Alert archive / Washington / River Flood Warnings in 2021

River Flood Warning 29, NWS Seattle, WA

February 22, 2021King County, Washington

NWS Seattle, WA issued this river flood warning at Feb 22, 2021, 1:54 PM PST for King County, Washington. It took effect at Feb 22, 2021, 11:46 PM PST. It was in force for .

The area

The outline as issued.

The facts

Issued: Feb 22, 2021, 1:54 PM PST (21:54 UTC)
In effect from: Feb 22, 2021, 11:46 PM PST
Expired: Feb 22, 2021, 11:25 PM PST
In force
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County King County, WA

The radar

The Seattle radar (KATX), 69 km from the middle of the area, began a volume at 21:54 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 Snoqualmie River near Carnation (CRNW1). The gauge peaked at 53.03 ft at Feb 23, 2021, 3:00 AM PST.

Action stage: 50.7 ft
Minor stage: 54 ft
Moderate stage: 56 ft
Major stage: 58 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12149000, 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.

358 
WGUS46 KSEW 222154
FLWSEW

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

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

  Snoqualmie River Near 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 late tonight at 1200 AM PST.

&&


WAC033-230800-
/O.NEW.KSEW.FL.W.0029.210223T0800Z-210223T1900Z/
/CRNW1.1.ER.210223T0730Z.210223T1200Z.210224T0000Z.NO/
154 PM PST Mon Feb 22 2021

The National Weather Service in Seattle has issued a

* Flood Warning for
  the Snoqualmie River Near Carnation.
* From late tonight to Tuesday morning.
* At 12:15 PM PST Monday the stage was 49.7 feet.
* Flood stage is 54.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this evening to a crest of 54.9 feet early Tuesday morning. It 
  will then fall below flood stage Tuesday afternoon.
* Impact...At 54.0 feet, the Snoqualmie River will flood much of the 
  farm land and several roads from Fall City downstream through 
  Carnation and Duvall.


&&

LAT...LON 4756 12196 4770 12204 4784 12202 4783 12194
      4771 12193 4761 12188

$$

21

2 follow-up statements

748 
WGUS86 KSEW 230429
FLSSEW

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

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

  Skokomish River At Potlatch affecting Mason County.

  Snoqualmie River Near Carnation affecting King County.

  Newaukum River Near Chehalis affecting Lewis County.

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

  South Prairie Creek at South Prairie affecting Pierce County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flood Warning means that flooding is imminent or occurring. All 
interested parties should take necessary precautions immediately.

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 Tuesday morning at 630 AM PST.

&&


WAC041-231430-
/O.EXT.KSEW.FL.W.0030.210223T0429Z-210224T0316Z/
/NEWW1.1.ER.210223T0350Z.210223T1200Z.210223T1816Z.NO/
829 PM PST Mon Feb 22 2021

...The Flood Warning is now in effect until tomorrow evening...

The Flood Warning continues for
  the Newaukum River Near Chehalis.
* From this evening to Tuesday evening.
* At 7:45 PM PST Monday the stage was 202.5 feet.
* Flood stage is 202.5 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Forecast...The river is expected to rise to a crest of 204.3 feet 
  late tonight. It will then fall below flood stage Tuesday morning.
* Impact...At 202.5 feet, flood waters will inundate many roads and 
  residential and commercial areas along the Newaukum River and its 
  forks.  Flooding in some areas may be deep and hazardous 
  especially near rivers. Impacted roadways and surrounding areas 
  include Jackson Hwy. and Tune, Rush, Sommerville, Griel, Hamilton, 
  Tauscher, Guerrier, Kirkland, Macomber, Rice, Senn, Lucas Creek, 
  Middle Fork, and North Fork Roads.  A stage of 10.5 on the 
  Newaukum roughly corresponds to Phase 2 flood in the Lewis County 
  flood system.


&&

LAT...LON 4657 12248 4652 12289 4662 12305 4675 12295
      4668 12286 4676 12264

$$

WAC045-231430-
/O.EXT.KSEW.FL.W.0027.000000T0000Z-210223T2156Z/
/SRPW1.1.ER.210222T1453Z.210223T0345Z.210223T1256Z.NO/
829 PM PST Mon Feb 22 2021

...The Flood Warning is now in effect until early tomorrow 
afternoon...

