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Siskiyou County Alerts
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Updated:November 11, 2025 2:15 am PST

Dense Fog Advisory DENSE FOG ADVISORY  
Siskiyou County

  Effective: Tue, 11/11 1:00am Severity:  Moderate 
  Updated: November 11, 2025 2:15 am Urgency: Expected
  Expires: Tue, 11/11 9:00am Certainty: Likely

Areas Affected: Western Siskiyou County - Eastern Curry County and Josephine County - Jackson County
 
Alert Details:
* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...In California, in western Siskiyou County, the Klamath
River and Scott valleys, including Highways 3 and 96. In Oregon,
the Rogue, Illinois, and portions of the Applegate valleys,
including I-5 from near Grants Pass south to Medford and Phoenix,
Highway 238 west of Applegate and east of Jacksonville, and
Highway 199 from Grants Pass to the California border.

* WHEN...Until 9 AM PST Wednesday.

* IMPACTS...Low visibility could make driving conditions hazardous.

Information:
If driving, slow down and leave plenty of distance ahead of you.
Pedestrians and cyclists should wear bright or reflective clothing
to increase the chances of being seen by others in poor visibility
conditions.
Dense Fog Advisory DENSE FOG ADVISORY  
Siskiyou County

  Effective: Tue, 11/11 1:00am Severity:  Moderate 
  Updated: November 11, 2025 2:15 am Urgency: Expected
  Expires: Tue, 11/11 9:00am Certainty: Likely

Areas Affected: Central Siskiyou County
 
Alert Details:
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the High Wind Watch, south winds 25 to 35
mph with gusts up to 50 mph possible.

* WHERE...For the Dense Fog Advisory, portions of I-5 through the
Shasta Valley and Montague. For the High Wind Watch, the Shasta
Valley in Central Siskiyou County, including Weed, Montague, and
portions of Interstate 5 and highway 97.

* WHEN...For the Dense Fog Advisory, until 9 AM PST Wednesday. For
the High Wind Watch, from Wednesday morning through late Wednesday
night.

* IMPACTS...For the Dense Fog Advisory, Low visibility could make
driving conditions hazardous. High winds may move loose debris,
damage property and cause power outages. Travel could be
difficult, especially for high profile vehicles.

Information:
Monitor the latest forecasts and warnings for updates.

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
High Wind Watch HIGH WIND WATCH  
Siskiyou County

  Effective: Tue, 11/11 1:00am Severity:  Severe 
  Updated: November 11, 2025 2:15 am Urgency: Future
  Expires: Tue, 11/11 9:00am Certainty: Possible

Areas Affected: Central Siskiyou County
 
Alert Details:
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
less in dense fog. For the High Wind Watch, south winds 25 to 35
mph with gusts up to 50 mph possible.

* WHERE...For the Dense Fog Advisory, portions of I-5 through the
Shasta Valley and Montague. For the High Wind Watch, the Shasta
Valley in Central Siskiyou County, including Weed, Montague, and
portions of Interstate 5 and highway 97.

* WHEN...For the Dense Fog Advisory, until 9 AM PST Wednesday. For
the High Wind Watch, from Wednesday morning through late Wednesday
night.

* IMPACTS...For the Dense Fog Advisory, Low visibility could make
driving conditions hazardous. High winds may move loose debris,
damage property and cause power outages. Travel could be
difficult, especially for high profile vehicles.

Information:
Monitor the latest forecasts and warnings for updates.

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.