Alert archive / Washington / River Flood Warnings in 2017

River Flood Warning 64, NWS Seattle, WA

November 23, 2017Snohomish County, Washington

NWS Seattle, WA issued this river flood warning at Nov 23, 2017, 3:46 AM PST for Snohomish County, Washington. It took effect at Nov 23, 2017, 6:27 AM PST. It was in force for 16 hr.

The area

The outline as issued.

The facts

Issued: Nov 23, 2017, 3:46 AM PST (11:46 UTC)
In effect from: Nov 23, 2017, 6:27 AM PST
Expired: Nov 23, 2017, 10:46 PM PST
In force: 16 hr
Issued by: NWS Seattle, WA
Area: Storm-based polygon
Flood severity: Minor

County Snohomish County, WA

The radar

The Seattle radar (KATX), 37 km from the middle of the area, began a volume at 11:47 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 South Fork Stillaguamish River near Granite Falls (GFLW1). The gauge peaked at 16.79 ft at Nov 22, 2017, 4:00 AM PST.

Action stage: 12.9 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 12161000, 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.

573 
WGUS46 KSEW 231146
FLWSEW
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Seattle WA
346 AM PST Thu Nov 23 2017

...The National Weather Service in Seattle has issued a flood warning
for the following rivers in Washington...

  South Fork Nooksack River at Saxon Bridge affecting Whatcom County.
  North Fork Stillaguamish River near Arlington affecting Snohomish 
  County.
  South Fork Stillaguamish River near Granite Falls affecting 
  Snohomish County.
  Snoqualmie River near the Falls affecting King County.
  White River at R Street affecting King and Pierce Counties.
  Nisqually River near National affecting Lewis and Pierce Counties.

.Flood Bulletin No. 25


WAC073-232046-
/O.NEW.KSEW.FL.W.0062.171123T1146Z-171124T0357Z/
/NSSW1.1.ER.171123T1040Z.171123T1800Z.171123T1857Z.UU/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The South Fork Nooksack River at Saxon Bridge
* until this evening.
* At  3:00 AM Thursday the stage was 8.2 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to rise and crest near 8.2 feet 
  around 10 AM Thursday. The river will fall below flood stage midday today.
* Impact...At 8.0 feet, the Nooksack River floodwaters will inundate 
  much of the low farm lands along the river, with water over some 
  roadways, including potentially Highway 9 north of Acme.

&&

LAT...LON 4865 12219 4871 12226 4880 12224 4882 12215 4873 12215
      4865 12208       

$$

WAC073-232046-
/O.EXT.KSEW.FL.W.0060.171123T1530Z-171124T1215Z/
/NRKW1.1.ER.171123T1530Z.171123T1800Z.171124T0315Z.NO/
346 AM PST Thu Nov 23 2017

The Flood Warning continues for 
 The Nooksack River at North Cedarville
* Until late tonight.
* At  3:30 AM Thursday the stage was 145.6 feet.
* Flood stage is 146.5 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 7 AM 
  Thursday and crest near 147.3 feet around 10 AM Thursday. The river
  will fall below flood stage this evening.
* Impact...At 147.3 feet, the Nooksack River cause widespread flooding
  of low farm lands along the river downstream through Lynden...with 
  swift water moving over several roads.

&&

LAT...LON 4880 12224 4885 12236 4889 12247 4896 12247 4895 12233
      4882 12215       

$$

WAC073-232045-
/O.EXT.KSEW.FL.W.0061.171123T2322Z-171125T0846Z/
/NKSW1.1.ER.171123T2322Z.171124T1200Z.171124T2346Z.NO/
346 AM PST Thu Nov 23 2017

The Flood Warning continues for 
 The Nooksack River at Ferndale
* Until late Friday night.
* At  3:30 AM Thursday the stage was 15.3 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 3 PM 
  Thursday and crest near 18.9 feet around 4 AM Friday. The river 
  will fall below flood stage Friday afternoon.
* Impact...At 18.0 feet, the river begins overtopping its banks within
  the City of Ferndale flooding low-lying areas within the City and 
  low pasture lands along the river from near Ferndale downstream to 
  the mouth.

&&

LAT...LON 4889 12247 4887 12253 4878 12254 4876 12263 4891 12262
      4896 12247       

$$

WAC061-232045-
/O.NEW.KSEW.FL.W.0063.171123T1800Z-171124T0300Z/
/ARGW1.1.ER.171123T1800Z.171123T1800Z.171123T1800Z.NO/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The North Fork Stillaguamish River near Arlington
* from this morning to this evening.
* At  3:15 AM Thursday the stage was 11.2 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise and crest near flood stage around 10
  AM Thursday then begin to fall.
* Impact...At 13.0 feet, the North Fork Stillaguamish River will cause
  flooding of Oso Loop Road and cause minor riverbank erosion. A 
  stage of 13 feet corresponds to Phase 2 in the Snohomish County 
  Flood Warning System.

