Alert archive / Iowa / Flash Flood Warnings in 2010
Flash Flood Warning 21, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jun 15, 2010, 10:18 AM CDT for Davis County, Wapello County, Iowa. It was in force for 3 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 15, 2010, 10:18 AM CDT (15:18 UTC)
- Expired
- Jun 15, 2010, 1:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Davis County, IA, Wapello County, IA
The radar
The Des Moines radar (KDMX), 140 km from the middle of the area, began a volume at 15:22 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 15, 10:31 AM CDT | FLASH FLOOD | Ottumwa, IA | 8 TO 10 INCHES OF WATER ON SEVERAL ROADWAYS. |
| Jun 15, 10:45 AM CDT | FLASH FLOOD | 2 N Ottumwa, IA | HIGHWAY 149 AND HIGHLAND PARK ROAD...WATER PARTIALLY COVERING ROADWAY. |
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, 3.3 hours before the alert went out and 171 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
- 316 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 549 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
564
WGUS53 KDMX 151518
FFWDMX
IAC051-179-152130-
/O.NEW.KDMX.FF.W.0021.100615T1518Z-100615T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1018 AM CDT TUE JUN 15 2010
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN DAVIS COUNTY IN SOUTHEAST IOWA...
WAPELLO COUNTY IN SOUTHEAST IOWA...
* UNTIL 430 PM CDT TUESDAY
* AT 1018 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. ONE TO THREE INCHES OF RAIN ARE EXPECTED THIS MORNING
IN THE WARNED AREA.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OTTUMWA AND ELDON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 4091 9219 4078 9264 4097 9264 4117 9235
4117 9218
$$
JOHNSON3 follow-up statements
074
WGUS73 KDMX 151611
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1111 AM CDT TUE JUN 15 2010
IAC051-179-152130-
/O.CON.KDMX.FF.W.0021.000000T0000Z-100615T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAVIS IA-WAPELLO IA-
1111 AM CDT TUE JUN 15 2010
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WAPELLO AND NORTHWESTERN
DAVIS COUNTIES UNTIL 430 PM CDT...
AT 1109 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. ONE
TO TWO INCHES OF RAIN HAD FALLEN IN THE WARNED AREA BY 1100 AM.
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE THROUGH SOUTHEAST
IOWA THROUGH 1 PM. THE ACTIVITY SHOULD CONTINUE TO WEAKEN BUT AN
ADDITIONAL HALF INCH TO AN INCH CAN BE EXPECTED.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...OTTUMWA
AND ELDON.
NUMEROUS REPORTS OF FLASH FLOODING HAVE BEEN RECEIVED IN THE OTTUMWA
AREA FOR THIS MORNING.
LAT...LON 4091 9219 4078 9264 4097 9264 4117 9235
4117 9218
$$227
WGUS73 KDMX 151703
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1203 PM CDT TUE JUN 15 2010
IAC051-151713-
/O.CAN.KDMX.FF.W.0021.000000T0000Z-100615T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAVIS IA-
1203 PM CDT TUE JUN 15 2010
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN DAVIS
COUNTY IS CANCELLED...
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 4100 9231 4090 9253 4090 9264 4097 9264
4117 9235 4117 9219
$$
IAC179-152130-
/O.CON.KDMX.FF.W.0021.000000T0000Z-100615T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAPELLO IA-
1203 PM CDT TUE JUN 15 2010
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR WAPELLO COUNTY UNTIL 430
PM CDT...
AT 1158 AM CDT...SHOWERS CONTINUED OVER THE WARNED AREA. SHOWERS AND
A FEW THUNDERSTORMS WILL CONTINUE INTO THE AFTERNOON...BUT
ADDITIONAL HEAVY RAINFALL IS NOT EXPECTED.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...PARTS
OF OTTUMWA AND RURAL AREAS WEST AND NORTHWEST OF TOWN. AREAS NEAR
BLAKESBURG SHOULD BE RECEIVING FLASH FLOODING.
FLASH FLOOD CONDITIONS SHOULD SLOWLY IMPROVE THIS AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 4100 9231 4090 9253 4090 9264 4097 9264
4117 9235 4117 9219
$$
JOHNSON141
WGUS73 KDMX 151800
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
100 PM CDT TUE JUN 15 2010
IAC179-151814-
/O.CAN.KDMX.FF.W.0021.000000T0000Z-100615T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WAPELLO IA-
100 PM CDT TUE JUN 15 2010
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR WAPELLO COUNTY IS
CANCELLED...
THIS WARNING INCLUDED OTTUMWA. THE FLASH FLOOD WARNING FOR
NORTHWEST WAPELLO COUNTY WILL REMAIN IN EFFECT.
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 4100 9231 4090 9253 4090 9264 4097 9264
4117 9235 4117 9219
$$
JOHNSONThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 3:29 AM CDT | Areal Flood Advisory | DMX | Black Hawk | 3 hr |
| Jun 15, 3:48 AM CDT | Dense Fog Advisory | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Emmet and 13 more | 3 hr |
| Jun 15, 8:23 AM CDT | River Flood Warning | DMX | Boone, Hamilton, Webster | 19 hr |
| Jun 15, 9:05 AM CDT | Flash Flood Warning | DMX | Appanoose, Decatur, Monroe, Wayne | 6 hr |
| Jun 15, 9:52 AM CDT | Flash Flood Warning | DMX | Mahaska, Monroe, Wapello | 5 hr |
| Jun 15, 10:03 AM CDT | Areal Flood Advisory | DMX | Wapello | 3 hr |
| Jun 15, 10:08 AM CDT | River Flood Warning | DMX | Decatur | 11 hr |
| Jun 15, 10:08 AM CDT | River Flood Warning | DMX | Appanoose, Wayne | 25 hr |
| Jun 15, 11:20 AM CDT | Flash Flood Warning | DMX | Poweshiek | 2 hr |
| Jun 15, 2:15 PM CDT | River Flood Warning | DMX | Wapello | 21 hr |
| Jun 15, 3:04 PM CDT | Areal Flood Warning | DMX | Appanoose, Monroe | 24 hr |
Nearby
Flash Flood Warnings in Iowa, 2010Every flash flood warning in 2010
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.