Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >
Overview
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Extremely heavy rainfall, flash flooding, and major river flooding besieged northeastern and east central Iowa during the latter part of September of 2016. Many places saw rivers rise to levels not seen since the devastating floods of 2008. Numerous towns along the Shell Rock, Cedar, Wapsipinicon, and Winnebago rivers and their tributaries were inundated with flood waters. Flash flooding also befell areas under the heaviest rainfall as some places received over 5 to 10 inches in a few hours! Multiple storms tracked across the Ames area on the night of September 22 and led to flash flooding across the city. Finally, at least one tornado and areas of damaging winds and large hail battered northern Butler and southern Floyd counties on the evening of September 21. |
 Total Rainfall Amounts across Iowa from September 21-25, 2016 |
Event Recap
It took a combination of several extraordinary events to bring about the floods of September 2016.
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Antecedent Conditions The summer of 2016 had been marked by unseasonably wet conditions across parts of Minnesota, northern Iowa, and southern Wisconsin. Multiple rounds of major flooding took place across northeast Iowa and southeast Minnesota. This rainfall primed the antecedent environment by saturating the ground throughout the area. By the start of the month, soil moisture content was 2 to 3 inches above normal in many locations, pushing the 95th percentile in terms of climatological rarity. To make matters worse, the agricultural crops had reached maturity by the middle of September and were no longer able to absorb any additional moisture. Multiple heavy rain events on September 7, 9, and 15 each brought a widespread one to two inches of rain to much of northern Iowa and brought rivers to bankfull stage multiple times. Some rivers had yet to recover from the last rainfall before the deluge of September 21 kicked off the flooding. |
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September 21 On the afternoon and evening of September 21, a stationary frontal boundary draped from the Mason City to Iowa Falls area served as the focus for multiple rounds of showers and thunderstorms. These thunderstorms trained repeatedly over eastern Cerro Gordo and western Floyd County before congealing into a massive high-precipitation supercell over southern Floyd and northern Butler County. This supercell brought at least one brief tornado, large hail and damaging winds to locations along its path. However, the biggest story was the rain. The supercell nearly stalled and at points retrograded across a small area of the Shell Rock River for over three hours! By the time it finally shifted east, a swath of 8 to 10 inches of rain with locally higher amounts of around a foot had fallen. Life-threatening flash flooding ensued over Floyd County that night and the Shell Rock River rose nine feet in 10 hours just upstream if the town of Greene in northern Floyd County. |
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September 22 The front that spawned the heavy rainfall the previous night had shifted southwestward into central Iowa by the late afternoon of September 22. Multiple rounds of storms developed just west of Ames and tracked across the city, dumping 3 to 5 inches directly over the city. Multiple major city streets were flooded along with some buildings and homes. Small creeks and streams in the town rose rapidly out of their banks. The rain then spread north and east through the night and deluged northeast Iowa once again with 3 to 6 inches of rain, much of which fell over the areas hardest hit the night before. This brought renewed flash flooding and would push rivers to record heights along the Shell Rock River and near record heights along the Cedar River. |
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September 23-24 As the front lifted northward once again on the afternoon and evening of September 23, it once again ignited widespread showers and storms that brought heavy rain to the upper Des Moines, West Fork Cedar, and Iowa River valleys. Some of the heaviest rainfall amounts of over 5 inches were recorded from Pocahontas County southwestward to near Cedar Rapids. This heavy rain brought renewed rises to many rivers. One more round of heavy rain affected the southwest quarter of the state with flash flooding reported just southwest of Des Moines. Thankfully, this heavy rain all but missed northeast Iowa. |
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Flooding
Record to near record flooding occurred on many major rivers across northeastern Iowa.
