Alert archive / Iowa / Flash Flood Warnings in 2011
Flash Flood Warning 29, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 26, 2011, 8:09 PM CDT for Appanoose County, Davis County, Iowa. It was in force for 6 hr. 2 reports 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 26, 2011, 8:09 PM CDT (01:09 UTC)
- Expired
- Jun 27, 2011, 2:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Appanoose County, IA, Davis County, IA
The radar
The Des Moines radar (KDMX), 139 km from the middle of the area, began a volume at 01:11 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 26, 10:11 PM CDT | FLASH FLOOD | 5 Se Exline, IA | BRIDGE DAMAGED ON 610TH STREET FROM CREEK. |
| Jun 26, 10:30 PM CDT | FLASH FLOOD | 4 S Exline, IA | DELAYED REPORT. SEVERAL ROADS AND BRIDGES WASHED OUT IN VARIOUS LOCATIONS IN THE SOUTHEAST PART OF THE COUNTY. REPORTED BY APPANOOSE COUNTY SECONDARY ROADS DEPT. |
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 00:00Z, 1.2 hours before the alert went out and 200 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
- 15 J/kg
- Mixed-layer CIN
- -398 J/kg
- Mixed-layer LCL
- 1115 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
325
WGUS53 KDMX 270109
FFWDMX
IAC007-051-270700-
/O.NEW.KDMX.FF.W.0029.110627T0109Z-110627T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
809 PM CDT SUN JUN 26 2011
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
APPANOOSE COUNTY IN SOUTH CENTRAL IOWA...
DAVIS COUNTY IN SOUTHEAST IOWA...
* UNTIL 200 AM CDT
* AT 800 PM CDT...THE DAVIS COUNTY SHERIFFS OFFICE REPORTED FLASH
FLOODING OCCURRING IN THE BLOOMFIELD AREA. OVER 2 INCHES OF RAINFALL
OCCURRED OVER A SHORT PERIOD OF TIME THIS EVENING OVER THE WARNED
AREA. AN ADDITIONAL 1 TO 2 INCHES IS POSSIBLE TONIGHT AS
THUNDERSTORMS MOVE IN FROM THE WEST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA.
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 4090 9305 4090 9218 4089 9217 4059 9218
4058 9308
$$
DONAVON4 follow-up statements
811
WGUS73 KDMX 270228
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
928 PM CDT SUN JUN 26 2011
IAC007-051-270700-
/O.CON.KDMX.FF.W.0029.000000T0000Z-110627T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APPANOOSE IA-DAVIS IA-
928 PM CDT SUN JUN 26 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR DAVIS AND APPANOOSE
COUNTIES UNTIL 200 AM CDT...
AT 928 PM CDT...ALTHOUGH THE RAIN HAD ENDED...ADDITIONAL
THUNDERSTORMS WITH ADDITIONAL HEAVY RAINFALL WERE APPROACHING THE
WARNED AREA. THIS ADDITIONAL RAINFALL WILL LEAD TO EITHER WORSE OR
PROLONGED FLOODING.
SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CENTERVILLE AND BLOOMFIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 4090 9305 4090 9218 4089 9217 4059 9218
4058 9308
$$
ZOGG145
WGUS73 KDMX 270422
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1122 PM CDT SUN JUN 26 2011
IAC007-051-270700-
/O.CON.KDMX.FF.W.0029.000000T0000Z-110627T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APPANOOSE IA-DAVIS IA-
1122 PM CDT SUN JUN 26 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR DAVIS AND APPANOOSE
COUNTIES UNTIL 200 AM CDT...
AT 1118 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. THE
HEAVIEST THUNDERSTORM WAS IN SOUTHERN APPANOOSE COUNTY. ADDITIONAL
STORMS WERE BETWEEN CENTERVILLE AND BLOOMFIELD...BUT NORTH OF U.S.
HIGHWAY 34. THE STORM IN SOUTHERN APPANOOSE COUNTY HAS PRODUCED AS
MUCH AS 1.25 TO 1.5 INCHES OF RAIN OVER THE PAST HOUR.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CENTERVILLE AND BLOOMFIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 4090 9305 4090 9218 4089 9217 4059 9218
4058 9308
$$
ZOGG947
WGUS73 KDMX 270450
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1150 PM CDT SUN JUN 26 2011
IAC007-051-270700-
/O.CON.KDMX.FF.W.0029.000000T0000Z-110627T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APPANOOSE IA-DAVIS IA-
1150 PM CDT SUN JUN 26 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR DAVIS AND APPANOOSE
COUNTIES UNTIL 200 AM CDT...
