Alert archive / Iowa / Flash Flood Warnings in 2011
Flash Flood Warning 27, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 26, 2011, 4:57 PM CDT for 4 counties in Iowa. It was in force for 6 hr. 3 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, 4:57 PM CDT (21:57 UTC)
- Expired
- Jun 26, 2011, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Adair County, IA, Adams County, IA, Madison County, IA, Union County, IA
The radar
The Des Moines radar (KDMX), 78 km from the middle of the area, began a volume at 21:58 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, 5:25 PM CDT | FLASH FLOOD | 4 Nw Creston, IA | WATER FLOWING OVER THE ROAD AT SEVERAL LOCATIONS NEAR THE INTERSECTION OF 140TH STREET AND HIGHWAY 25. DEPTH UNKNOWN. |
| Jun 26, 7:04 PM CDT | FLASH FLOOD | 10 N Prescott, IA | EMERGENCY MANAGER REPORTS SEVERAL SECONDARY ROADS ARE FLASH FLOODED IN NORTHEAST ADAMS COUNTY. |
| Jun 26, 7:20 PM CDT | FLASH FLOOD | 6 Ne Prescott, IA | 1 FOOT OF WATER FLOWING OVER THE INTERSECTION OF UNION AND 150TH STREET. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 175 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
- 859 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
394 WGUS53 KDMX 262157 FFWDMX IAC001-003-121-175-270400- /O.NEW.KDMX.FF.W.0027.110626T2157Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 457 PM CDT SUN JUN 26 2011 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN ADAMS COUNTY IN SOUTHWEST IOWA... NORTHERN UNION COUNTY IN SOUTH CENTRAL IOWA... SOUTHERN ADAIR COUNTY IN SOUTHWEST IOWA... SOUTHWESTERN MADISON COUNTY IN SOUTH CENTRAL IOWA... * UNTIL 1100 PM CDT * AT 456 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CRESTON. LOCAL LAW ENFORCEMENT INDICATED THAT WATER WAS BEGINNING TO FLOW ACROSS HIGHWAY 25 NORTH OF CRESTON AT 450 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 4127 9401 4102 9401 4103 9470 4125 9470 $$ COGIL
6 follow-up statements
809 WGUS73 KDMX 262254 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 554 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270400- /O.CON.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 554 PM CDT SUN JUN 26 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES UNTIL 1100 PM CDT... AT 552 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 1 TO 3 INCHES OF RAINFALL HAS OCCURRED ACROSS PORTIONS OF NORTHERN UNION COUNTY. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CRESTON. AT 525 PM CDT...FLASH FLOODING WAS REPORTED IN AND AROUND CRESTON. WATER WAS REPORTED UP TO THE WINDOWS OF A VEHICLE IN TOWN ALONG WITH SEVERAL ROADS UNDER WATER. ADDITIONAL RUNOFF FROM HEAVY RAINFALL JUST NORTH OF TOWN WILL CONTINUE TO WORK DOWN STREAMS THROUGH TOWN CONTINUING THE FLASH FLOODING THREAT. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR AND THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN AROUND...DONT DROWN. && LAT...LON 4127 9401 4102 9401 4103 9470 4125 9470 $$
208 WGUS73 KDMX 270042 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 742 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270400- /O.CON.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 742 PM CDT SUN JUN 26 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES UNTIL 1100 PM CDT... AT 741 PM CDT...EMERGENCY MANAGEMENT REPORTED THAT FLASH FLOODING WAS OCCURRING IN NORTHEAST ADAMS COUNTY. SEVERAL SECONDARY ROADS HAD WATER FLOWING OVER THE ROADWAYS. IN ADDITION...AT THE INTERSECTION OF 150TH STREET AND UNION AVENUE...1 FOOT OF WATER WAS FLOWING OVER THE ROADWAY. ADDITIONAL HEAVY RAINFALL IS EXPECTED BY 900 PM AS ADDITIONAL THUNDERSTORMS PASS THROUGH WESTERN INTO SOUTHERN IOWA. THIS WILL RENEW ANY FLASH FLOODING IN THE WARNED AREAS. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CRESTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 4127 9401 4102 9401 4103 9470 4125 9470 $$