Hydrographs
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| Cedar River at Cedar Falls: Crested at 98.90 feet @ 12:00pm on 9/24/16. (2nd Highest Crest on Record) |
Cedar River at Waterloo: Crested at 22.95 feet @ 4:45pm on 9/24/16. (2nd Highest Crest on Record) |
Shell Rock River at Shell Rock: Crested at 21/51 feet @ 4:14pm 9/23/16. (Highest on Record) | Cedar River at Janesville: Crested at 16.35 feet @ 10:30pm on 9/23/16. (3rd Highest Crest on Record) |
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| Winnebago River at Mason City: Crested at 14.14 feet @ 6:15pm 9/22/16. (5th Highest Crest on Record) |
Iowa River at Rowan: Crested at 14.47 feet @ 4:30pm 9/24/16 (7th Highest Crest on Record) |
Wapsipinicon River at Tripoli: Crested at 17.22 feet @ 1:30pm 9/23/16 (4th Highest Crest on Record) |
Skunk River at Ames hydrograph shows the rapid rise that took place following the heavy rain on 9/23. |
Photos & Video:
Coming Soon!Radar:
Coming Soon!Storm Reports
Below is a list of storm reports for the entire event, which include heavy rain reports. Click here to view a map of reports.
0355 PM TSTM WND DMG 5 NNE ROCKWELL 43.05N 93.15W
09/21/2016 CERRO GORDO IA TRAINED SPOTTER
3 INCH TREE BRANCHES DOWN AND QUARTER SIZE
HAIL.
0550 PM TSTM WND DMG 1 SSW MASON CITY 43.13N 93.20W
09/21/2016 CERRO GORDO IA AMATEUR RADIO
TREE LIMBS DOWN APPROXIMATELY 3 INCHES IN
DIAMETER.
0600 PM HAIL 2 N ROCK FALLS 43.23N 93.08W
09/21/2016 E1.25 INCH CERRO GORDO IA TRAINED SPOTTER
HAIL LASTED FOR AROUND 10 MINUTES. STARTED
OUT AS PEA SIZE AND GRADUALLY GOT BIGGER.
WINDS ESTIMATED AROUND 20 MPH.
0624 PM TORNADO 4 W GREENE 42.90N 92.88W
09/21/2016 BUTLER IA EMERGENCY MNGR
BRIEF ROPE TORNADO TOUCHDOWN 4 MILES WEST TO
POSSIBLE WNW OF GREENE.
0630 PM FLASH FLOOD 5 S MANLY 43.22N 93.21W
09/21/2016 CERRO GORDO IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED CREEK IN PASTURE
OUT OF BANKS AND RISING. LOCATION ESTIMATED.
0638 PM TSTM WND DMG 2 ENE GREENE 42.90N 92.77W
09/21/2016 BUTLER IA STORM CHASER
OBSERVED TREE DAMAGE IN STORM CHASER LIVE
VIDEO STREAM. MULTIPLE LARGE TREE LIMBS
DOWN.
0645 PM TSTM WND DMG GREENE 42.90N 92.80W
09/21/2016 BUTLER IA EMERGENCY MNGR
WIDESPREAD TREE DAMAGE THROUGHOUT TOWN.
SEVERAL TREES ON HOUSES.
0650 PM HAIL 1 NNW MASON CITY 43.17N 93.20W
09/21/2016 E0.75 INCH CERRO GORDO IA TRAINED SPOTTER
0700 PM FLASH FLOOD ROCKWELL 42.98N 93.18W
09/21/2016 CERRO GORDO IA DEPT OF HIGHWAYS
DELAYED REPORT. COUNTY ROADS FLOODED NEAR
ROCKWELL.
0711 PM HAIL GREENE 42.90N 92.80W
09/21/2016 U1.00 INCH BUTLER IA PUBLIC
REPORT VIA SOCIAL MEDIA.
0749 PM HAIL GREENE 42.90N 92.81W 09/21/2016 U1.00 INCH BUTLER IA EMERGENCY MNGR
0815 PM FLASH FLOOD 1 ENE MASON CITY 43.15N 93.18W
09/21/2016 CERRO GORDO IA LAW ENFORCEMENT
CERRO GORDO COUNTY DISPATCH NOTED THAT EAST
PARK HAS BEEN FULLY CLOSED DUE TO FLOODING.
1040 PM FLASH FLOOD GREENE 42.90N 92.80W
09/21/2016 BUTLER IA EMERGENCY MNGR
MANY ROADS CLOSED THROUGHOUT THE NORTHERN
FOURTH OF BUTLER COUNTY. SHELL ROCK RIVER
BEGINNING TO LEAVE ITS BANKS AND MOVING
TOWARD BUSINESS IN DOWNTOWN GREENE.