&&

LAT...LON 4822 12164 4822 12191 4816 12211 4824 12214 4833 12193
      4833 12164       

$$

WAC061-232045-
/O.NEW.KSEW.FL.W.0064.171123T1449Z-171124T0646Z/
/GFLW1.1.ER.171123T1449Z.171123T1800Z.171123T2146Z.NO/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The South Fork Stillaguamish River near Granite Falls
* from this morning to this evening.
* At  3:15 AM Thursday the stage was 13.4 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 7 AM 
  Thursday and crest near 14.8 feet around 10 AM Thursday. The river 
  will fall below flood stage early this afternoon.
* Impact...At 14.0 feet, the South Fork Stillaguamish River will cause
  flooding along the river and tributaries. A stage of 14 feet 
  corresponds to Phase 2 in the Snohomish County Flood Warning 
  System.

&&

LAT...LON 4806 12191 4808 12204 4816 12211 4824 12214 4816 12202
      4815 12192       

$$

WAC061-232045-
/O.EXT.KSEW.FL.W.0048.000000T0000Z-171124T1439Z/
/ARLW1.3.ER.171122T0929Z.171122T1654Z.171124T0239Z.NO/
346 AM PST Thu Nov 23 2017

The Flood Warning continues for 
 The Stillaguamish River at Arlington
* Until Friday morning.
* At  3:24 AM Thursday the stage was 12.2 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 7 AM 
  Thursday and crest near 16.2 feet midday Thursday. The river 
  will fall below flood stage this afternoon.
* Impact...At 16.0 feet, the Stillaguamish River will cause minor 
  flooding mainly in the Silvana area, including over Pioneer 
  Highway and along Norman Rd. A stage of 16 feet on the 
  Stillaguamish River corresponds roughly to Phase 2 in the Snohomish
  County Flood program.

&&

LAT...LON 4816 12211 4817 12223 4816 12237 4826 12240 4823 12224
      4824 12214       

$$

WAC033-232045-
/O.NEW.KSEW.FL.W.0065.171123T1933Z-171124T1337Z/
/SQUW1.1.ER.171123T1933Z.171124T0000Z.171124T0437Z.NO/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The Snoqualmie River near the Falls
* from this morning to late tonight.
* At  3:15 AM Thursday the flow was 13000 cfs.
* Flood flow is 20000 cfs.
* Minor flooding is forecast.
* Forecast...The river will rise above flood flow around noon 
  Thursday and crest near 24000 cfs around 4 PM Thursday. The river 
  will fall below flood flow tonight.
* Impact...At 20000 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       

$$

WAC033-232045-
/O.EXT.KSEW.FL.W.0050.000000T0000Z-171125T0619Z/
/CRNW1.1.ER.171122T2040Z.171124T1200Z.171124T1819Z.NO/
346 AM PST Thu Nov 23 2017

The Flood Warning continues for 
 The Snoqualmie River near Carnation
* Until Friday evening.
* At  3:15 AM Thursday the stage was 53.8 feet.
* Flood stage is 54.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage late 
  Thursday and crest near 55.0 feet early Friday morning. The river 
  will fall below flood stage Friday 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       

$$

WAC033-053-232045-
/O.NEW.KSEW.FL.W.0066.171123T1425Z-000000T0000Z/
/WRAW1.1.ER.171123T1425Z.171126T0600Z.000000T0000Z.UU/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The White River at R Street
* until further notice.
* At  2:45 AM Thursday the flow was 5280 cfs.
* Flood flow is 5500 cfs.
* Minor flooding is forecast.
* Forecast...The river will rise above flood flow Thursday 
  morning and rise gradually to 6000 cfs through Saturday.
* Impact...At 5500 cfs, river flooding is likely to occur near low 
  bank areas around and downstream of the Stewart Street Bridge in 
  the City of Sumner. 

&&

LAT...LON 4721 12214 4724 12219 4719 12223 4724 12230 4732 12226
      4732 12214      

$$

WAC041-053-232045-
/O.NEW.KSEW.FL.W.0067.171123T2259Z-171124T0940Z/
/NISW1.1.ER.171123T2259Z.171124T0000Z.171124T0040Z.NO/
346 AM PST Thu Nov 23 2017

The National Weather Service in Seattle has issued a 

* Flood Warning for 
  The Nisqually River near National
* from this afternoon to late tonight.
* At  3:00 AM Thursday the flow was 5730 cfs.
* Flood flow is 8000 cfs.
* Minor flooding is forecast.
* Forecast...The river will rise above flood flow around 3 PM 
  Thursday and crest near 8000 cfs around 4 PM Thursday, then  
  fall slowly tonight.
* Impact...At 8000 cfs, the Nisqually River will flood roads and 
  pasture lands along the upper reaches of the river from Mt Rainier 
  National Park downstream to Alder Lake.

&&

LAT...LON 4674 12165 4664 12189 4670 12227 4683 12213 4681 12198
      4683 12187       

$$

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive cars...vans...or trucks through flooded areas. This is 
the cause of most flood related deaths in Washington. Be alert for 
rapid changes and monitor developments by listening to NOAA Weather 
radio or other local media.

