Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 64, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 10, 1993, 8:39 PM CDT for Wayne County, Iowa. It was in force for 102 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1993, 8:39 PM CDT (01:39 UTC)
- Expired
- Jul 10, 1993, 10:21 PM CDT
- In force
- 102 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Wayne County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.7 hours before the alert went out and 263 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
- 3233 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 6.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 110140 FFWDSM IAC007-185-110400- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 839 PM CDT SAT JUL 10 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)S... IN SOUTH CENTRAL IOWA ...SOUTHERN APPANOOSE COUNTY...SOUTHERN WAYNE COUNTY AT 835 PM CDT...WAYNE COUNTY SHERIFF REPORTED THAT HEAVY RAIN HAD BEEN FALLING FOR ONE AND A HALF HOURS IN THE SEYMORE AREA...WHICH IS 45 MILES SOUTHWEST OF OTTUMWA. RADAR AND SATELLITE ESTIMATES OF RAINFALL AMOUNTS IN SOUTHERN WAYNE AND SOUTHERN APPANOOSE COUNTIES INDICATE FROM 1 TO 3 INCHES HAVE FALLEN DURING THE PAST 1.5 HOURS. 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 IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. 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 10, 7:10 PM CDT, 1 hour 29 minutes before
IAZALL-110300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 710 PM CDT SAT JUL 10 1993 ...TRAVEL IS NOT RECOMMENDED IN CENTRAL IOWA UNTIL FURTHER NOTICE... THE IOWA DEPARTMENT OF PUBLIC SAFETY IS DISCOURAGING AND NOT RECOMMENDING TRAVEL ANYWHERE IN CENRAL IOWA THIS EVENING OR TONIGHT. SIGNIFICANT TRAVEL PROBLEMS WILL PLAGUE ANYONE ATTEMPING TO DRIVE IOWA HIGHWAYS IN CENTRAL IOWA...INCLUDING I80 AND I35 IN AND AROUND DES MOINES. SO MANY ROAD CLOSING HAVE OCCURRED DUE TO WATER ACROSS ROADS FROM RIVERS OUT OF THEIR BANKS...THAT THERE IS NO PLACE TO DETOUR DRIVERS. PLEASE CONSIDER DELAYING YOUR TRAVEL PLANS UNTIL LATER. BURKE
Special weather statement, Jul 10, 7:11 PM CDT, 1 hour 28 minutes before
IAZALL-110300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 710 PM CDT SAT JUL 10 1993 ...TRAVEL IS NOT RECOMMENDED IN CENTRAL IOWA UNTIL FURTHER NOTICE... THE IOWA DEPARTMENT OF PUBLIC SAFETY IS DISCOURAGING AND NOT RECOMMENDING TRAVEL ANYWHERE IN CENRAL IOWA THIS EVENING OR TONIGHT. SIGNIFICANT TRAVEL PROBLEMS WILL PLAGUE ANYONE ATTEMPING TO DRIVE IOWA HIGHWAYS IN CENTRAL IOWA...INCLUDING I80 AND I35 IN AND AROUND DES MOINES. SO MANY ROAD CLOSING HAVE OCCURRED DUE TO WATER ACROSS ROADS FROM RIVERS OUT OF THEIR BANKS...THAT THERE IS NO PLACE TO DETOUR DRIVERS. PLEASE CONSIDER DELAYING YOUR TRAVEL PLANS UNTIL LATER. BURKE
Special weather statement, Jul 10, 7:45 PM CDT, 54 minutes before
IAZALL-110140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 745 PM CDT SAT JUL 10 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EAST CENTRAL AND SOUTHEAST IOWA THIS SATURDAY EVENING UNTIL 1000 PM CDT... AT 730 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS CONTINUED OVER FAR SOUTH CENTRAL AND SOUTHEAST IOWA. THE STORMS WERE LOCATED IN A 10 MILE WIDE BAND ALONG THE IOWA/MISSOURI BORDER FROM 60 MILES SOUTH OF DES MOINES...TO 30 MILES SOUTHEAST OF OTTUMWA NEAR KEOSAUQUA. THE STORMS WERE PRODUCING EXTREMELY HEAVY RAIN...AND POSSIBLY GUSTY