Alert archive / Iowa / River Flood Warnings in 2021

River Flood Warning 24, NWS La Crosse, WI

August 29, 2021Allamakee County, Iowa

NWS La Crosse, WI issued this river flood warning at Aug 29, 2021, 2:20 PM CDT for Allamakee County, Iowa. It took effect at Aug 30, 2021, 7:00 AM CDT. It was in force for 14 hr.

The area

The outline as issued.

The facts

Issued: Aug 29, 2021, 2:20 PM CDT (19:20 UTC)
In effect from: Aug 30, 2021, 7:00 AM CDT
Expired: Aug 30, 2021, 9:10 PM CDT
In force: 14 hr
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Flood severity: Minor

County Allamakee County, IA

The radar

The La Crosse radar (KARX), 47 km from the middle of the area, began a volume at 19:24 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.

The river

Written for the forecast point Upper Iowa River at Dorchester (DCHI4). The gauge peaked at 14.04 ft at Aug 30, 2021, 10:00 AM CDT.

Action stage: 11 ft
Minor stage: 14 ft
Moderate stage: 17 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05388250, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

023 
WGUS43 KARX 291920
FLWARX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service La Crosse WI
220 PM CDT Sun Aug 29 2021

...The National Weather Service in La Crosse WI has issued a Flood 
Warning for the following rivers in Iowa...

  Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County.

For the Upper Iowa River...including Decorah, Bluffton, Dorchester 
Hwy 76...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional river and weather information is available at 
www.weather.gov/lacrosse.

&&


IAC005-300730-
/O.NEW.KARX.FL.W.0024.210830T1200Z-210901T0345Z/
/DCHI4.1.ER.210830T1200Z.210831T0000Z.210831T0945Z.NO/
220 PM CDT Sun Aug 29 2021

The National Weather Service in La Crosse has issued a

* Flood Warning for
  the Upper Iowa River at Dorchester Hwy 76.
* From Monday morning to late Tuesday evening.
* At 1:00 PM CDT Sunday the stage was 12.3 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow morning to a crest of 14.9 feet tomorrow evening. It will 
  then fall below flood stage early Tuesday morning.
* Impact...At 14.0 feet, Lowland agricultural areas begin to flood.


&&

LAT...LON 4350 9125 4343 9123 4339 9152 4334 9161
      4341 9161

$$

ARX

4 follow-up statements

215 
WGUS83 KARX 300210
FLSARX

Flood Statement
National Weather Service La Crosse WI
910 PM CDT Sun Aug 29 2021

...The Flood Warning continues for the following rivers in Iowa...

  Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County.

For the Upper Iowa River...including Decorah, Bluffton, Dorchester 
Hwy 76...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional river and weather information is available at 
www.weather.gov/lacrosse.

The next statement will be issued Monday afternoon at 1215 PM CDT.

&&


IAC005-301715-
/O.CON.KARX.FL.W.0024.210830T1200Z-210901T0345Z/
/DCHI4.1.ER.210830T1200Z.210831T0000Z.210831T0945Z.NO/
910 PM CDT Sun Aug 29 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Upper Iowa River at Dorchester Hwy 76.
* From Monday morning to late Tuesday evening.
* At 8:00 PM CDT Sunday the stage was 12.8 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow morning to a crest of 14.8 feet tomorrow evening. It will 
  then fall below flood stage early Tuesday morning.
* Impact...At 14.0 feet, Lowland agricultural areas begin to flood.
* Impact...At 15.0 feet, Significant agricultural flooding begins.
* Flood History...This crest compares to a previous crest of 13.9 
  feet on 06/20/2014.


&&

LAT...LON 4350 9125 4343 9123 4339 9152 4334 9161
      4341 9161

$$

ARX

983 
WGUS83 KARX 300858
FLSARX

Flood Statement
National Weather Service La Crosse WI
358 AM CDT Mon Aug 30 2021

...The Flood Warning is extended for the following rivers in Iowa...

  Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County.

...The Flood Warning continues for the following rivers in Iowa...

  Cedar River at Charles City affecting Floyd County.

  Turkey River at Garber affecting Clayton County.

  Turkey River at Elkader affecting Clayton County.

For the Cedar River...including Lansing, Austin, Charles City...
Minor flooding is forecast.
For the Turkey River...including Spillville, Elkader, Garber...Major 
flooding is forecast.
For the Upper Iowa River...including Decorah, Bluffton, Dorchester 
Hwy 76...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional river and weather information is available at 
www.weather.gov/lacrosse.

The next statement will be issued this afternoon at 400 PM CDT.

&&


IAC005-302100-
/O.EXT.KARX.FL.W.0024.210830T1525Z-210901T0345Z/
/DCHI4.1.ER.210830T1525Z.210831T0000Z.210831T0945Z.NO/
358 AM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until late tomorrow evening...