&&

2 follow-up statements

643 
WGUS86 KSEW 231246
FLSSEW
Flood Statement
National Weather Service Seattle WA
446 AM PST Thu Nov 23 2017

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

  Snoqualmie River near the Falls affecting King County.
  Snoqualmie River near Carnation affecting King County.
  Skykomish River near Gold Bar affecting Snohomish County.
  Snohomish River near Monroe affecting Snohomish County.
  Snohomish River at Snohomish affecting Snohomish County.
  North Fork Stillaguamish River near Arlington affecting Snohomish 
  County.
  South Fork Stillaguamish River near Granite Falls affecting 
  Snohomish County.
  Stillaguamish River at Arlington affecting Snohomish County.
  Skagit River near Concrete affecting Skagit County.
  Skagit River near Mount Vernon affecting Skagit County.
  Nooksack River at North Cedarville affecting Whatcom County.
  South Fork Nooksack River at Saxon Bridge affecting Whatcom County.
  Nooksack River at Ferndale affecting Whatcom County.

.Flood Bulletin No. 27

          West Slopes Cascades from Snoqualmie River northward

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive cars...vans...or trucks through flooded areas. This is 
the cause of most flood related deaths in Washington. Be alert for 
rapid changes and monitor developments by listening to NOAA Weather 
radio or other local media.

&&

WAC073-232146-
/O.CON.KSEW.FL.W.0062.000000T0000Z-171124T0357Z/
/NSSW1.1.ER.171123T1040Z.171123T1200Z.171123T1857Z.UU/
446 AM PST Thu Nov 23 2017

The Flood Warning continues for
  The South Fork Nooksack River at Saxon Bridge
* Until this evening.
* At  4:00 AM Thursday the stage was 8.4 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river crested will creast near 8.4 feet this 
  morning and fall below flood stage midday today.
* Impact...At 8.0 feet, the Nooksack River floodwaters will inundate 
  much of the low farm lands along the river, with water over some 
  roadways, including potentially Highway 9 north of Acme.

&&

LAT...LON 4865 12219 4871 12226 4880 12224 4882 12215 4873 12215
      4865 12208       

$$

WAC073-232146-
/O.EXT.KSEW.FL.W.0060.171123T1402Z-171124T1230Z/
/NRKW1.1.ER.171123T1402Z.171123T1800Z.171124T0330Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until late tonight...

The Flood Warning continues for
  The Nooksack River at North Cedarville
* From 6 AM Thursday until late tonight.
* At  4:15 AM Thursday the stage was 146.1 feet.
* Flood stage is 146.5 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 6 AM 
  Thursday and crest near 147.4 feet around 10 AM Thursday. The river
  will fall below flood stage this evening.
* Impact...At 147.3 feet, the Nooksack River cause widespread flooding
  of low farm lands along the river downstream through Lynden, with 
  swift water moving over several roads.

&&

LAT...LON 4880 12224 4885 12236 4889 12247 4896 12247 4895 12233
      4882 12215       

$$

WAC073-232146-
/O.CON.KSEW.FL.W.0061.171123T2322Z-171125T0846Z/
/NKSW1.1.ER.171123T2322Z.171124T1200Z.171124T2346Z.NO/
446 AM PST Thu Nov 23 2017

The Flood Warning continues for
  The Nooksack River at Ferndale
* From 3 PM Thursday until late Friday night.
* At  4:15 AM Thursday the stage was 15.2 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 3 PM 
  Thursday and crest near 18.9 feet around 4 AM Friday. The river 
  will fall below flood stage Friday afternoon.
* Impact...At 18.0 feet, the river begins overtopping its banks within
  the City of Ferndale flooding low-lying areas within the City and 
  low pasture lands along the river from near Ferndale downstream to 
  the mouth.

&&

LAT...LON 4889 12247 4887 12253 4878 12254 4876 12263 4891 12262
      4896 12247       

$$

WAC057-232146-
/O.EXT.KSEW.FL.W.0054.000000T0000Z-171125T0418Z/
/CONW1.3.ER.171122T1439Z.171124T0000Z.171124T1618Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Friday evening...

The Flood Warning continues for
  The Skagit River near Concrete
* Until Friday evening.
* At  4:15 AM Thursday the stage was 31.3 feet.
* Flood stage is 28.0 feet.
* Moderate flooding is occurring and Major flooding is forecast.
* Forecast...The river will continue to rise and crest near 34.3 feet
  around 4 PM Thursday. The river will fall below flood stage Friday 
  morning.
* Impact...At 32.5 feet, the Skagit River will cause flooding from 
  Rockport downstream through Sedro Woolley. Flood waters will 
  inundate low areas near the river, roads, and several residential
  areas mainly Cape Horn, Hamilton and Thunderbird. Some water will 
  flow onto Cockreham Island and into the Nookachamps and Sterling 
  areas. Flooding will also occur in headwaters, tributaries, and 
  other streams within the Skagit Basin. This level for this location
  corresponds to a Phase 2 flood in the Skagit County flood system.