019 WGUS73 KDMX 270219 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 919 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270400- /O.CON.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 919 PM CDT SUN JUN 26 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES UNTIL 1100 PM CDT... AT 917 PM CDT...LAW ENFORCEMENT OFFICIALS REPORTED THAT SEVERAL ROADS IN NORTHEASTERN ADAMS COUNTY WERE CLOSED DUE TO FLASH FLOODING. OTHER AREAS OF FLASH FLOODING ARE LIKELY OCCURRING ELSEWHERE IN THE WARNED AREA. ADDITIONAL THUNDERSTORMS WITH ADDITIONAL HEAVY RAINFALL WERE APPROACHING THE WARNED AREA. THIS ADDITIONAL RAINFALL WILL LEAD TO EITHER WORSE OR PROLONGED FLOODING. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CRESTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. && LAT...LON 4127 9401 4102 9401 4103 9470 4125 9470 $$ ZOGG
802 WGUS73 KDMX 270310 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1010 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270400- /O.CON.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 1010 PM CDT SUN JUN 26 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES UNTIL 1100 PM CDT... AT 1008 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SECOND ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL MOVING ACROSS THE WARNED AREA. THIS SECOND ROUND OF THUNDERSTORMS WILL PRODUCE ANOTHER ONE HALF TO ONE INCH OF RAINFALL. THIS ADDITIONAL RAINFALL WILL EITHER PROLONG THE ONGOING FLASH FLOODING...OR MAY MAKE IT WORSE IN AREAS. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CRESTON. 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 4127 9401 4102 9401 4103 9470 4125 9470 $$ ZOGG
768 WGUS73 KDMX 270319 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1019 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270400- /O.CON.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 1019 PM CDT SUN JUN 26 2011 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN ADAMS... SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES UNTIL 1100 PM CDT... AT 1019 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SECOND ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL MOVING ACROSS THE WARNED AREA. THIS SECOND ROUND OF THUNDERSTORMS WILL PRODUCE ANOTHER 0.75 TO 1.5 INCHES OF RAINFALL. THIS ADDITIONAL RAINFALL WILL EITHER PROLONG THE ONGOING FLASH FLOODING...OR MAY MAKE IT WORSE IN AREAS. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE... CRESTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. && LAT...LON 4127 9401 4102 9401 4103 9470 4125 9470 $$ ZOGG
735 WGUS73 KDMX 270405 FFSDMX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 1105 PM CDT SUN JUN 26 2011 IAC001-003-121-175-270418- /O.EXP.KDMX.FF.W.0027.000000T0000Z-110627T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ UNION IA-MADISON IA-ADAIR IA-ADAMS IA- 1105 PM CDT SUN JUN 26 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHEASTERN ADAMS...SOUTHERN ADAIR...SOUTHWESTERN MADISON AND NORTHERN UNION COUNTIES HAS BEEN ALLOWED TO EXPIRE... THE THUNDERSTORMS WITH HEAVY RAIN HAVE PUSHED SOUTHEAST OF THE WARNED AREA. ALTHOUGH THE ADDITIONAL RAIN WAS LOCALLY HEAVY...IT WAS NOT ENOUGH TO WORSEN THE FLOODING. FLOOD WATERS HAVE EITHER SUBSIDED OR WERE DECREASING...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. ADDITIONAL RAINFALL IS POSSIBLE LATER TONIGHT. IF THIS ADDITIONAL HEAVY RAIN OCCURS...BE ALERT FOR RENEWED FLASH FLOODING. LAT...LON 4127 9401 4102 9401 4103 9470 4125 9470 $$ ZOGG
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 3:42 PM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 23 more | 14 hr |
| Jun 26, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 55 min |
| Jun 26, 4:46 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Union | 44 min |
| Jun 26, 5:40 PM CDT | Flash Flood Warning | DMX | Clarke, Lucas | 6 hr |
| Jun 26, 5:47 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 43 min |
| Jun 26, 6:07 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 38 min |
| Jun 26, 6:20 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 40 min |
| Jun 26, 6:33 PM CDT | Severe Thunderstorm Warning | DMX | Monroe | 42 min |
| Jun 26, 6:36 PM CDT | River Flood Warning | DMX | Lucas, Wayne | 34 hr |
| Jun 26, 6:54 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 51 min |
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.