Alert archive / Washington / River Flood Warnings in 2021

River Flood Warning 9, NWS Seattle, WA

January 12, 2021Grays Harbor County, Washington

NWS Seattle, WA issued this river flood warning at Jan 12, 2021, 10:01 AM PST for Grays Harbor County, Washington. It took effect at Jan 12, 2021, 1:38 PM PST. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jan 12, 2021, 10:01 AM PST (18:01 UTC)
In effect from: Jan 12, 2021, 1:38 PM PST
Expired: Jan 12, 2021, 10:39 PM PST
In force: 9 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County Grays Harbor County, WA

The radar

The Langley Hill radar (KLGX), 48 km from the middle of the area, began a volume at 18:02 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 Satsop River near Satsop (SATW1). The gauge peaked at 39.57 ft at Jan 12, 2021, 8:00 PM PST.

Action stage: 36 ft
Minor stage: 38 ft
Moderate stage: 40 ft
Major stage: 42 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12035000, 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.

704 
WGUS46 KSEW 121801
FLWSEW

BULLETIN - EAS ACTIVATION REQUESTED
Flood Warning
National Weather Service Seattle WA
1001 AM PST Tue Jan 12 2021

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

  Satsop River Near Satsop affecting Grays Harbor County.

.Heavy rains will push the Satsop River above flood stage this 
afternoon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 this evening at 600 PM PST.

&&


WAC027-130215-
/O.NEW.KSEW.FL.W.0009.210112T2138Z-210113T0639Z/
/SATW1.1.ER.210112T2138Z.210113T0000Z.210113T0338Z.NO/
1001 AM PST Tue Jan 12 2021

The National Weather Service in Seattle has issued a

* Flood Warning for
  the Satsop River Near Satsop.
* From this afternoon to this evening.
* At 9:15 AM PST Tuesday the stage was 36.9 feet.
* Flood stage is 38.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  afternoon to a crest of 38.6 feet late this afternoon. It will 
  then fall below flood stage this evening.
* Impact...At 38.0 feet, the Satsop River will flood low pasture 
  lands and some roads along the river.


&&

LAT...LON 4696 12345 4696 12354 4702 12354 4708 12354
      4708 12345 4702 12345

$$

16

2 follow-up statements

616 
WGUS86 KSEW 130113
FLSSEW

Flood Statement
National Weather Service Seattle WA
513 PM PST Tue Jan 12 2021

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

  Skokomish River At Potlatch affecting Mason County.

  Snoqualmie River Near Snoqualmie Falls affecting King County.

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

  Satsop River Near Satsop affecting Grays Harbor County.

  Tolt River Above Carnation affecting King County.

  Snoqualmie River Near Carnation affecting King County.

  Chehalis River Above Grand Mound affecting Grays Harbor and 
  Thurston Counties.

  Chehalis River At Porter affecting Grays Harbor County.

.Rainfall will increase in intensity tonight into Wednesday morning, 
which will continue to drive rivers higher and renew rises on some.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

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

Additional information is available at www.weather.gov.

The next statement will be issued by this evening at 1045 PM PST.

&&


WAC045-130915-
/O.EXT.KSEW.FL.W.0008.000000T0000Z-000000T0000Z/
/SRPW1.2.ER.210112T0500Z.210112T2015Z.000000T0000Z.NR/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Skokomish River At Potlatch.
* Until further notice.
* At 4:45 PM PST Tuesday the stage was 17.8 feet.
* Flood stage is 16.5 feet.
* Moderate flooding is occurring and moderate flooding is forecast. 
  This approaches the flood of record.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 4:45 PM PST Tuesday was 17.8 feet.
* Forecast...The river is cresting now and will fall to 17.1 feet 
  Friday afternoon.
* Impact...At 17.5 feet, the Skokomish River will cause moderate 
  flooding, with deep and quick flood waters inundating some 
  residential areas, many roads, and much of the farm land in the 
  Skokomish Valley. Inundated roads include the Skokomish Valley 
  road, Bourgault Road West, Purdy Cutoff Road, and Highway 106.


&&

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

$$

WAC033-130915-
/O.EXT.KSEW.FL.W.0011.210113T0414Z-210114T0505Z/
/SQUW1.1.ER.210113T0414Z.210113T1200Z.210113T2004Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Snoqualmie River Near Snoqualmie Falls.
* From this evening to Wednesday evening.
* At 3:30 PM PST Tuesday the flow was 13100.0 cfs.
* Flood flow is 20000.0 cfs.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  evening to a crest of 27000 cfs late tonight. It will then fall 
  below flood stage early tomorrow afternoon.
* Impact...At 20000.0 cfs, the Snoqualmie River will cause 
  widespread flooding of pasture lands and roads along the river 
  from the town of Snoqualmie downstream through Fall City. Roads 
  that may become flooded include Fall City-Carnation...Tolt Hill...
  and Novelty Flats Roads. This river level on the Snoqualmie 
  corresponds roughly to a phase 3 flood in the King County flood 
  system.


