Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 17, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Aug 1, 2016, 9:02 AM CDT for 5 counties in 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
- Aug 1, 2016, 9:02 AM CDT (14:02 UTC)
- Expired
- Aug 1, 2016, 3:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Adair County, IA, Guthrie County, IA, Madison County, IA, Ringgold County, IA, Union County, IA
The radar
The Des Moines radar (KDMX), 78 km from the middle of the area, began a volume at 14:02 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 |
|---|---|---|---|
| Aug 1, 10:42 AM CDT | HEAVY RAIN 4.66 | 2 Nne Casey, IA | VIEWER MEASUREMENT RELAYED BY KCCI-TV. |
| Aug 1, 2:20 PM CDT | HEAVY RAIN 5.2 | Greenfield, IA | VIEWER MEASUREMENT RELAYED BY WHO-TV. |
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, 2.0 hours before the alert went out and 165 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
- 780 J/kg
- Mixed-layer CIN
- -471 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 465 m²/s²
- 0-3 km storm-relative helicity
- 494 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
615
WGUS53 KDMX 011402
FFWDMX
IAC001-077-121-159-175-012000-
/O.NEW.KDMX.FF.W.0017.160801T1402Z-160801T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
902 AM CDT MON AUG 1 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN MADISON COUNTY IN SOUTH CENTRAL IOWA...
SOUTHERN GUTHRIE COUNTY IN WEST CENTRAL IOWA...
UNION COUNTY IN SOUTH CENTRAL IOWA...
NORTHERN RINGGOLD COUNTY IN SOUTH CENTRAL IOWA...
ADAIR COUNTY IN SOUTHWESTERN IOWA...
* UNTIL 300 PM CDT
* AT 901 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. AS MUCH AS 5 TO 6 INCHES OF
RAIN HAS FALLEN OVER THE PAST 6 HOURS...WITH THE HEAVIEST AMOUNTS
IN SOUTHERN ADAIR AND NORTHERN UNION COUNTIES. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CRESTON...GREENFIELD...STUART...GREEN VALLEY LAKE...AFTON...
ADAIR...FONTANELLE...CASEY...ORIENT...LORIMOR...MENLO...
MACKSBURG...CROMWELL...ARISPE...SHANNON CITY...KENT...THAYER...
GREENFIELD MUNICIPAL AIRPORT...NODAWAY PARK AND GREEN VALLEY LAKE
STATE PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4116 9447 4116 9458 4141 9470 4162 9469
4168 9442 4131 9416 4116 9401 4088 9401
4088 9447
$$
ZOGG1 follow-up statement
370
WGUS73 KDMX 011717
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1217 PM CDT MON AUG 1 2016
IAC001-077-121-159-175-012000-
/O.CON.KDMX.FF.W.0017.000000T0000Z-160801T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MADISON IA-GUTHRIE IA-UNION IA-RINGGOLD IA-ADAIR IA-
1217 PM CDT MON AUG 1 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM CDT FOR
SOUTHWESTERN MADISON...SOUTHERN GUTHRIE...UNION...NORTHERN RINGGOLD
AND ADAIR COUNTIES...
AT 1212 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS CONTINUING TO
PRODUCE HEAVY RAIN ACROSS THE WARNED AREA. RADAR ESTIMATES INDICATE
THAT AS MUCH AS 4 TO 6.5 INCHES HAS FALLEN ACROSS THE WARNED AREA.
ALTHOUGH NO REPORTS OF FLASH FLOODING HAVE BEEN RECEIVED YET...FLASH
FLOODING REMAINS A DISTRICT POSSIBILITY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CRESTON...GREENFIELD...STUART...GREEN VALLEY LAKE...AFTON...ADAIR...
FONTANELLE...CASEY...ORIENT...LORIMOR...MENLO...MACKSBURG...
CROMWELL...ARISPE...SHANNON CITY...KENT...THAYER...GREENFIELD
MUNICIPAL AIRPORT...NODAWAY PARK AND GREEN VALLEY LAKE STATE PARK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4116 9447 4116 9458 4141 9470 4162 9469
4168 9442 4131 9416 4116 9401 4088 9401
4088 9447
$$
ZOGGThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 4:08 AM CDT | Flash Flood Warning | DMX | Ringgold, Taylor | 6 hr |
| Aug 1, 7:36 AM CDT | Special Weather Statement | DMX | Calhoun, Carroll, Greene, Pocahontas, Sac | 54 min |
| Aug 1, 10:12 AM CDT | Areal Flood Warning | DMX | Ringgold, Taylor | 24 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.