SANDBAGGING GOING ON IN GREENE AND
CLARKSVILLE.
1047 PM HEAVY RAIN GREENE 42.90N 92.80W
09/21/2016 M7.50 INCH BUTLER IA FIRE DEPT/RESCUE
STORM TOTAL.
0515 AM TSTM WND DMG 4 N WELLSBURG 42.49N 92.93W
09/22/2016 GRUNDY IA PUBLIC
VIA SOCIAL MEDIA... DAMAGE TO SEVERAL LARGE
TREES...TIME ESTIMATED.
1145 AM HEAVY RAIN 5 E NORTHWOOD 43.45N 93.12W
09/22/2016 E6.25 INCH WORTH IA PUBLIC
VIA SOCIAL MEDIA.
1030 AM HEAVY RAIN 1 NNE MASON CITY 43.17N 93.19W
09/22/2016 M4.21 INCH CERRO GORDO IA MESONET
MESONET STATION MASON CITY /MCWI4/.
1015 AM HEAVY RAIN 1 N ALGONA 43.08N 94.23W
09/22/2016 M1.29 INCH KOSSUTH IA MESONET
MESONET STATION ALGONA /AGNI4/.
1000 AM HEAVY RAIN 1 SW CLEAR LAKE 43.12N 93.38W
09/22/2016 M2.27 INCH CERRO GORDO IA MESONET
MESONET STATION CLEAR LAKE /CLKI4/.
1000 AM HEAVY RAIN 4 S NEW HARTFORD 42.52N 92.63W
09/22/2016 M2.37 INCH GRUNDY IA MESONET
MESONET STATION BEAVER CK /NHRI4/.
1000 AM HEAVY RAIN STEAMBOAT ROCK 42.41N 93.06W
09/22/2016 M1.51 INCH HARDIN IA MESONET
MESONET STATION STEAMBOAT ROCK /STBI4/.
1000 AM HEAVY RAIN 4 ESE LAKE CORNELIA 42.76N 93.62W
09/22/2016 M2.15 INCH WRIGHT IA MESONET
MESONET STATION 3 ESE LAKE CORNELIA /ROWI4/.
0945 AM HEAVY RAIN 2 N TRIPOLI 42.84N 92.26W
09/22/2016 M2.10 INCH BREMER IA MESONET
MESONET STATION 1 N TRIPOLI /TPLI4/.
0820 AM HEAVY RAIN 1 SW WATERLOO 42.48N 92.36W
09/22/2016 M1.56 INCH BLACK HAWK IA COCORAHS
COCORAHS STATION WATERLOO /IA-BH-18/.
0800 AM HEAVY RAIN CLARKSVILLE 42.78N 92.67W
09/22/2016 M2.30 INCH BUTLER IA COCORAHS
COCORAHS STATION CLARKSVILLE /IA-BU-3/.
0730 AM HEAVY RAIN 1 S GRUNDY CENTER 42.36N 92.77W
09/22/2016 M1.56 INCH GRUNDY IA CO-OP OBSERVER
CO-OP OBSERVER STATION GRUNDY CENTER
/GNDI4/.
0730 AM HEAVY RAIN 2 NE LATIMER 42.78N 93.34W
09/22/2016 M1.05 INCH FRANKLIN IA COCORAHS
COCORAHS STATION 1 NE LATIMER /IA-FR-1/.
0717 AM HEAVY RAIN 1 NNW WAVERLY 42.74N 92.48W
09/22/2016 M1.26 INCH BREMER IA COCORAHS
COCORAHS STATION WAVERLY /IA-BM-2/.
0700 AM HEAVY RAIN NORTHWOOD 43.45N 93.22W
09/22/2016 M4.13 INCH WORTH IA CO-OP OBSERVER
CO-OP OBSERVER STATION NORTHWOOD /NWDI4/.
0700 AM HEAVY RAIN SWALEDALE 42.98N 93.32W
09/22/2016 M2.40 INCH CERRO GORDO IA COCORAHS
COCORAHS STATION SWALEDALE /IA-CG-7/.
