Alert archive / Washington / River Flood Warnings in 2021
River Flood Warning 53, NWS Seattle, WA
NWS Seattle, WA issued this river flood warning at Nov 11, 2021, 3:56 PM PST for King County, Washington. It took effect at Nov 11, 2021, 11:35 PM PST. It was in force for 31 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 11, 2021, 3:56 PM PST (23:56 UTC)
- In effect from
- Nov 11, 2021, 11:35 PM PST
- Expired
- Nov 13, 2021, 6:23 AM PST
- In force
- 31 hr
- Issued by
- NWS Seattle, WA
- Area
- Storm-based polygon
- Flood severity
- Major
County King County, WA
The radar
The Seattle radar (KATX), 75 km from the middle of the area, began a volume at 23:53 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 Tolt River near Carnation (TOLW1). The gauge peaked at 9.21 ft at Nov 12, 2021, 8:00 AM 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.
The text
As transmitted.
112
WGUS46 KSEW 112356
FLWSEW
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Seattle WA
356 PM PST Thu Nov 11 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.
.Heavy rain over the central Washington Cascades Thursday afternoon
through Friday afternoon, forecasted amounts 3 to 5 inches, will
push the Tolt river above Carnation over flood stage tonight. The
river will remain above flood stage for most of the day Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight at 1200 AM PST.
&&
WAC033-120800-
/O.NEW.KSEW.FL.W.0053.211112T0735Z-211113T1423Z/
/TOLW1.3.ER.211112T0735Z.211112T1800Z.211113T0522Z.NO/
356 PM PST Thu Nov 11 2021
...FLOOD WARNING IN EFFECT FROM THIS EVENING THROUGH SATURDAY
MORNING...
* WHAT...Major flooding is forecast.
* WHERE...Tolt River Above Carnation.
* WHEN...From this evening to Saturday morning.
* IMPACTS...At 8500.0 cfs, the Tolt River will cause major flooding.
Deep and quick flood waters will cover roads and driveways...
cutting off access to many homes. Levees may overtop and channel
changes may occur. Flooding will occur all along the river
including headwaters...tributaries...and other streams within and
near the Tolt River Basin. This river level on the Tolt
corresponds to a phase 4 flood in the King County flood system.
* ADDITIONAL DETAILS...
- At 3:15 PM PST Thursday the flow was 1070.0 cfs.
- Forecast...The river is expected to rise above flood stage
late this evening to a crest around 9750 cfs late tomorrow
morning. It will then fall below flood stage late tomorrow
evening.
- Flood flow is 5000.0 cfs.
- Flood History...This crest compares to a previous crest of
9740.0 cfs on 02/01/2020.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
4771 12189 4774 12184
$$
444 follow-up statements
013
WGUS86 KSEW 120730
FLSSEW
Flood Statement
National Weather Service Seattle WA
1130 PM PST Thu Nov 11 2021
...The Flood Warning continues for the following rivers in
Washington...
Tolt River Above Carnation affecting King County.
.Heavy rain over the central Washington Cascades through Friday
afternoon, with forecasted amounts of an additional 1 to 2 inches,
will push the Tolt river above Carnation over flood stage tonight.
The river will remain above flood stage for most of the day Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 Friday morning at 730 AM PST.
&&
WAC033-121530-
/O.CON.KSEW.FL.W.0053.211112T0735Z-211113T1423Z/
/TOLW1.3.ER.211112T0735Z.211112T1800Z.211113T0522Z.NO/
1130 PM PST Thu Nov 11 2021
...FLOOD WARNING REMAINS IN EFFECT FROM THIS EVENING THROUGH
SATURDAY MORNING...
* WHAT...Major flooding is forecast.
* WHERE...Tolt River Above Carnation.
* WHEN...Until Saturday morning.
* IMPACTS...At 8500.0 cfs, the Tolt River will cause major flooding.
Deep and quick flood waters will cover roads and driveways...
cutting off access to many homes. Levees may overtop and channel
changes may occur. Flooding will occur all along the river
including headwaters...tributaries...and other streams within and
near the Tolt River Basin. This river level on the Tolt
corresponds to a phase 4 flood in the King County flood system.
* ADDITIONAL DETAILS...
- At 3:15 PM PST Thursday the flow was 1070.0 cfs.
- Forecast...The river is expected to rise above flood stage
late this evening to a crest of 9742.3 cfs late tomorrow
morning. It will then fall below flood stage late tomorrow
evening.
- Flood flow is 5000.0 cfs.
