409
FNUS76 KEKA 081338
FWSEKA

Spot Forecast for MP 18 Fire...NCIMT
National Weather Service Eureka CA
638 AM PDT Tue Sep 8 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...Overnight recovery RH values up to 40% this morning.
Northeast winds easing from 6-8mph to 3-2mph by the late morning,
turning southeast around noon. Winds veer westerly by the late afternoon
and build to 7-9mph around 5pm and easing by sunset out of the NNW at 1-2mph.
High today of 81-82F with a minimum RH of 20-22%. Winds veer ENE overnight into
Wednesday at 5-6mph with RH recovery values ranging 32-40%. Winds switch to a westerly
bearing by late morning, building from 1-3mph in the afternoon and up to 5mph by the
early evening. Minimum RH values Wednesday around 15-17% and a high temp of 85-87F.

.TODAY...

Sky/weather.........Partly cloudy then becoming sunny then becoming
                    mostly cloudy.
CWR.................0 percent.
Max temperature.....76-84.
Min humidity........19-24 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph in the
                    morning...becoming variable 2 to 4 mph,
                    then...becoming west 5 to 8 mph early in the
                    afternoon.
Mixing height.......200-1100 ft AGL increasing to 2700-4100 ft AGL
                    early in the afternoon.
Transport winds.....East around 6 mphwest 5 to 6 mph late in the
                    morning.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........48  48  41  41  41  15  15  15  16  16  16  67
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............56  54  57  61  68  73  76  79  80  80  80  79
RH..............53  52  50  47  38  32  30  24  20  20  23  31
20 FT wind dir..NE  NE  NE  NE  NE  W   W   W   W   W   W   NW
20 FT wind spd..6   6   5   5   5   2   2   2   6   6   6   8
20 FT wind gust.8   8   6   6   6                           9
Mix hgt (kft)...0.2 0.2 0.2 0.2 0.2 1.1 1.1 1.1 4.1 4.1 4.1 2.7
Transp wind dir.E   E   E   E   E   W   W   W   W   W   W   NW
Transp wind spd.6   6   6   6   6   5   5   5   5   5   5   6

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy then
                    becoming clear.
CWR.................0 percent.
Min temperature.....Around 60.
Max humidity........41-49 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph early in the
                    evening...becoming variable 2 to 5 mph,
                    then...becoming east 5 to 8 mph late in the
                    evening.
Mixing height.......2700 ft AGL decreasing to 200 ft AGL early in
                    the evening.
Transport winds.....Northwest around 6 mpheast around 5 mph late in
                    the evening, thensoutheast around 6 mph early
                    in the morning.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........67  67  50  50  50  0   0   0   0   0   0   1
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............76  73  69  65  65  65  65  64  64  63  61  61
RH..............38  42  42  44  45  45  43  41  41  40  37  36
20 FT wind dir..NW  NW  N   N   N   E   E   E   E   E   E   E
20 FT wind spd..8   8   3   3   3   6   6   6   7   7   7   8
20 FT wind gust.9   9                           9   9   9   10
Mix hgt (kft)...2.7 2.7 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Transp wind dir.NW  NW  NW  NW  NW  E   E   E   E   E   E   SE
Transp wind spd.6   6   6   6   6   5   5   5   5   5   5   6

.WEDNESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Max temperature.....82-90.
Min humidity........14-19 percent.
Wind (20 ft)........East winds 5 to 8 mph in the morning...becoming
                    variable 2 to 4 mph, then...becoming west 5 to
                    6 mph late in the afternoon.
Mixing height.......200-700 ft AGL increasing to 2100-3200 ft AGL
                    early in the afternoon.
Transport winds.....Southeast around 6 mphwest around 3 mph late in
                    the morning, thennorth around 5 mph late in the
                    afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1   1   0   0   0   2   2   2   5   5   5   9
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............60  59  61  66  73  78  81  84  85  86  86  83
RH..............36  37  39  37  29  25  23  18  16  16  19  26
20 FT wind dir..E   E   E   E   E   W   W   W   W   W   W   W
20 FT wind spd..8   8   7   7   7   3   3   3   4   4   4   6
20 FT wind gust.10  10  8   8   8               5   5   5
Mix hgt (kft)...0.2 0.2 0.2 0.2 0.2 0.7 0.7 0.7 3.2 3.2 3.2 2.1
Transp wind dir.SE  SE  SE  SE  SE  W   W   W   W   W   W   N
Transp wind spd.6   6   6   6   6   3   3   3   3   3   3   5

.OUTLOOK FOR SUNDAY SEPTEMBER 13 THROUGH THURSDAY SEPTEMBER 17...
FOR NW CALIF...NEAR NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.

$$
Forecaster...Swafford
Requested by...Collin Ewing
Type of request...WILDFIRE
.TAG 2621385.0/EKA
.DELDT 09/08/26
.EMAIL 2026.mp18.plans@firenet.gov