Alert archive / Washington / River Flood Warnings in 2021

River Flood Warning 4, NWS Spokane, WA

November 16, 2021Okanogan County, Washington

NWS Spokane, WA issued this river flood warning at Nov 16, 2021, 5:44 AM PST for Okanogan County, Washington. It took effect at Nov 16, 2021, 6:07 PM PST. It was in force for 26 hr.

The area

The outline as issued.

The facts

Issued: Nov 16, 2021, 5:44 AM PST (13:44 UTC)
In effect from: Nov 16, 2021, 6:07 PM PST
Expired: Nov 17, 2021, 7:50 PM PST
In force: 26 hr
Issued by: NWS Spokane, WA
Area: Storm-based polygon
Flood severity: Minor

County Okanogan County, WA

The radar

The Spokane radar (KOTX), 177 km from the middle of the area, began a volume at 13:44 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 Okanogan River near Tonasket (TONW1). The gauge peaked at 15.48 ft at Nov 17, 2021, 11:00 AM PST.

Action stage: 14 ft
Minor stage: 15 ft
Moderate stage: 17 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12445000, 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.

790 
WGUS46 KOTX 161344
FLWOTX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Spokane WA
544 AM PST Tue Nov 16 2021

...The National Weather Service in Spokane WA has issued a Flood 
Warning for the following rivers in Washington...

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...Minor flooding is 
forecast.

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.

Additional information is available at www.weather.gov.

The next update will be sent this evening at 800 PM PST.

&&

WAC047-170400-
/O.NEW.KOTX.FL.W.0004.211117T0207Z-211119T1746Z/
/TONW1.1.RS.211117T0207Z.211118T0000Z.211119T0545Z.NO/
544 AM PST Tue Nov 16 2021

...FLOOD WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY 
MORNING...
...REPLACES RIVER FLOOD WATCH...

* WHAT...Minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...From this evening to late Friday morning.

* IMPACTS...At 15.0 feet, Minor flooding of low-lying areas is 
  likely between Oroville and Tonasket.
  At 16.0 feet, Pasture land between Rodeo Track Road and Benton 
  Street, on the east side of the river near Omak, will begin to 
  flood.
  At 17.0 feet, Low lying fields and pasture land in the flood plain 
  along the Okanogan river valley, from Oroville to Okanogan, will 
  be flooded. Some homes near the river in Okanogan may experience 
  some basement flooding from seepage. Water will be between the 
  railroad and Highway 97 near Cordell, south of Oroville. Water 
  will be against the shoulder of Omak River Road across from 
  Wanacut Creek.

* ADDITIONAL DETAILS...
  - At 5:15 AM PST Tuesday the stage was 12.9 feet.
  - Forecast...The river is expected to rise above flood stage
    this evening to a crest of 16.9 feet tomorrow afternoon. It
    will then fall below flood stage late Thursday evening.
  - Flood stage is 15.0 feet.
  - Flood History...This crest compares to a previous crest of
    16.9 feet on 06/02/1986.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

JW

6 follow-up statements

057 
WGUS86 KOTX 161832
FLSOTX

Flood Statement
National Weather Service Spokane WA
1032 AM PST Tue Nov 16 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...Minor flooding is 
forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Caution is urged when walking near riverbanks.

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 at 1045 PM PST.

&&

WAC047-170645-
/O.EXT.KOTX.FL.W.0004.211117T0321Z-211119T1303Z/
/TONW1.1.RS.211117T0321Z.211118T0000Z.211119T0103Z.NO/
1032 AM PST Tue Nov 16 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH LATE 
THURSDAY NIGHT...

* WHAT...Minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...From this evening to early Friday morning.

* IMPACTS...At 17.0 feet, Low lying fields and pasture land in the 
  flood plain along the Okanogan river valley, from Oroville to 
  Okanogan, will be flooded. Some homes near the river in Okanogan 
  may experience some basement flooding from seepage. Water will be 
  between the railroad and Highway 97 near Cordell, south of 
  Oroville. Water will be against the shoulder of Omak River Road 
  across from Wanacut Creek.

