Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 3, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 26, 2016, 6:03 PM CDT for Cass County, Iowa. It was in force for 6 hr. 3 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
- May 26, 2016, 6:03 PM CDT (23:03 UTC)
- Expired
- May 27, 2016, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Cass County, IA
The radar
The Des Moines radar (KDMX), 109 km from the middle of the area, began a volume at 23:05 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 |
|---|---|---|---|
| May 26, 7:14 PM CDT | FLASH FLOOD | 1 Ne Atlantic, IA | IOWA DEPT OF TRANSPORTATION ADVISED FLASH FLOODING COVERED ALL LANES OF US HWY 6 FROM MILE MARKERS 53 TO 54.5 IN ATLANTIC. ROAD WAS BLOCKED IN BOTH DIRECTIONS DUE TO THE WATER OVER THE ROAD. |
| May 26, 7:35 PM CDT | FLASH FLOOD | Atlantic, IA | ATLANTIC NEWS TELEGRAPH NEWSPAPER ADVISED SEVERAL STREETS IN ATLANTIC CLOSED DUE TO FLASH FLOODING...INCLUDING PORTIONS OF US HWY 6 WHICH HAD OVER 6 INCHES OF FLOWING WATER. |
| May 26, 8:30 PM CDT | HEAVY RAIN 4.34 | 1 E Atlantic, IA | RAINFALL THUS FAR THIS AFTERNOON AND EVENING ENDING AT 830 PM CDT. MESONET STATION 1 E ATLANTIC /E6210/. |
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, 11.1 hours before the alert went out and 119 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1783 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -107 m²/s²
- 0-3 km storm-relative helicity
- -78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
858
WGUS53 KDMX 262303
FFWDMX
IAC029-270500-
/O.NEW.KDMX.FF.W.0003.160526T2303Z-160527T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
603 PM CDT THU MAY 26 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CASS COUNTY IN SOUTHWESTERN IOWA...
* UNTIL MIDNIGHT CDT
* AT 602 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN. ADDITIONAL RAINFALL AS HIGH AS 1 TO 2 INCHES IS
POSSIBLE TONIGHT. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. THE
AREAS OF MOST CONCERN PRESENTLY INCLUDE NORTH CENTRAL PORTIONS OF
CASS COUNTY...BETWEEN ATLANTIC AND ANITA...INCLUDING THE WIOTA
AREA.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ATLANTIC...GRISWOLD...ANITA...LEWIS...MASSENA...CUMBERLAND...
MARNE...WIOTA...COLD SPRINGS STATE PARK...
ANITA MUNICIPAL AIRPORT...LAKE ANITA STATE PARK...
GRISWOLD PARK AND ATLANTIC MUNICIPAL AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 4147 9515 4151 9484 4150 9470 4125 9470
4118 9516
$$
ZOGG2 follow-up statements
565
WGUS73 KDMX 270052
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
752 PM CDT THU MAY 26 2016
IAC029-270500-
/O.CON.KDMX.FF.W.0003.000000T0000Z-160527T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CASS IA-
752 PM CDT THU MAY 26 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT FOR
CASS COUNTY...
AT 735 PM CDT...SEVERAL STREETS WERE REPORTED CLOSED IN THE CITY OF
ATLANTIC DUE TO FLASH FLOODING...INCLUDING PORTIONS OF U.S. HIGHWAY
6 WHICH HAD OVER SIX INCHES OF FLOWING WATER. TOTAL RAINFALL ACROSS
THE WARNED AREA IS ESTIMATED AS HIGH AS 2.5 TO 3 OR MORE
INCHES...WITH THE HEAVIEST AMOUNTS FALLING FROM THE ATLANTIC TO
ANITA AREAS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ATLANTIC...GRISWOLD...ANITA...LEWIS...MASSENA...CUMBERLAND...MARNE...
WIOTA...COLD SPRINGS STATE PARK...ANITA MUNICIPAL AIRPORT...
LAKE ANITA STATE PARK...GRISWOLD PARK AND ATLANTIC MUNICIPAL AIRPORT.
ADDITIONAL RAINFALL AMOUNTS OF 1 OR MORE INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4147 9515 4151 9484 4150 9470 4125 9470
4118 9516
$$
ZOGG104
WGUS73 KDMX 270340
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1040 PM CDT THU MAY 26 2016
IAC029-270349-
/O.CAN.KDMX.FF.W.0003.000000T0000Z-160527T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CASS IA-
1040 PM CDT THU MAY 26 2016
...THE FLASH FLOOD WARNING FOR CASS COUNTY IS CANCELLED...
THE HEAVY RAIN HAS ENDED AND FLOOD WATERS HAVE RECEDED. FLOODING IS
NO LONGER EXPECTED TO POSE A THREAT. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.
LAT...LON 4147 9515 4151 9484 4150 9470 4125 9470
4118 9516
$$
ZOGGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 10:13 PM CDT | Special Weather Statement | DMX | Emmet | 62 min |
| May 25, 10:16 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 44 min |
| May 25, 11:13 PM CDT | Special Weather Statement | DMX | Emmet | 32 min |
| May 26, 12:17 AM CDT | Special Weather Statement | DMX | Adams, Decatur, Ringgold, Taylor, Union | 58 min |
| May 26, 12:45 AM CDT | Special Weather Statement | DMX | Emmet, Kossuth, Palo Alto | 60 min |
| May 26, 1:00 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 45 min |
| May 26, 1:11 AM CDT | Special Weather Statement | DMX | Appanoose, Wayne | 64 min |
| May 26, 1:41 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 34 min |
| May 26, 1:56 AM CDT | Special Weather Statement | DMX | Carroll, Crawford, Sac | 64 min |
| May 26, 2:10 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Carroll, Cass, Crawford, Greene and 1 more | 50 min |
| May 26, 2:30 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk | 45 min |
| May 26, 2:42 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 28 min |
| May 26, 2:54 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Dallas, Greene, Guthrie and 4 more | 51 min |
| May 26, 3:21 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 39 min |
| May 26, 3:36 AM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story | 39 min |
| May 26, 4:01 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 29 min |
| May 26, 4:19 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Tama | 26 min |
| May 26, 6:08 PM CDT | Special Weather Statement | DMX | Boone, Dallas | 37 min |
| May 26, 6:37 PM CDT | Special Weather Statement | DMX | Warren | 53 min |
| May 26, 6:49 PM CDT | Special Weather Statement | DMX | Polk | 26 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.