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Red Flag Warnings - NorCal (11/19/2019-AM)

Kim Noyes
 

URGENT - FIRE WEATHER MESSAGE
National Weather Service San Francisco CA
511 AM PST Tue Nov 19 2019

...RED FLAG WARNING FOR THE NORTH BAY MOUNTAINS AND EAST BAY
HILLS LATE TUESDAY NIGHT THROUGH THURSDAY MORNING...

.Offshore winds are forecast to develop across the higher
elevations of the North Bay and East Bay beginning late Tuesday
night, and continuing during the day on Wednesday. These offshore
winds in combination with low relative humidity values will lead
to critical fire weather conditions. Additionally, poor overnight
relative humidity recoveries are expected Wednesday night and
into Thursday morning as a result of the continued offshore
winds.

CAZ507-511-192300-
/O.CON.KMTR.FW.W.0008.191120T1200Z-191121T1500Z/
North Bay Mountains-East Bay Hills and the Diablo Range-
511 AM PST Tue Nov 19 2019

...RED FLAG WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO 7 AM
PST THURSDAY FOR DRY OFFSHORE WINDS FOR FIRE WEATHER ZONES
507 AND 511...

* AFFECTED AREA...North Bay Mountains above 1000 feet, East Bay
  Hills above 1000 ft, and the Diablo Range. Fire weather zones
  507 and 511.

* WIND...North to northeast winds 20 to 30 mph with gusts 35 to
  45 mph. Local gusts at isolated peaks and ridgetops may
  approach and possibly exceed 60 mph.

* HUMIDITY...Wednesday afternoon relative humidity values
  dropping to 10 to 20 percent with localized single digits.
  Poor recoveries are forecast on Wednesday night with relative
  humidity values in the 30 to 45 percent range with localized
  values below 25 percent.

* IMPACTS...Any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.

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...dry fuels...and warm
temperatures can contribute to extreme fire behavior.

&&

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Sacramento CA
256 AM PST Tue Nov 19 2019

...RED FLAG WARNING IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
THURSDAY MORNING...

.A strong upper low moving into Southern California will bring a
period of breezy north to northeasterly winds to interior
Northern California to areas north of I-80 from late Tuesday
night into Thursday morning. Daytime relative humidities will be
low with moderate to locally poor overnight recoveries Wednesday
night. The combination of low humidity, extremely dry fuels, and
gusty winds will lead to critical fire weather conditions.

CAZ213-215>217-263-264-266-268-279-200000-
/O.CON.KSTO.FW.W.0011.191120T1200Z-191121T1500Z/
Eastern Portion of Shasta/Trinity NF-
Northern Sacramento Valley to Southern Tehama County Line Below
1000 Ft-
Central Sacramento Valley in Glenn, Colusa, Yuba, Northern
Sutter, and Butte County Below 1000 Ft-
Southern Sacramento Valley in Yolo-
Sacramento Far Western Placer, southern Sutter and Solano County
Below 1000 Ft-Southeast Edge Shasta-
Trinity NF and Western Portions of Tehama-Glenn Unit-
Lake County Portion of Lake-Napa-Sonoma Unit-
Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions
of Shasta-Trinity and Butte Units-
Northern Sierra Including Lassen NP and Plumas and Lassen NF/S
West of the Sierra Crest (West of Evans Peak-Grizzly Peak-
Beckworth Peak)-Eastern Mendocino NF-
256 AM PST Tue Nov 19 2019

...RED FLAG WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO 7 AM
PST THURSDAY FOR LOW HUMIDITY AND STRONG WIND FOR FIRE WEATHER
ZONES 213, 215, 216, 217, 263, 264, 266, 268, AND 279...

* AFFECTED AREAS...Fire weather zones 213, 215, 216, 217, 263,
  264, 266, 268, and 279. The northern and western Sacramento
  Valley, Sierra foothills, all north of I-80, as well as the
  Coastal Range and foothills.

* WIND...North to northeast wind 15 to 35 mph with gusts 35 to
  55 mph, locally higher in canyons and exposed ridges.

* HUMIDITY...Daytime minimum humidities in the teens and 20s
  with moderate to poor overnight recoveries in the 30s and 40s.

* IMPACTS...Any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended

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.

&&

Interact with us via social media
www.facebook.com/nws.sacramento
www.twitter.com/nwssacramento

$$

Urgent - Fire Weather Message
National Weather Service Eureka CA
118 AM PST Tue Nov 19 2019

...STRONG WINDS AND LOW HUMIDITY MAY BRING CRITICAL FIRE WEATHER
CONDITIONS WEDNESDAY THROUGH THURSDAY MORNING...

.Strong north to northeast winds and steadily lowering humidity
are expected to generate elevated to locally critical fire
weather conditions from early Wednesday morning through Thursday
morning, particularly across Mendocino, northern Lake, southern
interior Humboldt, and northern and eastern Trinity counties.
North winds will increase late Tuesday, and will turn to the
northeast during the day Wednesday. Meanwhile, humidity will begin
to drop rapidly Wednesday morning, and continue to drop through
Thursday morning. The overlap between these gusty winds and low
humidity will be maximized Wednesday and Wednesday night, which is
expected to be the period of greatest threat. Winds will weaken
quickly early Thursday, which will lower the fire weather threat.

CAZ276-277-192300-
/O.CON.KEKA.FW.W.0007.191120T1200Z-191121T1500Z/
Interior Mendocino-W Mendocino NF/E Mendocino Unit-
118 AM PST Tue Nov 19 2019

...RED FLAG WARNING REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO 7 AM
PST THURSDAY ABOVE 1500 FEET...

* AFFECTED AREA...Elevations above 1,500 feet.

* WIND...North to Northeast...sustained 15 to 25 mph with gusts
  between 35 and 45 mph expected at high elevations.

* HUMIDITY...Dropping to 15 to 20 percent Wednesday afternoon,
  with only 25 to 40 percent humidity recoveries Wednesday
  night at high elevations.

* IMPACTS...Any fires that develop will likely spread rapidly.
  Outdoor burning is not recommended.

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.


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