Alert archive / Iowa / River Flood Warnings in 2021

River Flood Warning 1, NWS Des Moines, IA

August 28, 2021Black Hawk County, Bremer County, Butler County, Iowa

NWS Des Moines, IA issued this river flood warning at Aug 28, 2021, 10:17 AM CDT for Black Hawk County, Bremer County, Butler County, Iowa. It took effect at Aug 29, 2021, 10:36 PM CDT. It was in force for 39 hr.

The area

The outline as issued.

The facts

Issued: Aug 28, 2021, 10:17 AM CDT (15:17 UTC)
In effect from: Aug 29, 2021, 10:36 PM CDT
Expired: Aug 31, 2021, 1:25 PM CDT
In force: 39 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: Minor

Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA

The radar

The Des Moines radar (KDMX), 149 km from the middle of the area, began a volume at 15:19 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 Cedar River at Janesville (JANI4). The gauge peaked at 15.01 ft at Aug 30, 2021, 10:00 AM CDT.

Action stage: 10 ft
Minor stage: 13 ft
Moderate stage: 15 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05458500, 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.

270 
WGUS43 KDMX 281517
FLWDMX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Des Moines IA
1017 AM CDT Sat Aug 28 2021

...The National Weather Service in Des Moines IA has issued a Flood 
Warning for the following rivers in Iowa...

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

  Cedar River at Cedar Falls affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 1015 PM CDT.

&&


IAC013-017-023-290330-
/O.NEW.KDMX.FL.W.0001.210830T0336Z-210831T1800Z/
/JANI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1017 AM CDT Sat Aug 28 2021

The National Weather Service in Des Moines has issued a

* Flood Warning for
  the Cedar River at Janesville.
* From Sunday evening to early Tuesday afternoon.
* At 9:45 AM CDT Saturday the stage was 3.0 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow evening to a crest of 13.5 feet Monday morning. It will 
  then fall below flood stage early Monday afternoon.
* Impact...At 13.0 feet, Evacuation of a trailer court in Janesville 
  may be needed...due to flooding on West 3rd Street. Much of the 
  Janesville city park floods. Nearby gravel roads are affected.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

IAC013-290330-
/O.NEW.KDMX.FL.W.0002.210830T0508Z-210902T0317Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1017 AM CDT Sat Aug 28 2021

The National Weather Service in Des Moines has issued a

* Flood Warning for
  the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 9:45 AM CDT Saturday the stage was 79.2 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Monday morning to a crest of 91.2 feet Monday evening. It will 
  then fall below flood stage late Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

Small

13 follow-up statements

610 
WGUS83 KDMX 282007
FLSDMX

Flood Statement
National Weather Service Des Moines IA
307 PM CDT Sat Aug 28 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

  Cedar River at Cedar Falls affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued late tonight at 315 AM CDT.

&&


IAC013-017-023-290815-
/O.CON.KDMX.FL.W.0001.210830T0336Z-210831T1800Z/
/JANI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
307 PM CDT Sat Aug 28 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* From Sunday evening to early Tuesday afternoon.
* At 2:45 PM CDT Saturday the stage was 3.4 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow evening to a crest of 13.5 feet Monday morning. It will 
  then fall below flood stage early Monday afternoon.
* Impact...At 13.0 feet, Evacuation of a trailer court in Janesville 
  may be needed...due to flooding on West 3rd Street. Much of the 
  Janesville city park floods. Nearby gravel roads are affected.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

IAC013-290815-
/O.CON.KDMX.FL.W.0002.210830T0508Z-210902T0317Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
307 PM CDT Sat Aug 28 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 2:45 PM CDT Saturday the stage was 79.6 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Monday morning to a crest of 91.2 feet Monday evening. It will 
  then fall below flood stage late Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

Small

509 
WGUS83 KDMX 282142
FLSDMX

Flood Statement
National Weather Service Des Moines IA
442 PM CDT Sat Aug 28 2021

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

  Cedar River at Cedar Falls affecting Black Hawk County.

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued late tonight at 445 AM CDT.

