Alert archive / Washington / Flood Watches in 2021
Flood Watch 2, NWS Seattle, WA
NWS Seattle, WA issued this flood watch at Jan 10, 2021, 2:52 PM PST for 14 counties in Washington. It took effect at Jan 11, 2021, 10:00 PM PST. It was in force for 54 hr.
The area
The counties it named.
The facts
- Issued
- Jan 10, 2021, 2:52 PM PST (22:52 UTC)
- In effect from
- Jan 11, 2021, 10:00 PM PST
- Expired
- Jan 14, 2021, 4:00 AM PST
- In force
- 54 hr
- Issued by
- NWS Seattle, WA
- Flood severity
- None
Counties Clallam County, WA, Grays Harbor County, WA, Island County, WA, Jefferson County, WA, King County, WA, Kitsap County, WA, Lewis County, WA, Mason County, WA, Pierce County, WA, San Juan County, WA, Skagit County, WA, Snohomish County, WA, Thurston County, WA, Whatcom County, WA
The radar
The Seattle radar (KATX), 54 km from the middle of the area, began a volume at 22:57 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 nearest sounding before it
Quillayute State, WA (KUIL), launched 12:00Z, 10.9 hours before the alert went out and 138 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 496 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 278 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
621 WGUS66 KSEW 102252 FFASEW URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Seattle WA 252 PM PST Sun Jan 10 2021 WAC045-111200- /O.NEW.KSEW.FA.A.0002.210112T0600Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mason- Including the cities of Shelton 252 PM PST Sun Jan 10 2021 ...FLOOD WATCH IN EFFECT FROM MONDAY EVENING THROUGH WEDNESDAY EVENING... The National Weather Service in Seattle has issued a * Flood Watch for a portion of northwest Washington, including the following area, Mason. * From Monday evening through Wednesday evening * Heavy rainfall over the Olympic mountains will force sharp rises on the Skokomish River with flooding likely by Monday night. Additional rainfall will keep the river above flood stage through Wednesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away or be swept away. River banks and culverts can become unstable and unsafe. && $$ 33
6 follow-up statements
648 WGUS66 KSEW 111039 FFASEW URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Seattle WA 239 AM PST Mon Jan 11 2021 WAC009-027-029-031-033-035-053-055-057-061-067-073-121200- /O.EXA.KSEW.FA.A.0002.210112T0600Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Pierce-San Juan- Skagit-Snohomish-Thurston-Whatcom- Including the cities of Hoquiam, Bremerton, Friday Harbor, Port Townsend, Lacey, Everett, Freeland, Langley, Marysville, Tumwater, Anacortes, Mount Vernon, Lynnwood, Silverdale, Edmonds, Bellingham, Sedro-Woolley, Sequim, Olympia, Seattle, Burlington, Tacoma, and Aberdeen 239 AM PST Mon Jan 11 2021 ...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The National Weather Service in Seattle has expanded the * Flood Watch to include portions of northwest Washington and west central Washington, including the following areas, in northwest Washington, Clallam, Grays Harbor, Island, Jefferson, Kitsap, San Juan, Skagit and Whatcom. In west central Washington, King, Pierce, Snohomish and Thurston. * From this evening through Wednesday evening * Heavy rainfall is expected this evening through Wednesday. Total rainfall amounts of 1 to 3 inches are expected across the lowlands with 3 to 6 inches in the mountains. Snow levels will rise to 5000 to 7000 feet on Tuesday. Sharp rises are expected on area rivers with a few potentially reaching flood stage by Wednesday. The highest potential for river flooding is currently focused on the Olympic Peninsula and in the lowlands from Seattle southward. * High rainfall rates at times Monday night into Tuesday and Tuesday night into Wednesday morning could also lead to localized urban and small stream flooding. Heavy rain combined with the already high soil moisture will lead to an increased landslide threat. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ WAC045-121200- /O.CON.KSEW.FA.A.0002.210112T0600Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mason- Including the cities of Shelton 239 AM PST Mon Jan 11 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The Flood Watch continues for * A portion of northwest Washington, including the following area, Mason. * From this evening through Wednesday evening * Heavy rainfall over the Olympic mountains will force sharp rises on the Skokomish River with flooding likely by Monday night. Additional rainfall will keep the river above flood stage through Wednesday. * High rainfall rates at times Monday night into Tuesday and Tuesday night into Wednesday morning could also lead to localized urban and small stream flooding. Heavy rain combined with the already high soil moisture will lead to an increased landslide threat. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CC
