620
FNUS76 KEKA 072150
FWSEKA
SPOT FORECAST FOR MP 18 FIRE...NCIMT
NATIONAL WEATHER SERVICE EUREKA CA
250 PM PDT MON SEP 7 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
HIGH PRESSURE REBUILDS THIS WEEK BRINGING MUCH
WARMER AND DRIER CONDITIONS. VALLEYS COULD SEE HIGHS IN THE HIGH
90S WITH HIGHER ELEVATIONS IN THE 70S AND 80S. WINDS WILL BE
BREEZIEST IN THE HIGHER TERRAIN WITH BREEZY NORTHWEST WINDS IN
THE AFTERNOON AT AROUND 5 TO 10 MPH, WITH HIGHER GUSTS UP TO 15 ON
THE RIDGES. WINDS TURN EASTERLY OVERNIGHT AND ARE EXPECTED TO BE
ESPECIALLY BREEZY TUESDAY NIGHT INTO WEDNESDAY WITH GUSTS OF 20
MPH OR HIGHER POSSIBLE. WINDS START TO EASE WEDNESDAY INTO
THURSDAY, AND THE WARM PATTERN CONTINUES THROUGH THURSDAY. A
TROUGH WILL ARRIVE THIS WEEKEND WITH A WEAK COLD FRONT. THIS IS
VERY LOW CONFIDENCE AT THIS POINT WITH ONLY AROUND A 5% CHANCE OF
WETTING RAIN (OVER 0.1") AND A 20% CHANCE FOR ANYTHING MEASURABLE
(OVER 0.01"). THIS WILL DEEPEN THE MARINE LAYER AND LIKELY BRING
MARINE STRATUS, REGARDLESS.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....52-55.
MAX HUMIDITY........54-77 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH EARLY IN THE
EVENING...BECOMING NORTHEAST 5 TO 10 MPH IN
THE EVENING.
MIXING HEIGHT.......2700 FT AGL DECREASING TO 200 FT AGL EARLY IN
THE EVENING.
TRANSPORT WINDS.....NORTH AROUND 7 MPH, SOUTHEAST AROUND 6 MPH LATE
IN THE NIGHT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........18 18 31 31 31 20 20 20 20 20 20 24
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............69 66 62 58 58 58 58 57 57 56 55 55
RH..............49 56 57 57 59 58 57 55 56 55 54 54
20 FT WIND DIR..NW NW N N N NE NE NE NE NE NE NE
20 FT WIND SPD..8 8 3 3 3 7 7 7 7 7 7 7
20 FT WIND GUST.12 12 6 6 6 12 12 12 12 12 12 12
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.N N N N N NE NE NE NE NE NE SE
TRANSP WIND SPD.7 7 7 7 7 7 7 7 7 7 7 6
TUESDAY
SKY/WEATHER.........SUNNY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....75-92.
MIN HUMIDITY........15-23 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 8 MPH IN THE
MORNING...BECOMING WEST 5 TO 8 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......200-900 FT AGL INCREASING TO 2600-3900 FT AGL
EARLY IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 6 MPH, WEST LATE IN THE MORNING,
THEN NORTH LATE IN THE AFTERNOON.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 24 18 18 18 28 28 28 38 38 38 60
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............55 54 56 60 67 72 75 78 80 80 80 79
RH..............53 52 51 47 38 33 30 24 21 20 24 31
20 FT WIND DIR..NE NE NE NE NE W W W W W W NW
20 FT WIND SPD..7 7 5 5 5 4 4 4 7 7 7 8
20 FT WIND GUST.12 12 8 8 8 6 6 6 10 10 10 10
MIX HGT (KFT)...0.2 0.2 0.2 0.2 0.2 0.9 0.9 0.9 3.9 3.9 3.9 2.6
TRANSP WIND DIR.SE SE SE SE SE W W W W W W N
TRANSP WIND SPD.6 6 6 6 6 6 6 6 6 6 6 6
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 55-59.
MAX HUMIDITY........43-70 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH EARLY IN THE
EVENING...BECOMING EAST 5 TO 15 MPH OVERNIGHT.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 6 MPH, EAST 6 TO 7 MPH LATE IN THE
EVENING.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........60 60 11 11 11 6 6 6 5 5 5 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............76 72 68 64 64 64 63 63 62 61 60 59
RH..............38 42 43 44 44 44 43 42 42 42 38 38
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 9 9 9 13
20 FT WIND GUST.10 10 6 6 6 13 13 13 16 16 16 21
MIX HGT (KFT)...2.6 2.6 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
TRANSP WIND DIR.N N N N N E E E E E E E
TRANSP WIND SPD.6 6 6 6 6 6 6 6 6 6 6 7
WEDNESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....80-97.
MIN HUMIDITY........11-19 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 15 MPH IN THE MORNING...
BECOMING WEST AROUND 5 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2700 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 7 MPH, NORTHWEST AROUND 3 MPH LATE IN
THE MORNING.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........8 8 13 13 13 1 1 1 5 5 5 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............59 59 60 64 71 76 80 83 84 85 84 82
RH..............39 40 40 37 32 26 21 17 16 18 22 28
20 FT WIND DIR..E E E E E NE NE NE W W W W
20 FT WIND SPD..13 13 8 8 8 2 2 2 4 4 4 6
20 FT WIND GUST.21 21 17 17 17 3 3 3 8 8 8 9
MIX HGT (KFT)...0.2 0.2 0.2 0.2 0.2 0.6 0.6 0.6 2.7 2.7 2.7 1.7
TRANSP WIND DIR.E E E E E NW NW NW NW NW NW N
TRANSP WIND SPD.7 7 7 7 7 3 3 3 3 3 3 3
FORECAST DAYS 3 THROUGH 5
THURSDAY
MOSTLY CLEAR. LOWS 56 TO 65. HIGHS 76 TO
96. WEST WINDS 5 TO 10 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 50S. HIGHS 68 TO 85. WINDS
GENERALLY LESS THAN 5 MPH.
SATURDAY
MOSTLY CLEAR. LOWS NEAR 50. HIGHS 60 TO 76. WINDS GENERALLY LESS
THAN 5 MPH.
OUTLOOK FOR SUNDAY SEPTEMBER 13 THROUGH THURSDAY SEPTEMBER 17
FOR NW CALIF...NEAR NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
FORECASTER...BOOMSMA
REQUESTED BY...COLLIN EWING
TYPE OF REQUEST...WILDFIRE
.TAG 2621383.0/EKA
.DELDT 09/07/26
.EMAIL 2026.MP18.PLANS@FIRENET.GOV
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