Spot Forecast
Issued by NWS San Diego, CA

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Spot Forecast for PERRIS ECC AC CONTINGENCY...RIVERSIDE COUNTY FIRE
National Weather Service San Diego CA
958 PM PDT Fri Aug 15 2025

Forecast is based on forecast start time of 2200 PDT on August 15.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Patchy low clouds and mist in the mornings with excellent
overnight recoveries, followed by brisk northwest winds in the
late afternoon and moderate daytime humidity. Otherwise, dry, mild
weather continues.

.REST OF TONIGHT...

Sky/weather.........Mostly clear becoming partly cloudy with patchy fog
early in the morning.
Min temperature.....Around 57 degrees.
Max humidity........100 percent.
Surface winds (mph).South 1-3 mph.
 Ridgetop...........Southeast up to 5 mph.
Chance of pcpn......0 percent.
Mixing height.......Decreasing to 300 ft AGL.
Transport winds.....South 2 to 5 mph.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.
Snow level..........10400-10600 ft.

TIME (PDT)      10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........1   14  14  14  49  49  49  92
Weather cov.....                PTY PTY PTY PTY
Weather type....                FOG FOG FOG FOG
Tstm cov........
Temp............69  67  65  64  63  62  61  60
RH..............70  76  80  82  85  85  88  92
Surface wnd dir.SE  S   S   S   S   S   S   S
Surface wnd spd.6   7   6   4   3   3   3   3
Surface wnd gst.12  13  12  10  8   8   8   7
Ridge wind dir..SE  SW  S   S   S   S   S   S
Ridge wind spd..0   0   0   0   5   5   5   5
Chc of pcpn (%).0   0   0   0   0   0   0   0
Snow lvl (kft)..10  11  11  11  11  11  11  11

.SATURDAY...

Sky/weather.........Cloudy with patchy fog in the morning clearing
to sunny mid-to-late morning.
Max temperature.....Around 88 degrees.
Min humidity........37-40 percent.
Surface winds (mph).Variable 1-3 mph winds becoming northwest 7-9 mph
after 1400 PDT.
 Ridgetop...........South around 5 mph shifting to the southwest
                    late in the afternoon.
Chance of pcpn......0 percent.
Mixing height.......4500 ft AGL.
Transport winds.....South 1-5 mph shifting to the west
                    mph in the late morning and afternoon.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.
Snow level..........10100-10600 ft.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........92  92  60  60  60  1   1   1   0   0   0   1
Weather cov.....PTY PTY PTY PTY PTY
Weather type....FOG FOG FOG FOG FOG
Tstm cov........
Temp............60  59  61  64  69  75  79  83  85  86  86  84
RH..............98  100 100 87  72  57  48  42  39  40  43  47
Surface wnd dir.S   S   S   S   S   S   S   SW  SW  SW  NW  NW
Surface wnd spd.3   3   3   3   3   1   1   3   3   4   7   9
Surface wnd gst.7   7   7   7   6   6   6   7   8   10  13  14
Ridge wind dir..S   S   S   SE  SE  S   S   SW  SW  SW  SW  W
Ridge wind spd..5   5   5   5   5   5   5   5   5   5   5   5
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Snow lvl (kft)..11  11  11  11  11  10  10  10  10  10  10  10

.SATURDAY NIGHT...

Sky/weather.........Clear then becoming partly cloudy with patchy
fog early in the morning.
Min temperature.....Around 57 degrees.
Max humidity........100 percent.
Surface winds (mph).North winds around 7 mph early in the evening
                    becoming variable 1-3 mph after 1900 PDT.
 Ridgetop...........West around 5 mph shifting to the northwest
                    early in the evening, then shifting to the
                    southwest overnight.
Chance of pcpn......0 percent.
Mixing height.......200 ft AGL.
Transport winds.....West 1-5 mph shifting to the south late in the
evening.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.
Snow level..........10000-10100 ft.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........1   1   1   1   1   9   9   9   9   9   9   38
Weather cov.....
Weather type....
Tstm cov........
Temp............82  80  75  72  69  68  66  64  63  61  60  60
RH..............49  52  59  66  72  76  80  84  88  93  96  97
Surface wnd dir.N   N   NE  E   SE  S   S   S   S   S   S   S
Surface wnd spd.7   4   3   3   3   3   3   3   1   1   1   1
Surface wnd gst.13  10  8   8   7   7   7   6   6   6   6   6
Ridge wind dir..W   NW  NW  NW  NW  NW  W   SW  SW  SW  SW  SW
Ridge wind spd..5   5   0   0   0   0   0   0   0   0   5   5
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Snow lvl (kft)..10  10  10  10  10  10  10  10  10  10  10  10

.SUNDAY...

Sky/weather.........Partly cloudy with patchy fog in the morning
clearing to sunny mid-morning.
Max temperature.....Around 91 degrees.
Min humidity........38 percent.
Surface winds (mph).Light winds becoming northwest 8-12 mph with
                    gusts up to 20 mph in the afternoon.
 Ridgetop...........West around 5 mph shifting to the northwest around 10
mph after 1300 PDT.
Chance of pcpn......0 percent.
Mixing height.......5400 ft AGL.
Transport winds.....East around 1 mph shifting to the northwest 5-10 mph
in the late morning and afternoon.
Rainfall amount.....0.00 inches.
Snowfall amount.....0.0 inches.
Snow level..........9900-10300 ft.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........38  38  38  38  38  0   0   0   0   0   0   0
Weather cov.....
Weather type....
Tstm cov........
Temp............59  59  62  66  72  78  82  85  87  88  88  86
RH..............100 100 100 84  66  52  45  40  38  38  41  44
Surface wnd dir.SE  NE  N   N   N   NW  NW  NW  NW  NW  NW  NW
Surface wnd spd.1   1   1   3   3   3   6   9   10  13  14  14
Surface wnd gst.6   6   6   6   7   8   12  15  17  21  23  23
Ridge wind dir..W   W   NW  NW  W   W   W   W   W   W   W   W
Ridge wind spd..5   5   5   5   5   5   5   10  10  10  10  10
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Snow lvl (kft)..10  10  9.9 9.9 9.9 10  10  10  10  10  10  10

$$
Forecaster...CHANDLER PRICE
Requested by...TODD LAMBERT
Type of request...OTHER
.TAG 2520018.0/SGX
.DELDT 08/15/25
.FormatterVersion 2.0.0
.EMAIL todd.lambert@fire.ca.gov