AT 1147 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. THE
AREA OF MOST CONCERN INCLUDES SOUTHERN APPANOOSE COUNTY...MAINLY
SOUTH OF A LINE THROUGH CINCINNATI AND MOULTON...WHERE THUNDERSTORMS
HAVE PERSISTED THE LONGEST. THE SHOAL CREEK AND PACKARD CREEK
WATERSHEDS HAVE BEEN HIT THE HARDEST...WITH ESTIMATED RAINFALL OVER
THE PAST THREE HOURS AS HIGH AS 2.5 TO 3 INCHES. ADDITIONAL HEAVY
RAINFALL OF ONE HALF TO ONE INCH IS POSSIBLE OVER THE NEXT HOUR.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CENTERVILLE AND BLOOMFIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 4090 9305 4090 9218 4089 9217 4059 9218
4058 9308
$$
ZOGG970
WGUS73 KDMX 270531
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1231 AM CDT MON JUN 27 2011
IAC007-051-270700-
/O.CON.KDMX.FF.W.0029.000000T0000Z-110627T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
APPANOOSE IA-DAVIS IA-
1231 AM CDT MON JUN 27 2011
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR DAVIS AND APPANOOSE
COUNTIES UNTIL 200 AM CDT...
A POTENTIALLY DANGEROUS FLASH FLOOD SITUATION EXISTS ACROSS SOUTH
CENTRAL AND SOUTHEAST APPANOOSE COUNTY...MAINLY SOUTH OF A LINE
THROUGH CINCINNATI...EXLINE AND MOULTON.
AT 1224 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL MOVING EAST ACROSS THE WARNED
AREA. THE WESTERN EDGE OF THE HEAVY RAINFALL WAS WEST OF A LINE
THROUGH CENTERVILLE AND BLOOMFIELD. OVER THE PAST THREE TO SIX
HOURS...ESTIMATED RAINFALL FROM THESE STORMS HAS EXCEEDED 3.5 TO 4
INCHES ACROSS SOUTHEASTERN APPANOOSE COUNTY...WITH AMOUNTS ACROSS
THE WARNED AREA GENERALLY AT LEAST 1 TO 2 INCHES.
LOCATIONS AND ROADS SOUTH OF A LINE THROUGH CINCINNATI...EXLINE AND
MOULTON HAVE THE GREATEST POTENTIAL FOR DANGEROUS FLASH FLOODING DUE
TO THE LOCALLY EXTREMELY HEAVY RAINFALL. A LACK OF REPORTS IN THIS
AREA HAS NOT ALLOWED FOR CONFIRMATION OF THE THREAT...HOWEVER LOCAL
TOOLS SUGGEST A POTENTIALLY DANGEROUS FLASH FLOOD THREAT EXISTS
THERE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 4090 9305 4090 9218 4089 9217 4059 9218
4058 9308
$$
ZOGGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 28 min |
| Jun 26, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 18 min |
| Jun 26, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 60 min |
| Jun 26, 8:21 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Sac | 54 min |
| Jun 26, 8:23 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 67 min |
| Jun 26, 8:47 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 58 min |
| Jun 26, 8:50 PM CDT | Tornado Warning | DMX | Carroll, Greene | 40 min |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Mahaska, Wapello | 4 days |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Wapello | 34 days |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Madison, Warren | 14 hr |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Mahaska, Marion | 37 hr |
| Jun 26, 9:03 PM CDT | River Flood Warning | DMX | Decatur | 47 hr |
| Jun 26, 9:07 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Madison | 38 min |
| Jun 26, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Story, Webster | 25 min |
| Jun 26, 9:34 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Madison, Marion, Polk, Story, Warren | 41 min |
| Jun 26, 9:43 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Story | 47 min |
| Jun 26, 9:46 PM CDT | High Wind Warning | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 12 more | 5 hr |
| Jun 26, 9:56 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Clarke, Decatur, Lucas, Ringgold, Taylor and 1 more | 64 min |
| Jun 26, 10:06 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Tama | 54 min |
| Jun 26, 10:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek, Warren | 67 min |
| Jun 26, 10:29 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 46 min |
| Jun 26, 10:42 PM CDT | Flash Flood Warning | DMX | Warren | 2 hr |
| Jun 26, 10:44 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Ringgold, Wapello and 1 more | 46 min |
| Jun 26, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 44 min |
| Jun 27, 12:47 AM CDT | River Flood Warning | DMX | Appanoose | 19 hr |
| Jun 27, 1:26 AM CDT | River Flood Warning | DMX | Taylor | 7 hr |
| Jun 27, 1:50 AM CDT | River Flood Warning | DMX | Appanoose, Wayne | 14 hr |
| Jun 27, 1:57 AM CDT | Areal Flood Advisory | DMX | Appanoose, Davis | 3 hr |
| Jun 27, 3:29 AM CDT | River Flood Warning | DMX | Webster | 52 hr |
| Jun 27, 5:00 AM CDT | Areal Flood Warning | DMX | Appanoose, Davis | 24 hr |
| Jun 27, 10:45 AM CDT | River Flood Warning | DMX | Madison, Warren | 9 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.