Alert archive / Iowa / Flash Flood Warnings in 1992
Flash Flood Warning 3, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 15, 1992, 8:30 PM CDT for 4 counties in Iowa. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 15, 1992, 8:30 PM CDT (01:30 UTC)
- Expired
- Jul 15, 1992, 10:30 PM CDT
- In force
- 2 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Decatur County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 1.5 hours before the alert went out and 187 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
- 1427 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 684 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 160132 FFWDSM IAC159-175-173-053-160330- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 830 PM CDT WED JUL 15 1992 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL IOWA ...RINGGOLD COUNTY...UNION COUNTY...DECATUR IN SOUTHWEST IOWA ...TAYLOR COUNTY BETWEEN 6 AND 815 PM HEAVY RAINS OF UP TO 5 INCHES HAVE FALLEN IN TAYLOR RINGGOLD UNION AND DECATUR COUNTIES OR ABOUT 70 MILES TO THE SOUTHWEST OF DES MOINES. THIS HEAVY RAIN IS CAUSING A RAPID RISE OF SMALL CREEKS AND STREAMS. THESE STREAMS WILL SOON OVERFLOW THEIR BANKS COVERING MANY ROADS WITH WATER. AT 820 PM UNION COUNTY SHERIFF REPORTED DITCHES FULL AND MANY CREEKS AT BANKFUL. WATER WAS OVER THE ROAD AT THE INTERSECTION OF J13 AND HIGHWAY 25 IN TAYLOR COUNTY. AT 825 PM CLEARFILED IN TAYLOR COUNTY REPORTED STREET FLOODING. 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 GROUNDh. CEW
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 15, 6:47 PM CDT, 1 hour 43 minutes before
IAZALL-160040- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 645 PM CDT WED JUL 15 1992 ...TORNADO WATCH FOR SOUTHWEST AND CENTRAL IOWA UNTIL 10 PM CDT... AT 630 PM CDT...A LINE OF SCATTERED INTENSE THUNDERSTORMS WAS LOCATED OVER THE WEST HALF OF IOWA. THE LINE OF STORMS WAS 60 MILES WIDE AND WAS CENTERED FROM THE IOWA/MINNESOTA BORDER 35 MILES NORTHWEST OF MASON CITY ...TO 45 MILES WEST OF DES MOINES NEAR GUTHRIE CENTER...TO 45 MILES WEST OF LAMONI. THE STRONGEST STORM WAS OCCURRING 45 MILES SOUTHWEST OF DES MOINES NEAR GREENFIELD. PEA TO DIME SIZED HAIL AND WIND GUSTS TO 70 MILES AN HOUR WERE REPORTED WITH THESE STORMS. THE STORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. RICHTER/FILLBACH
Special weather statement, Jul 15, 6:50 PM CDT, 1 hour 40 minutes before
IAZALL-160045- SPECIAL WEATHER NATIONAL WEATHER SERVICE DES MOINES IA 650 PM CDT WED JUL 15 1992 A SMALL PART OF THE TORNADO WATCH FOR SOUTHWEST IOWA HAS BEEN CANCELLED. THE FOLLOWING COUNTIES HAVE BEEN CLEARED FROM THE WATCH... HARRISON...POTTAWATTAMIE...AND MILLS. THUNDERSTORMS CONTINUE IN THE EAST PART OF POTTAWATTAMIE COUNTY...BUT THE THREAT OF SEVERE WEATHER HAS SHIFTED TO EAST. THE REMAINDER OF THE TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM THIS EVENING.
