Alert archive / Iowa / River Flood Warnings in 2021
River Flood Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this river flood warning at Aug 28, 2021, 10:17 AM CDT for Black Hawk County, Iowa. It took effect at Aug 30, 2021, 12:08 AM CDT. It was in force for 59 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 28, 2021, 10:17 AM CDT (15:17 UTC)
- In effect from
- Aug 30, 2021, 12:08 AM CDT
- Expired
- Sep 1, 2021, 11:32 AM CDT
- In force
- 59 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- Minor
County Black Hawk County, IA
The radar
The Des Moines radar (KDMX), 141 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 Cedar Falls (CEDI4). The gauge peaked at 91.42 ft at Aug 31, 2021, 6:00 AM CDT.
- Action stage
- 85 ft
- Minor stage
- 89 ft
- Moderate stage
- 92 ft
- Major stage
- 94 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05463050, 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
$$
IAC013-290330-
/O.NEW.KDMX.FL.W.0002.210830T0508Z-210902T0317Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1017 AM CDT Sat Aug 28 2021
The National Weather Service in Des Moines has issued a
* Flood Warning for
the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 9:45 AM CDT Saturday the stage was 79.2 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early
Monday morning to a crest of 91.2 feet Monday evening. It will
then fall below flood stage late Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Small17 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
$$
IAC013-290815-
/O.CON.KDMX.FL.W.0002.210830T0508Z-210902T0317Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
307 PM CDT Sat Aug 28 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 2:45 PM CDT Saturday the stage was 79.6 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early
Monday morning to a crest of 91.2 feet Monday evening. It will
then fall below flood stage late Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Small509
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
$$
IAC013-017-023-290945-
/O.CON.KDMX.FL.W.0001.210830T0336Z-210831T1800Z/
/JANI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
442 PM CDT Sat Aug 28 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Janesville.
* From Sunday evening to early Tuesday afternoon.
* At 3:45 PM CDT Saturday the stage was 3.5 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
tomorrow evening to a crest of 13.5 feet Monday morning. It will
then fall below flood stage early Monday afternoon.
* Impact...At 13.0 feet, Evacuation of a trailer court in Janesville
may be needed...due to flooding on West 3rd Street. Much of the
Janesville city park floods. Nearby gravel roads are affected.
* Flood History...This crest compares to a previous crest of 13.4
feet on 09/18/2004.
&&
LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
4269 9249
$$
Krull021
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
$$
IAC013-291415-
/O.EXT.KDMX.FL.W.0002.210830T0527Z-210902T0316Z/
/CEDI4.1.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
909 PM CDT Sat Aug 28 2021
...The Flood Warning is now in effect until late Wednesday evening...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* From late Sunday night to late Wednesday evening.
* At 8:45 PM CDT Saturday the stage was 80.2 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early
Monday morning to a crest of 91.1 feet Monday evening. It will
then fall below flood stage late Tuesday evening.
* Impact...At 91.0 feet, Water covers Big Woods Road south of
Dunkerton Road. Water also covers the north parking lot of Island
Park.
* Flood History...This crest compares to a previous crest of 91.2
feet on 05/01/1975.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Krull688
WGUS83 KDMX 290805
FLSDMX
Flood Statement
National Weather Service Des Moines IA
305 AM CDT Sun Aug 29 2021
...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 afternoon at 315 PM CDT.
&&
IAC013-292015-
/O.CON.KDMX.FL.W.0002.210830T0527Z-210902T0316Z/
/CEDI4.1.ER.210830T0527Z.210831T0000Z.210901T0316Z.NO/
305 AM 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 late Wednesday evening.
* At 1:45 AM CDT Sunday the stage was 81.0 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 91.1 feet tomorrow 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.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Martin989
WGUS83 KDMX 291518
FLSDMX
Flood Statement
National Weather Service Des Moines IA
1018 AM CDT Sun Aug 29 2021
...The Flood Warning is extended for the following rivers in Iowa...
Cedar River at Janesville affecting Butler, Bremer and Black Hawk
Counties.
...The Flood Warning continues for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1030 PM CDT.
