED OVER THE SOUTHERN QUARTER OF IOWA...SOUTH OF A COUNCIL BLUFFS TO DES MOINES TO CLINTON LINE. CLINTON IS 25 MILES NORTHEAST OF DAVENPORT. THE STORMS AND SHOWERS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. / MILLER
Special weather statement, Jul 29, 11:56 PM CDT, 2 hours 53 minutes before
IAZALL-300510- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED FOR HEADING... NATIONAL WEATHER SERVICE DES MOINES IA 1150 PM CDT WED JUL 29 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THURSDAY MORNING... AT 1127 PM CDT...WIDELY SCATTERED STRONG AND INTENSE THUNDERSTORMS WERE OCCURRING OVER THE SOUTH TWO TIERS OF IOWAS COUNTIES. THE STRONGEST STORMS WERE LOCATED 60 MILES SOUTH OF DES MOINES NEAR LAMONI...AND 45 MILES SOUTHEAST OF COUNCIL BLUFFS OR 10 MILES EAST OF RED OAK. THESE STORMS WERE CAPABLE OF PRODUCING SMALL HAIL...STRONG WIND...DEADLY LIGHTNING...AND HEAVY DOWNPOURS. ALSO...THUNDERSHOWERS AND SHOWERS WER E SCATTERED OVER THE SOUTHERN QUARTER OF IOWA...SOUTH OF A COUNCIL BLUFFS TO DES MOINES TO CLINTON LINE. CLINTON IS 25 MILES NORTHEAST OF DAVENPORT. THE STORMS AND SHOWERS WERE MOVING SOUTHEAST AT 30 MILES AN HOUR. / MILLER
Special weather statement, Jul 30, 12:44 AM CDT, 2 hours 5 minutes before
IAZALL-300510- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 1245 AM CDT THU JUL 30 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THIS MORNING... ...A FLASH FLOOD WATCH FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THIS MORNING... AT 1233 AM CDT...SHOWERS AND ISOLATED STRONG THUNDERSTORMS CONTINUED OVER ABOUT THE SOUTHERN THIRD OF IOWA. THE SHOWERS AND STORMS WERE SOUTH OF A LINE FROM OMAHA/COUNCIL BLUFFS NORTHEAST TO DES MOINES THEN SOUTHEAST TO 20 MILES NORTH OF BURLINGTON. THE STRONGEST STORM IN THIS AREA WAS LOCATED 50 MILES SOUTHWEST OF DES MOINES BETWEEN CUMBERLAND AND CRESTON. THIS STORMS WILL PRODUCE VERY HEAVY RAIN...FREQUENT DEADLY LIGHTNING AND POSSIBLY SOME SMALL HAIL. THE SHOWERS AND STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. BARLOW
Special weather statement, Jul 30, 1:47 AM CDT, 1 hour 2 minutes before
IAZALL-300740- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 145 AM CDT THU JUL 30 1992 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THIS MORNING... ...A FLASH FLOOD WATCH FOR PARTS OF SOUTHWEST AND SOUTH CENTRAL IOWA UNTIL 6 AM CDT THIS MORNING... AT 133 AM CDT...SHOWERS AND ISOLATED STRONG THUNDERSTORMS CONTINUED OVER ABOUT THE SOUTHERN HALF OF IOWA. THE SHOWERS AND STORMS WERE SOUTH OF A LINE FROM 30 MILES SOUTH OF SIOUX CITY...NEAR ONAWA...EAST THROUGH DES MOINES TO JUST SOUTH OF CEDAR RAPIDS. ALTHOUGH THE OVERALL INTENSITY OF THE THUNDERSTORMS HAS SHOWN A SLIGHT DECREASE SINCE 1230...SEVERAL OF THE STORMS PARTICULARLY THOSE ALONG A LINE FROM OMAHA/COUNCIL BLUFFS THROUGH DES MOINES WILL PRODUCE VERY HEAVY RAINS. THERE WILL BE SOME LOCALIZED STREET FLOODING IN AROUND THE DES MOINES METROPLOITAN AREA FOR THE NEXT SEVERAL HOURS. THE SHOWERS AND STORMS WERE MOVING EAST AT 25 TO 30 MILES AN HOUR. BARLOW
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 3:24 AM CDT | Flash Flood Warning | DMX | Mahaska | 2 hr |
Nearby
Flash Flood Warnings in Iowa, 1992Every flash flood warning in 1992
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.