0700 AM HEAVY RAIN 3 NW BADGER 42.64N 94.19W
09/22/2016 M1.18 INCH WEBSTER IA COCORAHS
COCORAHS STATION 3 WNW BADGER /IA-WB-5/.
0700 AM HEAVY RAIN HAMPTON 42.75N 93.20W
09/22/2016 M1.36 INCH FRANKLIN IA CO-OP OBSERVER
CO-OP OBSERVER STATION HAMPTON /HPTI4/.
0700 AM HEAVY RAIN 1 S LAKE MILLS 43.40N 93.53W
09/22/2016 M2.10 INCH WINNEBAGO IA CO-OP OBSERVER
CO-OP OBSERVER STATION LAKE MILLS /LMLI4/.
0700 AM HEAVY RAIN 1 NNE CONRAD 42.23N 92.87W
09/22/2016 M1.30 INCH GRUNDY IA CO-OP OBSERVER
CO-OP OBSERVER STATION CONRAD /CRDI4/.
0700 AM HEAVY RAIN 3 ENE MASON CITY 43.16N 93.14W
09/22/2016 M2.61 INCH CERRO GORDO IA COCORAHS
COCORAHS STATION 3 E MASON CITY /IA-CG-5/.
0700 AM HEAVY RAIN 4 SSE BRISTOW 42.72N 92.89W
09/22/2016 M1.94 INCH BUTLER IA CO-OP OBSERVER
CO-OP OBSERVER STATION WEST FORK CEDAR RIVER
/KSYI4/.
0700 AM HEAVY RAIN 1 SE ALGONA 43.07N 94.22W
09/22/2016 M1.17 INCH KOSSUTH IA COCORAHS
COCORAHS STATION ALGONA /IA-KS-4/.
0700 AM HEAVY RAIN 2 SSE WATERLOO 42.47N 92.34W
09/22/2016 M1.23 INCH BLACK HAWK IA COCORAHS
COCORAHS STATION 1 SSE WATERLOO /IA-BH-6/.
0700 AM HEAVY RAIN KANAWHA 42.93N 93.80W
09/22/2016 M2.26 INCH HANCOCK IA CO-OP OBSERVER
CO-OP OBSERVER STATION KANAWHA /KANI4/.
0700 AM HEAVY RAIN 1 ENE WEBSTER CITY 42.47N 93.80W
09/22/2016 M1.10 INCH HAMILTON IA CO-OP OBSERVER
CO-OP OBSERVER STATION WEBSTER CITY /WEBI4/.
0700 AM HEAVY RAIN SHELL ROCK 42.71N 92.58W
09/22/2016 M2.35 INCH BUTLER IA CO-OP OBSERVER
CO-OP OBSERVER STATION 2 W SHELL ROCK
/SHRI4/.
0700 AM HEAVY RAIN 2 N FOREST CITY 43.28N 93.63W
09/22/2016 M3.05 INCH WINNEBAGO IA CO-OP OBSERVER
CO-OP OBSERVER STATION 2 NNE FOREST CITY
/FSCI4/.
0700 AM HEAVY RAIN 1 ESE ALLISON 42.75N 92.78W
09/22/2016 M1.45 INCH BUTLER IA CO-OP OBSERVER
CO-OP OBSERVER STATION ALLISON /ASNI4/.
0700 AM HEAVY RAIN TRIPOLI 42.81N 92.26W
09/22/2016 M2.30 INCH BREMER IA CO-OP OBSERVER
CO-OP OBSERVER STATION TRIPOLI /TRPI4/.
0655 AM HEAVY RAIN 2 SSE FOREST CITY 43.23N 93.62W
09/22/2016 M2.19 INCH HANCOCK IA AWOS
AWOS STATION 2 SSE FOREST CITY /FXY/.
0655 AM HEAVY RAIN 1 WNW CLARION 42.74N 93.76W
09/22/2016 M1.38 INCH WRIGHT IA AWOS
AWOS STATION CLARION /CAV/.
0654 AM HEAVY RAIN WATERLOO REGIONAL AIRPO 42.56N 92.40W
09/22/2016 M1.44 INCH BLACK HAWK IA ASOS
ASOS STATION WATERLOO MUNICIPAL AIRPORT
/ALO/.