&&

LAT...LON 4845 12163 4848 12185 4846 12227 4853 12227 4856 12185
      4850 12160       

$$

WAC057-232146-
/O.EXT.KSEW.FL.W.0055.000000T0000Z-171125T1955Z/
/MVEW1.2.ER.171123T0340Z.171124T1800Z.171125T0755Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Saturday morning...

The Flood Warning continues for
  The Skagit River near Mount Vernon
* Until Saturday morning.
* At  4:15 AM Thursday the stage was 29.2 feet.
* Flood stage is 28.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue to rise and crest near 31.7 feet
  around 10 AM Friday. The river will fall below flood stage Friday 
  night.
* Impact...At 30.0 feet, the Skagit River will flood from Sedro 
  Woolley downstream through Mount Vernon to the mouth. Flood waters 
  will inundate some low-lying roads, farmlands and residential 
  areas. This level for this location on the Skagit corresponds to a 
  phase 1 flood in the Skagit County flood system.

&&

LAT...LON 4846 12227 4840 12230 4830 12235 4837 12250 4845 12240
      4853 12227       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0063.171123T1621Z-171124T0630Z/
/ARGW1.1.ER.171123T1621Z.171123T1800Z.171123T2130Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until this evening...

The Flood Warning continues for
  The North Fork Stillaguamish River near Arlington
* From 8 AM Thursday until this evening.
* At  4:15 AM Thursday the stage was 11.7 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 8 AM 
  Thursday and crest near 13.5 feet around 10 AM Thursday. The river 
  will fall below flood stage early this afternoon.
* Impact...At 13.0 feet, the North Fork Stillaguamish River will cause
  flooding of Oso Loop Road and cause minor riverbank erosion. A 
  stage of 13 feet corresponds to Phase 2 in the Snohomish County 
  Flood Warning System.

&&

LAT...LON 4822 12164 4822 12191 4816 12211 4824 12214 4833 12193
      4833 12164       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0064.171123T1427Z-171124T0654Z/
/GFLW1.1.ER.171123T1427Z.171123T1800Z.171123T2154Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until this evening...

The Flood Warning continues for
  The South Fork Stillaguamish River near Granite Falls
* From 6 AM Thursday until this evening.
* At  4:15 AM Thursday the stage was 13.4 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 6 AM 
  Thursday and crest near 14.9 feet around 10 AM Thursday. The river 
  will fall below flood stage early this afternoon.
* Impact...At 14.0 feet, the South Fork Stillaguamish River will cause
  flooding along the river and tributaries. A stage of 14 feet 
  corresponds to Phase 2 in the Snohomish County Flood Warning 
  System.

&&

LAT...LON 4806 12191 4808 12204 4816 12211 4824 12214 4816 12202
      4815 12192       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0048.000000T0000Z-171124T1435Z/
/ARLW1.3.ER.171122T0929Z.171122T1654Z.171124T0235Z.NO/
446 AM PST Thu Nov 23 2017

The Flood Warning continues for
  The Stillaguamish River at Arlington
* From 1 AM Wednesday until Friday morning.
* At  4:09 AM Thursday the stage was 13.0 feet.
* Flood stage is 14.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 5 AM 
  Thursday and crest near 17.0 feet around noon Thursday. The river 
  will fall below flood stage this afternoon.
* Impact...At 17.0 feet, the Stillaguamish River will cause flooding 
  mainly in the Silvana area, along Norman Road and in Florence. A 
  stage of 17 feet on the Stillaguamish River corresponds roughly to 
  Phase 3 in the Snohomish County Flood program.

&&

LAT...LON 4816 12211 4817 12223 4816 12237 4826 12240 4823 12224
      4824 12214       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0046.000000T0000Z-171124T1543Z/
/GLBW1.2.ER.171122T0744Z.171122T1045Z.171124T0343Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Friday morning...

The Flood Warning continues for
  The Skykomish River near Gold Bar
* Until Friday morning.
* At  3:30 AM Thursday the stage was 16.2 feet.
* Flood stage is 15.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will crest near 16.8 feet late this morning
  then fall to below flood stage this evening.
* Impact...At 16.0 feet, the Skykomish River will cause minor flooding
  of low pasture lands and some roads along the river, including Ben
  Howard Road, Index-Galena Road and Tualco Loop Road. A stage of 16 
  feet on the Skykomish River corresponds to a Phase 3 in the 
  Snohomish County flood program.

&&

LAT...LON 4774 12150 4780 12173 4780 12196 4793 12197 4794 12169
      4787 12147       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0056.000000T0000Z-171125T0103Z/
/MROW1.1.ER.171122T1950Z.171124T0600Z.171124T1303Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Friday afternoon...