225 WGUS66 KSEW 111057 FFASEW URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Seattle WA 257 AM PST Mon Jan 11 2021 WAC041-121200- /O.EXA.KSEW.FA.A.0002.210112T0600Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lewis- Including the cities of Fords Prairie and Chehalis 257 AM PST Mon Jan 11 2021 ...FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The National Weather Service in Seattle has expanded the * Flood Watch to include a portion of west central Washington, including the following area, Lewis. * From this evening through Wednesday evening * Heavy rainfall is expected this evening through Wednesday. Total rainfall amounts of 1 to 3 inches are expected across the lowlands with 3 to 6 inches in the mountains. Snow levels will rise to 5000 to 7000 feet on Tuesday. Sharp rises are expected on area rivers with a few potentially reaching flood stage by Wednesday. The highest potential for river flooding is currently focused on the Olympic Peninsula and in the lowlands from Seattle southward. * High rainfall rates at times Monday night into Tuesday and Tuesday night into Wednesday morning could also lead to localized urban and small stream flooding. Heavy rain combined with the already high soil moisture will lead to an increased landslide threat. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ WAC009-027-029-031-033-035-045-053-055-057-061-067-073-121200- /O.CON.KSEW.FA.A.0002.210112T0600Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Mason-Pierce-San Juan-Skagit-Snohomish-Thurston-Whatcom- Including the cities of Hoquiam, Bremerton, Friday Harbor, Port Townsend, Lacey, Everett, Freeland, Langley, Marysville, Tumwater, Anacortes, Mount Vernon, Lynnwood, Silverdale, Edmonds, Bellingham, Shelton, Sedro-Woolley, Sequim, Olympia, Seattle, Burlington, Tacoma, and Aberdeen 257 AM PST Mon Jan 11 2021 ...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The Flood Watch continues for * Portions of northwest Washington and west central Washington, including the following areas, in northwest Washington, Clallam, Grays Harbor, Island, Jefferson, Kitsap, Mason, San Juan, Skagit and Whatcom. In west central Washington, King, Pierce, Snohomish and Thurston. * From this evening through Wednesday evening * Heavy rainfall is expected this evening through Wednesday. Total rainfall amounts of 1 to 3 inches are expected across the lowlands with 3 to 6 inches in the mountains. Snow levels will rise to 5000 to 7000 feet on Tuesday. Sharp rises are expected on area rivers with a few potentially reaching flood stage by Wednesday. The highest potential for river flooding is currently focused on the Olympic Peninsula and in the lowlands from Seattle southward. The Skokomish River will rise sharply with flooding likely by Monday night. * High rainfall rates at times Monday night into Tuesday and Tuesday night into Wednesday morning could also lead to localized urban and small stream flooding. Heavy rain combined with the already high soil moisture will lead to an increased landslide threat. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CC
344 WGUS66 KSEW 120947 FFASEW Flood Watch National Weather Service Seattle WA 147 AM PST Tue Jan 12 2021 WAC009-027-029-031-033-035-041-045-053-055-057-061-067-073-131215- /O.CON.KSEW.FA.A.0002.000000T0000Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Lewis-Mason-Pierce- San Juan-Skagit-Snohomish-Thurston-Whatcom- Including the cities of Chehalis, Fords Prairie, Hoquiam, Bremerton, Friday Harbor, Port Townsend, Anacortes, Everett, Freeland, Langley, Marysville, Tumwater, Lacey, Mount Vernon, Lynnwood, Silverdale, Edmonds, Bellingham, Shelton, Sedro-Woolley, Sequim, Olympia, Seattle, Burlington, Tacoma, and Aberdeen 147 AM PST Tue Jan 12 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flood Watch continues for * Portions of northwest Washington and west central Washington, including the following areas, in northwest Washington, Clallam, Grays Harbor, Island, Jefferson, Kitsap, Mason, San Juan, Skagit and Whatcom. In west central Washington, King, Lewis, Pierce, Snohomish and Thurston. * Through Wednesday evening * Heavy rainfall is expected through Wednesday. Rainfall amounts over the past 24 hours range from 2 to 4 inches on the Olympic Peninsula, one-quarter inch to 1 inch in the lowlands, and around 1 inch in the Cascades. As heavy rain continues, expect an additional 1 to 4 inches in the Olympic Peninsula, 0.25 to 1.5 inches in the lowlands, and 2 to 4 inches in the Cascades through Wednesday. Snow levels will continue to rise to 6000 to 8000 feet today. Sharp rises are expected on area rivers with the potential for many rivers to reach flood stage area-wide. The highest potential for river flooding is currently focused rivers flowing off the Olympics and in the lowlands from King County southward. * High rainfall rates at times this morning and tonight into Wednesday morning could also lead to localized urban and small stream flooding. Heavy rain combined with the already high soil moisture will lead to an increased landslide threat. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CC