0653 AM HEAVY RAIN 3 NE CLEAR LAKE 43.16N 93.33W
09/22/2016 M2.53 INCH CERRO GORDO IA ASOS
ASOS STATION MASON CITY MUNICIPAL AIRPORT
/MCW/.
0600 AM HEAVY RAIN 1 N BRITT 43.11N 93.80W
09/22/2016 M2.45 INCH HANCOCK IA COCORAHS
COCORAHS STATION BRITT /IA-HN-2/.
0600 AM HEAVY RAIN LAKE MILLS 43.42N 93.53W
09/22/2016 M2.07 INCH WINNEBAGO IA COCORAHS
COCORAHS STATION LAKE MILLS /IA-WN-1/.
0826 AM FLASH FLOOD GREENE 42.90N 92.80W
09/22/2016 BUTLER IA EMERGENCY MNGR
DELAYED REPORT. MOST ROADS CLOSED IN AND
AROUND GREENE. THE ONLY WAY TO ACCESS THE
TOWN IS VIA HIGHWAY 14.
0125 PM FLOOD 1 S CLARKSVILLE 42.77N 92.67W
09/22/2016 BUTLER IA PUBLIC
WATER OVER THE ROAD ON HIGHWAY 188 JUST
SOUTH OF CLARKSVILLE.
0216 PM HEAVY RAIN LELAND 43.33N 93.64W
09/22/2016 E3.03 INCH WINNEBAGO IA PUBLIC
STORM TOTAL RAINFALL.
0224 PM FLASH FLOOD 4 WNW TRIPOLI 42.83N 92.34W
09/22/2016 BREMER IA DEPT OF HIGHWAYS
US HIGHWAY 63 IS CLOSED TO SOUTHBOUND
TRAFFIC DUE TO FLOODING. DETOUR IN PLACE.
0225 PM FLASH FLOOD 1 SSE CLARKSVILLE 42.77N 92.66W
09/22/2016 BUTLER IA DEPT OF HIGHWAYS
HIGHWAY 188 IS CLOSED IN BOTH DIRECTIONS DUE
TO FLOODING. DETOUR IN PLACE.
0600 PM HEAVY RAIN GREENE 42.90N 92.80W
09/22/2016 M10.40 INCH BUTLER IA FIRE DEPT/RESCUE
STORM TOTAL SINCE RAIN BEGAN FALLING ON
WEDNESDAY. RAINFALL TOTAL SINCE LAST REPORT
AT 1047PM ON 9/21 WAS 2.9 INCHES...FOR A
STORM TOTAL OF 10.4 INCHES. /REPORT THROUGH
1047PM ON 9/21 WAS 7.5 INCHES PER EARLIER
LSR./ RELAYED BY BUTLER COUNTY EMERGENCY
MANAGEMENT AGENCY.
0600 PM HEAVY RAIN 1 WNW PARKERSBURG 42.58N 92.80W
09/22/2016 M3.15 INCH BUTLER IA CO-OP OBSERVER
THE DURATION OF THE HEAVY RAIN EVENT WAS
36 HOURS.
1010 PM FLASH FLOOD 1 WNW CLARKSVILLE 42.78N 92.68W
09/22/2016 BUTLER IA EMERGENCY MNGR
LEVEE ON THE WEST SIDE OF CLARKSVILLE ALONG
THE SHELL ROCK RIVER FAILED AND THE
SOUTHWEST SIDE OF THE TOWN IS FLOODING.
PEOPLE ARE BEING EVACUATED.
1030 PM FLASH FLOOD 1 W AMES 42.02N 93.65W
09/22/2016 STORY IA TRAINED SPOTTER
COLLEGE CREEK ON ISU CAMPUS OUT OF ITS BANKS
AND HAS REACHED THE BASE OF THE UNION DRIVE.
HEAVY RAIN CONTINUES.
1040 PM FLASH FLOOD 3 WSW AMES 42.01N 93.68W
09/22/2016 STORY IA LAW ENFORCEMENT
PORTIONS OF LINCOLN WAY AND GRAND AVE
FLOODED. OTHER STREETS IMPACTED INCLUDE
SOUTH DAKOTA AND MORTENSEN...ARIZONA AND
ONTARIO...ALONG WITH NUMEROUS OTHER ROADS.