&&


IAC013-290945-
/O.EXT.KDMX.FL.W.0002.210830T0508Z-210902T0316Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
442 PM CDT Sat Aug 28 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 3:45 PM CDT Saturday the stage was 79.7 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Monday morning to a crest of 91.2 feet Monday evening. It will 
  then fall below flood stage late Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
* Flood History...This crest compares to a previous crest of 91.2 
  feet on 05/01/1975.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

IAC013-017-023-290945-
/O.CON.KDMX.FL.W.0001.210830T0336Z-210831T1800Z/
/JANI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
442 PM CDT Sat Aug 28 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* From Sunday evening to early Tuesday afternoon.
* At 3:45 PM CDT Saturday the stage was 3.5 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow evening to a crest of 13.5 feet Monday morning. It will 
  then fall below flood stage early Monday afternoon.
* Impact...At 13.0 feet, Evacuation of a trailer court in Janesville 
  may be needed...due to flooding on West 3rd Street. Much of the 
  Janesville city park floods. Nearby gravel roads are affected.
* Flood History...This crest compares to a previous crest of 13.4 
  feet on 09/18/2004.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Krull

021 
WGUS83 KDMX 290209
FLSDMX

Flood Statement
National Weather Service Des Moines IA
909 PM CDT Sat Aug 28 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

  Cedar River at Cedar Falls affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued Sunday morning at 915 AM CDT.

&&


IAC013-017-023-291415-
/O.EXT.KDMX.FL.W.0001.210830T0243Z-210831T2145Z/
/JANI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
909 PM CDT Sat Aug 28 2021

...The Flood Warning is now in effect until Tuesday afternoon...

The Flood Warning continues for
  the Cedar River at Janesville.
* From Sunday evening to Tuesday afternoon.
* At 8:45 PM CDT Saturday the stage was 4.1 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow evening to a crest of 13.9 feet Monday morning. It will 
  then fall below flood stage Monday afternoon.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 13.9 
  feet on 03/31/1962.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

IAC013-291415-
/O.EXT.KDMX.FL.W.0002.210830T0527Z-210902T0316Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
909 PM CDT Sat Aug 28 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 8:45 PM CDT Saturday the stage was 80.2 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  Monday morning to a crest of 91.1 feet Monday evening. It will 
  then fall below flood stage late Tuesday evening.
* Impact...At 91.0 feet, Water covers Big Woods Road south of 
  Dunkerton Road. Water also covers the north parking lot of Island 
  Park.
* Flood History...This crest compares to a previous crest of 91.2 
  feet on 05/01/1975.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

Krull

317 
WGUS83 KDMX 290807
FLSDMX

Flood Statement
National Weather Service Des Moines IA
307 AM CDT Sun Aug 29 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 315 PM CDT.

&&


IAC013-017-023-292015-
/O.CON.KDMX.FL.W.0001.210830T0243Z-210831T2145Z/
/JANI4.1.ER.210830T0243Z.210830T1200Z.210830T2145Z.NO/
307 AM CDT Sun Aug 29 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* From this evening to Tuesday afternoon.
* At 1:45 AM CDT Sunday the stage was 5.3 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this evening to a crest of 13.9 feet tomorrow morning. It will 
  then fall below flood stage tomorrow afternoon.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Martin

989 
WGUS83 KDMX 291518
FLSDMX

Flood Statement
National Weather Service Des Moines IA
1018 AM CDT Sun Aug 29 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

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

  Cedar River at Cedar Falls affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 1030 PM CDT.

&&


IAC013-300330-
/O.EXT.KDMX.FL.W.0002.210830T0600Z-210902T0150Z/
/CEDI4.1.ER.210830T0600Z.210831T0600Z.210901T0150Z.NO/
1018 AM CDT Sun Aug 29 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From late tonight to Wednesday evening.
* At 9:45 AM CDT Sunday the stage was 83.6 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 91.3 feet early Tuesday 
  morning. It will then fall below flood stage Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

IAC013-017-023-300330-
/O.EXT.KDMX.FL.W.0001.210830T0900Z-210831T2315Z/
/JANI4.1.ER.210830T0900Z.210830T1800Z.210830T2315Z.NO/
1018 AM CDT Sun Aug 29 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* From late tonight to Tuesday evening.
* At 9:45 AM CDT Sunday the stage was 7.1 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 13.7 feet early tomorrow afternoon. It will 
  then fall below flood stage tomorrow evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Small

083 
WGUS83 KDMX 300039
FLSDMX

Flood Statement
National Weather Service Des Moines IA
739 PM CDT Sun Aug 29 2021

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

  Cedar River at Cedar Falls affecting Black Hawk County.