The Flood Warning continues for
  the Upper Iowa River at Dorchester Hwy 76.
* From this morning to late tomorrow evening.
* At 2:00 AM CDT Monday the stage was 13.4 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this morning to a crest of 14.8 feet this evening. It will then 
  fall below flood stage late tonight.
* Impact...At 14.0 feet, Lowland agricultural areas begin to flood. 
*  


&&

LAT...LON 4350 9125 4343 9123 4339 9152 4334 9161
      4341 9161

$$

IAC067-302100-
/O.CON.KARX.FL.W.0019.000000T0000Z-210831T0705Z/
/CCYI4.2.ER.210828T1643Z.210829T1145Z.210830T1305Z.NO/
358 AM CDT Mon Aug 30 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Cedar River at Charles City.
* Until just after midnight tonight.
* At 2:30 AM CDT Monday the stage was 13.2 feet.
* Flood stage is 12.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to fall below flood stage this 
  morning and continue falling to 3.7 feet Sunday evening.
* Impact...At 12.0 feet, Barricading of streets begins, and the 
  intersection of Riverside and North Illinois Streets may be 
  flooded. Cable pedestrian bridge is closed.


&&

LAT...LON 4321 9286 4321 9273 4301 9255 4293 9255
      4304 9273

$$

IAC043-302100-
/O.CON.KARX.FL.W.0017.000000T0000Z-210901T1746Z/
/GRBI4.3.ER.210828T2342Z.210831T0000Z.210831T2346Z.NO/
358 AM CDT Mon Aug 30 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Turkey River at Garber.
* Until early Wednesday afternoon.
* At 3:15 AM CDT Monday the stage was 20.0 feet.
* Flood stage is 17.0 feet.
* Minor flooding is occurring and major flooding is forecast.
* Forecast...The river is expected to rise to a crest of 25.0 feet 
  this evening. It will then fall below flood stage tomorrow evening.
* Impact...At 17.0 feet, Minor flooding begins in the communities of 
  Garber, Osterdock and Millville.
* Impact...At 19.0 feet, County Road X3C at the south end of Garber 
  becomes inundated.


&&

LAT...LON 4280 9136 4284 9134 4269 9096 4272 9131

$$

IAC043-302100-
/O.CON.KARX.FL.W.0016.000000T0000Z-210902T0424Z/
/EKDI4.3.ER.210828T1506Z.210830T1800Z.210901T1024Z.NO/
358 AM CDT Mon Aug 30 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the Turkey River at Elkader.
* Until late Wednesday evening.
* At 2:45 AM CDT Monday the stage was 20.9 feet.
* Flood stage is 12.0 feet.
* Major flooding is occurring and major flooding is forecast.
* Forecast...The river is expected to rise to a crest of 24.0 feet 
  this afternoon. It will then fall below flood stage early 
  Wednesday morning.
* Impact...At 12.0 feet, Minor flooding occurs in areas near the 
  river.


&&

LAT...LON 4294 9146 4284 9134 4280 9136 4293 9161
      4298 9161

$$

CZ

921 
WGUS83 KARX 301744
FLSARX

Flood Statement
National Weather Service La Crosse WI
1244 PM CDT Mon Aug 30 2021

...The Flood Warning continues for the following rivers in Iowa...

  Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County.

For the Upper Iowa River...including Decorah, Bluffton, Dorchester 
Hwy 76...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Additional river and weather information is available at 
www.weather.gov/lacrosse.

&&


IAC005-310545-
/O.EXT.KARX.FL.W.0024.000000T0000Z-210901T0000Z/
/DCHI4.1.ER.210830T1448Z.210831T0000Z.210831T0600Z.NO/
1244 PM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until tomorrow evening...

The Flood Warning continues for
  the Upper Iowa River at Dorchester Hwy 76.
* Until tomorrow evening.
* At 11:00 AM CDT Monday the stage was 14.0 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 14.7 feet 
  tonight. It will then fall below flood stage Tuesday.
* Impact...At 14.0 feet, Lowland agricultural areas begin to flood.
* Impact...At 15.0 feet, Significant agricultural flooding begins.


&&

LAT...LON 4350 9125 4343 9123 4339 9152 4334 9161
      4341 9161

$$

Shea

578 
WGUS83 KARX 310210
FLSARX

Flood Statement
National Weather Service La Crosse WI
910 PM CDT Mon Aug 30 2021

...The Flood Warning is cancelled for the following rivers in Iowa...

  Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County.

IAC005-310315-
/O.CAN.KARX.FL.W.0024.000000T0000Z-210831T0210Z/
/DCHI4.1.ER.210830T1448Z.210830T1715Z.210830T1900Z.NO/
910 PM CDT Mon Aug 30 2021

...The Flood Warning for the Upper Iowa River at Dorchester Hwy 76 
has been cancelled...

The Flood Warning is cancelled for
  the Upper Iowa River at Dorchester Hwy 76.
* At 8:00 PM CDT Monday the stage was 11.7 feet.
* Flood stage is 14.0 feet.
* Forecast...The river is expected to fall to 7.8 feet Monday 
  evening.


&&

LAT...LON 4350 9125 4343 9123 4339 9152 4334 9161
      4341 9161

$$

Rieck

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 29, 3:51 AM CDT	River Flood Watch	ARX	Allamakee	10 hr

Nearby

River Flood Warnings in Iowa, 2021 Every river flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.