Red Flag Warning 12-15-17
URGENT – FIRE WEATHER MESSAGE
National Weather Service San Diego CA
449 AM PST Fri Dec 15 2017
…RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 AM PST FOR STRONG
GUSTY WINDS AND LOW HUMIDITY…
…FIRE WEATHER WATCH IN EFFECT FROM LATE SATURDAY NIGHT THROUGH
SUNDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY…
.The Red Flag Warning for strong and gusty east to northeast
winds and low relative humidity will continue through 10 AM
this morning. Winds will weaken midday and turn onshore this
afternoon, strengthen Saturday, then turn back offshore and gusty
again late Saturday night through Sunday evening. A Fire Weather
Watch has been issued for the second Santa Ana event Sunday.
San Bernardino and Riverside County Valleys – The Inland Empire-
San Diego County Inland Valleys-San Bernardino County Mountains-
Including The Mountain Top And Front Country Ranger Districts Of
The San Bernardino National Forest-Riverside County Mountains-
Including The San Jacinto Ranger District Of The San Bernardino
National Forest-Santa Ana Mountains-
Including The Trabuco Ranger District of the Cleveland National
Forest-San Diego County Mountains-
Including The Palomar And Descanso Ranger Districts of the
Cleveland National Forest-San Gorgonio Pass Near Banning-
Orange County Inland Areas-
449 AM PST Fri Dec 15 2017
…RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING FOR STRONG WINDS AND LOW HUMIDITY…
..FIRE WEATHER WATCH REMAINS IN EFFECT FROM LATE SATURDAY NIGHT
THROUGH SUNDAY EVENING FOR STRONG WINDS AND LOW HUMIDITY…
* LOCATION…Mainly along the coastal mountain slopes, extending
into the adjacent valley areas, including below the Cajon
Pass, San Gorgonio Pass and inland Orange County.
* WIND…through this morning…Northeast to east 20 to 30
mph…with local gusts 50 mph through wind-prone canyons.
Saturday night through Sunday evening…northeast 20 to 30 mph
with gusts to 55 mph. Isolated gusts near 70 mph on remote
coastal slopes and through wind-prone canyons…mainly north of
San Diego County.
* HUMIDITY…Minimum 7 to 12 percent today. Minimum 10 to 15
* TIMING…through mid morning, then decreasing into afternoon and
turning onshore. Another round of Santa Ana winds possible
again Saturday evening through Sunday evening.
* FIRE WEATHER IMPACTS…Any fires that develop will likely
spread rapidly and be difficult to contain. Outdoor burning
should be avoided.
* WIND IMPACTS…Hazardous driving conditions for high profile
vehicles. Specific freeways that may be impacted include
interstates 10, 215, 15 and 8. Blowing dust or sand may
locally reduce visibility to 1 mile. Debris on roadways and
falling tree branches possible.
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 heat can contribute to
extreme fire behavior.
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.