The Flood Warning continues for
  The Snohomish River near Monroe
* From 12 PM Wednesday until Friday afternoon.
* At  4:15 AM Thursday the stage was 14.1 feet.
* Flood stage is 15.0 feet.
* Minor flooding is forecast.
* Forecast...The river will reach flood stage again this afternoon
  and crest near 15.5 feet this afternoon, then fall to below flood
  stage Friday morning.
* Impact...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.

&&

LAT...LON 4780 12190 4779 12212 4786 12217 4791 12203 4793 12202
      4793 12190       

$$

WAC061-232145-
/O.EXT.KSEW.FL.W.0057.000000T0000Z-171125T1631Z/
/SNAW1.1.ER.171122T1807Z.171124T1400Z.171125T0131Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Saturday morning...

The Flood Warning continues for
  The Snohomish River at Snohomish
* Until Saturday morning.
* At  4:00 AM Thursday the stage was 25.0 feet.
* Flood stage is 25.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to rise and crest near 26.5 feet
  around 6 AM Friday. The river will fall below flood stage Friday 
  evening.
* Impact...At 25.0 feet, the Snohomish River will cause minor flooding
  of lowlands not protected by levees and on the Old Snohomish-Monroe
  highway.  A stage of 25 feet on the Snohomish River corresponds to 
  a Phase 2 in the Snohomish County flood program.

&&

LAT...LON 4786 12217 4789 12221 4796 12232 4809 12216 4794 12213
      4791 12203       

$$

WAC033-232145-
/O.EXT.KSEW.FL.W.0065.171123T1840Z-171124T1422Z/
/SQUW1.1.ER.171123T1840Z.171124T0000Z.171124T0522Z.NO/
446 AM PST Thu Nov 23 2017

...Flood Warning extended until Friday morning...

The Flood Warning continues for
  The Snoqualmie River near the Falls
* From 11 AM Thursday until Friday morning.
* At  3:45 AM Thursday the flow was 13300 cfs.
* Flood flow is 20000 cfs.
* Minor flooding is forecast.
* Forecast...The river will rise above flood flow around 11 AM 
  Thursday and crest near 26000 cfs around 4 PM Thursday. The river 
  will fall below flood flow tonight.
* Impact...At 20000 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       

$$

WAC033-232145-
/O.CON.KSEW.FL.W.0050.000000T0000Z-171125T0619Z/
/CRNW1.1.ER.171122T2040Z.171124T1200Z.171124T1819Z.NO/
446 AM PST Thu Nov 23 2017

The Flood Warning continues for
  The Snoqualmie River near Carnation
* From 1 PM Wednesday until Friday evening.
* At  4:15 AM Thursday the stage was 53.7 feet.
* Flood stage is 54.0 feet.
* Minor flooding is forecast.
* Forecast...The river will reach flood stage again midday today,
  crest near 55.0 feet late tonight, then fall to below flood stage
  Friday.
* 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       

$$

682
WGUS86 KSEW 231805
FLSSEW
Flood Statement
National Weather Service Seattle WA
1005 AM PST Thu Nov 23 2017

...The Flood Warning has ended for the following rivers in
Washington...

South Fork Nooksack River at Saxon Bridge affecting Whatcom County.
North Fork Stillaguamish River near Arlington affecting Snohomish
County.
South Fork Stillaguamish River near Granite Falls affecting
Snohomish County.

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

Nooksack River at North Cedarville affecting Whatcom County.
Nooksack River at Ferndale affecting Whatcom County.
Skagit River near Concrete affecting Skagit County.
Skagit River near Mt. Vernon affecting Skagit County.
Stillaguamish River at Arlington affecting Snohomish County.

.Flood Bulletin No. 30

North West Region

The upper forks of the Stillaguamish River fell below flood stage this morning, and are forecast to remain below flood stage. The main stem will still experience minor flooding, however. The South Fork Nooksack River also fell below flood stage, though the main stem will still have flooding today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive cars...vans...or trucks through flooded areas...this is
the cause of most flood related deaths in Washington. Be alert for
rapid changes and monitor developments by listening to NOAA Weather
radio or other local media.

WAC073-231835-
/O.CAN.KSEW.FL.W.0062.000000T0000Z-171124T0357Z/
/NSSW1.2.ER.171123T1040Z.171123T1245Z.171123T1256Z.UU/
1005 AM PST Thu Nov 23 2017

The Flood Warning has ended for
The South Fork Nooksack River at Saxon Bridge
* At 9:00 AM Thursday the stage was 7.6 feet.
* Flood stage is 8.0 feet.
* Fell below flood stage early this morning.
* Forecast...The river fell below flood stage 4:56 AM Thursday early
this morning and will continue to fall.

LAT...LON 4865 12219 4871 12226 4880 12224 4882 12215 4873 12215
4865 12208

WAC073-240305-
/O.CON.KSEW.FL.W.0060.000000T0000Z-171124T1337Z/
/NRKW1.2.ER.171123T1247Z.171123T1800Z.171124T0437Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning continues for
The Nooksack River at North Cedarville
* Until late tonight.
* At 9:30 AM Thursday the stage was 147.8 feet.
* Flood stage is 146.5 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Impact...At 148.0 feet, the Nooksack River will cause widespread
flooding downstream through Lynden...with swift waters covering
some farm lands and roads. Erosion may affect some river banks.