The Flood Warning continues for
  the Skokomish River At Potlatch.
* Until Tuesday afternoon.
* At 8:00 PM PST Monday the stage was 16.7 feet.
* Flood stage is 16.5 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 8:00 PM PST Monday was 16.7 feet.
* Forecast...The river is expected to fall below flood stage late 
  tonight and continue falling to 15.5 feet early Wednesday morning.
* Impact...At 16.5 feet, the Skokomish River will cause widespread 
  flooding of pasture lands, with water flowing quickly over West 
  Bourgault Road and Skokomish Valley Road.


&&

LAT...LON 4744 12326 4733 12321 4736 12317 4733 12308
      4721 12321 4738 12340

$$

WAC053-231430-
/O.EXT.KSEW.FL.W.0031.210223T0543Z-210223T1513Z/
/SPEW1.1.ER.210223T0543Z.210223T0600Z.210223T0613Z.NO/
829 PM PST Mon Feb 22 2021

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

The Flood Warning continues for
  the South Prairie Creek at South Prairie.
* Until Tuesday morning.
* At 6:45 PM PST Monday the flow was 3650.0 cfs.
* Flood flow is 4000.0 cfs.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this evening to a crest of 4032.2 cfs late this evening, then fall 
  below flood stage late tonight.
* Impact...At 4000.0 cfs, South Prairie Creek will flood low lying 
  areas and roads from the Town of South Prairie downstream to the 
  Carbon River near Orting.


&&

LAT...LON 4708 12205 4707 12207 4706 12208 4706 12210
      4708 12209 4709 12205

$$

WAC033-231430-
/O.EXT.KSEW.FL.W.0029.210223T0746Z-210224T0751Z/
/CRNW1.1.ER.210223T0746Z.210223T1200Z.210223T1951Z.NO/
829 PM PST Mon Feb 22 2021

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

The Flood Warning continues for
  the Snoqualmie River Near Carnation.
* From this evening to Tuesday evening.
* At 7:15 PM PST Monday the stage was 52.1 feet.
* Flood stage is 54.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 55.0 feet. It will then fall below flood 
  stage early Tuesday.
* Impact...At 54.0 feet, the Snoqualmie River will flood much of the 
  farm land and several roads from Fall City downstream through 
  Carnation and Duvall.


&&

LAT...LON 4756 12196 4770 12204 4784 12202 4783 12194
      4771 12193 4761 12188

$$

Cullen

179 
WGUS86 KSEW 230725
FLSSEW

Flood Statement
National Weather Service Seattle WA
1125 PM PST Mon Feb 22 2021

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

  Snoqualmie River Near Carnation affecting King County.

.The river will continue to rise through early Tuesday morning, 
cresting below flood stage before falling once again.

WAC033-230830-
/O.CAN.KSEW.FL.W.0029.210223T0746Z-210223T0725Z/
/CRNW1.1.ER.210223T0746Z.210223T1200Z.210223T1951Z.NO/
1125 PM PST Mon Feb 22 2021

...The Flood Warning for the Snoqualmie River Near Carnation has 
been cancelled...

The Flood Warning is cancelled for
  the Snoqualmie River Near Carnation.
* At 10:15 PM PST Monday the stage was 52.7 feet.
* Forecast...The river is expected to rise to 53.5 feet early 
  Tuesday morning, cresting below flood stage before falling below 
  action stage Tuesday evening.


&&

LAT...LON 4756 12196 4770 12204 4784 12202 4783 12194
      4771 12193 4761 12188

$$

Pullin

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 21, 8:57 PM PST	Wind Advisory	SEW		5 hr
Feb 22, 12:23 AM PST	River Flood Warning	SEW	Mason	33 hr
Feb 22, 2:28 AM PST	Gale Warning	SEW		44 hr
Feb 22, 2:28 AM PST	Small Craft Advisory	SEW		44 hr
Feb 22, 4:13 AM PST	Winter Weather Advisory	SEW		36 hr
Feb 22, 8:57 AM PST	Flood Watch	SEW	King, Lewis, Thurston	17 hr
Feb 22, 11:45 AM PST	River Flood Warning	SEW	King	7 hr
Feb 22, 2:56 PM PST	Wind Advisory	SEW		11 hr
Feb 22, 3:05 PM PST	River Flood Warning	SEW	Lewis	21 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.