DEPTH OF WATER ESTIMATED TO BE 3 TO 4 FEET
DEEP.
1123 PM HEAVY RAIN 4 WNW AMES 42.05N 93.70W 09/22/2016 M4.02 INCH STORY IA TRAINED SPOTTER
1130 PM FLASH FLOOD 2 NNW AMES 42.05N 93.64W
09/22/2016 STORY IA PUBLIC
STORES ALONG STANGE ROAD STARTING TO FLOOD
WITH WATER FROM OUT FRONT. REPORT VIA SOCIAL
MEDIA.
1155 PM FLASH FLOOD 2 ENE AMES 42.03N 93.59W
09/22/2016 STORY IA LAW ENFORCEMENT
AMES PD REPORTS SEVERAL STREETS THROUGHOUT
THE TOWN HAVE DEEP ENOUGH WATER TO CAUSE
MULTIPLE STALLED VEHICLES IN AMES.
1200 AM FLASH FLOOD 1 SW AMES 42.01N 93.64W
09/23/2016 STORY IA TRAINED SPOTTER
A WIDESPREAD AMOUNT WATER FLOWING RAPIDLY
THROUGH A PARKING LOT AT JACK TRICE STADIUM.
WATER ESTIMATED TO BE 3-6" DEEP AND UP TO
BUMPERS ON SOME VEHICLES. REPORT VIA SOCIAL
MEDIA VIDEO.
1200 AM HEAVY RAIN 3 S PARKERSBURG 42.53N 92.78W
09/23/2016 M4.10 INCH GRUNDY IA PUBLIC
THE DURATION OF THE HEAVY RAIN EVENT WAS
24 HOURS.
1211 AM HEAVY RAIN 2 NNW AMES 42.05N 93.65W
09/23/2016 M5.02 INCH STORY IA PUBLIC
STORM TOTAL. REPORT VIA SOCIAL MEDIA.
1230 AM HEAVY RAIN 3 W AMES 42.02N 93.69W
09/23/2016 M3.88 INCH STORY IA NWS EMPLOYEE
TOTAL AMOUNT SINCE RAIN BEGAN AT 8PM.
1230 AM HEAVY RAIN 2 NNE AMES 42.04N 93.62W
09/23/2016 M5.11 INCH STORY IA PUBLIC
TOTAL RAINFALL SINCE RAIN BEGAN AT 8PM.
0500 AM FLASH FLOOD 3 S CLARKSVILLE 42.73N 92.67W
09/23/2016 BUTLER IA LAW ENFORCEMENT
WATER UP TO THE WHEEL WELLS OF A PICKUP
TRUCK ALONG 220TH ST NEAR TERRACE AVENUE.
0445 AM FLASH FLOOD DENVER 42.67N 92.34W
09/23/2016 BREMER IA LAW ENFORCEMENT
IN DENVER, ALONG FOREST AVENUE, AN OFFICER
IS NOTIFYING RESIDENTS TO EVACUATE DUE TO
THE CREEK FLOODING NORTHERN PART OF TOWN.
0445 AM FLASH FLOOD 3 ENE WAVERLY 42.74N 92.42W
09/23/2016 BREMER IA LAW ENFORCEMENT
NORTHEAST OF WAVERLY ALONG V21 OR IVORY
AVENUE, A BRIDGE HAS WATER FLOWING OVER IT
DUE TO BASKINS RUN.
0445 AM FLOOD 1 SE WAVERLY 42.72N 92.46W
09/23/2016 BREMER IA LAW ENFORCEMENT
ALL OF SOUTHEAST PORTION OF WAVERLY HAS BEEN
EVACUATED DUE TO THE CEDAR RIVER FLOODING
...TIME OF EVACUATION UNKNOWN .
0303 AM FLOOD 1 SSE CLARKSVILLE 42.77N 92.66W
09/23/2016 BUTLER IA DEPT OF HIGHWAYS
IOWA 188 IS CLOSED BETWEEN IA 3 AND COUNTY
ROAD T64 (SOUTH OF CLARKSVILLE). THE ROAD IS
BLOCKED BECAUSE OF FLOODING FROM THE SHELL
ROCK RIVER.