464 WGUS66 KSEW 131010 FFASEW Flood Watch National Weather Service Seattle WA 210 AM PST Wed Jan 13 2021 WAC009-027-029-031-033-035-041-045-053-055-067-073-131115- /O.CAN.KSEW.FA.A.0002.000000T0000Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clallam-Grays Harbor-Island-Jefferson-King-Kitsap-Lewis-Mason-Pierce- San Juan-Thurston-Whatcom- Including the cities of Olympia, Tacoma, Chehalis, Bellingham, Aberdeen, Fords Prairie, Freeland, Silverdale, Hoquiam, Langley, Bremerton, Friday Harbor, Shelton, Tumwater, Seattle, Port Townsend, Sequim, and Lacey 210 AM PST Wed Jan 13 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for portions of northwest Washington and west central Washington, including the following areas, in northwest Washington, Clallam, Grays Harbor, Island, Jefferson, Kitsap, Mason, San Juan and Whatcom. In west central Washington, King, Lewis, Pierce and Thurston has been cancelled. Heavy rainfall is coming to an end early this morning. Additional river flooding is not expected outside of the current warnings. Urban and small stream issues may linger through the morning hours as water continues to recede. $$ WAC057-061-132315- /O.CON.KSEW.FA.A.0002.000000T0000Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Skagit-Snohomish- Including the cities of Lynnwood, Everett, Edmonds, Burlington, Marysville, Sedro-Woolley, Mount Vernon, and Anacortes 210 AM PST Wed Jan 13 2021 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flood Watch continues for * Portions of northwest Washington and west central Washington, including the following areas, in northwest Washington, Skagit. In west central Washington, Snohomish. * Through this evening * Heavy rainfall is coming to an end this morning but rivers are still rising. A few locations on the Skagit and Snohomish Rivers may near flood stage today. Urban and small stream issues may also linger through the morning hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CC
434 WGUS66 KSEW 132312 FFASEW URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Seattle WA 312 PM PST Wed Jan 13 2021 WAC061-140015- /O.CAN.KSEW.FA.A.0002.000000T0000Z-210114T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Snohomish- Including the cities of Everett, Lynnwood, Marysville, and Edmonds 312 PM PST Wed Jan 13 2021 ...FLOOD WATCH IS CANCELLED... The Flood Watch for a portion of west central Washington, including the following area, Snohomish has been cancelled. The Flood Watch is cancelled. $$ WAC057-141200- /O.EXT.KSEW.FA.A.0002.000000T0000Z-210114T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Skagit- Including the cities of Burlington, Sedro-Woolley, Mount Vernon, and Anacortes 312 PM PST Wed Jan 13 2021 ...FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... The Flood Watch is now in effect for * A portion of northwest Washington, including the following area, Skagit. * Through late tonight * Although the heavier rainfall has ended, a few locations, particularly along the Skagit River may near flood stage late tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch means there is a potential for flooding based on current forecasts. You should monitor later forecasts and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. && $$ CK
645 WGUS66 KSEW 141133 FFASEW Flood Watch National Weather Service Seattle WA 333 AM PST Thu Jan 14 2021 WAC057-141245- /O.EXP.KSEW.FA.A.0002.000000T0000Z-210114T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Skagit- Including the cities of Burlington, Sedro-Woolley, Mount Vernon, and Anacortes 333 AM PST Thu Jan 14 2021 ...FLOOD WATCH WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... The Flood Watch for a portion of northwest Washington, including the following area, Skagit will expire AT 4 AM PST early this morning. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ Pullin
The office that day
Everything else NWS Seattle, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 2:17 AM PST | Gale Warning | SEW | 30 hr | |
| Jan 10, 3:03 PM PST | Gale Warning | SEW | 41 hr | |
| Jan 10, 3:15 PM PST | Winter Storm Watch | SEW | 11 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.