- Flood History...This crest compares to a previous crest of
9740.0 cfs on 02/01/2020.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
4771 12189 4774 12184
$$
CK599
WGUS86 KSEW 121501
FLSSEW
Flood Statement
National Weather Service Seattle WA
701 AM PST Fri Nov 12 2021
...The Flood Warning is extended for the following rivers in
Washington...
Snoqualmie River Near Snoqualmie Falls affecting King County.
Puyallup River Near Orting affecting Pierce County.
Nisqually River Near National affecting Lewis and Pierce Counties.
...The Flood Warning continues for the following rivers in
Washington...
Skokomish River At Potlatch affecting Mason County.
Tolt River Above Carnation affecting King County.
.Heavy rain has led to river rises across western Washington.
Additional rainfall is expected through much of today, gradually
tapering off this evening.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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 300 PM PST.
&&
WAC033-122315-
/O.EXT.KSEW.FL.W.0055.000000T0000Z-211113T1939Z/
/SQUW1.2.ER.211112T1520Z.211113T0000Z.211113T1039Z.NO/
701 AM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH SATURDAY
MORNING...
* WHAT...Moderate flooding is forecast.
* WHERE...Snoqualmie River Near Snoqualmie Falls.
* WHEN...Until late tomorrow morning.
* IMPACTS...At 30000.0 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.
* ADDITIONAL DETAILS...
- At 5:30 AM PST Friday the flow was 15900.0 cfs.
- Forecast...The river will rise above flood stage this morning
to 40661.3 cfs late this afternoon. It will then fall below
flood stage just after midnight tonight to 7742.8 cfs and
begin rising again late tomorrow evening. It will rise to
16862.8 cfs Sunday afternoon. It will then fall again and
remain below flood stage.
- Flood flow is 20000.0 cfs.
- Flood History...This crest compares to a previous crest of
40600.0 cfs on 01/25/1984.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4742 12175 4752 12186 4756 12196 4761 12188
4758 12178 4756 12170
$$
WAC053-122315-
/O.EXT.KSEW.FL.W.0054.000000T0000Z-211113T1207Z/
/ORTW1.3.ER.211112T0625Z.211112T1800Z.211113T0307Z.NO/
701 AM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH LATE
TONIGHT...
* WHAT...Minor flooding is occurring and major flooding is forecast.
* WHERE...Puyallup River Near Orting.
* WHEN...Until late tonight.
* IMPACTS...At 16000.0 cfs, the Puyallup River will cause major
flooding from Orting downstream through McMillan to Sumner. Swift
and deep flood waters will inundate roads...residential areas...
and farms. Erosion will likely damage levees. Flooding will occur
all along the river including headwaters...tributaries...and other
streams within and near the Puyallup River Basin.
* ADDITIONAL DETAILS...
- At 6:15 AM PST Friday the flow was 10900.0 cfs.
- Recent Activity...The maximum river flow in the 24 hours
ending at 6:15 AM PST Friday was 11200.0 cfs.
- Forecast...The river will rise to 16207.0 cfs late this
morning. It will then fall below flood stage this evening to
2737.5 cfs and begin rising again late tomorrow evening. It
will rise to 3576.6 cfs late Sunday morning. It will then
fall again and remain below flood stage.
- Flood flow is 10000.0 cfs.
- Flood History...This crest compares to a previous crest of
15300.0 cfs on 11/20/1962.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4692 12227 4705 12228 4712 12233 4724 12219
4715 12214 4700 12207
$$
WAC033-122315-
/O.EXT.KSEW.FL.W.0053.000000T0000Z-211113T1235Z/
/TOLW1.2.ER.211112T1447Z.211112T1800Z.211113T0335Z.NO/
701 AM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH LATE
TONIGHT...
* WHAT...Moderate flooding is forecast.
* WHERE...Tolt River Above Carnation.
* WHEN...Until late tonight.
* IMPACTS...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.
* ADDITIONAL DETAILS...
- At 6:15 AM PST Friday the flow was 4640.0 cfs.
- Forecast...The river will rise above flood stage this morning
to 7117.0 cfs late this morning. It will then fall below
flood stage this evening to 990.7 cfs and begin rising again
late tomorrow evening. It will rise to 2399.1 cfs Sunday
afternoon. It will then fall to 2236.4 cfs and begin rising
again late Sunday evening. It will then rise again but remain
below flood stage.
- Flood flow is 5000.0 cfs.
- Flood History...This crest compares to a previous crest of
7100.0 cfs on 11/09/1990.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
4771 12189 4774 12184
$$
WAC041-053-122315-
/O.EXT.KSEW.FL.W.0052.000000T0000Z-211114T0141Z/
/NISW1.3.ER.211112T0541Z.211112T1800Z.211113T1641Z.NO/
701 AM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH SATURDAY
AFTERNOON...
