611
FNUS76 KEKA 240145
FWSEKA

Spot Forecast for Prosper Piles...Petrolia Fire Department
National Weather Service Eureka CA
545 PM PST Fri Jan 23 2026

If conditions become unrepresentative...contact the National Weather
Service.

If you have questions or concerns regarding this forecast, please
contact our office at (707) 443-6484

Please do not respond directly if you have received this in an email.

.DISCUSSION...Warm and dry conditions continue for the coming
days. Offshore flow will promote low relative humidities at night
above 1000 ft in elevation. RHs are likely to be lowest at night
with poor recoveries during the day. Winds may be especially
breezy from the northeast around mid morning Saturday. Lighter
winds are expected in the afternoon and overnight. Cloud cover
begins to increase by Sunday and winds turn more southerly, which
will bring slightly higher RHs. Wetting rain is possible by mid
week.

.TONIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
Min temperature.....Around 47.
Max humidity........Around 74 percent.
Wind (20 ft)........Northeast winds 3 to 5 mph.
Mixing height.......0-100 ft AGL.
Transport winds.....North 13 to 18 mph, east late in the night.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........6   5   5   5   6   6   6   7   7   7   14  14
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............51  51  51  50  50  49  49  50  49  49  48  48
RH..............74  70  73  73  64  59  64  46  41  41  34  32
20 FT wind dir..NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 FT wind spd..3   3   3   3   4   4   4   5   5   5   5   5
20 FT wind gust.6   6   6   6   7   7   7   9   9   9   9   9
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.N   N   N   N   N   N   N   N   N   N   E   E
Transp wind spd.18  18  18  18  13  13  13  13  13  13  13  13

.SATURDAY...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Max temperature.....Around 58.
Min humidity........Around 25 percent.
Wind (20 ft)........Northeast winds 5 to 15 mph.
Mixing height.......0-600 ft AGL.
Transport winds.....Northeast 8 to 13 mph.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14  19  19  19  4   4   4   14  14  14  33  33
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............47  48  48  49  50  53  55  57  57  58  57  56
RH..............48  26  24  35  22  28  44  36  39  43  43  41
20 FT wind dir..NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 FT wind spd..7   9   9   9   12  12  12  2   2   2   2   2
20 FT wind gust.12  12  12  12  16  16  16  5   5   5   5   5
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.1
Transp wind dir.E   E   E   E   NE  NE  NE  NE  NE  NE  NE  NE
Transp wind spd.13  13  13  13  9   9   9   9   9   9   8   8

.SATURDAY NIGHT...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
CWR.................0 percent.
Min temperature.....Around 48.
Max humidity........Around 40 percent.
Wind (20 ft)........Northeast winds 3 to 6 mph...shifting to the
                    east around 5 mph after midnight.
Mixing height.......0 ft AGL.
Transport winds.....Northeast around 8 mph, east in the late evening
                    and overnight.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........33  36  36  36  30  30  30  48  48  48  76  76
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............55  53  52  52  52  52  51  51  51  50  50  50
RH..............39  37  32  28  24  22  19  17  17  17  17  21
20 FT wind dir..N   NE  NE  NE  E   E   E   E   E   E   SE  SE
20 FT wind spd..3   3   3   6   5   5   5   5   5   5   5   5
20 FT wind gust.6   6   6   8   7   7   7   7   7   7   8   8
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.NE  NE  NE  NE  E   E   E   E   E   E   SE  SE
Transp wind spd.8   8   8   8   8   8   8   8   8   8   8   8

.SUNDAY...

Sky/weather.........Mostly cloudy.
CWR.................0 percent.
Max temperature.....Around 55.
Min humidity........48 percent.
Wind (20 ft)........Southeast winds 5 to 10 mph.
Mixing height.......0-700 ft AGL.
Transport winds.....Southeast 8 to 13 mph.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........76  86  86  86  85  85  85  87  87  87  93  93
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............49  49  49  49  50  51  53  54  54  54  53  52
RH..............24  28  30  32  35  42  48  55  53  50  55  55
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  S   S   S   S   S
20 FT wind spd..5   4   4   4   5   5   5   6   6   6   6   6
20 FT wind gust.8   8   8   8   8   8   8   9   9   9   9   9
Mix hgt (kft)...0.1 0.1 0.1 0.1 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.1
Transp wind dir.SE  SE  SE  SE  S   S   S   S   S   S   SE  SE
Transp wind spd.8   8   8   8   13  13  13  13  13  13  10  10

$$
Forecaster...Boomsma
Requested by...Fire Captain
Type of request...PRESCRIBED
.TAG 2600939.2/EKA
.DELDT 01/23/26
.EMAIL trainingofficer@petroliafire.org