WINDS AND SMALL HAIL. THE STORMS WERE LOCATED IN AN AREA OF SHOWERS AND STORMS OCCURRING SOUTH OF A LINE FROM 45 MILES SOUTHWEST OF DES MOINES NEAR CRESTON...TO 15 MILES NORTHWEST OF OTTUMWA NEAR OSKALOOSA...TO NEAR CEDAR RAPIDS. MOVEMENT OF THE SHOWERS AND STORMS WAS EAST AT 25 MILES AN HOUR. / OTHER VERY STRONG STORMS WERE LOCATED IN NORTH CENTRAL IOWA NEAR NORTHWOOD...OSAGE AND CHARLES CITY...OR FROM 20 MILES NORTH TO 30 MILES SOUTHEAST OF MASON CITY. THESE STORMS WERE ALSO PRODUCING HEAVY RAIN GUSTY WINDS AND POSSIBLE HAIL AS THEY MOVED SOUTHEAST AT AROUND 35 MILES AN HOUR. THE HEAVY RAINFALL PRODUCED BY THESE STORMS MAY CAUSE RAPID RISES OF CREEKS AND STREAMS...FURTHER AGGRAVATING FLOODING PROBLEMS IN THE STATE. PEOPLE IN THESE AREAS SHOULD CONTINUE TO MONITOR THE SITUATION. KALLMAN
Special weather statement, Jul 10, 7:46 PM CDT, 53 minutes before
IAZALL-110140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 745 PM CDT SAT JUL 10 1993 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PARTS OF EAST CENTRAL AND SOUTHEAST IOWA THIS SATURDAY EVENING UNTIL 1000 PM CDT... AT 730 PM CDT...NUMEROUS VERY STRONG THUNDERSTORMS CONTINUED OVER FAR SOUTH CENTRAL AND SOUTHEAST IOWA. THE STORMS WERE LOCATED IN A 10 MILE WIDE BAND ALONG THE IOWA/MISSOURI BORDER FROM 60 MILES SOUTH OF DES MOINES...TO 30 MILES SOUTHEAST OF OTTUMWA NEAR KEOSAUQUA. THE STORMS WERE PRODUCING EXTREMELY HEAVY RAIN...AND POSSIBLY GUSTY WINDS AND SMALL HAIL. THE STORMS WERE LOCATED IN AN AREA OF SHOWERS AND STORMS OCCURRING SOUTH OF A LINE FROM 45 MILES SOUTHWEST OF DES MOINES NEAR CRESTON...TO 15 MILES NORTHWEST OF OTTUMWA NEAR OSKALOOSA...TO NEAR CEDAR RAPIDS. MOVEMENT OF THE SHOWERS AND STORMS WAS EAST AT 25 MILES AN HOUR. / OTHER VERY STRONG STORMS WERE LOCATED IN NORTH CENTRAL IOWA NEAR NORTHWOOD...OSAGE AND CHARLES CITY...OR FROM 20 MILES NORTH TO 30 MILES SOUTHEAST OF MASON CITY. THESE STORMS WERE ALSO PRODUCING HEAVY RAIN GUSTY WINDS AND POSSIBLE HAIL AS THEY MOVED SOUTHEAST AT AROUND 35 MILES AN HOUR. TH@E HEAVY RAINFALL PRODUCED BY THESE STORMS MAY CAUSE RAPID RISES OF CREEKS AND STREAMS...FURTHER AGGRAVATING FLOODING PROBLEMS IN THE STATE. PEOPLE IN THESE AREAS SHOULD CONTINUE TO MONITOR THE SITUATION. KALLMAN
Special weather statement, Jul 10, 8:23 PM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 825 PM CDT SAT JUL 10 1993 SEVERE THUNDERSTORM WATCH NUMBER 635 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES. JONES...JACKSON...CEDAR...CLINTON...SCOTT...MUSCATINE...LOUISA AND WASHINGTON COUNTIES. JOHNSON
Special weather statement, Jul 10, 8:25 PM CDT, 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 825 PM CDT SAT JUL 10 1993 SEVERE THUNDERSTORM WATCH NUMBER 635 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES. JONES...JACKSON...CEDAR...CLINTON...SCOTT...MUSCATINE...LOUISA AND WASHINGTON COUNTIES. JOHNSON
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:25 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell | 37 min |
| Jul 10, 8:39 PM CDT | Flash Flood Warning | DMX | Appanoose | 2 hr |
| Jul 10, 11:05 PM CDT | Severe Thunderstorm Warning | DMX | Lucas | 19 min |
| Jul 10, 11:36 PM CDT | Flash Flood Warning | DMX | Dickinson, Emmet | 3 hr |
| Jul 10, 11:56 PM CDT | Flash Flood Warning | DMX | Clay, Palo Alto | 3 hr |
| Jul 11, 6:10 AM CDT | Flash Flood Warning | DMX | Polk | 4 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.