Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 30, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 24, 1993, 9:08 PM CDT for Washington County, Iowa. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Jun 24, 1993, 9:08 PM CDT (02:08 UTC)
- Expired
- Jun 24, 1993, 10:16 PM CDT
- In force
- 68 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Washington County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.1 hours before the alert went out and 388 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
- 1945 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 162 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 250209 FFWDSM IAC183-250400- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 908 PM CDT THU JUN 24 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1100 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION(S)... IN SOUTHEAST IOWA ...WASHINGTON COUNTY AT 905 PM...FLASH FLOODING HAD CLOSED OLD HIGHWAY 19 NORTH OF AINSWORTH ...45 MILES SOUTH OF CEDAR RAPIDS...ALONG THE GOOSE CREEK. THE CREEK WAS REPORTED OUT OF ITS BANKS BY THE WASHINGTON COUNTY SHERIFF'S OFFICE. THUNDERSTORMS...PRODUCING HEAVY RAIN WERE MOVING ACROSS WASHINGTON COUNTY AT 905 PM. ADDITIONAL FLASH FLOODING IS LIKELY. 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. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. JOHNSON &
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, Jun 24, 8:40 PM CDT, 28 minutes before
IAZALL-250245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 840 PM CDT THU JUN 24 1993 AT 830 PM CDT...NUMEROUS SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS CONTINUED OVER EAST CENTRAL AND SOUTHEAST IOWA. THE STORMS WERE SOUTH EAST OF A LINE EXTENDING FROM LAMONI TO JUST NORTH OF DUBUQUE. THE HEAVIEST RAINS WERE LOCATED ALONG A LINE ABOUT 15 MILES WIDE AND EXTENDING FROM CEDAR RAPIDS SOUTHEAST TO JUST EAST OF OTTUMWA. THE SHOWERS AND STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. SCOTT
Special weather statement, Jun 24, 8:44 PM CDT, 24 minutes before
IAZALL-250245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 840 PM CDT THU JUN 24 1993 AT 830 PM CDT...NUMEROUS SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS CONTINUED OVER EAST CENTRAL AND SOUTHEAST IOWA. THE STORMS WERE SOUTH EAST OF A LINE EXTENDING FROM LAMONI TO JUST NORTH OF DUBUQUE. THE HEAVIEST RAINS WERE LOCATED ALONG A LINE ABOUT 15 MILES WIDE AND EXTENDING FROM CEDAR RAPIDS SOUTHEAST TO JUST EAST OF OTTUMWA. THE SHOWERS AND STORMS WERE MOVING NORTHEAST 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 |
|---|---|---|---|---|
| Jun 24, 10:24 PM CDT | Flash Flood Warning | DMX | Van Buren | 3 hr |
Nearby
Flash Flood Warnings in Iowa, 1993Every flash flood warning in 1993
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.