LAT...LON 4880 12224 4885 12236 4889 12247 4896 12247 4895 12233
4882 12215

WAC073-240305-
/O.EXT.KSEW.FL.W.0061.171123T1931Z-171125T1502Z/
/NKSW1.1.ER.171123T1931Z.171124T1200Z.171125T0602Z.NO/
1005 AM PST Thu Nov 23 2017

...Flood Warning extended until Saturday morning...

The Flood Warning continues for
The Nooksack River at Ferndale
* From 12 PM Thursday until Saturday morning.
* At 9:45 AM Thursday the stage was 16.6 feet.
* Flood stage is 18.0 feet.
* Minor flooding is forecast.
* Forecast...The river will rise above flood stage around 12 PM
Thursday and crest near 19.6 feet around 4 AM Friday. The river
will fall below flood stage Friday night.
* Impact...At 18.0 feet, the river begins overtopping its banks within
the City of Ferndale flooding low-lying areas within the City and
low pasture lands along the river from near Ferndale downstream to
the mouth.

LAT...LON 4889 12247 4887 12253 4878 12254 4876 12263 4891 12262
4896 12247

WAC057-240305-
/O.EXT.KSEW.FL.W.0054.000000T0000Z-171125T0235Z/
/CONW1.3.ER.171122T1439Z.171123T1730Z.171124T1435Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning continues for
The Skagit River near Concrete
* Until Friday evening.
* At 9:30 AM Thursday the stage was 33.5 feet.
* Flood stage is 28.0 feet.
* Major flooding is occurring and Major flooding is forecast.
* Forecast...The river will crest around 34 feet Thursday afternoon and
will fall to below flood stage Friday morning.
* Impact...At 32.5 feet, the Skagit River will cause flooding from
Rockport downstream through Sedro Woolley. Flood waters will
inundate low areas near the river...roads...and several residential
areas mainly Cape Horn...Hamilton and Thunderbird. Some water will
flow onto Cockreham Island and into the Nookachamps and Sterling
areas. Flooding will also occur in headwaters...tributaries...and
other streams within the Skagit Basin. This level for this location
corresponds to a Phase 2 flood in the Skagit County flood system.

LAT...LON 4845 12163 4848 12185 4846 12227 4853 12227 4856 12185
4850 12160

WAC057-240304-
/O.EXT.KSEW.FL.W.0055.000000T0000Z-171125T1806Z/
/MVEW1.2.ER.171123T0340Z.171124T1800Z.171125T0606Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning continues for
The Skagit River near Mt. Vernon
* Until Saturday morning.
* At 9:30 AM Thursday the stage was 29.7 feet.
* Flood stage is 28.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue to rise and crest near 31.4 feet
around 10 AM Friday. The river will fall below flood stage Friday
night.
* Impact...At 30.0 feet, the Skagit River will flood from Sedro
Woolley downstream through Mount Vernon to the mouth. Flood waters
will inundate some low-lying roads...farmlands and residential
areas. This level for this location on the Skagit corresponds to a
phase 1 flood in the Skagit County flood system.

LAT...LON 4846 12227 4840 12230 4830 12235 4837 12250 4845 12240
4853 12227

WAC061-231835-
/O.CAN.KSEW.FL.W.0063.000000T0000Z-171124T0630Z/
/ARGW1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning is cancelled for
The North Fork Stillaguamish River near Arlington
* At 9:15 AM Thursday the stage was 11.7 feet.
* Flood stage is 13.0 feet.

LAT...LON 4822 12164 4822 12191 4816 12211 4824 12214 4833 12193
4833 12164

WAC061-231835-
/O.CAN.KSEW.FL.W.0064.000000T0000Z-171124T0654Z/
/GFLW1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning is cancelled for
The South Fork Stillaguamish River near Granite Falls
* At 9:15 AM Thursday the stage was 10.8 feet.
* Flood stage is 14.0 feet.

LAT...LON 4806 12191 4808 12204 4816 12211 4824 12214 4816 12202
4815 12192

WAC061-240304-
/O.EXT.KSEW.FL.W.0048.000000T0000Z-171124T0952Z/
/ARLW1.3.ER.171122T0929Z.171122T1654Z.171123T2152Z.NO/
1005 AM PST Thu Nov 23 2017

The Flood Warning continues for
The Stillaguamish River at Arlington
* Until late tonight.
* At 9:39 AM Thursday the stage was 14.1 feet.
* Flood stage is 14.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river has crested and will continue to fall to below
flood stage early this afternoon.
* Impact...At 14.0 feet, the Stillaguamish River will locally spill
over its banks. Minor flooding around Silvana will occur...
including over Pioneer Highway. A stage of 14 feet on the
Stillaguamish River corresponds roughly to Phase 2 in the Snohomish
County Flood program.

