Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 14, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 19, 2016, 1:34 PM CDT for 4 counties in Iowa. It was in force for 6 hr. 8 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 19, 2016, 1:34 PM CDT (18:34 UTC)
- Expired
- Jul 19, 2016, 7:30 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Madison County, IA, Mahaska County, IA, Marion County, IA, Warren County, IA
The radar
The Des Moines radar (KDMX), 48 km from the middle of the area, began a volume at 18:34 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 19, 2:20 PM CDT | FLASH FLOOD | 1 Nw Knoxville, IA | LAW ENFORCEMENT REPORTED WATER COVERING HIGHWAY 14 OUTSIDE KNOXVILLE RACEWAY. TIME ESTIMATED FROM RADAR. DELAYED REPORT. |
| Jul 19, 3:15 PM CDT | FLASH FLOOD | 3 Wnw Milo, IA | EMERGENCY MANAGER RELAYED REPORT OF ROAD CLOSURE OF 158TH AVE SOUTH OF NEWBOLD ST. . |
| Jul 19, 5:20 PM CDT | HEAVY RAIN 2.1 | 1 W New Virginia, IA | TRAINED SPOTTER REPORTED HEAVY RAINFALL OF 2.10 INCHES STORM TOTAL. . |
| Jul 19, 5:30 PM CDT | HEAVY RAIN 2.65 | Knoxville, IA | TRAINED SPOTTER REPORTED HEAVY RAINFALL OF 2.65 INCHES EVENT TOTAL. |
| Jul 19, 7:00 PM CDT | HEAVY RAIN 3 | Knoxville, IA | END TIME ESTIMATED FROM RADAR. |
| Jul 19, 7:00 PM CDT | HEAVY RAIN 3.27 | 3 Ene Lacona, IA | END TIME ESTIMATED FROM RADAR. |
| Jul 19, 7:00 PM CDT | HEAVY RAIN 3.3 | 6 Se Melcher-Dallas, IA | CO-OP OBSERVER STATION COLUMBIA /CMBI4/. |
| Jul 19, 7:00 PM CDT | HEAVY RAIN 3.6 | 2 S Pella, IA | END TIME ESTIMATED FROM RADAR. |
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, 6.6 hours before the alert went out and 239 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
- 1546 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 992 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.9
The text
As transmitted.
644
WGUS53 KDMX 191834
FFWDMX
IAC121-123-125-181-200030-
/O.NEW.KDMX.FF.W.0014.160719T1834Z-160720T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
134 PM CDT TUE JUL 19 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
MARION COUNTY IN SOUTH CENTRAL IOWA...
SOUTHEASTERN MADISON COUNTY IN SOUTH CENTRAL IOWA...
SOUTHWESTERN MAHASKA COUNTY IN SOUTH CENTRAL IOWA...
WARREN COUNTY IN SOUTH CENTRAL IOWA...
* UNTIL 730 PM CDT
* AT 133 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. ONE TO THREE INCHES OF RAIN
HAVE ALREADY FALLEN. AN ADDITIONAL 1 TO 3 INCHES MAY OCCUR. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
INDIANOLA...PELLA...KNOXVILLE...WINTERSET...PLEASANTVILLE...
MELCHER-DALLAS...KNOXVILLE RACEWAY...LAKE RED ROCK...AVENUE OF THE
SAINTS EVENT CENTER...MILO...ST. CHARLES...NEW VIRGINIA...TRURO...
MARTENSDALE...BUSSEY...LACONA...HARVEY...PATTERSON...HAMILTON AND
ST. MARYS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4116 9406 4141 9406 4141 9334 4151 9333
4150 9286 4116 9286
$$
DONAVON1 follow-up statement
857
WGUS73 KDMX 192316
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
616 PM CDT TUE JUL 19 2016
IAC121-123-125-181-192325-
/O.CAN.KDMX.FF.W.0014.000000T0000Z-160720T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARION IA-MADISON IA-MAHASKA IA-WARREN IA-
616 PM CDT TUE JUL 19 2016
...THE FLASH FLOOD WARNING FOR MARION...SOUTHEASTERN MADISON...
SOUTHWESTERN MAHASKA AND WARREN COUNTIES IS CANCELLED...
THE HEAVY RAIN HAS ENDED. FLOOD WATERS HAVE RECEDED. FLOODING IS NO
LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.
LAT...LON 4116 9406 4141 9406 4141 9334 4151 9333
4150 9286 4116 9286
$$
KOTENBERGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 3:36 AM CDT | Flash Flood Watch | DMX | Appanoose, Boone, Calhoun, Cerro Gordo, Clarke, Dallas and 18 more | 24 hr |
| Jul 19, 7:37 AM CDT | Special Weather Statement | DMX | Calhoun, Humboldt, Pocahontas, Webster | 53 min |
| Jul 19, 10:14 AM CDT | Flash Flood Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 6 hr |
| Jul 19, 11:39 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 51 min |
| Jul 19, 12:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Guthrie | 40 min |
| Jul 19, 12:36 PM CDT | Flash Flood Warning | DMX | Dallas, Madison, Polk, Warren | 6 hr |
| Jul 19, 1:01 PM CDT | Special Weather Statement | DMX | Madison, Union | 59 min |
| Jul 19, 1:10 PM CDT | Special Weather Statement | DMX | Lucas, Mahaska, Marion, Monroe, Wapello, Warren | 50 min |
| Jul 19, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Ringgold, Union, Warren and 1 more | 42 min |
| Jul 19, 1:55 PM CDT | River Flood Warning | DMX | Dallas, Polk | 29 hr |
| Jul 19, 2:07 PM CDT | River Flood Warning | DMX | Black Hawk | 4 days |
| Jul 19, 2:08 PM CDT | Tornado Warning | DMX | Lucas, Monroe | 52 min |
| Jul 19, 2:11 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Clarke, Decatur, Lucas, Monroe, Wayne | 49 min |
| Jul 19, 2:46 PM CDT | River Flood Warning | DMX | Polk | 28 hr |
| Jul 19, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wayne | 33 min |
| Jul 19, 2:59 PM CDT | Flash Flood Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Wayne | 6 hr |
| Jul 19, 3:11 PM CDT | Tornado Warning | DMX | Monroe | 34 min |
| Jul 19, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 39 min |
| Jul 19, 4:24 PM CDT | Excessive Heat Watch | DMX | Adair, Adams, Appanoose, Boone, Clarke, Dallas and 17 more | 12 hr |
| Jul 19, 4:24 PM CDT | Excessive Heat Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 4 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.