409
FNUS76 KEKA 202212
FWSEKA
SPOT FORECAST FOR MP 18 FIRE...NCIMT
NATIONAL WEATHER SERVICE EUREKA CA
312 PM PDT SUN SEP 20 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 WILL WEAKEN EARLY THIS WEEK ALLOW FOR
SLIGHTLY COOLER THOUGH STILL SEASONABLY WARM AND DRY CONDITIONS
WITH HIGHS IN THE UPPER 70S AND RH AROUND 35 PERCENT. WINDS WILL
CONTINUE TO BE GENTLE OUT OF THE WEST. SIMILAR CONDITIONS WILL
PERSIST UNTIL LATE IN THE WEEK. A COLD FRONT WILL MOST LIKELY
CROSS THE AREA AROUND FRIDAY. THIS FRONT WILL CERTAINLY BRING
COOLER CONDITIONS WITH SOME MODELS NOW SHOWING A 10% CHANCE OF
VERY LIGHT WETTING RAIN.
MONDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....76-82.
MIN HUMIDITY........36-42 PERCENT.
WIND (20 FT)........NORTHWEST 3 TO 6 MPH.
MIXING HEIGHT.......1200-1600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 4 TO 8 MPH.
TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........37 46 46 46 64 64 64 69 69 69 62
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0
TEMP............55 57 60 64 67 70 73 74 73 72 72
RH..............62 62 58 56 51 50 47 48 51 54 59
20 FT WIND DIR..NE NW NW NW W W W W W W W
20 FT WIND SPD..3 2 2 2 4 4 4 5 5 5 4
20 FT WIND GUST. 5 5 5 7 7 7 12 12 12 10
MIX HGT (KFT)...0.4 0.5 0.5 0.5 1.5 1.5 1.5 1.6 1.6 1.6 0.9
TRANSP WIND DIR.N N N N NW NW NW NW NW NW W
TRANSP WIND SPD.2 2 2 2 6 6 6 6 6 6 5
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....54-57.
MAX HUMIDITY........84-90 PERCENT.
WIND (20 FT)........VARIABLE 1 TO 3 MPH.
MIXING HEIGHT.......200 TO 400 FT AGL.
TRANSPORT WINDS.....NORTH 1 TO 3 MPH.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........62 62 59 59 59 21 21 21 32 32 32 35
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............69 65 62 59 59 58 59 58 58 57 56 56
RH..............63 68 74 73 72 71 70 70 70 71 72 74
20 FT WIND DIR..W W W W W NE NE NE NE NE NE NE
20 FT WIND SPD..4 4 2 2 2 3 3 3 2 2 2 3
20 FT WIND GUST.10 10 3 3 3 5 5 5 3 3 3
MIX HGT (KFT)...0.9 0.9 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 N N N N N N N
TRANSP WIND SPD.5 5 5 5 5 2 2 2 2 2 2 2
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....74-80.
MIN HUMIDITY........38-44 PERCENT.
WIND (20 FT)........NORTHWEST 4 TO 7 MPH.
MIXING HEIGHT.......1600 TO 2000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 10 MPH.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........35 35 31 31 31 12 12 12 8 8 8 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 M
TEMP............55 55 55 58 61 65 68 70 72 71 70 68
RH..............74 75 74 70 64 59 54 51 50 52 56 61
20 FT WIND DIR..NE NE NE NE NE NW NW NW W W W W
20 FT WIND SPD..3 3 2 2 2 4 4 4 7 7 7 7
20 FT WIND GUST. 5 5 5 7 7 7 12 12 12 13
MIX HGT (KFT)...0.4 0.4 0.3 0.3 0.3 1.5 1.5 1.5 2.4 2.4 2.4 2.0
TRANSP WIND DIR.N N N N N NW NW NW NW NW NW NW
TRANSP WIND SPD.2 2 2 2 2 7 7 7 7 7 7 7
FORECAST DAYS 3 THROUGH 5
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 50S. HIGHS 76 TO 82.
MIN RH AROUND 30 PERCENT. WEST WINDS UP TO 6 MPH.
THURSDAY
MOSTLY CLEAR. LOWS IN THE MID TO UPPER 50S. HIGHS 74 TO 80.
MIN RH AROUND 34 PERCENT. WEST WINDS UP TO 6 MPH.
FRIDAY
PARTLY CLOUDY. LOWS IN THE MID TO UPPER 50S. HIGHS 68 TO 74.
MIN RH AROUND 44 PERCENT. WEST WINDS UP TO 8 MPH.
.
FORECASTER...JAMES WHITE
REQUESTED BY...COLLIN EWING
TYPE OF REQUEST...WILDFIRE
.TAG 2621733.8/EKA
.DELDT 09/20/26
.EMAIL 2026.MP18.PLANS@FIRENET.GOV
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