Special weather statement, Jul 15, 7:16 PM CDT, 1 hour 14 minutes before
IAZ006>011-016>019-026>029-038>040-160200- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA 710 PM CDT WED JUL 15 1992 ...STRONG THUNDERSTORMS WERE MOVING INTO NORTH CENTRAL IOWA... AT 710 PM THUNDERSTORMS PRODUCING HEAVY RAIN AND INTENSE LIGHTNING WERE IN THE MANLY/MASON CITY AREA AND 20 MILES WEST OF MASON CITY. THESE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. BY 7 PM CDT THUNDERSTORMS WILL BE IN THE MASON CITY...NORA SPRINGS CLEAR LAKE...BRITT AND OSAGE AREAS OF NORTH CENTRAL IOWA. ELSEWHERE ACROSS NORTHEAST IOWA THERE WILL BE A CLOUD/SUN MIX WITH TEMPERATURES 75 TO 80 DEGREES. THE WINDS WILL BE SOUTH 10 TO 20 MILES AN HOUR. RR
Special weather statement, Jul 15, 7:45 PM CDT, 45 minutes before
IAZALL-160140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 744 PM CDT WED JUL 15 1992 ...TORNADO WATCH FOR SOUTHWEST AND CENTRAL IOWA UNTIL 10 PM CDT... AT 730 PM CDT...A LINE OF SCATTERED VERY STRONG THUNDERSTORMS WAS LOCATED OVER THE CENTRAL THIRD OF IOWA. THE LINE OF STORMS WAS 65 MILES WIDE AND WAS CENTERED FROM THE IOWA/MINNESOTA BORDER 25 MILES NORTH OF MASON CITY...45 MILES NORTHWEST OF DES MOINES NEAR JEFFERSON...TO 30 MILES WEST OF LAMONI. AN INTENSE THUNDERSTORM WAS OCCURRING 15 MILES NORTHEAST OF FORT DODGE. PEA TO DIME SIZED HAIL AND WIND GUSTS TO 70 MILES AN HOUR WERE REPORTED WITH THESE STORMS. THE STORMS WERE MOVING SOUTHEAST AT 25 MILES AN HOUR. RICHTER/FILLBACH
Special weather statement, Jul 15, 8:19 PM CDT, 11 minutes before
IAZ006>011-016>019-026>029-038>040-160200- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA 810 PM CDT WED JUL 15 1992 ...STRONG THUNDERSTORMS WERE IN NORTH CENTRAL AND NORTHEAST IOWA... AT 810 PM THUNDERSTORMS AND SHOWERS WERE MOVING EAST AND SOUTHEAST IN NORTH CENTRAL AND NORTHEAST IOWA AT 30 MILES AN HOUR. THE SHOWERS AND THUNDERSTORMS WERE PRODUCING BRIEF HEAVY RAIN AND VIVID LIGHTNING. BY 910 PM CDT THUNDERSTORMS AND SHOWERS WILL BE IN AND NEAR THE CITIES OF MASON CITY/CHARLES CITY/OSAGE/HAMPTON AND NEW HAMPTON. THE REST OF NORTHEAST IOWA WILL BE MOSTLY CLOUDY WITH TEMPERATURES STARTING TO FALL INTO THE LOW 70S. RR
Special weather statement, Jul 15, 8:28 PM CDT, 2 minutes before
IAZ006>011-016>019-026>029-038>040-160200- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE FOR NORTHEAST IOWA NATIONAL WEATHER SERVICE WATERLOO IA...CORRECTION 825 PM CDT WED JUL 15 1992 ...THERE IS A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHEAST AND NORTH CENTRAL IOWA... AT 810 PM THUNDERSTORMS AND SHOWERS WERE MOVING EAST AND SOUTHEAST IN NORTH CENTRAL AND NORTHEAST IOWA AT 30 MILES AN HOUR. THE SHOWERS AND THUNDERSTORMS WERE PRODUCING BRIEF HEAVY RAIN AND VIVID LIGHTNING. BY 910 PM CDT THUNDERSTORMS AND SHOWERS WILL BE IN AND NEAR THE CITIES OF MASON CITY/CHARLES CITY/OSAGE/HAMPTON AND NEW HAMPTON. THE REST OF NORTHEAST IOWA WILL BE MOSTLY CLOUDY WITH TEMPERATURES STARTING TO 4FALL INTO THE LOW 70S. RR
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 7:05 PM CDT | Tornado Warning | DMX | Webster | 40 min |
| Jul 15, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 26 min |
| Jul 15, 7:44 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 46 min |
| Jul 15, 9:05 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 40 min |
| Jul 15, 9:11 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 49 min |
| Jul 15, 9:14 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 46 min |
| Jul 15, 9:15 PM CDT | Flash Flood Warning | DMX | Boone | 2 hr |
| Jul 15, 9:41 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Van Buren | 49 min |
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.