Station Name: Friday Harbor
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 66 feet / 20 meters

Sensor Depth: -5.7 feet / -1.7 meters

Nearest Address:
Cantilever Way
Friday Harbor, WA 98250
San Juan County

GPS Coordinates: 48.546700, -123.010002

Nearby Water Temperatures

Hydrologic Outlook issued August 14 at 12:20PM PDT by NWS Seattle WA

Effective: Thu August 14, 2025, 12:20 PM
Expires: Fri August 15, 2025, 1:00 PM

ESFSEW A frontal system will move across the area Friday into Saturday across western Washington. Through Saturday afternoon, 3-5 inches of rain are expected across the mountains, with 0.5-1.5 inches expected through the lowlands. Very dry antecedent conditions has left the area soils dry and hard. This amount of rainfall in one storm will not have much time to soak into the very dry soil, which will result in heavy surface runoff. Impacts are uncertain due to how much moisture will be able to be absorbed by the soil. Several different threats are expected with this storm, which are detailed below. *Urban and urban-like flooding will be possible in flat areas and roadways. *Some small streams and creeks may become swollen due to rapid runoff while others may remain lower if the channel bed is able to absorb the water efficiently. *Rivers will not flood, but will undergo rapid rises to unusually high levels for this time of year, some of which may reach daily record crests. This will pose a threat to those engaged in recreational activities in and along river channels. *Burn scars will have the potential to undergo impacts, but the probability is low. Impacts may include flash flooding, debris flows, rock falls, and other falling debris. *Those engaging in recreational activities in the mountains may face challenges to where high water may make forest roads and trails difficult to traverse. Please monitor the latest forecasts from the National Weather Service for additional information.

Hydrologic Outlook issued August 14 at 12:20PM PDT by NWS Seattle WA

Effective: Thu August 14, 2025, 12:20 PM
Expires: Fri August 15, 2025, 1:00 PM

ESFSEW A frontal system will move across the area Friday into Saturday across western Washington. Through Saturday afternoon, 3-5 inches of rain are expected across the mountains, with 0.5-1.5 inches expected through the lowlands. Very dry antecedent conditions has left the area soils dry and hard. This amount of rainfall in one storm will not have much time to soak into the very dry soil, which will result in heavy surface runoff. Impacts are uncertain due to how much moisture will be able to be absorbed by the soil. Several different threats are expected with this storm, which are detailed below. *Urban and urban-like flooding will be possible in flat areas and roadways. *Some small streams and creeks may become swollen due to rapid runoff while others may remain lower if the channel bed is able to absorb the water efficiently. *Rivers will not flood, but will undergo rapid rises to unusually high levels for this time of year, some of which may reach daily record crests. This will pose a threat to those engaged in recreational activities in and along river channels. *Burn scars will have the potential to undergo impacts, but the probability is low. Impacts may include flash flooding, debris flows, rock falls, and other falling debris. *Those engaging in recreational activities in the mountains may face challenges to where high water may make forest roads and trails difficult to traverse. Please monitor the latest forecasts from the National Weather Service for additional information.

Hydrologic Outlook issued August 14 at 12:20PM PDT by NWS Seattle WA

Effective: Thu August 14, 2025, 12:20 PM
Expires: Fri August 15, 2025, 1:00 PM

ESFSEW A frontal system will move across the area Friday into Saturday across western Washington. Through Saturday afternoon, 3-5 inches of rain are expected across the mountains, with 0.5-1.5 inches expected through the lowlands. Very dry antecedent conditions has left the area soils dry and hard. This amount of rainfall in one storm will not have much time to soak into the very dry soil, which will result in heavy surface runoff. Impacts are uncertain due to how much moisture will be able to be absorbed by the soil. Several different threats are expected with this storm, which are detailed below. *Urban and urban-like flooding will be possible in flat areas and roadways. *Some small streams and creeks may become swollen due to rapid runoff while others may remain lower if the channel bed is able to absorb the water efficiently. *Rivers will not flood, but will undergo rapid rises to unusually high levels for this time of year, some of which may reach daily record crests. This will pose a threat to those engaged in recreational activities in and along river channels. *Burn scars will have the potential to undergo impacts, but the probability is low. Impacts may include flash flooding, debris flows, rock falls, and other falling debris. *Those engaging in recreational activities in the mountains may face challenges to where high water may make forest roads and trails difficult to traverse. Please monitor the latest forecasts from the National Weather Service for additional information.

