Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 18, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jul 29, 2016, 7:12 PM CDT for Louisa County, Washington County, Iowa. It was in force for 6 hr. 6 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
- Jul 29, 2016, 7:12 PM CDT (00:12 UTC)
- Expired
- Jul 30, 2016, 1:15 AM CDT
- In force
- 6 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Louisa County, IA, Washington County, IA
The radar
The Quad Cities radar (KDVN), 77 km from the middle of the area, began a volume at 00:15 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 |
|---|---|---|---|
| Jul 29, 7:30 PM CDT | HEAVY RAIN 1 | Wnw Columbus Junction, IA | 90 MINUTE TOTAL |
| Jul 29, 8:19 PM CDT | HEAVY RAIN 4 | 4 N Cotter, IA | |
| Jul 29, 8:25 PM CDT | HEAVY RAIN 4 | 4 N Cotter, IA | RAINFALL OVER THE PAST COUPLE OF HOURS. STILL RAINING LIGHT TO MODERATELY. |
| Jul 29, 8:36 PM CDT | FLASH FLOOD | 4 N Cotter, IA | SOME GRAVEL ROADS WASHED OUT IN THE AREA. |
| Jul 29, 9:21 PM CDT | HEAVY RAIN 1.6 | Wnw Columbus Junction, IA | UPDATED TOTAL...LIGHT RAIN CONTINUES TO FALL |
| Jul 29, 10:12 PM CDT | HEAVY RAIN 1.75 | Wnw Columbus Junction, IA | STORM TOTAL |
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, 0.2 hours before the alert went out and 83 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
- 110 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
839
WGUS53 KDVN 300012
FFWDVN
IAC115-183-300615-
/O.NEW.KDVN.FF.W.0018.160730T0012Z-160730T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
712 PM CDT FRI JUL 29 2016
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN LOUISA COUNTY IN SOUTHEASTERN IOWA...
NORTHEASTERN WASHINGTON COUNTY IN SOUTHEASTERN IOWA...
* UNTIL 115 AM CDT SATURDAY
* AT 710 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN MOVING SLOWLY ACROSS THE WARNED AREA. DOPPLER RADAR
ESTIMATES OVER 2 INCHES OF RAIN HAVE FALLEN BETWEEN RICHMOND
AND HASKINS. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
COLUMBUS JUNCTION...AINSWORTH...COLUMBUS CITY...COTTER...
FREDONIA...GLADWIN...HASKINS AND LOUISA COUNTY FAIRGROUNDS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4145 9161 4141 9138 4134 9137 4133 9136
4130 9121 4114 9123 4135 9168
$$
052 follow-up statements
553
WGUS73 KDVN 300104
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
804 PM CDT FRI JUL 29 2016
IAC115-183-300615-
/O.CON.KDVN.FF.W.0018.000000T0000Z-160730T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LOUISA IA-WASHINGTON IA-
804 PM CDT FRI JUL 29 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM CDT FOR
WESTERN LOUISA AND NORTHEASTERN WASHINGTON COUNTIES...
AT 800 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN PORTIONS OF LOUISA COUNTY. DOPPLER RADAR ESTIMATES 2 TO 3
INCHES OF RAIN HAVE FALLEN FROM SOUTH OF GLADWIN TO NEAR RICHMOND.
THUNDERSTORMS WILL BRING HEAVY RAINFALL TO PORTIONS OF LOUISA COUNTY
OVER THE NEXT HOUR...WITH AROUND AN INCH OF ADDITIONAL RAIN
POSSIBLE. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
COLUMBUS JUNCTION...AINSWORTH...COLUMBUS CITY...COTTER...FREDONIA...
GLADWIN...HASKINS AND LOUISA COUNTY FAIRGROUNDS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4145 9161 4141 9138 4134 9137 4133 9136
4130 9121 4114 9123 4135 9168
$$
05337
WGUS73 KDVN 300240
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
940 PM CDT FRI JUL 29 2016
IAC115-183-300244-
/O.CAN.KDVN.FF.W.0018.000000T0000Z-160730T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LOUISA IA-WASHINGTON IA-
940 PM CDT FRI JUL 29 2016
...THE FLASH FLOOD WARNING FOR WESTERN LOUISA AND NORTHEASTERN
WASHINGTON COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES...AND
AVOID ANY LOW WATER CROSSINGS WHICH MAY STILL BE COVERED WITH WATER
OR WASHED OUT.
LAT...LON 4145 9161 4141 9138 4134 9137 4133 9136
4130 9121 4114 9123 4135 9168
$$
05Nearby
Flash Flood Warnings in Iowa, 2016Every flash flood warning in 2016
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.