FIRE WEATHER OUTLOOK

FORECAST AND TRENDS

TODAY’S FIRE WEATHER OUTLOOK


Fire Weather Planning Forecast For Extreme Southwestern California
 National Weather Service San Diego CA
 249 AM PDT Tue Sep 29 2020
 
 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS
 AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE COASTAL
 SLOPES OF THE MOUNTAINS AND INLAND VALLEYS IN RIVERSIDE AND SAN
 DIEGO COUNTIES...
 
 .DISCUSSION...
 Hot and very dry conditions will continue this week for inland
 areas.  There will be gusty east winds for the coastal slopes of 
 the mountains and inland valleys today with critical fire weather 
 conditions. The return of onshore flow and weakening of high 
 pressure aloft will spread cooling and higher coastal humidity 
 inland for Friday through early next week.

CAZ255-300000-
San Bernardino County Mountains-
Including The Mountain Top And Front Country Ranger Districts Of
The San Bernardino National Forest-
249 AM PDT Tue Sep 29 2020

.TODAY…
Sky/weather………Sunny.
Max temperature…..72 to 82 above 6000 feet to 82 to 92 below 6000
feet.
24 HR TREND……Up 4 degrees.
Min humidity……..10 percent.
24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds north 6 to 11 mph becoming east in the
afternoon. Gusts to 20 mph.
RIDGETOP………Winds southeast 6 to 10 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.

.TONIGHT…
Sky/weather………Clear.
Min temperature…..40 to 50 above 6000 feet to 55 to 65 below 6000
feet.
24 HR TREND……Up 1 degree.
Max humidity……..15 to 20 percent.
24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds northeast 6 to 11 mph with gusts to 20
mph.
RIDGETOP………Winds east6 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.

.WEDNESDAY…
Sky/weather………Sunny.
Max temperature…..75 to 85 above 6000 feet to 84 to 94 below 6000
feet.
24 HR TREND……Little change.
Min humidity……..10 percent.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds north 6 to 11 mph with gusts to 20 mph.
RIDGETOP………Winds northeast 6 to 10 mph. Gusts to 20 mph in
the afternoon.

Basic Information

Current as of 9/28/2020, 6:48:43 AM
Incident Type Wildfire
Cause Human Caused
Date of Origin Saturday September 05th, 2020 approx. 10:30 AM
Location Yucaipa Ridge area, West Oak Glen, San Bernardino Mountains
Incident Commander Mike Wakowski,Incident Commander,California Interagency Incident Management Team 13
Coordinates 34.053 latitude, -116.992 longitude

Current Situation

Total Personnel 505
Size 22,680 Acres
Percent of Perimeter Contained 92%
Fuels Involved Grass and Chaparral transitioning to timber in higher elevations
Significant Events Increase in visible smoke across the fire as humidity’s lower and stump holes and burning logs consume.

There is still heat mid-way up along the west fork of Barton Creek to Anderson Peak that is near the perimeter but has been holding.

Majority of the fire activity is in the Monkeyface drainage above the 2018 Valley Fire Scar where the fire is backing into brush and isolated timber.

Outlook

Planned Actions Crews will continue to aggressively strengthen control lines and eliminate hot spots along the perimeter.

Current Weather

Weather Concerns A Red Flag Warning is in effect through 5 PM Monday for strong and gusty east winds and very low relative humidity values.

Monday’s Forecast: Mostly sunny. Maximum temperatures will top out between 88 and 93 degrees at 3,000 feet and 83 to 88 degrees at 6,000 feet. Minimum relative humidity values will be between 7 and 12 percent at 3,000 feet and 5 to 10 percent at 6,000 feet. Winds will be east around 15 mph gusting to 30 mph through 1100, then decreasing 10 to 15 mph with gusts to 25 mph through 1400, diminishing to 5 to 10 mph by late afternoon.

Outlook – Tuesday through Thursday: Hot and dry conditions are expected. Temperatures will top out between 91 and 98 degrees at 3,000 feet and 85 to 92 degrees at 6,000 feet. Minimum relative humidity values will be in the 9 to 16 percent range at 3,000 feet and 10 to 18 percent range at 6,000 feet. Winds will be west to northwest at 5 to 10 mph, gusting to around 20 mph in the afternoon.

The “Weather Alerts” page shows a graphic of the CONUS and the location of any current Weather Alerts that are in effect. These are updated by the National Weather Service SPC division continuously. Also a depiction of the type of alerts that are shown on the main graphic are listed below. So at a quick glance you can see if there are any current alerts for your local area.
These updated are continuously updates across the Continental U.S. (CONUS) Any advisories or warnings depicted here are current and in effect. Local alerts will show up in the San Bernardino alerts box, by clicking on this box local weather alerts will be shown here.