River Flood Warning 28, NWS Seattle, WA

Issued

Feb 22, 2021, 11:45 AM PST (19:45 UTC)

In effect from

Feb 22, 2021, 3:00 PM PST

Expired

Feb 22, 2021, 7:03 PM PST

In force

4 hr

Issued by

NWS Seattle, WA

Area

Storm-based polygon

Flood severity

Minor

County King County, WA

The Seattle radar (KATX), 75 km from the middle of the area, began a volume at 19:43 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.

Written for the forecast point Tolt River near Carnation (TOLW1). The gauge peaked at 9.17 ft at Feb 22, 2021, 3:00 PM PST.

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12148500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

984 
WGUS46 KSEW 221945
FLWSEW

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Seattle WA
1145 AM PST Mon Feb 22 2021

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

  Tolt River Above Carnation affecting King County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 by this afternoon at 530 PM PST.

&&


WAC033-230130-
/O.NEW.KSEW.FL.W.0028.210222T2300Z-210223T0130Z/
/TOLW1.1.ER.210222T2325Z.210223T0000Z.210223T0130Z.NO/
1145 AM PST Mon Feb 22 2021

The National Weather Service in Seattle has issued a

* Flood Warning for
  the Tolt River Above Carnation.
* For this afternoon.
* At 10:15 AM PST Monday the flow was 3440.0 cfs.
* Flood flow is 5000.0 cfs.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this afternoon to a crest of 5161.9 cfs. It will then fall below 
  flood stage late this afternoon. The river forecast will be 
  monitored based on additional precipitation received.
* Impact...At 5000.0 cfs, the Tolt River will flood Tolt River Rd NE 
  and many driveways. Some homes in the San Souci area could be 
  inaccessible due to deep and quick flood waters. This river level 
  on the Tolt corresponds to a phase 3 flood in the King County 
  flood system.


&&

LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
      4771 12189 4774 12184

$$

21

181 
WGUS86 KSEW 230127
FLSSEW

Flood Statement
National Weather Service Seattle WA
527 PM PST Mon Feb 22 2021

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

  Tolt River Above Carnation affecting King County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 by this evening at 930 PM PST.

&&


WAC033-230530-
/O.EXT.KSEW.FL.W.0028.000000T0000Z-210223T0529Z/
/TOLW1.1.ER.210222T2022Z.210222T2148Z.210223T0248Z.NO/
527 PM PST Mon Feb 22 2021

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

The Flood Warning continues for
  the Tolt River Above Carnation.
* Until this evening.
* At 5:00 PM PST Monday the flow was 4800 cfs.
* Flood flow is 5000.0 cfs.
* Minor flooding is forecast.
* Recent Activity...The maximum river flow in the 24 hours ending at 
  1:48 PM PST Monday was 5161.9 cfs.
* Forecast...The river is expected to remain near flood stage early 
  this evening, before falling later tonight.
* Impact...At 3500.0 cfs, the Tolt River will spill over its banks 
  with water over 353rd Ave NE and some driveways in the San Souci 
  area. This river level on the Tolt corresponds to a phase 2 flood 
  in the King County flood system.


&&

LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
      4771 12189 4774 12184

$$

12

328 
WGUS86 KSEW 230303
FLSSEW

Flood Statement
National Weather Service Seattle WA
703 PM PST Mon Feb 22 2021

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

  Tolt River Above Carnation affecting King County.

WAC033-230415-
/O.CAN.KSEW.FL.W.0028.000000T0000Z-210223T0303Z/
/TOLW1.1.ER.210222T2022Z.210222T2148Z.210223T0248Z.NO/
703 PM PST Mon Feb 22 2021

...The Flood Warning for the Tolt River Above Carnation has been 
cancelled...

The Flood Warning is cancelled for
  the Tolt River Above Carnation.
* At 6:15 PM PST Monday the flow was 4190.0 cfs.
* Forecast...The river is expected to continue falling overnight.


&&

LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
      4771 12189 4774 12184

$$

12

River Flood Warnings in Washington, 2021Every river flood warning in 2021

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.