* ADDITIONAL DETAILS...
  - At 10:15 AM PST Tuesday the stage was 13.3 feet.
  - Forecast...The river is expected to rise above flood stage
    this evening to a crest of 16.8 feet tomorrow afternoon. It
    will then fall below flood stage Thursday afternoon.
  - Flood stage is 15.0 feet.
  - Flood History...This crest compares to a previous crest of
    16.8 feet on 05/25/1951.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

GKOCH

192 
WGUS86 KOTX 162022
FLSOTX

Flood Statement
National Weather Service Spokane WA
1222 PM PST Tue Nov 16 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...Minor flooding is 
forecast.

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.

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued late tonight at 1230 AM PST.

&&

WAC047-170830-
/O.EXT.KOTX.FL.W.0004.211117T0347Z-211118T2128Z/
/TONW1.1.RS.211117T0347Z.211117T1800Z.211118T0928Z.NO/
1222 PM PST Tue Nov 16 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH THURSDAY 
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...From this evening to early Thursday afternoon.

* IMPACTS...At 17.0 feet, Low lying fields and pasture land in the 
  flood plain along the Okanogan river valley, from Oroville to 
  Okanogan, will be flooded. Some homes near the river in Okanogan 
  may experience some basement flooding from seepage. Water will be 
  between the railroad and Highway 97 near Cordell, south of 
  Oroville. Water will be against the shoulder of Omak River Road 
  across from Wanacut Creek.

* ADDITIONAL DETAILS...
  - At 11:15 AM PST Tuesday the stage was 13.4 feet.
  - Forecast...The river is expected to rise above flood stage
    this evening to a crest of 16.5 feet late tomorrow morning.
    It will then fall below flood stage early Thursday morning.
  - Flood stage is 15.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

GKOCH

860 
WGUS86 KOTX 170243
FLSOTX

Flood Statement
National Weather Service Spokane WA
643 PM PST Tue Nov 16 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

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

  Similkameen River near Nighthawk affecting Okanogan County.

For the SIMILKAMEEN RIVER...including Nighthawk...Minor flooding is 
forecast.

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.



Additional information is available at www.weather.gov.

The next statement will be issued early Wednesday morning.Wednesday 
morning at 800 AM PST.

&&

WAC047-171600-
/O.EXT.KOTX.FL.W.0005.000000T0000Z-211117T1921Z/
/NITW1.1.ER.211116T1826Z.211116T2300Z.211117T0721Z.NO/
643 PM PST Tue Nov 16 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY 
MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Similkameen River near Nighthawk.

* WHEN...Until late Wednesday morning.

* IMPACTS...At 13.0 feet, The Similkameen River will begin to back 
  up into Palmer Lake and water will be a few inches deep over 
  Chopaka Road. Low-lying pastures and agricultural land around 
  Chopaka and Allemandi Roads will be flooded. Water will begin to 
  encroach on farm land just downstream of the Nighthawk bridge.
  At 14.3 feet, Water may begin to come over Loomis-Oroville road on 
  the south end of Palmer Lake.

* ADDITIONAL DETAILS...
  - At 5:30 PM PST Tuesday the stage was 14.3 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 5:30 PM PST Tuesday was 14.4 feet.
  - Forecast...The river has crested and is expected to fall
    below flood stage early Wednesday morning and continue to
    recede to 10.0 feet Wednesday evening.
  - Flood stage is 14.0 feet.
  - Flood History...This crest compares to a previous crest of
    14.3 feet on 05/22/1991.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4885 11957 4889 11982 4900 11980 4900 11943
      4890 11947


$$

WAC047-171600-
/O.EXT.KOTX.FL.W.0004.211117T0447Z-211118T2128Z/
/TONW1.1.RS.211117T0447Z.211117T1800Z.211118T0928Z.NO/
643 PM PST Tue Nov 16 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH THURSDAY 
AFTERNOON...

* WHAT...Minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...Until early Thursday afternoon.

* IMPACTS...At 15.0 feet, Minor flooding of low-lying areas is 
  likely between Oroville and Tonasket.
  At 16.0 feet, Pasture land between Rodeo Track Road and Benton 
  Street, on the east side of the river near Omak, will begin to 
  flood.
  At 17.0 feet, Low lying fields and pasture land in the flood plain 
  along the Okanogan river valley, from Oroville to Okanogan, will 
  be flooded. Some homes near the river in Okanogan may experience 
  some basement flooding from seepage. Water will be between the 
  railroad and Highway 97 near Cordell, south of Oroville. Water 
  will be against the shoulder of Omak River Road across from 
  Wanacut Creek.

