Alert archive / California / River Flood Warnings in 2021

River Flood Warning 1, NWS Eureka, CA

October 24, 2021Mendocino County, California

NWS Eureka, CA issued this river flood warning at Oct 24, 2021, 11:57 AM PDT for Mendocino County, California. It took effect at Oct 24, 2021, 5:00 PM PDT. It was in force for 11 hr.

The area

The outline as issued.

The facts

Issued: Oct 24, 2021, 11:57 AM PDT (18:57 UTC)
In effect from: Oct 24, 2021, 5:00 PM PDT
Expired: Oct 25, 2021, 3:30 AM PDT
In force: 11 hr
Issued by: NWS Eureka, CA
Area: Storm-based polygon
Flood severity: Minor

County Mendocino County, CA

The radar

The Beale AFB radar (KBBX), 140 km from the middle of the area, began a volume at 19:00 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 Russian River near Hopland (HOPC1). The gauge peaked at 16.64 ft at Oct 24, 2021, 10:00 PM PDT.

Minor stage: 15 ft
Moderate stage: 23 ft
Major stage: 26 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11462500, 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.

208 
WGUS46 KEKA 241857
FLWEKA

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Eureka CA
1157 AM PDT Sun Oct 24 2021

...The National Weather Service in Eureka CA has issued a Flood 
Warning for the following rivers in California...

  Russian River near Hopland affecting Mendocino County.

For the Russian River...including Hopland...Minor 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.

Even 6 inches of fast-moving flood water can knock you off your feet 
and a depth of 2 feet will float your car. Never try to walk, swim, 
or drive through such swift water. If you come upon flood waters, 
stop, turn around and go another way.

Additional information is available at weather.gov/eka.

The next statement will be issued this afternoon by 400 PM PDT.

&&


CAC045-250445-
/O.NEW.KEKA.FL.W.0001.211025T0000Z-211025T0432Z/
/HOPC1.1.ER.211025T0000Z.211025T0200Z.211025T0500Z.NO/
1157 AM PDT Sun Oct 24 2021

The National Weather Service in Eureka has issued a

* Flood Warning for
  the Russian River near Hopland.
* From this afternoon to late this evening.
* At 11:00 AM PDT Sunday the stage was 4.49 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this afternoon to a crest of 15.3 feet this evening. It will then 
  fall below flood stage late this evening.
* Impact...At 15.0 feet, Flooding of Highway 175 is expected at the 
  approaches to the Russian River bridge. Expect flooding of 
  cropland on the right bank of river.
* Flood History...This crest compares to a previous crest of 15.6 
  feet on 03/28/2012.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

MKK

5 follow-up statements

400 
WGUS86 KEKA 242247
FLSEKA

Flood Statement
National Weather Service Eureka CA
347 PM PDT Sun Oct 24 2021

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

  Russian River near Hopland affecting Mendocino County.

For the Russian River...including Hopland...Minor 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 weather.gov/eka.

The next statement will be issued this evening at 945 PM PDT.

&&


CAC045-250445-
/O.CON.KEKA.FL.W.0001.211025T0000Z-211025T0432Z/
/HOPC1.1.ER.211025T0000Z.211025T0300Z.211025T0630Z.NO/
347 PM PDT Sun Oct 24 2021

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

The Flood Warning continues for
  the Russian River near Hopland.
* Until late this evening.
* At 3:00 PM PDT Sunday the stage was 12.0 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this afternoon to a crest of 17.1 feet this evening. It will then 
  fall below flood stage later tonight.
* Impact...At 15.0 feet, Flooding of Highway 175 is expected at the 
  approaches to the Russian River bridge. Expect flooding of 
  cropland on the right bank of river.
* Flood History...This crest compares to a previous crest of 15.6 
  feet on 03/28/2012.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

AD

285 
WGUS86 KEKA 250419
FLSEKA

Flood Statement
National Weather Service Eureka CA
919 PM PDT Sun Oct 24 2021

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

  Russian River near Hopland affecting Mendocino County.

For the Russian River...including Hopland...Minor 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.

Flooding is occurring or is imminent. Most flood related deaths 
occur in automobiles. Do not attempt to cross water covered bridges, 
dips, or low water crossings. Never try to cross a flowing stream, 
even a small one, on foot. To escape rising water find another route 
over higher ground.

Additional information is available at weather.gov/eka.

The next statement will be issued late tonight at 115 AM PDT.

&&


CAC045-250830-
/O.EXT.KEKA.FL.W.0001.000000T0000Z-211025T1834Z/
/HOPC1.1.ER.211025T0012Z.211025T0300Z.211025T0634Z.NO/
919 PM PDT Sun Oct 24 2021

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

The Flood Warning continues for
  the Russian River near Hopland.
* Until late tomorrow morning.
* At 8:00 PM PDT Sunday the stage was 16.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is cresting this evening near 16.5 feet, 
  expected to fall below flood stage toward midnight and continue 
  falling to 5 feet Monday evening.
* Impact...At 17.0 feet, Significant flooding of Highway 175 at the 
  approaches to the Russian River bridge. Minor flooding of Highway 
  222 near Ukiah, and in crop land along the left and right banks of 
  the Russian River near Hopland.
* Flood History...This crest compares to a previous crest of 16.5 
  feet on 01/17/2019.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

AD

020 
WGUS86 KEKA 250433
FLSEKA

Flood Statement
National Weather Service Eureka CA
933 PM PDT Sun Oct 24 2021

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

  Russian River near Hopland affecting Mendocino County.