&&
IAC013-300330-
/O.EXT.KDMX.FL.W.0002.210830T0600Z-210902T0150Z/
/CEDI4.1.ER.210830T0600Z.210831T0600Z.210901T0150Z.NO/
1018 AM CDT Sun Aug 29 2021
...The Flood Warning is now in effect until Wednesday evening...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* From late tonight to Wednesday evening.
* At 9:45 AM CDT Sunday the stage was 83.6 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just
after midnight tonight to a crest of 91.3 feet early Tuesday
morning. It will then fall below flood stage Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
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
$$
Small083
WGUS83 KDMX 300039
FLSDMX
Flood Statement
National Weather Service Des Moines IA
739 PM CDT Sun Aug 29 2021
...The Flood Warning continues for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
Cedar River at Janesville affecting Butler, Bremer and Black Hawk
Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued Monday morning at 745 AM CDT.
&&
IAC013-301245-
/O.CON.KDMX.FL.W.0002.210830T0600Z-210902T0150Z/
/CEDI4.1.ER.210830T0600Z.210831T0600Z.210901T0150Z.NO/
739 PM CDT Sun Aug 29 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* From late tonight to Wednesday evening.
* At 6:45 PM CDT Sunday the stage was 85.0 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just
after midnight tonight to a crest of 91.3 feet early Tuesday
morning. It will then fall below flood stage Tuesday evening.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
* Flood History...This crest compares to a previous crest of 91.2
feet on 05/01/1975.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
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
$$
Krull788
WGUS83 KDMX 300152
FLSDMX
Flood Statement
National Weather Service Des Moines IA
852 PM CDT Sun Aug 29 2021
...The Flood Warning is extended for the following rivers in Iowa...
Cedar River at Janesville affecting Butler, Bremer and Black Hawk
Counties.
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued Monday morning at 900 AM CDT.
&&
IAC013-017-023-301400-
/O.EXT.KDMX.FL.W.0001.210830T1232Z-210901T0622Z/
/JANI4.1.ER.210830T1232Z.210830T1800Z.210831T0622Z.NO/
852 PM CDT Sun Aug 29 2021
...The Flood Warning is now in effect until early Wednesday
morning...
The Flood Warning continues for
the Cedar River at Janesville.
* From Monday morning to early Wednesday morning.
* At 7:45 PM CDT Sunday the stage was 10.3 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage
tomorrow morning to a crest of 14.0 feet early tomorrow afternoon.
It will then fall below flood stage early Tuesday morning.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are
threatened.
&&
LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
4269 9249
$$
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
$$
Krull411
WGUS83 KDMX 301216
FLSDMX
Flood Statement
National Weather Service Des Moines IA
716 AM CDT Mon Aug 30 2021
...The Flood Warning is extended for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 715 PM CDT.
&&
IAC013-310030-
/O.EXT.KDMX.FL.W.0002.210830T1548Z-210902T0912Z/
/CEDI4.1.ER.210830T1548Z.210831T1200Z.210901T0912Z.NO/
716 AM CDT Mon Aug 30 2021
...The Flood Warning is now in effect until early Thursday morning...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* From this morning to early Thursday morning.
* At 6:45 AM CDT Monday the stage was 87.5 feet and rising.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late
this morning to a crest of 91.6 feet tomorrow morning. It will
then fall below flood stage early Wednesday morning.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Martin965
WGUS83 KDMX 301649
FLSDMX
Flood Statement
National Weather Service Des Moines IA
Issued by National Weather Service Quad Cities IA IL
1149 AM CDT Mon Aug 30 2021
...The Flood Warning continues for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
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 late tonight at 1200 AM CDT.
&&
IAC013-310500-
/O.CON.KDMX.FL.W.0002.000000T0000Z-210902T0912Z/
/CEDI4.1.ER.210830T1548Z.210831T1200Z.210901T0912Z.OO/
1149 AM CDT Mon Aug 30 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until early Thursday morning.
* At 10:45 AM CDT Monday the stage was 88.5 feet.
* Flood stage is 89.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this
afternoon to a crest of 91.6 feet tomorrow morning. It will then
fall below flood stage Wednesday morning.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
* Flood History...This crest compares to a previous crest of 91.7
feet on 08/13/1980.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$425
WGUS43 KDMX 301738
FLWDMX
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Des Moines IA
1238 PM CDT Mon Aug 30 2021
...Forecast flooding changed from Minor to Moderate severity and
increased in duration for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 1245 AM CDT.