* ADDITIONAL DETAILS...
  - At 6:15 PM PST Tuesday the stage was 14.2 feet.
  - Forecast...The river is expected to rise above flood stage
    overnight to a crest of 16.5 feet late Wednesday morning. It
    will then fall below flood stage early Thursday morning.
  - Flood stage is 15.0 feet.
  - Flood History...This crest compares to a previous crest of
    16.5 feet on 05/28/1938.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

SB

509 
WGUS86 KOTX 171325
FLSOTX

Flood Statement
National Weather Service Spokane WA
525 AM PST Wed Nov 17 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...Minor flooding is 
forecast.

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 afternoon at 530 PM PST.

&&

WAC047-180130-
/O.EXT.KOTX.FL.W.0004.000000T0000Z-211118T2158Z/
/TONW1.1.RS.211117T1020Z.211118T0000Z.211118T0958Z.NO/
525 AM PST Wed Nov 17 2021

...FLOOD WARNING REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...Until early tomorrow afternoon.

* IMPACTS...At 16.0 feet, Pasture land between Rodeo Track Road and 
  Benton Street, on the east side of the river near Omak, will begin 
  to flood.

* ADDITIONAL DETAILS...
  - At 4:15 AM PST Wednesday the stage was 15.2 feet.
  - Forecast...The river is expected to rise to a crest of 15.9
    feet late this afternoon. It will then fall below flood stage
    just after midnight tonight.
  - Flood stage is 15.0 feet.
  - Flood History...This crest compares to a previous crest of
    15.8 feet on 06/02/2020.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

JS

629 
WGUS86 KOTX 172144
FLSOTX

Flood Statement
National Weather Service Spokane WA
144 PM PST Wed Nov 17 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...Minor flooding is 
occurring.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Additional information is available at www.weather.gov.

The next statement will be issued this evening at 1100 PM PST.

&&

WAC047-180700-
/O.EXT.KOTX.FL.W.0004.000000T0000Z-211118T1724Z/
/TONW1.1.RS.211117T1020Z.211117T2000Z.211118T0524Z.NO/
144 PM PST Wed Nov 17 2021

...FLOOD WARNING NOW IN EFFECT FROM THIS AFTERNOON THROUGH THURSDAY 
MORNING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Okanogan River near Tonasket.

* WHEN...Until late tomorrow morning.

* IMPACTS...At 15.0 feet, Minor flooding of low-lying areas is 
  likely between Oroville and Tonasket.

* ADDITIONAL DETAILS...
  - At 1:15 PM PST Wednesday the stage was 15.4 feet.
  - Forecast...The river crested at 14.5 feet earlier this
    morning and will recede through the afternoon and evening. It
    will fall below flood stage late this evening.
  - Flood stage is 15.0 feet.
  - The Okanogan River usually floods or runs high in the spring.
    Fall and winter flooding is extremely unusual.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

LN

970 
WGUS86 KOTX 180350
FLSOTX

Flood Statement
National Weather Service Spokane WA
750 PM PST Wed Nov 17 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

WAC047-180500-
/O.CAN.KOTX.FL.W.0004.000000T0000Z-211118T0350Z/
/TONW1.1.RS.211117T1020Z.211117T2000Z.000000T0000Z.NO/
750 PM PST Wed Nov 17 2021

...FLOOD WARNING IS CANCELLED THIS EVENING...

The Flood Warning is cancelled for
  the Okanogan River near Tonasket.

* ADDITIONAL DETAILS...
  - At 7:15 PM PST Wednesday the stage was 14.95 feet.
  - Forecast...The river is expected to fall to 10.9 feet
    Thursday afternoon.
  - http://www.weather.gov/safety/flood

&&

              Fld   Observed           Forecasts (10 pm PST)    
Location      Stg   Stg   Day/Time     Thu   Fri   Sat          

Okanogan River
Tonasket      15.0  15.0  Wed 7 pm PST 9.6   7.8   7.2          


&&

LAT...LON 4895 11945 4893 11932 4825 11951 4832 11968


$$

JCLEV

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 15, 5:05 PM PST	River Flood Watch	OTX	Okanogan	13 hr
Nov 16, 12:19 PM PST	River Flood Warning	OTX	Okanogan	14 hr

Nearby

River Flood Warnings in Washington, 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.