Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 29, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Sep 23, 2016, 4:33 AM CDT for 4 counties in Iowa. It was in force for 6 hr. 15 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
- Sep 23, 2016, 4:33 AM CDT (09:33 UTC)
- Expired
- Sep 23, 2016, 10:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Benton County, IA, Iowa County, IA, Johnson County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 117 km from the middle of the area, began a volume at 09:36 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 |
|---|---|---|---|
| Sep 23, 5:13 AM CDT | FLASH FLOOD | Cedar Rapids, IA | ELLIS ROAD WEST OF EDGEWOOD ROAD IS UNDER WATER AND IMPASSABLE |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 1.56 | 2 Ssw Marengo, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 1.7 | 2 Wsw Cedar Rapids, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 1.8 | 1 Ene North Liberty, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 1.85 | Belle Plaine, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 1.93 | Se Ely, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 2.16 | 2 Ne Cedar Rapids, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 2.25 | Marengo, IA | 24-HOUR RAINFALL |
| Sep 23, 7:00 AM CDT | HEAVY RAIN 4.36 | 3 Nw Cedar Rapids, IA | 24-HOUR RAINFALL |
| Sep 23, 7:40 AM CDT | HEAVY RAIN 1.75 | 1 Sse Cedar Rapids, IA | RAINFALL SINCE 240AM |
| Sep 23, 7:40 AM CDT | HEAVY RAIN 3.5 | 1 S Swisher, IA | RAINFALL SINCE 3AM |
| Sep 23, 7:55 AM CDT | HEAVY RAIN 3.43 | Swisher, IA | RAINFALL OVER PAST 5 HOURS |
| Sep 23, 8:19 AM CDT | HEAVY RAIN 2.5 | 4 N Marengo, IA | RAINFALL SINCE 3AM |
| Sep 23, 9:12 AM CDT | HEAVY RAIN 2.5 | Ne Bertram, IA | RAIN HAS ENDED |
| Sep 23, 9:43 AM CDT | FLASH FLOOD | W Amana, IA | FLOODING CONINUES ALONG PRICE CREEK IN THE AMANA COLONIES |
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, 9.6 hours before the alert went out and 123 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
- 580 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
947 WGUS53 KDVN 230933 FFWDVN IAC011-095-103-113-231530- /O.NEW.KDVN.FF.W.0029.160923T0933Z-160923T1530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA/IL 433 AM CDT FRI SEP 23 2016 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN JOHNSON COUNTY IN EAST CENTRAL IOWA... SOUTHERN LINN COUNTY IN EAST CENTRAL IOWA... NORTHERN IOWA COUNTY IN EAST CENTRAL IOWA... SOUTHERN BENTON COUNTY IN EAST CENTRAL IOWA... * UNTIL 1030 AM CDT * AT 431 AM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CEDAR RAPIDS...MARENGO...NORTH LIBERTY...MOUNT VERNON... BELLE PLAINE...LISBON...FAIRFAX...SOLON...ELY...ATKINS...WALFORD... SWISHER...NEWHALL...BLAIRSTOWN...VAN HORNE...KEYSTONE... SHUEYVILLE...NORWAY...BERTRAM AND LADORA. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 4210 9230 4197 9136 4172 9137 4176 9230 $$ GIBBS
2 follow-up statements
742 WGUS73 KDVN 231147 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA/IL 647 AM CDT FRI SEP 23 2016 IAC011-095-103-113-231530- /O.CON.KDVN.FF.W.0029.000000T0000Z-160923T1530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ JOHNSON IA-LINN IA-IOWA IA-BENTON IA- 647 AM CDT FRI SEP 23 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT FOR NORTHERN JOHNSON...SOUTHERN LINN...NORTHERN IOWA AND SOUTHERN BENTON COUNTIES... AT 646 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING IN CEDAR RAPIDS. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS ALREADY OCCURRING. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... CEDAR RAPIDS...MARENGO...NORTH LIBERTY...MOUNT VERNON... BELLE PLAINE...LISBON...FAIRFAX...SOLON...ELY...ATKINS...WALFORD... SWISHER...NEWHALL...BLAIRSTOWN...VAN HORNE...KEYSTONE...SHUEYVILLE... NORWAY...BERTRAM AND LADORA. ADDITIONAL RAINFALL AMOUNTS OF HALF AN INCH ARE POSSIBLE IN THE WARNED AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. && LAT...LON 4210 9230 4197 9136 4172 9137 4176 9230 $$ GIBBS
254 WGUS73 KDVN 231525 FFSDVN FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA/IL 1025 AM CDT FRI SEP 23 2016 IAC011-095-103-113-231531- /O.EXP.KDVN.FF.W.0029.000000T0000Z-160923T1530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ JOHNSON IA-LINN IA-IOWA IA-BENTON IA- 1025 AM CDT FRI SEP 23 2016 ...THE FLASH FLOOD WARNING FOR NORTHERN JOHNSON...SOUTHERN LINN... NORTHERN IOWA AND SOUTHERN BENTON COUNTIES WILL EXPIRE AT 1030 AM CDT... THE HEAVY RAIN HAS ENDED AND ONLY LIGHT ADDITIONAL RAINFALL IS EXPECTED THIS MORNING. FLASH FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. HOWEVER...RIVER FLOODING IS EXPECTED AND MANY AREA STREAMS WILL CONTINUE TO RUN HIGH DUE TO OVERNIGHT RAINFALL AMOUNTS AS HIGH AS 3 TO 5 INCHES. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. IF YOU ENCOUNTER FLOODED ROADS...TURN AROUND...DON'T DROWN. LAT...LON 4210 9230 4197 9136 4172 9137 4176 9230 $$ SHEETS
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 8:59 PM CDT | Flash Flood Watch | DVN | Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more | 13 hr |
| Sep 22, 9:48 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Dubuque, Jackson | 6 hr |
| Sep 23, 1:55 AM CDT | Special Weather Statement | DVN | Jones, Linn | 50 min |
| Sep 23, 2:42 AM CDT | River Flood Warning | DVN | Delaware, Jones | 57 hr |
| Sep 23, 3:38 AM CDT | Flash Flood Warning | DVN | Buchanan, Delaware | 6 hr |
| Sep 23, 4:24 AM CDT | Special Weather Statement | DVN | Iowa, Johnson | 51 min |
| Sep 23, 9:46 AM CDT | River Flood Watch | DVN | Jackson | 4 days |
| Sep 23, 10:26 AM CDT | River Flood Warning | DVN | Buchanan, Linn | 6 days |
| Sep 23, 10:26 AM CDT | River Flood Warning | DVN | Cedar, Jones, Linn | 8 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Clinton, Scott | 12 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Scott | 11 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Muscatine, Scott | 13 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Muscatine | 14 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 15 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Louisa | 16 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 17 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Des Moines | 18 days |
| Sep 23, 11:56 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 18 days |
Nearby
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.