* WHAT...Moderate flooding is occurring and major flooding is
forecast.
* WHERE...Nisqually River Near National.
* WHEN...Until tomorrow afternoon.
* IMPACTS...At 15000.0 cfs, the Nisqually River will cause major
flooding along the upper reaches of the river from Mt Rainier
National Park downstream to Alder Lake. Deep and swift flood
waters will inundate roads...pasture lands...and farms. The river
will likely overtop some levees. Flooding will occur all along
the river including headwaters...tributaries...and other streams
within and near the Nisqually River Basin.
* ADDITIONAL DETAILS...
- At 6:00 AM PST Friday the flow was 10800.0 cfs.
- Recent Activity...The maximum river flow in the 24 hours
ending at 6:00 AM PST Friday was 11200.0 cfs.
- Forecast...The river will rise to 15399.3 cfs late this
morning. It will then fall below flood stage tomorrow morning
to 4054.6 cfs and begin rising again early Sunday morning. It
will rise to 4442.9 cfs late Sunday morning. It will then
fall again and remain below flood stage.
- Flood flow is 8000.0 cfs.
- Flood History...This crest compares to a previous crest of
15000.0 cfs on 01/15/1974.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4674 12165 4664 12189 4670 12227 4683 12213
4681 12198 4683 12187
$$
WAC045-122315-
/O.EXT.KSEW.FL.W.0051.000000T0000Z-211113T2322Z/
/SRPW1.2.ER.211112T0152Z.211112T1800Z.211113T1421Z.NO/
701 AM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS MORNING THROUGH SATURDAY
AFTERNOON...
* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.
* WHERE...Skokomish River At Potlatch.
* WHEN...Until tomorrow afternoon.
* IMPACTS...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.
* ADDITIONAL DETAILS...
- At 6:30 AM PST Friday the stage was 17.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 6:30 AM PST Friday was 17.5 feet.
- Forecast...The river is expected to fall below flood stage
tomorrow morning and continue falling to 16.2 feet tomorrow
afternoon.
- Flood stage is 16.5 feet.
- Flood History...This crest compares to a previous crest of
17.8 feet on 03/19/1997.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4744 12326 4733 12321 4736 12317 4733 12308
4721 12321 4738 12340
$$
Wolcott039
WGUS86 KSEW 122301
FLSSEW
Flood Statement
National Weather Service Seattle WA
301 PM PST Fri Nov 12 2021
...The Flood Warning continues for the following rivers in
Washington...
Tolt River Above Carnation affecting King County.
.The flow will remain near minor flood flow for the Tolt River above
Carnation this evening.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
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 1100 PM PST.
&&
WAC033-130715-
/O.EXT.KSEW.FL.W.0053.000000T0000Z-211113T0958Z/
/TOLW1.1.ER.211112T1447Z.211113T0000Z.211113T0058Z.NO/
301 PM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS AFTERNOON THROUGH LATE
TONIGHT...
* WHAT...Minor flooding is forecast.
* WHERE...Tolt River Above Carnation.
* WHEN...Until just after midnight tonight.
* IMPACTS...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.
* ADDITIONAL DETAILS...
- At 2:15 PM PST Friday the flow was 4510.0 cfs.
- Forecast...The river will rise above flood stage late this
afternoon to 5288.2 cfs late this afternoon. It will then
fall below flood stage late this afternoon to 1106.9 cfs and
begin rising again late tomorrow evening. It will rise to
2559.2 cfs late Sunday morning. It will then fall to 2447.4
cfs and begin rising again Sunday afternoon. It will then
rise again but remain below flood stage.
- Flood flow is 5000.0 cfs.
- Flood History...This crest compares to a previous crest of
5280.0 cfs on 11/01/1953.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
4771 12189 4774 12184
$$
33241
WGUS86 KSEW 130437
FLSSEW
Flood Statement
National Weather Service Seattle WA
837 PM PST Fri Nov 12 2021
...The Flood Warning is cancelled for the following rivers in
Washington...
Tolt River Above Carnation affecting King County.
...The Flood Warning continues for the following rivers in
Washington...
Snohomish River Near Monroe affecting Snohomish County.
Snohomish River At Snohomish affecting Snohomish County.
Snoqualmie River Near Carnation affecting King County.
.Heavy rain is over allowing some rivers to fall while larger rivers
are still rising.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
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 945 PM PST.
