Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 11, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Jul 18, 2016, 3:53 AM CDT for 5 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 18, 2016, 3:53 AM CDT (08:53 UTC)
- Expired
- Jul 18, 2016, 10:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Adams County, IA, Cass County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA
The radar
The Des Moines radar (KDMX), 117 km from the middle of the area, began a volume at 08:56 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 18, 5:04 AM CDT | FLASH FLOOD | Bedford, IA | ROAD CLOSED AT INTERSECTION FO COURT AVENUE AND NORTH STEET FROM FLASH FLOODING. . |
| Jul 18, 6:35 AM CDT | HEAVY RAIN 3.95 | 1 W Blockton, IA | TOTAL RAINFALL FROM LAST NIGHT'S STORMS. |
| Jul 18, 7:15 AM CDT | HEAVY RAIN 3.5 | Mount Ayr, IA | TOTAL OVERNIGHT RAINFALL. |
| Jul 18, 7:16 AM CDT | FLASH FLOOD | 1 S Corning, IA | WATER FLOWING OVER THE ROAD ON LOOMIS STREET NORTH OF HWY 34. ROAD CLOSED DUE TO THE HIGH WATER. . |
| Jul 18, 7:30 AM CDT | HEAVY RAIN 5.2 | Bedford, IA | . |
| Jul 18, 7:50 AM CDT | HEAVY RAIN 3.1 | Corning, IA | OVERNIGHT RAINFALL. |
| Jul 18, 9:00 AM CDT | HEAVY RAIN 2.83 | 1 Ne Creston, IA | RAINFALL TOTAL FROM LAST NIGHT. |
| Jul 18, 9:00 AM CDT | HEAVY RAIN 3.78 | 5 N New Market, IA | RAINFALL TOTAL FROM LAST NIGHT. |
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 00:00Z, 8.9 hours before the alert went out and 145 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
- 1666 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1396 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.3
The text
As transmitted.
418
WGUS53 KDMX 180853
FFWDMX
IAC003-029-159-173-175-181500-
/O.NEW.KDMX.FF.W.0011.160718T0853Z-160718T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
353 AM CDT MON JUL 18 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
TAYLOR COUNTY IN SOUTHWESTERN IOWA...
UNION COUNTY IN SOUTH CENTRAL IOWA...
SOUTHERN CASS COUNTY IN SOUTHWESTERN IOWA...
RINGGOLD COUNTY IN SOUTH CENTRAL IOWA...
ADAMS COUNTY IN SOUTHWESTERN IOWA...
* UNTIL 1000 AM CDT MONDAY
* AT 353 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. TWO TO FOUR INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CRESTON...MOUNT AYR...CORNING...BEDFORD...LENOX...GRISWOLD...LAKE
ICARIA...GREEN VALLEY LAKE...SUN VALLEY LAKE...AFTON...LEWIS...NEW
MARKET...CLEARFIELD...DIAGONAL...PRESCOTT...BLOCKTON...GRAVITY...
TINGLEY...NODAWAY AND CROMWELL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4058 9492 4116 9493 4116 9516 4133 9515
4117 9470 4116 9470 4115 9429 4093 9403
4057 9422
$$
COGIL3 follow-up statements
317
WGUS73 KDMX 181046
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
546 AM CDT MON JUL 18 2016
IAC003-029-159-173-175-181500-
/O.CON.KDMX.FF.W.0011.000000T0000Z-160718T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAYLOR IA-UNION IA-CASS IA-RINGGOLD IA-ADAMS IA-
546 AM CDT MON JUL 18 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR
TAYLOR...UNION...SOUTHERN CASS...RINGGOLD AND ADAMS COUNTIES...
AT 542 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. TWO TO FIVE INCHES OF RAIN HAVE
FALLEN WITH ADDITIONAL HEAVY RAIN EXPECTED OVER THE NEXT TWO HOURS.
FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY OR IS ALREADY OCCURRING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MOUNT AYR...CORNING...BEDFORD...GRISWOLD...LAKE ICARIA...GREEN VALLEY
LAKE...SUN VALLEY LAKE...LEWIS...NEW MARKET...CLEARFIELD...
DIAGONAL...BLOCKTON...GRAVITY...TINGLEY...NODAWAY AND CROMWELL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4058 9492 4116 9493 4116 9516 4133 9515
4117 9470 4116 9470 4115 9429 4093 9403
4057 9422
$$
COGIL779
WGUS73 KDMX 181257
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
757 AM CDT MON JUL 18 2016
IAC003-029-159-173-175-181500-
/O.CON.KDMX.FF.W.0011.000000T0000Z-160718T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAYLOR IA-UNION IA-CASS IA-RINGGOLD IA-ADAMS IA-
757 AM CDT MON JUL 18 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT FOR
TAYLOR...UNION...SOUTHERN CASS...RINGGOLD AND ADAMS COUNTIES...
AT 756 AM CDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING IN
PORTIONS OF ADAMS AND TAYLOR COUNTIES. TWO TO SIX INCHES OF RAIN HAVE
FALLEN. FLASH FLOODING IS OCCURRING.
WHILE THE HEAVIEST RAIN IS OVER...FLASH FLOODING WILL CONTINUE
ACROSS THE WARNING AREA THROUGH MID MORNING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CRESTON...MOUNT AYR...CORNING...BEDFORD...LENOX...GRISWOLD...LAKE
ICARIA...GREEN VALLEY LAKE...SUN VALLEY LAKE...AFTON...LEWIS...NEW
MARKET...CLEARFIELD...DIAGONAL...PRESCOTT...BLOCKTON...GRAVITY...
TINGLEY...NODAWAY AND CROMWELL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4058 9492 4116 9493 4116 9516 4133 9515
4117 9470 4116 9470 4115 9429 4093 9403
4057 9422
$$
COGIL348
WGUS73 KDMX 181501
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1001 AM CDT MON JUL 18 2016
IAC003-029-159-173-175-181508-
/O.EXP.KDMX.FF.W.0011.000000T0000Z-160718T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAYLOR IA-UNION IA-CASS IA-RINGGOLD IA-ADAMS IA-
1001 AM CDT MON JUL 18 2016
...THE FLASH FLOOD WARNING FOR TAYLOR...UNION...SOUTHERN CASS...
RINGGOLD AND ADAMS COUNTIES WILL EXPIRE AT 1000 AM CDT...
THE HEAVY RAIN HAS ENDED. LOCAL EMERGENCY MANAGEMENT AND LAW
ENFORCEMENT REPORT NO SIGNIFICANT FLOODING IS CURRENTLY ONGOING AND
FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO
HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4058 9492 4116 9493 4116 9516 4133 9515
4117 9470 4116 9470 4115 9429 4093 9403
4057 9422
$$
DONAVONThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:15 AM CDT | Special Weather Statement | DMX | Adams, Taylor | 45 min |
| Jul 18, 12:57 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams | 26 min |
| Jul 18, 1:21 AM CDT | Severe Thunderstorm Warning | DMX | Taylor | 39 min |
| Jul 18, 1:37 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 38 min |
| Jul 18, 1:39 AM CDT | Flash Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 21 more | 7 hr |
| Jul 18, 1:41 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 29 min |
| Jul 18, 4:12 AM CDT | Special Weather Statement | DMX | Tama | 63 min |
| Jul 18, 4:33 AM CDT | Special Weather Statement | DMX | Polk | 57 min |
| Jul 18, 3:43 PM CDT | Excessive Heat Watch | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 36 hr |
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.