Alert archive / Iowa / Flash Flood Warnings in 2011
Flash Flood Warning 26, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 25, 2011, 9:11 AM CDT for Appanoose County, Wayne County, Iowa. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 25, 2011, 9:11 AM CDT (14:11 UTC)
- Expired
- Jun 25, 2011, 1:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Appanoose County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 124 km from the middle of the area, began a volume at 14:11 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 25, 11:45 AM CDT | FLASH FLOOD | 5 Nnw Seymour, IA | DEPOT ST. IN PROMISE CITY FLOODED WITH SEVERAL INCHES OF WATER MAKING ROAD IMPASSABLE FOR A SHORT TIME THIS MORNING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 2.2 hours before the alert went out and 246 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
- 1091 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -66 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
957
WGUS53 KDMX 251411
FFWDMX
IAC007-185-251800-
/O.NEW.KDMX.FF.W.0026.110625T1411Z-110625T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
911 AM CDT SAT JUN 25 2011
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN APPANOOSE COUNTY IN SOUTH CENTRAL IOWA...
WAYNE COUNTY IN SOUTH CENTRAL IOWA...
* UNTIL 100 PM CDT
* AT 910 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. UP TO THREE INCHES OF RAIN HAD FALLEN SINCE 700 AM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CENTERVILLE...CORYDON AND SEYMOUR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
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. TURN AROUND...DONT DROWN.
&&
LAT...LON 4057 9355 4089 9356 4087 9310 4068 9264
4059 9264
$$
JOHNSON3 follow-up statements
074
WGUS73 KDMX 251506
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1006 AM CDT SAT JUN 25 2011
IAC007-185-251800-
/O.CON.KDMX.FF.W.0026.000000T0000Z-110625T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE IA-APPANOOSE IA-
1006 AM CDT SAT JUN 25 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN APPANOOSE AND
WAYNE COUNTIES UNTIL 100 PM CDT...
AT 956 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE HEAVY RAIN PRODUCING THUNDERSTORMS WERE WEAKENING AND
MOVING SOUTHEAST INTO MISSOURI. THREE INCHES OF RAIN HAS FALLEN IN
SEYMOUR SINCE 700 AM THIS MORNING. AN ADDITIONAL HALF INCH OF RAIN
OR LESS IS POSSIBLE THROUGH THE NOON HOUR.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS WHICH ARE PRONE TO FLASH FLOODING IN THE
WARNED AREA INCLUDE...THE KIRKENDALL CREEK SOUTHWEST OF
NUMA...SEVERAL LOW WATER CROSSINGS BETWEEN MOULTON AND EXLINE AND
NUMEROUS OTHER SMALL STREAMS IN CENTRAL WAYNE AND SOUTHERN APPANOOSE
COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS... AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR AND THE
WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN
AROUND...DONT DROWN.
&&
LAT...LON 4057 9355 4089 9356 4087 9310 4068 9264
4059 9264
$$
JOHNSON466
WGUS73 KDMX 251646
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1146 AM CDT SAT JUN 25 2011
IAC007-185-251800-
/O.CON.KDMX.FF.W.0026.000000T0000Z-110625T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE IA-APPANOOSE IA-
1146 AM CDT SAT JUN 25 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN APPANOOSE AND
WAYNE COUNTIES UNTIL 100 PM CDT...
AT 1130 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE HEAVY RAIN PRODUCING THUNDERSTORMS HAD WEAKENED AND MOVED
SOUTHEAST INTO MISSOURI. ADDITIONAL HEAVY RAINFALL IS NOT
EXPECTED. THREE INCHES OF RAIN HAS FALLEN IN SEYMOUR SINCE 700 AM
THIS MORNING.
RUNOFF FROM THE EXCESSIVE RAINFALL WILL LIKELY CAUSE FLASH FLOODING
THROUGH THE NOON HOUR. SOME LOCATIONS WHICH ARE PRONE TO FLASH
FLOODING IN THE WARNED AREA INCLUDE...THE KIRKENDALL CREEK SOUTHWEST
OF NUMA...SEVERAL LOW WATER CROSSINGS BETWEEN MOULTON AND EXLINE AND
NUMEROUS OTHER SMALL STREAMS IN CENTRAL WAYNE AND SOUTHERN APPANOOSE
COUNTIES.
PLEASE REPORT FLASH FLOODING TO LOCAL LAW ENFORCEMENT OR THE
NATIONAL WEATHER SERVICE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS... AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR AND THE
WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN
AROUND...DONT DROWN.
&&
LAT...LON 4057 9355 4089 9356 4087 9310 4068 9264
4059 9264
$$131
WGUS73 KDMX 251755
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1255 PM CDT SAT JUN 25 2011
IAC007-185-251810-
/O.EXP.KDMX.FF.W.0026.000000T0000Z-110625T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAYNE IA-APPANOOSE IA-
1255 PM CDT SAT JUN 25 2011
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN APPANOOSE
AND WAYNE COUNTIES HAS BEEN ALLOWED TO EXPIRE...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
LAT...LON 4057 9355 4089 9356 4087 9310 4068 9264
4059 9264
$$
JOHNSONThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 5:07 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 38 min |
| Jun 25, 5:44 AM CDT | Severe Thunderstorm Warning | DMX | Clarke | 30 min |
| Jun 25, 5:51 AM CDT | Flash Flood Warning | DMX | Adams, Cass, Union | 6 hr |
| Jun 25, 7:23 AM CDT | Flash Flood Warning | DMX | Clarke | 6 hr |
| Jun 25, 11:30 AM CDT | River Flood Warning | DMX | Decatur | 21 hr |
| Jun 25, 11:30 AM CDT | River Flood Warning | DMX | Appanoose, Wayne | 29 hr |
Nearby
Flash Flood Warnings in Iowa, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.