Alert archive / Iowa / Flash Flood Warnings in 2016
Flash Flood Warning 21, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Aug 24, 2016, 12:29 AM CDT for Winnebago County, Worth County, Iowa. It was in force for 6 hr. 6 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 24, 2016, 12:29 AM CDT (05:29 UTC)
- Expired
- Aug 24, 2016, 6:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Winnebago County, IA, Worth County, IA
The radar
The Minneapolis radar (KMPX), 168 km from the middle of the area, began a volume at 05:33 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 24, 1:30 AM CDT | FLASH FLOOD | 3 N Hanlontown, IA | A 1 MILE STRETCH ALONG 390TH STREET NEAR THE INTERSECTION OF GROUSE AVENUE AND 390TH STREET WAS CLOSED/BLOCKED OFF DUE TO WATER OVER ROAD. TIME ESTIMATED BY RADAR. DELAYED REPORT. |
| Aug 24, 2:00 AM CDT | HEAVY RAIN 3.88 | Grafton, IA | STORM TOTAL RAINFALL SINCE EARLY TUE EVENING. |
| Aug 24, 2:00 AM CDT | HEAVY RAIN 4.55 | Northwood, IA | STORM TOTAL. END TIME ESTIMATED BASED ON RADAR. THE DURATION OF THE HEAVY RAIN EVENT WAS 9 HOURS. |
| Aug 24, 2:00 AM CDT | HEAVY RAIN 5 | Northwood, IA | STORM TOTAL. END TIME ESTIMATED BASED ON RADAR. THE DURATION OF THE HEAVY RAIN EVENT WAS 9 HOURS. |
| Aug 24, 3:00 AM CDT | HEAVY RAIN 3.53 | Lake Mills, IA | STORM TOTAL. END TIME ESTIMATED BASED ON RADAR. THE DURATION OF THE HEAVY RAIN EVENT WAS 11 HOURS. |
| Aug 24, 3:00 AM CDT | HEAVY RAIN 3.53 | Lake Mills, IA | STORM TOTAL. END TIME ESTIMATED BASED ON RADAR. THE DURATION OF THE HEAVY RAIN EVENT WAS 11 HOURS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 5.5 hours before the alert went out and 168 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
- 172 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
945
WGUS53 KDMX 240529
FFWDMX
IAC189-195-241130-
/O.NEW.KDMX.FF.W.0021.160824T0529Z-160824T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1229 AM CDT WED AUG 24 2016
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN WINNEBAGO COUNTY IN NORTH CENTRAL IOWA...
WORTH COUNTY IN NORTH CENTRAL IOWA...
* UNTIL 630 AM CDT WEDNESDAY
* AT 1229 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FOREST CITY...NORTHWOOD...LAKE MILLS...MANLY...EMMONS...RICE
LAKE...FERTILE...LELAND...KENSETT...GRAFTON...HANLONTOWN...JOICE...
SCARVILLE...BOLAN...LAKE MILLS MUNICIPAL AIRPORT...RICE LAKE STATE
PARK...HOGSBACK WILDLIFE AREA AND NORTHWOOD MUNICIPAL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4326 9302 4326 9360 4330 9368 4350 9375
4350 9303
$$
PODRAZIK2 follow-up statements
865
WGUS73 KDMX 240626
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
126 AM CDT WED AUG 24 2016
IAC189-195-241130-
/O.CON.KDMX.FF.W.0021.000000T0000Z-160824T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO IA-WORTH IA-
126 AM CDT WED AUG 24 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR
EASTERN WINNEBAGO AND WORTH COUNTIES...
AT 125 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY
FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FOREST CITY...NORTHWOOD...LAKE MILLS...MANLY...EMMONS...RICE LAKE...
FERTILE...LELAND...KENSETT...GRAFTON...HANLONTOWN...JOICE...
SCARVILLE...BOLAN...LAKE MILLS MUNICIPAL AIRPORT...RICE LAKE STATE
PARK...HOGSBACK WILDLIFE AREA AND NORTHWOOD MUNICIPAL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4326 9302 4326 9360 4330 9368 4350 9375
4350 9303
$$
PODRAZIK749
WGUS73 KDMX 240933
FFSDMX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
433 AM CDT WED AUG 24 2016
IAC189-195-241130-
/O.CON.KDMX.FF.W.0021.000000T0000Z-160824T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO IA-WORTH IA-
433 AM CDT WED AUG 24 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR
EASTERN WINNEBAGO AND WORTH COUNTIES...
AT 428 AM CDT...ALTHOUGH THE HEAVY RAINS HAVE ENDED FOR THE NIGHT,
DOPPLER RADAR ESTIMATES AND SPOTTER REPORTS INDICATED THAT THREE TO
FOUR INCHES OF RAIN HAS FALLEN ACROSS PORTIONS OF THE WARNED AREA
OVER THE PAST SIX HOURS. FLASH FLOODING MAY BE IN PROGRESS OR BEGIN
SHORTLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FOREST CITY...NORTHWOOD...LAKE MILLS...MANLY...EMMONS...RICE LAKE...
FERTILE...LELAND...KENSETT...GRAFTON...HANLONTOWN...JOICE...
SCARVILLE...BOLAN...LAKE MILLS MUNICIPAL AIRPORT...
RICE LAKE STATE PARK...
HOGSBACK WILDLIFE AREA AND NORTHWOOD MUNICIPAL. STREAMS AFFECTED MAY
INCLUDE GOOSE CREEK...
LIME CREEK AND SMALLER TRIBUTARIES OF THE SHELL ROCK RIVER.
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.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.
&&
LAT...LON 4326 9302 4326 9360 4330 9368 4350 9375
4350 9303
$$
SMALLThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 9:36 PM CDT | Special Weather Statement | DMX | Winnebago | 24 min |
| Aug 23, 10:57 PM CDT | Special Weather Statement | DMX | Cass | 63 min |
| Aug 23, 11:08 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Cass | 37 min |
| Aug 23, 11:45 PM CDT | Special Weather Statement | DMX | Winnebago, Worth | 60 min |
| Aug 24, 12:11 AM CDT | Special Weather Statement | DMX | Adair, Madison, Union | 64 min |
| Aug 24, 12:49 AM CDT | Special Weather Statement | DMX | Clarke, Decatur, Ringgold, Union | 41 min |
| Aug 24, 12:59 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 46 min |
| Aug 24, 3:51 AM CDT | Flash Flood Watch | DMX | Adams, Appanoose, Clarke, Davis, Decatur, Lucas and 8 more | 24 hr |
| Aug 24, 5:02 PM CDT | Special Weather Statement | DMX | Madison | 43 min |
| Aug 24, 6:24 PM CDT | Special Weather Statement | DMX | Marion | 66 min |
| Aug 24, 6:32 PM CDT | Special Weather Statement | DMX | Mahaska | 43 min |
| Aug 24, 6:51 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 24 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.