LAT...LON 4816 12211 4817 12223 4816 12237 4826 12240 4823 12224
4824 12214

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Seattle, WA wrote its last area forecast discussion before this river flood warning went out at Nov 23, 3:00 AM PST, 46 minutes earlier.

Area forecast discussion, Nov 23, 3:00 AM PST, 46 minutes before

Area Forecast Discussion
National Weather Service Seattle WA
300 AM PST Thu Nov 23 2017

.SYNOPSIS...Rain will turn to scattered showers and much cooler,
more seasonable temperatures today as a cold front moves inland. The
scattered showers will continue into Friday as an upper level trough
follows the front. The next frontal system is expected to bring more
rain later Saturday into Sunday morning. This active weather pattern
should continue into early next week.

&&

.SHORT TERM...Changes to this unseasonably warm moist weather will
unfold today. The subtropical moisture source will shift inland as a
cold front tracks onshore and the flow aloft will become more
westerly. This change will usher in a much cooler more seasonable
late Nov air mass with rain changing to showers by afternoon. 850
millibar temperatures around 9 deg C are expected to drop to around
0 deg C late today. High temperatures today likely occurred early
this morning. Snow levels should drop close to 4000 ft by this
evening. The decrease in rainfall and the dropping snow levels will
help ease river runoff as well.

The offshore positive tilt upper trough should move onshore tonight
with Friday serving as a day in between weather systems with
scattered light showers in the queue. Looking upstream early this
morning, another upper level trough in the Bering Sea is forecast to
dig southeast off the coast Friday and Saturday. As it does so, the
flow aloft will once again back to SSW but the associated air mass
will not nearly be as warm and moist as the past few days.

These dynamics will developing another frontal system with warm
frontal rain spreading north into Western Washington during the day
Saturday and snow levels bouncing back up again ranging from 5000 to
7000 ft. This system will also develop a surface low that the progs
similarly track from south to north just inside 130W to across Cape
Scott on Vancouver Island Saturday night. Surface pressure rises
across Western Washington following the low and the associated cold
front should result in some blustery conditions by Sunday morning.
Buehner

.LONG TERM...The offshore upper trough is forecast to track onshore
with a cooler air mass and associated showers Sunday afternoon into
Monday. It is at this point that the mid range guidance begins to
diverge. Overall, ridging aloft is expected Monday for decreasing
showers. But then the question becomes whether an incoming warm
front will produce any rain Monday night into Tuesday as the GFS,
Canadian and Euro all differ on this solution. This issue continues
into Wednesday with more definitive resolution likely in the coming
days. Buehner

&&

.AVIATION...Moist, SW flow will continue over Western WA today for
rain across the area. Expect mainly MVFR to IFR ceilings with patchy
fog possible this morning. A trough will cross the area this
afternoon for strong onshore flow and showers but should see
ceilings improving. Showers will mainly affect the mountains tonight
with strong westerly flow aloft. 33

KSEA...MVFR this morning improving to VFR late this afternoon. South
winds 10-15 kt becoming southwest and increasing to 15g25 kt by 21z.
33

&&

.MARINE...Strong onshore flow will continue today as a trough
moves inland - expect Small Craft Advisory winds over most waters.
Winds will ease after midnight tonight in the interior. The next
front will stall over southern B.C. on Friday then dissipate.
Another vigorous system will arrive around Saturday night. Strong
southerly gradients are possible over the entire area Sunday. Gales
are possible over most waters with Small Craft Advisory conditions
over Puget Sound and Hood Canal. 33

&&

.HYDROLOGY...Another frontal system moved into Western Washington
overnight, with additional rainfall amounts of 1 to 3 inches -
highest over the Olympics and North Cascades. The snow level was
around 8000 feet. We can expected another 0.75 to 1.5 inches of rain
today, mostly this morning, as the system moves through. The snow
level will gradually fall, dropping to around 4000 feet late today
as precipitation decreases.

The list of rivers under flood warnings grew overnight. Rivers that
have already or still are flooding include the Satsop, Elwha,
Dungeness, Skokomish, the reach of the Cowlitz from Randle to Riffe
Lake, the Snoqualmie, Skykomish, Snohomish, Stillaguamish, Skagit,
and Nooksack. Major flooding is expected on the Skagit River near
Concrete and possibly downstream where the river goes through Mount
Vernon. In addition, heavy rain caused some flooding of the smaller
rivers that flow off the east side of the Olympic Mountains (Little
Quilcene, Big Quilcene, Dosewallips, Duckabush, Hamma Hamma).

Flooding could still develop on a few more rivers. We're most
concerned about the reach of the Nisqually near National and the
reach of the White at R Street Bridge near Auburn. Keep in mind,
though, that there is a chance of at least minor flooding on any of
the flood-prone rivers in our forecast area. A flood watch remains
in effect through today, and additional warnings could be issued
this morning.

For the current list of flood watches and warnings, please check:
www.wrh.noaa.gov/sew/get.php?pil=RVA&sid=SEW

In addition, there is a threat of landslides across the lowlands of
Western Washington. The USGS landslide guidance shows soil wetness
above the threshold of concern, and additional rain through Thursday
will drive those numbers higher and act as the trigger for
landslides.