0242 AM FLOOD 1 NNW SHELL ROCK 42.73N 92.59W
09/23/2016 BUTLER IA DEPT OF HIGHWAYS
IOWA DEPARTMENT OF TRANSPORTATION AND LOCAL
LAW ENFORCEMENT HAVE CLOSED HIGHWAY 3
BETWEEN COUNTY ROAD T55 NEAR CLARKSVILLE AND
US 218 NEAR SHELL ROCK DUE TO THE SHELL ROCK
RIVER.
0319 AM FLASH FLOOD 4 WSW GENEVA 42.66N 93.20W
09/23/2016 FRANKLIN IA LAW ENFORCEMENT
WATER FLOWING OVER FEDERAL HIGHWAY 65 SOUTH
OF 95TH STREET IN FRANKLIN COUNTY.
0330 AM FLASH FLOOD 3 SSW KANAWHA 42.89N 93.81W
09/23/2016 WRIGHT IA LAW ENFORCEMENT
NUMEROUS SECONDARY ROADS WITH WATER
OVERTOPPING THEM, SOME ARE CLOSED. MOSTLY IN
NORTHERN WRIGHT COUNTY BUT OTHER SCATTERED
ABOUT ELSEWHERE.
0400 AM FLASH FLOOD 4 SSE COULTER 42.69N 93.34W
09/23/2016 FRANKLIN IA LAW ENFORCEMENT
NUMEROUS SECONDARY ROADS IN FRANKLIN COUNTY
WITH WATER OVER THEM TO VARY DEPTHS. SOME
ROADS ARE CLOSED.
0400 AM FLASH FLOOD GOLDFIELD 42.74N 93.93W
09/23/2016 WRIGHT IA LAW ENFORCEMENT
WATER REPORTED FLOWING OVER THE ROAD NEAR
RIVER PARK IN GOLDFIELD.
0757 AM HEAVY RAIN 1 E GILBERT 42.11N 93.64W
09/23/2016 M3.30 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 3.30 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN 2 N AMES 42.06N 93.63W
09/23/2016 M4.86 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 4.86 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN 3 N DYSART 42.22N 92.31W
09/23/2016 M2.09 INCH TAMA IA COCORAHS
COCORAHS OBSERVER REPORTED 2.09 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN 1 NE AMES 42.03N 93.61W
09/23/2016 M5.41 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 5.41 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN 2 NNE AMES 42.05N 93.61W
09/23/2016 M5.11 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 5.11 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN 3 W AMES 42.03N 93.68W
09/23/2016 M4.31 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 5.41 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN GILBERT 42.11N 93.65W
09/23/2016 M3.25 INCH STORY IA COCORAHS
COCORAHS OBSERVER REPORTED 3.25 INCHES OF
RAIN IN PAST 24 HOURS.
0700 AM HEAVY RAIN TRAER 42.19N 92.47W
09/23/2016 M1.97 INCH TAMA IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 1.97 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN ALGONA 43.07N 94.23W
09/23/2016 M2.32 INCH KOSSUTH IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 2.32 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN CLARION 42.73N 93.73W
09/23/2016 M3.82 INCH WRIGHT IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 3.82 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN 4 NNW CAMBRIDGE 41.95N 93.57W
09/23/2016 M4.54 INCH STORY IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 4.54 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN TRIPOLI 42.81N 92.26W
09/23/2016 M4.61 INCH BREMER IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 4.61 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN 3 NNE NAPIER 42.02N 93.71W
09/23/2016 M4.01 INCH BOONE IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 4.01 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN 2 WNW CLARION 42.74N 93.76W
09/23/2016 M2.60 INCH WRIGHT IA AWOS
CLARION AWOS MEASURED 2.60 INCHES OF RAIN IN
PAST 24 HOURS.
0700 AM HEAVY RAIN 3 NE CLEAR LAKE 43.16N 93.33W
09/23/2016 M2.13 INCH CERRO GORDO IA ASOS
MASON CITY ASOS MEASURED 2.13 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN WATERLOO REGIONAL AIRPO 42.56N 92.40W
09/23/2016 M2.12 INCH BLACK HAWK IA ASOS
WATERLOO ASOS MEASURED 2.12 INCHES OF RAIN
IN PAST 24 HOURS.
