211
FNUS76 KEKA 150150
FWSEKA

Spot Forecast for MP 18 Fire...NCIMT
National Weather Service Eureka CA
650 PM PDT Mon Sep 14 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...Temperatures remain close to average tomorrow in the low
70sat ridgetop. Morning light easterly winds will eventually shift to
NW flow by late morning with gusts up to 15 on ridges and up to 25mph
for the valley building in the afternoon. RH are expected to bottom out
around 35-40% Tuesday. Come Wednesday, an upper level trough and weak
cold front will enter the area. Minimal moisture is expected with this
front, severely limiting any rainfall chances to under 10% for even
light rain potential. Further east from the incident site, afternoon
thunderstorms are possible, but not probable, with chances around 5% for
the MP18 area. Winds are expected to be slightly stronger Wednesday due
to the unstable atmosphere.

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Max temperature.....71-79.
Min humidity........36-43 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph in the
                    morning...becoming variable 2 to 5 mph,
                    then...becoming west 5 to 9 mph early in the
                    afternoon.
Mixing height.......400-2200 ft AGL increasing to 1400-2400 ft AGL
                    early in the afternoon.
Transport winds.....North around 3mph west 6-7mph late in the
                    morning.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   3   9   9   9   2   2   2   10  10  10  12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............53  52  54  58  64  68  71  73  74  73  73  70
RH..............57  56  55  51  46  42  41  39  40  43  46  50
20 FT wind dir..NE  NE  E   E   E   NW  NW  NW  W   W   W   W
20 FT wind spd..5   5   6   6   6   3   3   3   9   9   9   6
20 FT wind gust.6   6   8   8   8               12  12  12  8
Mix hgt (kft)...0.4 0.4 0.6 0.6 0.6 2.2 2.2 2.2 2.4 2.4 2.4 1.4
Transp wind dir.N   N   N   N   N   W   W   W   W   W   W   W
Transp wind spd.3   3   3   3   3   7   7   7   7   7   7   6

.TUESDAY NIGHT...

Sky/weather.........Mostly clear then becoming mostly cloudy.
CWR.................0 percent.
Min temperature.....49-52.
Max humidity........68-78 percent.
Wind (20 ft)........West winds 5-7 mph early in the
                    evening...becoming variable 2-4 mph,
                    then...becoming north around 5 mph late in the
                    evening.
Mixing height.......Beginning around 300 building to around 2400 ft AGL.
Transport winds.....West around 6 mphnortheast around 3 mph late in
                    the evening.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........12  12  13  13  13  21  21  21  22  22  22  60
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............68  65  57  56  55  54  54  53  52  52  51  51
RH..............55  63  69  69  67  68  68  68  69  71  73  74
20 FT wind dir..W   W   NW  NW  NW  N   N   N   N   N   N   N
20 FT wind spd..4   4   3   3   3   3   3   2   2   2   3   4
20 FT wind gust.6   6   5   5   5   5   5   4   4   4   5   6
Mix hgt (kft)...1.4 1.4 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.W   W   W   W   W   NE  NE  NE  NE  NE  NE  E
Transp wind spd.6   6   6   6   6   3   3   3   3   3   3   3

.WEDNESDAY...

Sky/weather.........Mostly cloudy then becoming sunny then becoming
                    partly cloudy.
CWR.................1 percent.
Max temperature.....69-77.
Min humidity........41-49 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph in the
                    morning...becoming variable 2 to 4 mph,
                    then...becoming west 5 to 7 mph early in the
                    afternoon...becoming variable 2 to 4 mph.
Mixing height.......400 ft AGL increasing to 5500 ft AGL
                    early in the afternoon then decreasing to 2700 ft
                    AGL late in the afternoon.
Transport winds.....East around 3 mph southeast around 9 mph late in
                    the morning, then southwest around 6 mph late in
                    the afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........60  60  14  14  14  38  38  38  38  38  38  38
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............51  51  52  55  60  65  68  70  71  72  72  70
RH..............73  71  69  64  57  51  48  46  45  47  49  53
20 FT wind dir..N   N   E   E   E   N   N   N   W   W   W   W
20 FT wind spd..5   5   6   6   6   7   7   8   9   9   10  8
20 FT wind gust.7   7   9   9   9   10  10  12  13  13  15  12
Mix hgt (kft)...0.4 0.4 0.4 0.4 0.4 2.9 2.9 2.9 5.5 5.5 5.5 2.7
Transp wind dir.E   E   E   E   E   SE  SE  SE  SE  SE  SE  SW
Transp wind spd.3   3   3   3   3   9   9   9   9   9   9   6

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Mostly clear. Lows in the mid 50s. Highs 68 to 80. Winds
generally less than 10 mph.
.FRIDAY...
Clear. Lows in the lower to mid 50s. Highs 71 to 82. Winds
generally less than 10 mph.
.SATURDAY...
Clear. Lows in the mid to upper 50s. Highs 73 to 85. Winds
generally less than 10 mph.

.OUTLOOK FOR SUNDAY SEPTEMBER 20 THROUGH THURSDAY SEPTEMBER 24...
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.

$$
Forecaster...Schmiegel
Requested by...Collin Ewing
Type of request...WILDFIRE
.TAG 2621732.1/EKA
.DELDT 09/14/26
.EMAIL 2026.mp18.plans@firenet.gov