&&
IAC013-310545-
/O.EXT.KDMX.FL.W.0002.000000T0000Z-210902T1312Z/
/CEDI4.2.ER.210830T1548Z.210831T1200Z.210901T1312Z.NO/
1238 PM CDT Mon Aug 30 2021
...Forecast flooding increased from Minor to Moderate severity and
increased in duration until Thursday morning...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until Thursday morning.
* At 10:45 AM CDT Monday the stage was 88.5 feet and rising.
* Flood stage is 89.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise to a crest of 92.6 feet
tomorrow morning. It will then fall below flood stage Wednesday
morning.
* Impact...At 92.7 feet, Water covers Big Woods Road north of
Dunkerton Road. Water covers Ford Road south of Fitkin Road.
* Flood History...This crest compares to a previous crest of 92.5
feet on 06/11/1974.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Zogg834
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
$$
REV770
WGUS83 KDMX 310752
FLSDMX
Flood Statement
National Weather Service Des Moines IA
252 AM CDT Tue Aug 31 2021
...The Flood Warning is extended for the following rivers in Iowa...
Cedar River at Waterloo affecting Black Hawk County.
...The Flood Warning continues for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
Cedar River at Janesville affecting Butler, Bremer and Black Hawk
Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 300 PM CDT.
&&
IAC013-312000-
/O.EXT.KDMX.FL.W.0003.210831T1043Z-210902T0830Z/
/ALOI4.1.ER.210831T1043Z.210901T0000Z.210901T0830Z.NO/
252 AM CDT Tue Aug 31 2021
...The Flood Warning is now in effect until early Thursday morning...
The Flood Warning continues for
the Cedar River at Waterloo.
* Until early Thursday morning.
* At 2:00 AM CDT Tuesday the stage was 11.8 feet and rising.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage early
this morning to a crest of 14.2 feet this evening. It will then
fall below flood stage late tonight.
* Impact...At 13.0 feet, Many storm sewers are closed along Black
Hawk Creek and the Cedar River. The Fletcher Avenue levee gates
are closed.
* Flood History...This crest compares to a previous crest of 14.2
feet on 06/15/2013.
&&
LAT...LON 4256 9238 4238 9207 4230 9207 4230 9222
4251 9245
$$
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
$$
IAC013-017-023-312000-
/O.CON.KDMX.FL.W.0001.000000T0000Z-210901T1222Z/
/JANI4.1.ER.210830T0625Z.210830T1445Z.210831T1222Z.NO/
252 AM CDT Tue Aug 31 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Janesville.
* Until tomorrow morning.
* At 1:45 AM CDT Tuesday the stage was 14.3 feet and falling.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 1:45 AM CDT Tuesday was 15.0 feet.
* Forecast...The river is expected to fall below flood stage this
morning and continue falling to 3.0 feet Monday evening.
* Impact...At 14.0 feet, Areas of Janesville south of 8th Street are
threatened.
* Flood History...This crest compares to a previous crest of 14.3
feet on 04/07/1965.
&&
LAT...LON 4269 9230 4261 9236 4260 9249 4262 9249
4269 9249
$$
Donavon026
WGUS83 KDMX 311601
FLSDMX
Flood Statement
National Weather Service Des Moines IA
1101 AM CDT Tue Aug 31 2021
...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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued this evening by 900 PM CDT.
&&
IAC013-010415-
/O.EXT.KDMX.FL.W.0002.000000T0000Z-210901T1622Z/
/CEDI4.1.ER.210830T1548Z.210831T1045Z.210901T1621Z.NO/
1101 AM CDT Tue Aug 31 2021
...The Flood Warning is now in effect until late tomorrow morning...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until late tomorrow morning.
* At 9:45 AM CDT Tuesday the stage was 91.3 feet and falling.
* Flood stage is 89.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 9:45 AM CDT Tuesday was 91.4 feet.
