355
WWUS86 KMTR 181104
RFWMTR

URGENT - FIRE WEATHER MESSAGE
National Weather Service San Francisco CA
404 AM PDT Fri Oct 18 2024

...RED FLAG WARNING NOW IN EFFECT THURSDAY NIGHT THROUGH SATURDAY
EVENING FOR THE BAY AREA AND CENTRAL COAST AS STRONG OFFSHORE
WINDS AND CRITICALLY DRY CONDITIONS ARE EXPECTED TO DEVELOP...

.Gusty north-northeast winds are expected to develop as an
"inside slider" system moves into the Great Basin this weekend.
Humidities will still be on the higher end at the start of the
event on Thursday, but are expected to quickly dry out as low as
the upper single digits Friday and Saturday. Peak winds are
expected overnight tonight into Friday morning for the North Bay
and Bay Area. Most areas across the region will be affected to
some degree, with likely exceptions being the immediate Big Sur
coast and the Marin/Sonoma coast. Winds largely on the order of
25-35 mph can be expected with gusts to 50 mph, isolated gusts to
65 mph across the highest terrain and ridgetops, most notably the
North Bay Interior Mountains and the Diablo Range.

CAZ006-502>504-506-508>510-512>515-529-182100-
/O.CON.KMTR.FW.W.0006.000000T0000Z-241020T0000Z/
San Francisco-Marin Coastal Range-Sonoma Coastal Range-
North Bay Interior Mountains-North Bay Interior Valleys-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-Santa Cruz Mountains-
Santa Clara Valley Including San Jose-Eastern Santa Clara Hills-
East Bay Hills-Northern Monterey Bay-
404 AM PDT Fri Oct 18 2024

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT SATURDAY FOR
STRONG OFFSHORE WINDS AND CRITICALLY DRY CONDITIONS FOR ALL
INTERIOR BAY AREA ZONES, AS WELL AS THE CITY OF SAN FRANCISCO,
THE SAN FRANCISCO PENINSULA COAST, AND THE BAY SHORELINE...

* AFFECTED AREA...Fire Weather Zone 006 San Francisco, Fire
  Weather Zone 502 Marin Coastal Range, Fire Weather Zone 503
  Sonoma Coastal Range, Fire Weather Zone 504 North Bay Interior
  Mountains, Fire Weather Zone 506 North Bay Interior Valleys,
  Fire Weather Zone 508 San Francisco Bay Shoreline, Fire
  Weather Zone 509 San Francisco Peninsula Coast, Fire Weather
  Zone 510 East Bay Interior Valleys, Fire Weather Zone 512
  Santa Cruz Mountains, Fire Weather Zone 513 Santa Clara Valley
  Including San Jose, Fire Weather Zone 514 Eastern Santa Clara
  Hills, Fire Weather Zone 515 East Bay Hills and Fire Weather
  Zone 529 Northern Monterey Bay.

* TIMING...11 PM Thursday until 5 PM Saturday

* WINDS...North 25 to 35 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...As low as 8 percent.

* LIGHTNING...None.

* IMPACTS...The combination of gusty winds and low humidity can
  cause fire to rapidly grow in size and intensity. Outdoor
  burning is not recommended. Despite recent cool weather and
  high humidity, we are expecting a widespread and prolonged
  offshore wind event which will likely dry fuels out very
  quickly given their volatility over the past several weeks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

CAZ516>518-528-182100-
/O.CON.KMTR.FW.W.0006.000000T0000Z-241020T0000Z/
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-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
404 AM PDT Fri Oct 18 2024

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT SATURDAY FOR
STRONG OFFSHORE WINDS FOR THE INTERIOR CENTRAL COAST...

* AFFECTED AREA...Fire Weather Zone 516 Southern Salinas
  Valley/Arroyo Seco and Lake San Antonio, Fire Weather Zone 517
  Santa Lucia Mountains and Los Padres National Forest, Fire
  Weather Zone 518 Mountains of San Benito County And Interior
  Monterey County including Pinnacles National Park and Fire
  Weather Zone 528 Northern Salinas Valley/Hollister Valley and
  Carmel Valley.

* TIMING...11 PM Thursday until 5 PM Saturday

* WINDS...North 25 to 35 mph with gusts up to 50 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* LIGHTNING...None.

* IMPACTS...The combination of gusty winds and low humidity can
  cause fire to rapidly grow in size and intensity. Outdoor
  burning is not recommended. Despite recent cool weather and
  high humidity, we are expecting a widespread and prolonged
  offshore wind event which will likely dry fuels out very
  quickly given their volatility over the past several weeks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$