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Santa Clara County Alerts
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Updated:January 28, 2025 4:30 pm PST

Freeze Warning FREEZE WARNING  
Santa Clara County

  Effective: Tue, 1/28 10:33am Severity:  Moderate 
  Updated: January 28, 2025 4:30 pm Urgency: Expected
  Expires: Tue, 1/28 10:15pm Certainty: Likely

Areas Affected: Eastern Santa Clara Hills - Southern Salinas Valley/Arroyo Seco and Lake San Antonio - Santa Lucia Mountains and Los Padres National Forest - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
 
Alert Details:
* WHAT...For the Freeze Warning, sub-freezing temperatures as low as
28 expected. For the Freeze Watch, sub-freezing temperatures as
low as 30 possible.

* WHERE...Interior Monterey County and the Santa Lucia Range, Most
of San Benito County and the Cholame Hills in Southeast Monterey
County, Eastern Santa Clara Hills, and Southern Salinas
Valley/Arroyo Seco and Lake San Antonio.

* WHEN...For the Freeze Warning, from 1 AM to 9 AM PST Wednesday.
For the Freeze Watch, from late Wednesday night through Thursday
morning.

* IMPACTS...Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Cold Conditions can lead
to hypothermia with prolonged exposure. Frost and freeze
conditions could kill crops, other sensitive vegetation and
possibly damage unprotected outdoor plumbing.

Information:
Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
Frost Advisory FROST ADVISORY  
Santa Clara County

  Effective: Tue, 1/28 10:33am Severity: Minor
  Updated: January 28, 2025 4:30 pm Urgency: Expected
  Expires: Tue, 1/28 10:15pm Certainty: Likely

Areas Affected: North Bay Interior Mountains - North Bay Interior Valleys - Santa Clara Valley Including San Jose - Northern Salinas Valley/Hollister Valley and Carmel Valley
 
Alert Details:
* WHAT...For the Frost Advisory, temperatures as low as 34 will
result in frost formation. For the Freeze Watch, near-freezing
temperatures as low as 32 possible.

* WHERE...The Santa Clara Valley, North Bay Interior Mountains,
North Bay Interior Valleys, and Northern Salinas Valley/Hollister
Valley and Carmel Valley.

* WHEN...For the Frost Advisory, from 1 AM to 9 AM PST Wednesday.
For the Freeze Watch, from late Wednesday night through Thursday
morning.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Cold Conditions can lead
to hypothermia with prolonged exposure.

Information:
Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
Freeze Watch FREEZE WATCH  
Santa Clara County

  Effective: Tue, 1/28 10:33am Severity:  Severe 
  Updated: January 28, 2025 4:30 pm Urgency: Future
  Expires: Tue, 1/28 10:15pm Certainty: Possible

Areas Affected: San Francisco Bay Shoreline - East Bay Interior Valleys - Santa Cruz Mountains - East Bay Hills - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...Near-freezing temperatures as low as 32 possible.

* WHERE...The East Bay and San Francisco Bay Shoreline, Monterey Bay
and the Big Sur Coast, and The Santa Cruz Mountains.

* WHEN...From late Wednesday night through Thursday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

Information:
Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
Freeze Watch FREEZE WATCH  
Santa Clara County

  Effective: Tue, 1/28 10:33am Severity:  Severe 
  Updated: January 28, 2025 4:30 pm Urgency: Future
  Expires: Tue, 1/28 10:15pm Certainty: Possible

Areas Affected: North Bay Interior Mountains - North Bay Interior Valleys - Santa Clara Valley Including San Jose - Northern Salinas Valley/Hollister Valley and Carmel Valley
 
Alert Details:
* WHAT...For the Frost Advisory, temperatures as low as 34 will
result in frost formation. For the Freeze Watch, near-freezing
temperatures as low as 32 possible.

* WHERE...The Santa Clara Valley, North Bay Interior Mountains,
North Bay Interior Valleys, and Northern Salinas Valley/Hollister
Valley and Carmel Valley.

* WHEN...For the Frost Advisory, from 1 AM to 9 AM PST Wednesday.
For the Freeze Watch, from late Wednesday night through Thursday
morning.

* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing. Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Cold Conditions can lead
to hypothermia with prolonged exposure.

Information:
Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
Freeze Watch FREEZE WATCH  
Santa Clara County

  Effective: Tue, 1/28 10:33am Severity:  Severe 
  Updated: January 28, 2025 4:30 pm Urgency: Future
  Expires: Tue, 1/28 10:15pm Certainty: Possible

Areas Affected: Eastern Santa Clara Hills - Southern Salinas Valley/Arroyo Seco and Lake San Antonio - Santa Lucia Mountains and Los Padres National Forest - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
 
Alert Details:
* WHAT...For the Freeze Warning, sub-freezing temperatures as low as
28 expected. For the Freeze Watch, sub-freezing temperatures as
low as 30 possible.

* WHERE...Interior Monterey County and the Santa Lucia Range, Most
of San Benito County and the Cholame Hills in Southeast Monterey
County, Eastern Santa Clara Hills, and Southern Salinas
Valley/Arroyo Seco and Lake San Antonio.

* WHEN...For the Freeze Warning, from 1 AM to 9 AM PST Wednesday.
For the Freeze Watch, from late Wednesday night through Thursday
morning.

* IMPACTS...Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Cold Conditions can lead
to hypothermia with prolonged exposure. Frost and freeze
conditions could kill crops, other sensitive vegetation and
possibly damage unprotected outdoor plumbing.

Information:
Take steps now to protect tender plants from the cold.

To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.