Spot Forecast
Issued by NWS San Diego, CA

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10
605
FNUS76 KSGX 181753
FWSSGX

Spot Forecast for San Bernardino Spot Forecast...San Bernardino County, Office of Emergency
National Weather Service San Diego CA
953 AM PST Sat Jan 18 2025

Forecast is based on forecast start time of 0900 PST on January 20.
If conditions become unrepresentative, contact the National Weather
Service.

...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY EVENING...

.DISCUSSION...

Northeasterly winds increase by late Monday morning, peaking Monday
evening into Tuesday morning. Wind gusts may exceed 30 mph at times.
Humidity will be very low both afternoons, in the low teens on
Monday and single digits on Tuesday, and overnight humidity recovery
will be poor, only in the mid 20s. The strongest winds will peak
during the overnight hours, unlikely to coincide with the lowest
humidity. Winds remain gusty through early Tuesday afternoon, but
will begin to taper off Tuesday evening. While humidity will remain
extremely low into Wednesday afternoon, still in the single digits,
the lack of stronger winds by Wednesday afternoon should limit fire
weather concerns. Dry conditions and above-normal temperatures will
prevail through the end of the week. No precipitation is expected.

.MARTIN LUTHER KING JR DAY...

Sky/weather.........Mostly sunny (5-15 percent).
Max temperature.....Around 67.
Min humidity........13 percent.
Surface winds (mph).Light winds becoming northeast 7 to 17 mph with
                    gusts to around 26 mph late in the morning.
Chance of pcpn......0 percent.
Mixing height.......5300 ft AGL.
Transport winds.....Northeast 1 to 10 mph increasing to 26 to 30
                    mph.
Rainfall amount.....0.00 inches.

TIME (PST)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........15  3   3   3   3   3   3   4   4
Weather cov.....
Weather type....
Tstm cov........
Temp............47  54  55  58  62  65  66  63  64
RH..............46  34  31  25  19  15  13  14  13
Surface wnd dir.NE  NE  NE  N   N   N   NE  NE  NE
Surface wnd spd.3   4   6   9   10  13  14  17  16
Surface wnd gst.8   9   12  14  17  21  25  26  25
Chc of pcpn (%).0   0   0   0   0   0   0   0   0

.MONDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Min temperature.....Around 39.
Max humidity........26 percent.
Surface winds (mph).Northeast winds 9 to 14 mph. Gusts up to 22 mph
                    early in the evening then 22 mph after 3 am.
Chance of pcpn......0 percent.
Mixing height.......1300 ft AGL.
Transport winds.....Northeast 13 to 21 mph.
Rainfall amount.....0.00 inches.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........4   4   4   4   9   9   9   9   9   9   12  12
Weather cov.....
Weather type....
Tstm cov........
Temp............61  54  56  54  47  43  43  43  43  42  41  40
RH..............14  18  17  19  24  26  26  24  22  21  21  22
Surface wnd dir.NE  NE  N   N   N   N   N   N   N   NE  NE  NE
Surface wnd spd.13  10  9   9   9   9   9   9   10  13  14  14
Surface wnd gst.22  18  16  16  15  15  15  16  18  21  22  22
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0

.TUESDAY...

Sky/weather.........Mostly sunny (10-20 percent) then becoming
                    partly cloudy (20-30 percent).
Max temperature.....Around 67.
Min humidity........8 percent.
Surface winds (mph).North winds 7 to 14 mph. Gusts up to 22 mph
                    early in the morning.
Chance of pcpn......0 percent.
Mixing height.......4300 ft AGL.
Transport winds.....Northeast 7 to 13 mph.
Rainfall amount.....0.00 inches.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........12  12  12  12  21  21  21  21  21  21  26  26
Weather cov.....
Weather type....
Tstm cov........
Temp............39  40  44  49  55  59  62  64  66  66  66  63
RH..............22  21  18  14  12  10  9   8   8   8   8   9
Surface wnd dir.NE  NE  NE  NE  NE  NE  NE  N   N   N   N   N
Surface wnd spd.14  9   9   9   9   9   9   9   9   9   6   6
Surface wnd gst.22  16  16  16  16  16  16  15  15  15  12  12
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0

$$
Forecaster...SAMANTHA ZUBER
Requested by...Ramiro L Mendez
Type of request...OTHER
.TAG 2500895.0/SGX
.DELDT 01/18/25
.FormatterVersion 2.0.0
.EMAIL ramiro.mendez@oes.sbcounty.gov