Fire Weather Planning Forecast For Extreme Southwestern California
National Weather Service San Diego CA
219 AM PDT Wed Oct 20 2021
.DISCUSSION…
Warmer and drier inland through Thursday with weak high pressure
aloft and weak onshore flow. Onshore flow will strengthen for
Friday through the weekend with the marine layer deepening onto
the coastal slopes of the mountains for the weekend. Cooling and
higher coastal humidity will spread inland with gusty southwest to
west winds in the mountains and deserts. A low pressure system
moving inland through central California will spread rain across
southwest California on Monday, decreasing Monday night and ending
Tuesday morning. There will also be stronger and gusty southwest
to west winds in the mountains and deserts on Monday. Then warmer
and dry for the middle of next week.
Fire Weather Forecast for CAZ255
CAZ255-256-202330-
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-
219 AM PDT Wed Oct 20 2021
.TODAY…
Sky/weather………Partly cloudy…becoming mostly sunny.
Max temperature…..55 to 65 above 6000 feet to 61 to 70 below 6000
feet.
24 HR TREND……Up 4 degrees.
Min humidity……..15 to 20 percent on desert slopes to 20 to 25
percent on coastal slopes.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds southeast 6 to 9 mph.
RIDGETOP………Winds west around 6 mph becoming southwest in
the afternoon.
CWR (>0.10 IN)……0 percent.
LAL……………..1.
.TONIGHT…
Sky/weather………Partly cloudy.
Min temperature…..30 to 40 above 6000 feet to 42 to 52 below 6000
feet.
24 HR TREND……Up 5 degrees.
Max humidity……..25 to 35 percent on desert slopes to 40 to 50
percent on coastal slopes.
24 HR TREND……Down 5 percent.
WIND (20 FT)……..
SLOPES………..Winds east6 mph.
RIDGETOP………Variable 1 to 3 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.
.THURSDAY…
Sky/weather………Partly cloudy.
Max temperature…..57 to 67 above 6000 feet to 64 to 74 below 6000
feet.
24 HR TREND……Up 2 degrees.
Min humidity……..15 to 20 percent.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds east 6 to 8 mph becoming south 6 to 9 mph
in the afternoon.
RIDGETOP………Winds south around 6 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.
FORECAST DAYS 3 THROUGH 7…
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED
.THURSDAY NIGHT…Not as cool. Mostly clear. Lows in the upper
40s. Light winds.
.FRIDAY…Mostly sunny. Highs in the mid 60s. Southwest winds
around 6 mph.
.FRIDAY NIGHT…Mostly clear. Lows in the mid 40s. West winds
around 6 mph.
.SATURDAY…Partly cloudy. Patchy fog in the morning. Highs in
the upper 50s. West winds around 7 mph.
.SATURDAY NIGHT…Partly cloudy. Lows in the mid 40s. West winds
around 8 mph.
.SUNDAY…Partly cloudy. Highs around 60. West winds around
7 mph.
.SUNDAY NIGHT…Partly cloudy. Slight chance of rain after
midnight. Lows in the mid 40s.
.MONDAY…Mostly cloudy with chance of rain. Highs in the lower
50s.
.MONDAY NIGHT…Partly cloudy. Chance of showers in the evening,
then chance of snow showers after midnight. Lows around 40.
.TUESDAY…Mostly sunny. Highs in the mid 50s.
SEVERE WEATHER OUTLOOK
