Fire Weather Planning Forecast For Extreme Southwestern California
National Weather Service San Diego CA
250 AM PDT Wed Jul 15 2020

.DISCUSSION…
Through Thursday, a weak trough of low pressure over California
will keep high temperatures west of the mountains a little cooler
than average with a marine layer around 2500 feet deep. For Friday
through the weekend, high pressure to the east will expand into
southern California bringing a warming trend with high
temperatures near to slightly above average. For the early to
middle part of next week, the high pressure will weaken and move
north slightly with the mid level flow becoming south to
southeasterly. This could begin to direct some monsoonal moisture
into southern California with some afternoon clouds over the
mountains and with the lower deserts not quite as hot.

FIRE WEATHER OUTLOOK

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-
250 AM PDT Wed Jul 15 2020

.TODAY…
Sky/weather………Sunny.
Max temperature…..74 to 84 above 6000 feet to 80 to 90 below 6000
feet.
24 HR TREND……Up 3 degrees.
Min humidity……..10 to 15 percent on desert slopes to 15 to 25
percent on coastal slopes.
24 HR TREND……Up 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 14 mph. Gusts to 30 mph.
RIDGETOP………Winds south 6 to 9 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.

.TONIGHT…
Sky/weather………Clear.
Min temperature…..51 to 61 above 6000 feet to 58 to 67 below 6000
feet.
24 HR TREND……Up 2 degrees.
Max humidity……..20 to 25 percent on desert slopes to 50 to 60
percent on coastal slopes.
24 HR TREND……Up 5 percent.
WIND (20 FT)……..
SLOPES………..Winds west 6 to 14 mph with gusts to 30 mph
becoming south 6 to 10 mph with gusts to 20 mph
after midnight.
RIDGETOP………Winds west 6 to 8 mph becoming southeast 6 to 9
mph with gusts to 20 mph after midnight.
CWR (>0.10 IN)……0 percent.
LAL……………..1.

.THURSDAY…
Sky/weather………Sunny.
Max temperature…..75 to 85 above 6000 feet to 81 to 91 below 6000
feet.
24 HR TREND……Up 2 degrees.
Min humidity……..10 to 15 percent.
24 HR TREND……Little change.
WIND (20 FT)……..
SLOPES………..Winds south 6 to 15 mph. Gusts to 20
mph…becoming 30 mph in the afternoon.
RIDGETOP………Winds south 6 to 9 mph with gusts to 20 mph.
CWR (>0.10 IN)……0 percent.
LAL……………..1.


FORECAST AND TRENDS

FORECAST DAYS 3 THROUGH 7…
SUSTAINED WINDS LESS THAN 20 MPH EXCEPT WHEN SPECIFIED

.THURSDAY NIGHT…Clear. Lows in the lower 60s. Light winds.
.FRIDAY…Sunny. Highs in the mid 80s. South winds around 5 mph.
.FRIDAY NIGHT…Clear. Lows in the mid 60s.
.SATURDAY…Mostly sunny. Highs in the mid 80s.
.SATURDAY NIGHT…Mostly clear. Lows in the mid 60s.
.SUNDAY…Mostly sunny. Highs in the mid 80s.
.SUNDAY NIGHT…Mostly clear. Lows in the mid 60s.
.MONDAY…Mostly sunny. Highs in the mid 80s.
.MONDAY NIGHT…Mostly clear. Lows in the mid 60s.
.TUESDAY…Mostly sunny. Highs in the mid 80s.

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