&&
WAC033-130545-
/O.CAN.KSEW.FL.W.0053.000000T0000Z-211113T0437Z/
/TOLW1.1.ER.211112T1447Z.211116T0000Z.000000T0000Z.NO/
837 PM PST Fri Nov 12 2021
...FLOOD WARNING IS CANCELLED THIS EVENING...
The Flood Warning is cancelled for
the Tolt River Above Carnation.
* ADDITIONAL DETAILS...
- At 2:15 PM PST Friday the flow was 4510.0 cfs.
- Forecast...The river crested near flood stage and will
continue to fall.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4768 12176 4761 12185 4761 12194 4767 12196
4771 12189 4774 12184
$$
WAC061-131245-
/O.EXT.KSEW.FL.W.0067.000000T0000Z-211113T2326Z/
/MROW1.1.ER.211113T0419Z.211113T1200Z.211113T1451Z.NO/
837 PM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH SATURDAY
AFTERNOON...
* WHAT...Minor flooding is forecast.
* WHERE...Snohomish River Near Monroe.
* WHEN...Until tomorrow afternoon.
* IMPACTS...At 15.0 feet, the Snohomish River will cause minor
flooding of low pasture lands and several roads near the river. A
stage of 15 feet at this location corresponds to Phase 2 in the
Snohomish County Flood Warning System.
* ADDITIONAL DETAILS...
- At 7:15 PM PST Friday the stage was 14.6 feet.
- Forecast...The river will rise above flood stage this evening
to 15.9 feet late tonight. It will then fall below flood
stage tomorrow morning and begin rising again early Sunday
morning.
- Flood stage is 15.0 feet.
- Flood History...This crest compares to a previous crest of
15.7 feet on 03/25/2007.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4780 12190 4779 12212 4786 12217 4791 12203
4793 12202 4793 12190
$$
WAC061-131245-
/O.EXT.KSEW.FL.W.0066.000000T0000Z-211114T0905Z/
/SNAW1.2.ER.211113T0420Z.211113T1210Z.211114T0019Z.NO/
837 PM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH LATE
SATURDAY NIGHT...
* WHAT...Moderate flooding is forecast.
* WHERE...Snohomish River At Snohomish.
* WHEN...Until early Sunday morning.
* IMPACTS...At 27.0 feet, the Snohomish River will flood several
roads...including the Snohomish-Monroe highway...and low areas of
the lower Snohomish valley that are not protected by levees. A
stage of 27 feet on the Snohomish River corresponds roughly to a
Phase 2 in the Snohomish County flood program.
* ADDITIONAL DETAILS...
- At 7:00 PM PST Friday the stage was 24.4 feet.
- Forecast...The river will rise above flood stage this evening
to 27.1 feet late tonight. It will then fall below flood
stage tomorrow evening to 23.0 feet and begin rising again
late Sunday morning.
- Flood stage is 25.0 feet.
- Flood History...This crest compares to a previous crest of
27.3 feet on 12/16/1999.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4786 12217 4789 12221 4796 12232 4809 12216
4794 12213 4791 12203
$$
WAC033-131245-
/O.EXT.KSEW.FL.W.0063.000000T0000Z-211114T0729Z/
/CRNW1.2.ER.211112T2202Z.211113T1200Z.211113T2210Z.NO/
837 PM PST Fri Nov 12 2021
...FLOOD WARNING NOW IN EFFECT FROM THIS EVENING THROUGH SATURDAY
EVENING...
* WHAT...Minor flooding is occurring and moderate flooding is
forecast.
* WHERE...Snoqualmie River Near Carnation.
* WHEN...Until late tomorrow evening.
* IMPACTS...At 56.0 feet, the Snoqualmie River will cause widespread
flooding from Fall City downstream through Carnation and Duvall...
inundating much of the farm land and numerous roads.
* ADDITIONAL DETAILS...
- At 8:00 PM PST Friday the stage was 55.2 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:00 PM PST Friday was 55.2 feet.
- Forecast...The river is expected to rise to a crest of 57.2
feet late tonight. The river will then fall below flood stage
tomorrow afternoon. Additional rises are expected.
- Flood stage is 54.0 feet.
- Flood History...This crest compares to a previous crest of
57.1 feet on 02/22/2012.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4756 12196 4770 12204 4784 12202 4783 12194
4771 12193 4761 12188
$$
JBBThe office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 11, 2:40 AM PST | Small Craft Advisory | SEW | 25 hr | |
| Nov 11, 1:59 PM PST | River Flood Warning | SEW | Mason | 6 days |
| Nov 11, 3:51 PM PST | River Flood Warning | SEW | Lewis, Pierce | 37 hr |
Nearby
River Flood Warnings in Washington, 2021Every 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.