&&

LAT...LON 4742 12175 4752 12186 4756 12196 4761 12188
      4758 12178 4756 12170

$$

WAC033-130915-
/O.CON.KSEW.FL.W.0010.000000T0000Z-210114T0753Z/
/TOLW1.1.ER.210113T0307Z.210113T1800Z.210113T2252Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Tolt River Above Carnation.
* Until Wednesday evening.
* At 4:15 PM PST Tuesday the flow was 4140.0 cfs.
* Flood flow is 5000.0 cfs.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage this 
  evening to a crest of 6760 cfs late tomorrow morning. It will then 
  fall below flood stage early tomorrow afternoon.
* 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

$$

WAC027-130645-
/O.CON.KSEW.FL.W.0009.000000T0000Z-210113T0639Z/
/SATW1.1.ER.210112T1951Z.210113T0600Z.210113T2005Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Satsop River Near Satsop.
* Until this evening.
* At 4:15 PM PST Tuesday the stage was 39.4 feet.
* Flood stage is 38.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 4:15 PM PST Tuesday was 39.4 feet.
* Forecast...The river will crest soon around 39.6 feet and then is 
  expected to fall below flood stage early tomorrow afternoon and 
  continue falling to 32.4 feet Friday afternoon.
* Impact...At 40.0 feet, the Satsop River will flood...inundating 
  farms...roads...and some residential areas. Erosion will likely 
  damage some areas along the river.


&&

LAT...LON 4696 12345 4696 12354 4702 12354 4708 12354
      4708 12345 4702 12345

$$

WAC033-130915-
/O.CON.KSEW.FL.W.0012.210113T0907Z-210115T0632Z/
/CRNW1.2.ER.210113T0907Z.210114T0600Z.210114T1831Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Snoqualmie River Near Carnation.
* From late tonight to Thursday evening.
* At 4:15 PM PST Tuesday the stage was 51.2 feet.
* Flood stage is 54.0 feet.
* Moderate flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 57.7 feet late tomorrow 
  evening. It will then fall below flood stage late Thursday morning.
* Impact...At 56.0 feet, the Snoqualmie River will cause widespread 
  flooding from Fall City downstream through Carnation and Duvall...
  inundating much of the farm land and numerous roads.


&&

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

$$

WAC027-067-130915-
/O.CON.KSEW.FL.W.0013.210113T0938Z-210115T0701Z/
/CGMW1.1.ER.210113T0938Z.210114T0600Z.210114T2200Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Chehalis River Above Grand Mound.
* From late tonight to Thursday evening.
* At 4:00 PM PST Tuesday the stage was 138.9 feet.
* Flood stage is 141.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 141.9 feet late tomorrow 
  evening. It will then fall below flood stage early Thursday 
  afternoon.
* Impact...At 141.0 feet, the Chehalis River in Thurston County will 
  flood several roads in Independence Valley including James Road, 
  Independence Road, and Moon road. Flood waters will also cover 
  nearby farm lands.


&&

LAT...LON 4672 12305 4677 12315 4682 12340 4693 12318
      4690 12304 4681 12289

$$

WAC027-130915-
/O.CON.KSEW.FL.W.0014.210113T1308Z-210116T1452Z/
/CRPW1.1.ER.210113T1308Z.210114T1800Z.210116T0551Z.NO/
513 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Chehalis River At Porter.
* From late tonight to Saturday morning.
* At 4:45 PM PST Tuesday the stage was 45.9 feet.
* Flood stage is 48.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  tonight to a crest of 49.4 feet late Thursday morning. It will 
  then fall below flood stage late Friday evening.
* Impact...At 49.0 feet, the Chehalis River in Grays Harbor will 
  flood pasture lands and many roads...including SR 12 between 
  Oakville and Rochester. High tidal levels at Aberdeen will worsen 
  flooding along the lower reaches.


&&

LAT...LON 4682 12340 4689 12347 4689 12362 4706 12360
      4707 12333 4693 12318

$$

JBB

636 
WGUS86 KSEW 130550
FLSSEW

Flood Statement
National Weather Service Seattle WA
950 PM PST Tue Jan 12 2021

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

  Satsop River Near Satsop affecting Grays Harbor County.

.Rainfall will continue into Wednesday morning before the river 
begins to recede.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Additional information is available at www.weather.gov.

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

&&


WAC027-130700-
/O.CON.KSEW.FL.W.0009.000000T0000Z-210113T0639Z/
/SATW1.1.ER.210112T1951Z.210113T0600Z.210113T2005Z.NO/
950 PM PST Tue Jan 12 2021

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

The Flood Warning continues for
  the Satsop River Near Satsop.
* Until this evening.
* At 4:15 PM PST Tuesday the stage was 39.4 feet.
* Flood stage is 38.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 4:15 PM PST Tuesday was 39.4 feet.
* Forecast...The river is expected to fall below flood stage early 
  tomorrow afternoon and continue falling to 32.4 feet Friday 
  afternoon.
* Impact...At 38.0 feet, the Satsop River will flood low pasture 
  lands and some roads along the river.


&&

LAT...LON 4696 12345 4696 12354 4702 12354 4708 12354
      4708 12345 4702 12345

$$

CC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 12, 2:03 AM PST	Small Craft Advisory	SEW		7 hr
Jan 12, 8:02 AM PST	Areal Flood Advisory	SEW	Grays Harbor, Island, Jefferson, King, Kitsap, Lewis and 4 more	7 hr
Jan 12, 8:39 AM PST	Gale Watch	SEW		6 hr
Jan 12, 8:39 AM PST	Small Craft Advisory	SEW		15 hr
Jan 12, 1:42 PM PST	River Flood Warning	SEW	King	34 hr
Jan 12, 1:42 PM PST	River Flood Warning	SEW	King	31 hr
Jan 12, 1:42 PM PST	River Flood Warning	SEW	King	42 hr
Jan 12, 1:59 PM PST	River Flood Warning	SEW	Grays Harbor, Thurston	3 days
Jan 12, 1:59 PM PST	River Flood Warning	SEW	Grays Harbor	4 days
Jan 12, 2:03 PM PST	Coastal Flood Advisory	SEW	San Juan	20 hr
Jan 12, 2:35 PM PST	Gale Warning	SEW		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.