Weather Alerts for Santa Cruz

Issued by the National Weather Service

Red Flag Warning  RED FLAG WARNING   Red Flag Warning
SANTA CRUZ

Areas Affected:
San Fransisco Peninsula Coast - Santa Cruz Mountains
Effective: Thu, 10/22 1:00am Updated: Thu, 10/22 2:26am Urgency: Expected
Expires: Fri, 10/23 8:00am Severity:  Severe  Certainty: Likely

 
Details:
...Dry conditions and bursts of gusty offshore winds forecast in
higher terrain around the San Francisco Bay Area over the next
several days...
Offshore winds increase Wednesday evening once again bringing dry
conditions around the Bay Area providing a continued risk of new
wildfire starts and rapid wildfire spread through Friday morning.
Strongest wind gusts are expected at higher elevations of the
North Bay Mountains and East Bay Hills, with winds mixing down and
increasing in the East Bay Valleys. By early Thursday morning,
offshore winds will increase over the Santa Cruz Mountains and
reach the San Mateo coastline. Expect winds to subside slightly
Thursday afternoon, before increasing for yet another round of
gustier offshore winds Thursday evening into Friday morning.
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 AM THURSDAY TO 8 AM
PDT FRIDAY FOR FOR GUSTY OFFSHORE WINDS AND DRY CONDITIONS FOR
FIRE WEATHER ZONES 509 AND 512...
* AFFECTED AREA...FIRE WEATHER ZONES 509 AND 512 including the
Santa Cruz Mountains and the San Mateo Coastline.
* WIND...North to northeast 15 to 20 mph with gusts up to 40
mph. Winds will be strongest during the overnight hours.
Locally stronger winds are possible over the higher ridges,
peaks, and passages that lead to the shoreline.
* HUMIDITY...Daytime humidities gradually falling to the 12-20
percent range, even down to the coast. Poor overnight humidity
recoveries in the 20-30 percent range.
* HIGHEST THREAT...is located from Half Moon Bay southward as
dry winds from the mountains race down to the coast.
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.

Information:
A Red Flag Warning means that critical fire weather conditions
are either occurring now...or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.