avertissement de pluie en vigueur

Service Notice – June 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is planned for deployment for later in 2025. Data changes will appear in CAP-CP upon this deployment, 2) SAME event codes for a few alert types are updated and 3) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – juin 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est prévue d’être déployée plus tard en 2025. Des changements aux données apparaîtront dans le PC-PAC lors de ce déploiement, 2) des codes d’événement MSSC pour quelques types d’alerte ont été mis à jour et 3) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu August 14, 2025, 5:07 AM
Expires: Thu August 14, 2025, 9:07 PM

Rain, at times heavy, is expected. What: 50 mm of rain, locally in excess of 80 mm over higher terrain. When: Friday and Friday night. Hazards: - Poor visibility in heavy rain - Water pooling on roadways with an increased risk of hydroplaning - Sudden rises in water levels in creeks and rivers Where: Metro Vancouver - North Shore including West Vancouver and North Vancouver, Metro Vancouver - Northeast including Coquitlam and Maple Ridge, Squamish, Bowen Island, Gibsons. Additional information: An unseasonably moisture-laden frontal system will cross the B.C. south coast on Friday bringing heavy rain. The warm front arrives Friday morning with rain and strong southerly winds. The cold front arrives Friday afternoon and will bring the heaviest rainfall rates during the afternoon commute. The rain will end late evening on the Sunshine Coast and after midnight across eastern Metro Vancouver. Recreationalists are advised to be aware of the potential for sudden rises in river and creek levels in response to the heavy rain over the mountains. Heavy rain during the afternoon commute will result in poor visibility and an increased risk of hydroplaning. ### Heavy downpours can cause flash floods and water pooling on roads. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@ec.gc.ca or post reports on X using #BCStorm.

If visibility is reduced while driving, turn on your lights and maintain a safe following distance.

avertissement de pluie en vigueur

Service Notice – June 2025: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2025, changes are expected to include... 1) ECCC's initiative to upgrade the presentation of alerts into Colour-Coded Weather Alerts is planned for deployment for later in 2025. Data changes will appear in CAP-CP upon this deployment, 2) SAME event codes for a few alert types are updated and 3) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – juin 2025: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2025, il y aura des changements incluant... 1) l'initiative d'ECCC visant à améliorer la présentation des alertes sous forme d'alertes météorologiques codées par couleur est prévue d’être déployée plus tard en 2025. Des changements aux données apparaîtront dans le PC-PAC lors de ce déploiement, 2) des codes d’événement MSSC pour quelques types d’alerte ont été mis à jour et 3) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu August 14, 2025, 3:25 PM
Expires: Fri August 15, 2025, 7:25 AM

Rain, at times heavy, is expected. What: 50 mm of rain, locally in excess of 80 mm over higher terrain. When: Friday and Friday night. Hazards: - Poor visibility in heavy rain - Water pooling on roadways with an increased risk of hydroplaning - Sudden rises in water levels in creeks and rivers Where: Metro Vancouver - North Shore including West Vancouver and North Vancouver, Metro Vancouver - Northeast including Coquitlam and Maple Ridge, Fraser Valley - west including Abbotsford, Squamish, Bowen Island, Gibsons. Additional information: An unseasonably moisture-laden frontal system will cross the B.C. south coast on Friday bringing heavy rain. The warm front arrives Friday morning with rain and strong southerly winds. The cold front arrives Friday afternoon and will bring the heaviest rainfall rates during the afternoon commute. The rain will end late evening on the Sunshine Coast and after midnight across eastern Metro Vancouver and Fraser Valley. Recreationalists are advised to be aware of the potential for sudden rises in river and creek levels in response to the heavy rain over the mountains. Heavy rain during the afternoon commute will result in poor visibility and an increased risk of hydroplaning. ### Heavy downpours can cause flash floods and water pooling on roads. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to BCstorm@ec.gc.ca or post reports on X using #BCStorm.

If visibility is reduced while driving, turn on your lights and maintain a safe following distance.