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued Monday morning at 745 AM CDT.

&&


IAC013-301245-
/O.CON.KDMX.FL.W.0002.210830T0600Z-210902T0150Z/
/CEDI4.1.ER.210830T0600Z.210831T0600Z.210901T0150Z.NO/
739 PM CDT Sun Aug 29 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From late tonight to Wednesday evening.
* At 6:45 PM CDT Sunday the stage was 85.0 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 91.3 feet early Tuesday 
  morning. It will then fall below flood stage Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
* Flood History...This crest compares to a previous crest of 91.2 
  feet on 05/01/1975.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

IAC013-017-023-301245-
/O.CON.KDMX.FL.W.0001.210830T0900Z-210831T2315Z/
/JANI4.1.ER.210830T0900Z.210830T1800Z.210830T2315Z.NO/
739 PM CDT Sun Aug 29 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* From late tonight to Tuesday evening.
* At 6:45 PM CDT Sunday the stage was 9.7 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 13.7 feet early tomorrow afternoon. It will 
  then fall below flood stage tomorrow evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 13.7 
  feet on 07/01/1969.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Krull

788 
WGUS83 KDMX 300152
FLSDMX

Flood Statement
National Weather Service Des Moines IA
852 PM CDT Sun Aug 29 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

  Cedar River at Cedar Falls affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued Monday morning at 900 AM CDT.

&&


IAC013-017-023-301400-
/O.EXT.KDMX.FL.W.0001.210830T1232Z-210901T0622Z/
/JANI4.1.ER.210830T1232Z.210830T1800Z.210831T0622Z.NO/
852 PM CDT Sun Aug 29 2021

...The Flood Warning is now in effect until early Wednesday 
morning...

The Flood Warning continues for
  the Cedar River at Janesville.
* From Monday morning to early Wednesday morning.
* At 7:45 PM CDT Sunday the stage was 10.3 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage 
  tomorrow morning to a crest of 14.0 feet early tomorrow afternoon. 
  It will then fall below flood stage early Tuesday morning.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

IAC013-301400-
/O.EXT.KDMX.FL.W.0002.210830T1500Z-210902T0834Z/
/CEDI4.1.ER.210830T1500Z.210831T1200Z.210901T0834Z.NO/
852 PM CDT Sun Aug 29 2021

...The Flood Warning is now in effect until early Thursday morning...

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* From Monday morning to early Thursday morning.
* At 7:45 PM CDT Sunday the stage was 85.2 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tomorrow morning to a crest of 91.3 feet Tuesday morning. It will 
  then fall below flood stage early Wednesday morning.
* Impact...At 91.2 feet, Water covers portions of Lake Street.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

Krull

303 
WGUS43 KDMX 301215
FLWDMX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Des Moines IA
715 AM CDT Mon Aug 30 2021

...Forecast flooding changed from Minor to Moderate severity and 
increased in duration for the following rivers in Iowa...

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 715 PM CDT.

&&


IAC013-017-023-310015-
/O.EXT.KDMX.FL.W.0001.210830T1215Z-210901T1103Z/
/JANI4.2.ER.210830T0625Z.210831T0000Z.210831T1103Z.NO/
715 AM CDT Mon Aug 30 2021

...Forecast flooding increased from Minor to Moderate severity and 
increased in duration until Wednesday morning...

The Flood Warning continues for
  the Cedar River at Janesville.
* From this morning to Wednesday morning.
* At 6:45 AM CDT Monday the stage was 14.7 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 6:45 AM CDT Monday was 14.7 feet.
* Forecast...The river is expected to rise to a crest of 15.4 feet 
  this evening. It will then fall below flood stage tomorrow morning.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Martin

842 
WGUS83 KDMX 301647
FLSDMX

Flood Statement
National Weather Service Des Moines IA
Issued by National Weather Service Quad Cities IA IL
1147 AM CDT Mon Aug 30 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

For the Cedar River...including Janesville, Cedar Falls, Waterloo...
Moderate flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 1145 PM CDT.