Looking further out ... The flood threat should decrease Friday
through early next week. Additional fronts move through Western
Washington, but precipitation will not be as heavy and snow levels
will be in the 3000 to 5000 foot range. McDonnal

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...Flood Watch through this afternoon for Admiralty Inlet Area-
     Bellevue and Vicinity-Cascades of Pierce and Lewis Counties-
     Cascades of Snohomish and King Counties-Cascades of Whatcom
     and Skagit Counties-Central Coast-East Puget Sound Lowlands-
     Eastern Strait of Juan de Fuca-Everett and Vicinity-Hood
     Canal Area-Lower Chehalis Valley Area-North Coast-Olympics-
     Seattle and Vicinity-Southwest Interior-Tacoma Area-Western
     Strait of Juan De Fuca-Western Whatcom County.

PZ...Small Craft Advisory for rough bar until 4 AM PST Friday for
     Grays Harbor Bar.

     Small Craft Advisory until 4 AM PST Friday for Coastal Waters
     From Cape Flattery To James Island 10 To 60 Nm-Coastal
     Waters From Cape Flattery To James Island Out 10 Nm-Coastal
     Waters From James Island To Point Grenville 10 To 60 Nm-
     Coastal Waters From James Island To Point Grenville Out 10
     Nm-Coastal Waters From Point Grenville To Cape Shoalwater
     10 To 60 Nm-Coastal Waters From Point Grenville To Cape
     Shoalwater Out 10 Nm-Puget Sound and Hood Canal-West
     Entrance U.S. Waters Strait Of Juan De Fuca.

     Small Craft Advisory until 10 PM PST this evening for Admiralty
     Inlet-Central U.S. Waters Strait Of Juan De Fuca-East
     Entrance U.S. Waters Strait Of Juan De Fuca-Northern Inland
     Waters Including The San Juan Islands.

&&

www.weather.gov/seattle

You can see an illustrated version of this discussion at
www.wrh.noaa.gov/sew/gafd/latest_webafd.html

In the hours before

Special weather statement, Nov 23, 3:10 AM PST, 36 minutes before

Special Weather Statement
National Weather Service Seattle WA
310 AM PST Thu Nov 23 2017

WAZ001-503-504-506-507-509>517-555-556-558-559-567>569-240030-
San Juan County-Western Whatcom County-Southwest Interior-
Western Skagit County-Everett and Vicinity-Tacoma Area-
Admiralty Inlet Area-Hood Canal Area-Lower Chehalis Valley Area-
Olympics-Eastern Strait of Juan de Fuca-
Western Strait of Juan De Fuca-North Coast-Central Coast-
East Puget Sound Lowlands-Bellevue and Vicinity-Seattle and Vicinity-
Bremerton and Vicinity-Cascades of Whatcom and Skagit Counties-
Cascades of Snohomish and King Counties-
Cascades of Pierce and Lewis Counties-
310 AM PST Thu Nov 23 2017

...SIGNIFICANT RAINFALL THIS WEEK HAS INCREASED THE LANDSLIDE THREAT
IN WESTERN WASHINGTON THROUGH AT LEAST TONIGHT...

Recent rainfall has increased soil moisture to high levels across
Western Washington. Additional heavy rainfall is expected at times
today. Lowland areas may get another half to one inch of rain and
maintain the heightened threat of landslides.

For more information about current conditions, visit
www.weather.gov/seattle, select Hydrology Information under Rivers
and Lakes, and then scroll down for the link to the landslide
information pages.

For more information on landslides, visit the website for the
Washington State Department of Natural Resources landslide
geologic hazards at: http://bit.ly/2mtA3wn

www.weather.gov/seattle/

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 22, 10:58 PM PST	River Flood Warning	SEW	Clallam	19 hr
Nov 22, 10:58 PM PST	River Flood Warning	SEW	Clallam	23 hr
Nov 22, 11:27 PM PST	Areal Flood Warning	SEW	Clallam, Jefferson, Mason	12 hr
Nov 23, 2:09 AM PST	River Flood Warning	SEW	Whatcom	25 hr
Nov 23, 2:09 AM PST	River Flood Warning	SEW	Whatcom	43 hr
Nov 23, 2:47 AM PST	Small Craft Advisory	SEW		21 hr
Nov 23, 3:46 AM PST	River Flood Warning	SEW	Whatcom	16 hr
Nov 23, 3:46 AM PST	River Flood Warning	SEW	Snohomish	15 hr
Nov 23, 3:46 AM PST	River Flood Warning	SEW	King	26 hr
Nov 23, 3:46 AM PST	River Flood Warning	SEW	King, Pierce	7 days
Nov 23, 3:46 AM PST	River Flood Warning	SEW	Lewis, Pierce	22 hr

Nearby

River Flood Warnings in Washington, 2017 Every river flood warning in 2017

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.