* Forecast...The river is expected to rise to a crest of 91.4 feet
this afternoon. It will then fall below flood stage late tomorrow
morning.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
KCM816
WGUS83 KDMX 311901
FLSDMX
Flood Statement
National Weather Service Des Moines IA
201 PM CDT Tue Aug 31 2021
...The Flood Warning is extended for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued by 1000 PM CDT.
&&
IAC013-010715-
/O.EXT.KDMX.FL.W.0002.000000T0000Z-210901T2121Z/
/CEDI4.1.ER.210830T1548Z.210831T1045Z.210901T2120Z.NO/
201 PM CDT Tue Aug 31 2021
...The Flood Warning is now in effect until tomorrow afternoon...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until tomorrow afternoon.
* At 12:45 PM CDT Tuesday the stage was 91.2 feet and falling.
* Flood stage is 89.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 12:45 PM CDT Tuesday was 91.4 feet.
* Forecast...The river is expected to fall below flood stage
tomorrow afternoon and continue falling to below 85 feet Thursday
afternoon.
* Impact...At 91.2 feet, Water covers portions of Lake Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
KCM244
WGUS83 KDMX 010202
FLSDMX
Flood Statement
National Weather Service Des Moines IA
902 PM CDT Tue Aug 31 2021
...The Flood Warning is extended 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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued Wednesday morning by 900 AM CDT.
&&
IAC013-011415-
/O.EXT.KDMX.FL.W.0002.000000T0000Z-210902T0001Z/
/CEDI4.1.ER.210830T1548Z.210831T1045Z.210902T0000Z.NO/
902 PM CDT Tue Aug 31 2021
...The Flood Warning is now in effect until tomorrow evening...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until tomorrow evening.
* At 7:45 PM CDT Tuesday the stage was 90.6 feet and falling.
* Flood stage is 89.0 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 Tuesday was 91.4 feet.
* Forecast...The river is expected to fall below flood stage
tomorrow evening.
* Impact...At 90.3 feet, Water covers Riverside Drive south of Beech
Street.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Hagenhoff298
WGUS83 KDMX 010943
FLSDMX
Flood Statement
National Weather Service Des Moines IA
443 AM CDT Wed Sep 1 2021
...The Flood Warning continues for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued later today.
&&
IAC013-012145-
/O.CON.KDMX.FL.W.0002.000000T0000Z-210902T0001Z/
/CEDI4.1.ER.210830T1548Z.210831T1045Z.210902T0000Z.NO/
443 AM CDT Wed Sep 1 2021
...The Flood Warning remains in effect...
The Flood Warning continues for
the Cedar River at Cedar Falls.
* Until this evening.
* At 3:45 AM CDT Wednesday the stage was 89.7 feet and falling.
* Flood stage is 89.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:45 AM CDT Wednesday was 90.9 feet.
* Forecast...The river is expected to fall below flood stage this
evening and continue falling to 80.6 feet Tuesday evening.
* Impact...At 89.7 feet, Water covers the road at 1712 and 1118
Cottage Row Road.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
Ansorge698
WGUS83 KDMX 011632
FLSDMX
Flood Statement
National Weather Service Des Moines IA
1132 AM CDT Wed Sep 1 2021
...The Flood Warning is cancelled for the following rivers in Iowa...
Cedar River at Cedar Falls affecting Black Hawk County.
IAC013-011745-
/O.CAN.KDMX.FL.W.0002.000000T0000Z-210901T1632Z/
/CEDI4.1.ER.210830T1548Z.210831T1045Z.210901T1400Z.NO/
1132 AM CDT Wed Sep 1 2021
...The Flood Warning for the Cedar River at Cedar Falls has been
cancelled...
The Flood Warning is cancelled for
the Cedar River at Cedar Falls.
* At 10:45 AM CDT Wednesday the stage was 88.7 feet and falling.
* Flood stage is 89.0 feet.
* Forecast...The river is expected to fall below Action Stage or
85.0 feet by Thursday afternoon and to 80.3 feet next Wednesday
morning.
&&
LAT...LON 4256 9238 4251 9245 4258 9255 4262 9255
4262 9241
$$
PodrazikThe 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, Bremer, Butler | 3 days |
Nearby
River Flood Warnings in Iowa, 2021Every 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.