Alert archive / Washington / River Flood Watches in 2021

River Flood Watch 2, NWS Spokane, WA

November 15, 2021Okanogan County, Washington

NWS Spokane, WA issued this river flood watch at Nov 15, 2021, 9:01 AM PST for Okanogan County, Washington. It took effect at Nov 16, 2021, 4:40 PM PST. It was in force for 13 hr.

The area

The outline as issued.

The facts

Issued
Nov 15, 2021, 9:01 AM PST (17:01 UTC)
In effect from
Nov 16, 2021, 4:40 PM PST
Expired
Nov 17, 2021, 5:18 AM PST
In force
13 hr
Issued by
NWS Spokane, WA
Area
Storm-based polygon
Flood severity
None

County Okanogan County, WA

The radar

The Spokane radar (KOTX), 177 km from the middle of the area, began a volume at 17:03 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.

actionminormoderatemajor5101511/1511/1611/1711/18
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.

359 
WGUS66 KOTX 151701
FFAOTX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Spokane WA
901 AM PST Mon Nov 15 2021

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

  Okanogan River near Tonasket affecting Okanogan County.

For the OKANOGAN RIVER...including Tonasket...flooding is possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 515 PM PST.

&&

WAC047-160115-
/O.NEW.KOTX.FL.A.0002.211117T0040Z-211118T2333Z/
/TONW1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
901 AM PST Mon Nov 15 2021

...FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY 
AFTERNOON...

* WHAT...Flooding is possible.

* WHERE...Okanogan River near Tonasket.

* WHEN...From Tuesday afternoon to Thursday 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 8:15 AM PST Monday the stage was 6.6 feet.
  - Forecast...Flood stage may be reached tomorrow afternoon.
  - Flood stage is 15.0 feet.
  - http://www.weather.gov/safety/flood

&&

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

$$

GKOCH
1 follow-up statement
223 
WGUS66 KOTX 171318
FFAOTX

Flood Watch
National Weather Service Spokane WA
518 AM PST Wed Nov 17 2021

...A Flood Watch was Upgraded to a Flood Warning on November 16th 
for the following rivers in Washington...

  Okanogan River near Tonasket affecting Okanogan County.

WAC047-171430-
/O.CAN.KOTX.FL.A.0002.000000T0000Z-211117T1318Z/
/TONW1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
518 AM PST Wed Nov 17 2021

...FLOOD WATCH IS NO LONGER IN EFFECT AND HAS BEEN REPLACED WITH A 
FLOOD WARNING...

The Flood Watch has been replaced with a flood warning
   for the Okanogan River near Tonasket.

* ADDITIONAL DETAILS...
  - At 4:15 AM PST, November 17 the stage was 15.17 feet.
  - Forecast...The river is forecast to continue to rise and
    crest at 15.8 feet this afternoon.
  - http://www.weather.gov/safety/flood

&&

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

$$

JS

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 14, 4:16 PM PSTRiver Flood WarningOTXChelan34 hr
Nov 14, 9:16 PM PSTHigh Wind WarningOTXAdams, Asotin, Douglas, Garfield, Grant, Lincoln and 3 more25 hr
Nov 14, 9:16 PM PSTWind AdvisoryOTXAdams, Asotin, Chelan, Douglas, Ferry, Garfield and 7 more27 hr
Nov 15, 3:15 AM PSTWinter Weather AdvisoryOTXChelan31 hr
Nov 15, 9:00 AM PSTRiver Flood WarningOTXOkanogan12 hr

Nearby

River Flood Watches in Washington, 2021Every river flood watch 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.