0700 AM HEAVY RAIN 2 S AMES 41.99N 93.62W
09/23/2016 M3.30 INCH STORY IA ASOS
AMES ASOS MEASURED 3.30 INCHES OF RAIN IN
PAST 24 HOURS.
0839 AM HEAVY RAIN EMMETSBURG 43.12N 94.68W
09/23/2016 E3.50 INCH PALO ALTO IA DEPT OF HIGHWAYS
STORM TOTAL RAINFALL THROUGH 8AM.
1043 AM FLOOD 1 NW BELMOND 42.86N 93.62W
09/23/2016 WRIGHT IA DEPT OF HIGHWAYS
US HIGHWAY 69 IS CLOSED NEAR BELMOND DUE TO
FLOODING. DETOUR IN PLACE.
0117 PM FLOOD 3 ENE READLYN 42.72N 92.17W
09/23/2016 BREMER IA DEPT OF HIGHWAYS
IA HIGHWAY 3 IS CLOSED DUE TO FLOODING NEAR
READLYN. DETOUR IN PLACE.
1100 PM FLASH FLOOD 1 SW MURRAY 41.03N 93.96W
09/24/2016 CLARKE IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED FLOODING IN
MURRAY... 6 TO 8 INCHES OF STANDING WATER
STILL IN CITY PARK AT TIME OF REPORT.
DRIVEWAY CULVERT DESTROYED BY WATER. A
MOBILE HOME SURROUNDED BY 1 FOOT STANDING
WATER ON ALL SIDES. DITCHES SEVERAL FEET
DEEP FILLED WITH WATER. DEBRIS ACROSS ROADS
FROM WATER. ESTIMATED OVER 6 INCHES OF WATER
COVERING ROADS FOLLOWING MOST INTENSE
RAINFALL. TIME OF REPORT WAS AROUND 9 50 AM
SUNDAY MORNING. TIME OF FLOODING OCCURRENCE
ESTIMATED BY RADAR.
0730 AM HEAVY RAIN MURRAY 41.04N 93.95W
09/25/2016 M2.30 INCH CLARKE IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED 2.3 INCHES OF RAIN
DURING PREVIOUS 24 HOURS.
0700 AM HEAVY RAIN DES MOINES INT AIRPORT 41.53N 93.66W
09/25/2016 M1.66 INCH POLK IA ASOS
DES MOINES INTERNATIONAL AIRPORT ASOS
MEASURED 1.66 INCHES OF RAIN DURING PREVIOUS
24 HOURS.
0700 AM HEAVY RAIN LORIMOR 41.13N 94.05W
09/25/2016 E3.00 INCH UNION IA CO-OP OBSERVER
CO-OP OBSERVER REPORTED 3.0 INCHES OF RAIN
DURING PREVIOUS 24 HOURS.
0700 AM HEAVY RAIN WINTERSET 41.34N 94.02W
09/25/2016 M2.30 INCH MADISON IA COCORAHS
COCORAHS OBSERVER REPORTED 2.30 INCHES OF
RAIN DURING PREVIOUS 24 HOURS.
0800 AM HEAVY RAIN 3 SSE THAYER 40.98N 94.03W
09/25/2016 M2.22 INCH UNION IA COCORAHS
COCORAHS OBSERVER REPORTED 2.22 INCHES OF
RAIN DURING PREVIOUS 24 HOURS.
0930 AM HEAVY RAIN MURRAY 41.04N 93.95W
09/25/2016 M3.93 INCH CLARKE IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED 3.93 INCHES OF RAIN
DURING PREVIOUS 24 HOURS IN MURRAY. MEASURED
WITH COCORAHS RAIN GAUGE.
0930 AM HEAVY RAIN 2 W MURRAY 41.04N 93.98W
09/25/2016 M2.52 INCH CLARKE IA TRAINED SPOTTER
TRAINED SPOTTER REPORTED 2.52 INCHES OF RAIN
DURING PREVIOUS 24 HOURS.
Environment
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