&&


IAC013-017-023-310500-
/O.EXT.KDMX.FL.W.0001.000000T0000Z-210901T1104Z/
/JANI4.2.ER.210830T0625Z.210831T0000Z.210831T1103Z.OO/
1147 AM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until Wednesday morning...

The Flood Warning continues for
  the Cedar River at Janesville.
* Until Wednesday morning.
* At 845 AM CDT the stage was at 14.9 feet
* Flood stage is 13.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Forecast...The river is expected to rise to a crest of 15.4 feet 
  this evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 15.7 
  feet on 08/18/1993.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

426 
WGUS83 KDMX 301738
FLSDMX

Flood Statement
National Weather Service Des Moines IA
1238 PM CDT Mon Aug 30 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued late tonight at 1245 AM CDT.

&&


IAC013-017-023-310545-
/O.EXT.KDMX.FL.W.0001.000000T0000Z-210901T1103Z/
/JANI4.2.ER.210830T0625Z.210831T0000Z.210831T1103Z.NO/
1238 PM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until Wednesday morning...

The Flood Warning continues for
  the Cedar River at Janesville.
* Until Wednesday morning.
* At 10:45 AM CDT Monday the stage was 14.9 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 10:45 AM CDT Monday was 15.1 feet.
* Forecast...The river is expected to rise to a crest of 15.4 feet 
  this evening. It will then fall below flood stage tomorrow morning.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 15.7 
  feet on 08/18/1993.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Zogg

834 
WGUS83 KDMX 310151
FLSDMX

Flood Statement
National Weather Service Des Moines IA
851 PM CDT Mon Aug 30 2021

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

  Cedar River at Cedar Falls affecting Black Hawk County.

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

  Cedar River at Waterloo affecting Black Hawk County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued Tuesday morning at 900 AM CDT.

&&


IAC013-311400-
/O.EXT.KDMX.FL.W.0002.000000T0000Z-210902T1800Z/
/CEDI4.2.ER.210830T1548Z.210831T1200Z.210901T1800Z.NO/
851 PM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until early Thursday 
afternoon...

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* Until early Thursday afternoon.
* At 7:45 PM CDT Monday the stage was 90.5 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:45 PM CDT Monday was 90.5 feet.
* Forecast...The river is expected to rise to a crest of 92.4 feet 
  tomorrow morning. It will then fall below flood stage early 
  Wednesday afternoon.
* Impact...At 92.2 feet, Water is in southeast corner of Gateway 
  Park.
* Flood History...This crest compares to a previous crest of 92.4 
  feet on 04/18/1973.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

IAC013-017-023-311400-
/O.EXT.KDMX.FL.W.0001.000000T0000Z-210901T1222Z/
/JANI4.1.ER.210830T0625Z.210830T1445Z.210831T1222Z.NO/
851 PM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until Wednesday morning...

The Flood Warning continues for
  the Cedar River at Janesville.
* Until Wednesday morning.
* At 7:45 PM CDT Monday the stage was 14.7 feet and falling.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:45 PM CDT Monday was 15.1 feet.
* Forecast...The river is expected to fall below flood stage 
  tomorrow morning and continue falling to 3.0 feet Monday evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 14.6 
  feet on 05/22/2013.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

IAC013-311400-
/O.EXT.KDMX.FL.W.0003.210831T1000Z-210902T0830Z/
/ALOI4.1.ER.210831T1000Z.210901T0000Z.210901T0830Z.NO/
851 PM CDT Mon Aug 30 2021

...The Flood Warning is now in effect until early Thursday morning...

The Flood Warning continues for
  the Cedar River at Waterloo.
* From late tonight to early Thursday morning.
* At 8:00 PM CDT Monday the stage was 10.9 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 14.2 feet tomorrow evening. It will then 
  fall below flood stage early Wednesday morning.
* Impact...At 13.0 feet, Many storm sewers are closed along Black 
  Hawk Creek and the Cedar River. The Fletcher Avenue levee gates 
  are closed.
* Flood History...This crest compares to a previous crest of 14.2 
  feet on 06/15/2013.