For the Russian River...including Hopland...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Flooding is occurring or is imminent. Most flood related deaths 
occur in automobiles. Do not attempt to cross water covered bridges, 
dips, or low water crossings. Never try to cross a flowing stream, 
even a small one, on foot. To escape rising water find another route 
over higher ground.

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

Additional information is available at weather.gov/eka.

The next statement will be issued at 1230 AM PDT.

&&


CAC045-250730-
/O.EXT.KEKA.FL.W.0001.000000T0000Z-211025T0730Z/
/HOPC1.1.ER.211025T0012Z.211025T0300Z.211025T0634Z.NO/
933 PM PDT Sun Oct 24 2021

...The Flood Warning is now in effect until just after midnight 
tonight...

The Flood Warning continues for
  the Russian River near Hopland.
* Until just after midnight tonight.
* At 8:00 PM PDT Sunday the stage was 16.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is cresting around 16.5 feet and is expected 
  to fall below flood stage toward midnight, then continue falling 
  to 5 feet Monday evening.
* Impact...At 17.0 feet, Significant flooding of Highway 175 at the 
  approaches to the Russian River bridge. Minor flooding of Highway 
  222 near Ukiah, and in crop land along the left and right banks of 
  the Russian River near Hopland.
* Flood History...This crest compares to a previous crest of 16.5 
  feet on 01/17/2019.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

AD

221 
WGUS86 KEKA 250729
FLSEKA

Flood Statement
National Weather Service Eureka CA
1229 AM PDT Mon Oct 25 2021

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

  Russian River near Hopland affecting Mendocino County.

For the Russian River including Hopland, minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Flooding is occurring or is imminent. Most flood related deaths 
occur in automobiles. Do not attempt to cross water covered bridges, 
dips, or low water crossings. Never try to cross a flowing stream, 
even a small one, on foot. To escape rising water find another route 
over higher ground.

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

Additional information is available at weather.gov/eka.

The next statement will be issued early this morning at 330 AM.

&&


CAC045-251030-
/O.EXT.KEKA.FL.W.0001.000000T0000Z-211025T1030Z/
/HOPC1.1.ER.211025T0012Z.211025T0300Z.211025T0634Z.NO/
1229 AM PDT Mon Oct 25 2021

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

The Flood Warning continues for
  the Russian River near Hopland.
* Until early this morning.
* At 8:00 PM Sunday the stage was 16.5 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring.
* Forecast...The river is cresting around 16.5 feet and is expected 
  to fall below flood stage by around 3:30 AM, then continue falling 
  to 5 feet Monday evening.
* At 15.0 feet, flooding of Highway 175 is expected at the 
  approaches to the Russian River bridge. Expect flooding of 
  cropland on the right bank of river.
* Flood History...This crest compares to a previous crest of 16.5 
  feet on 1/17/2019.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

SEC

170 
WGUS86 KEKA 251055
FLSEKA

Flood Statement
National Weather Service Eureka CA
355 AM PDT Mon Oct 25 2021

...The Flood Warning is expired for the following rivers in 
California...

  Russian River near Hopland affecting Mendocino County.

CAC045-251200-
/O.EXP.KEKA.FL.W.0001.000000T0000Z-211025T1030Z/
/HOPC1.1.ER.211025T0012Z.211025T0300Z.211025T0634Z.NO/
355 AM PDT Mon Oct 25 2021

...The Flood Warning for the Russian River near Hopland has 
expired...

The Flood Warning has expired for
  the Russian River near Hopland.
* At 3:45 AM Sunday, the stage was 13.4 feet.
* Flood stage is 15.0 feet.
* Forecast...The river is expected to continue falling to 2.7 feet 
  by early Friday morning.


&&

LAT...LON 3896 12314 3904 12320 3913 12324 3917 12315
      3909 12313 3894 12304

$$

SEC

The office that day

Everything else NWS Eureka, CA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 24, 4:58 AM PDT	Areal Flood Advisory	EKA	Lake, Mendocino	3 hr
Oct 24, 5:48 AM PDT	Areal Flood Advisory	EKA	Lake, Mendocino	5 hr
Oct 24, 7:25 AM PDT	Areal Flood Advisory	EKA	Humboldt, Trinity	4 hr
Oct 24, 8:24 AM PDT	Areal Flood Advisory	EKA	Lake, Mendocino	7 hr
Oct 24, 9:06 AM PDT	River Flood Watch	EKA	Mendocino	3 hr
Oct 24, 10:28 AM PDT	Areal Flood Warning	EKA	Lake, Mendocino	8 hr
Oct 24, 3:52 PM PDT	River Flood Warning	EKA	Mendocino	5 hr

Nearby

River Flood Warnings in California, 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.