Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 16, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jul 23, 2016, 4:40 PM CDT for Dubuque County, Jackson County, Jones 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
- Jul 23, 2016, 4:40 PM CDT (21:40 UTC)
- Expired
- Jul 23, 2016, 10:45 PM CDT
- In force
- 6 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Dubuque County, IA, Jackson County, IA, Jones County, IA
The radar
The Quad Cities radar (KDVN), 87 km from the middle of the area, began a volume at 21:40 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 23, 5:50 PM CDT | FLASH FLOOD | Dubuque, IA | DOWNTOWN DUBUQUE HAS WATER OVER SEVERAL ROADS INCLUDING CENTRAL AVENUE AND JACKSON STREETS WITH SEVERAL STREETS CLOSED. |
| Jul 23, 6:30 PM CDT | FLASH FLOOD | Monticello, IA | 1.5 FEET OF WATER ON TRACK AT FAIRGROUNDS. |
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, 9.7 hours before the alert went out and 86 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
- 2607 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
756
WGUS53 KDVN 232140
FFWDVN
IAC061-097-105-240345-
/O.NEW.KDVN.FF.W.0016.160723T2140Z-160724T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
440 PM CDT SAT JUL 23 2016
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
DUBUQUE COUNTY IN NORTHEASTERN IOWA...
NORTHERN JONES COUNTY IN EAST CENTRAL IOWA...
JACKSON COUNTY IN EAST CENTRAL IOWA...
* UNTIL 1045 PM CDT SATURDAY
* AT 438 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
PRODUCING TORRENTIAL RAIN MOVING INTO THE WARNED AREA. UP TO THREE
INCHES OF RAIN IN ONE HOUR IS EXPECTED. FLASH FLOODING IS EXPECTED
TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DUBUQUE...ANAMOSA...ASBURY...DYERSVILLE...MONTICELLO...BELLEVUE...
CASCADE...EPWORTH...EAST DUBUQUE...FARLEY...PEOSTA...ANDREW...
NEW VIENNA...WORTHINGTON...HOLY CROSS...LA MOTTE...LUXEMBURG...
ONSLOW...RICKARDSVILLE AND SHERRILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
&&
LAT...LON 4263 9071 4254 9064 4247 9065 4244 9057
4242 9055 4235 9044 4233 9042 4228 9043
4223 9040 4216 9022 4212 9016 4209 9016
4210 9137 4229 9136 4230 9113 4265 9113
4265 9090 4267 9089
$$
HAASE3 follow-up statements
954
WGUS73 KDVN 232314
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
614 PM CDT SAT JUL 23 2016
IAC061-097-105-240345-
/O.CON.KDVN.FF.W.0016.000000T0000Z-160724T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE IA-JONES IA-JACKSON IA-
614 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
DUBUQUE...NORTHERN JONES AND JACKSON COUNTIES...
AT 612 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE ALREADY
FALLEN AT SOME LOCATIONS. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES IS POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4263 9071 4254 9064 4247 9065 4244 9057
4242 9055 4235 9044 4233 9042 4228 9043
4223 9040 4216 9022 4212 9016 4209 9016
4210 9137 4229 9136 4230 9113 4265 9113
4265 9090 4267 9089
$$
HAASE216
WGUS73 KDVN 240056
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
756 PM CDT SAT JUL 23 2016
IAC061-097-240101-
/O.CAN.KDVN.FF.W.0016.000000T0000Z-160724T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DUBUQUE IA-JACKSON IA-
756 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING FOR DUBUQUE AND JACKSON COUNTIES IS
CANCELLED...
HEAVY RAINFALL HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A THREAT.
LAT...LON 4210 9090 4210 9137 4229 9136 4230 9120
4229 9090
$$
IAC105-240345-
/O.CON.KDVN.FF.W.0016.000000T0000Z-160724T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JONES IA-
756 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
NORTHERN JONES COUNTY...
AT 751 PM CDT...HEAVY RAINFALL HAS ENDED. HOWEVER, THE EMERGENCY MANAGER REPORTED
EXTENSIVE RUNOFF WAS FLOWING OUT OF CORNFIELDS, CREEKS AND SMALL STREAMS
AND ONTO ROADWAYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4210 9090 4210 9137 4229 9136 4230 9120
4229 9090
$$
HAASE117
WGUS73 KDVN 240342
FFSDVN
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1042 PM CDT SAT JUL 23 2016
IAC105-240351-
/O.EXP.KDVN.FF.W.0016.000000T0000Z-160724T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JONES IA-
1042 PM CDT SAT JUL 23 2016
...THE FLASH FLOOD WARNING FOR NORTHERN JONES COUNTY WILL EXPIRE AT
1045 PM CDT...
FLOOD WATERS ARE RECEDING...AND THE FLASH FLOOD WARNING WILL BE
ALLOWED TO EXPIRE. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES.
LAT...LON 4210 9090 4210 9137 4229 9136 4230 9120
4229 9090
$$
DMDThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 2:30 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 45 min |
| Jul 23, 3:13 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 62 min |
| Jul 23, 3:18 PM CDT | Tornado Warning | DVN | Buchanan | 57 min |
| Jul 23, 3:52 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque, Jones, Linn | 53 min |
| Jul 23, 4:00 PM CDT | Tornado Warning | DVN | Delaware | 45 min |
| Jul 23, 4:04 PM CDT | Flash Flood Warning | DVN | Buchanan | 6 hr |
| Jul 23, 4:22 PM CDT | Flash Flood Warning | DVN | Delaware | 6 hr |
| Jul 23, 4:26 PM CDT | Tornado Warning | DVN | Delaware | 20 min |
| Jul 23, 4:35 PM CDT | Tornado Warning | DVN | Dubuque, Jackson | 55 min |
| Jul 23, 4:38 PM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones | 67 min |
| Jul 23, 4:59 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 61 min |
| Jul 23, 5:12 PM CDT | Tornado Warning | DVN | Jackson, Jones | 63 min |
| Jul 23, 6:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 67 min |
| Jul 23, 6:46 PM CDT | Special Weather Statement | DVN | Clinton | 59 min |
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.