&&

LAT...LON 4256 9238 4238 9207 4230 9207 4230 9222
      4251 9245

$$

REV

770 
WGUS83 KDMX 310752
FLSDMX

Flood Statement
National Weather Service Des Moines IA
252 AM CDT Tue Aug 31 2021

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

  Cedar River at Waterloo affecting Black Hawk County.

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

  Cedar River at Cedar Falls affecting Black Hawk County.

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 300 PM CDT.

&&


IAC013-312000-
/O.EXT.KDMX.FL.W.0003.210831T1043Z-210902T0830Z/
/ALOI4.1.ER.210831T1043Z.210901T0000Z.210901T0830Z.NO/
252 AM CDT Tue Aug 31 2021

...The Flood Warning is now in effect until early Thursday morning...

The Flood Warning continues for
  the Cedar River at Waterloo.
* Until early Thursday morning.
* At 2:00 AM CDT Tuesday the stage was 11.8 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early 
  this morning to a crest of 14.2 feet this evening. It will then 
  fall below flood stage late tonight.
* Impact...At 13.0 feet, Many storm sewers are closed along Black 
  Hawk Creek and the Cedar River. The Fletcher Avenue levee gates 
  are closed.
* Flood History...This crest compares to a previous crest of 14.2 
  feet on 06/15/2013.


&&

LAT...LON 4256 9238 4238 9207 4230 9207 4230 9222
      4251 9245

$$

IAC013-312000-
/O.CON.KDMX.FL.W.0002.000000T0000Z-210902T1800Z/
/CEDI4.2.ER.210830T1548Z.210831T1200Z.210901T1800Z.NO/
252 AM CDT Tue Aug 31 2021

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

The Flood Warning continues for
  the Cedar River at Cedar Falls.
* Until early Thursday afternoon.
* At 1:45 AM CDT Tuesday the stage was 91.3 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 1:45 AM CDT Tuesday was 91.3 feet.
* Forecast...The river is expected to rise to a crest of 92.4 feet 
  this morning. It will then fall below flood stage early tomorrow 
  afternoon.
* Impact...At 92.2 feet, Water is in southeast corner of Gateway 
  Park.
* Flood History...This crest compares to a previous crest of 92.4 
  feet on 04/18/1973.


&&

LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
      4262 9241

$$

IAC013-017-023-312000-
/O.CON.KDMX.FL.W.0001.000000T0000Z-210901T1222Z/
/JANI4.1.ER.210830T0625Z.210830T1445Z.210831T1222Z.NO/
252 AM CDT Tue Aug 31 2021

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

The Flood Warning continues for
  the Cedar River at Janesville.
* Until tomorrow morning.
* At 1:45 AM CDT Tuesday the stage was 14.3 feet and falling.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 1:45 AM CDT Tuesday was 15.0 feet.
* Forecast...The river is expected to fall below flood stage this 
  morning and continue falling to 3.0 feet Monday evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are 
  threatened.
* Flood History...This crest compares to a previous crest of 14.3 
  feet on 04/07/1965.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

Donavon

932 
WGUS83 KDMX 311825
FLSDMX

Flood Statement
National Weather Service Des Moines IA
125 PM CDT Tue Aug 31 2021

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

  Cedar River at Janesville affecting Butler, Bremer and Black Hawk 
  Counties.

IAC013-017-023-311930-
/O.CAN.KDMX.FL.W.0001.000000T0000Z-210831T1825Z/
/JANI4.1.ER.210830T0625Z.210830T1445Z.210831T1706Z.NO/
125 PM CDT Tue Aug 31 2021

...The Flood Warning for the Cedar River at Janesville has been 
cancelled...

The Flood Warning is cancelled for
  the Cedar River at Janesville.
* At 12:45 PM CDT Tuesday the stage was 12.9 feet and falling.
* Flood stage is 13.0 feet.
* Forecast...The river has fallen below flood stage and is expected 
  to fall below 10 feet Wednesday morning.


&&

LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
      4269 9249

$$

KCM

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 27, 7:10 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Worth	65 min
Aug 27, 8:15 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Worth	30 min
Aug 27, 8:21 PM CDT	Flash Flood Warning	DMX	Cerro Gordo, Hancock, Winnebago, Worth	6 hr
Aug 28, 10:17 AM CDT	River Flood Warning	DMX	Black Hawk	4 days

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.