287
FNUS76 KEKA 201241
FWSEKA
SPOT FORECAST FOR MP 18 FIRE...NCIMT
NATIONAL WEATHER SERVICE EUREKA CA
541 AM 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
BROAD HIGH PRESSURE OVER THE BURN SITE WILL RESULT IN A
STABLE ATMOSPHERE THROUGH THE WEEKEND INTO EARLY THIS COMING WORK WEEK.
LIGHT WINDS AND TEMPERATURES NEAR NORMAL ARE EXPECTED TODAY. RH VALUES
WILL CONTINUE TO BE IN THE HIGH 30S TO LOW 40S AS NO MARINE INFLUENCE
IS EXPECTED AT THE SITE. TEMPERATURES WILL REMAIN WARM THROUGH THE WEEK
BEFORE DROPPING ON FRIDAY. OFFSHORE, EASTERLY WINDS COULD CREATE DECREASED
RH RECOVERIES TUESDAY FOR THE BURN SITE. ALL SAID HOWEVER, NO RAIN (>0.01")
IS EXPECTED AT ALL FOR THE NEXT 5 DAYS AT THE FIRE AT THIS TIME. VERY
LOW CHANCE OF SHOWERS IS POSSIBLE FOR FRIDAY, YET FORECAST CONFIDENCE
REMAINS VERY MINUSCULE AT THIS TIME.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....74-82.
MIN HUMIDITY........36-43 PERCENT.
WIND (20 FT)........VARIABLE 1 TO 3 MPH...BECOMING WEST 5 TO 7 MPH
EARLY IN THE AFTERNOON, THEN...BECOMING
VARIABLE 1 TO 3 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......400-1800 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 2 MPH WEST 5 TO 6 MPH LATE IN THE
MORNING.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........54 54 33 33 33 34 34 34 41 41 41 43
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............55 54 56 60 65 70 73 76 77 76 77 73
RH..............59 58 57 51 47 43 42 39 39 42 47 51
20 FT WIND DIR..NE NE NE NE NE W W W W W W W
20 FT WIND SPD..4 4 3 3 3 3 3 3 6 6 6 4
20 FT WIND GUST.6 6 6 6 6 7 7 7 10 10 10 10
MIX HGT (KFT)...0.4 0.4 0.5 0.5 0.5 1.6 1.6 1.6 1.8 1.8 1.8 0.9
TRANSP WIND DIR.N N N N N W W W W W W W
TRANSP WIND SPD.2 2 2 2 2 6 6 6 6 6 6 5
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY THEN
BECOMING PARTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....55-58.
MAX HUMIDITY........59-69 PERCENT.
WIND (20 FT)........VARIABLE 1 TO 3 MPH.
MIXING HEIGHT.......300-900 FT AGL.
TRANSPORT WINDS.....WEST AROUND 5 MPH NORTH AROUND 2 MPH LATE IN THE
EVENING.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........43 43 51 51 51 36 36 36 33 33 33 35
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............71 68 61 60 60 60 60 59 59 59 58 57
RH..............56 63 71 69 67 64 62 61 59 59 58 58
20 FT WIND DIR..W W NW NW NW N N N NE NE NE N
20 FT WIND SPD..4 4 2 2 2 2 2 2 3 3 3 3
20 FT WIND GUST.10 10 3 3 3 3 3 3 5
MIX HGT (KFT)...0.9 0.9 0.3 0.3 0.3 0.4 0.4 0.4 0.3 0.3 0.3 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
MONDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING SUNNY THEN BECOMING
PARTLY CLOUDY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....76-80F.
MIN HUMIDITY........42-47% PERCENT.
WIND (20 FT)........VARIABLE 1-3 MPH...BECOMING WEST 5-7 MPH
EARLY IN THE AFTERNOON.
MIXING HEIGHT.......400-2300 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 2 MPH WEST AROUND 7 MPH LATE IN THE
MORNING.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........35 35 29 29 29 22 22 22 29 29 29 36
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............57 56 57 61 65 69 72 75 76 75 75 72
RH..............58 58 58 54 51 47 46 44 45 48 51 54
20 FT WIND DIR..N N N N N W W W W W W W
20 FT WIND SPD..3 3 2 2 2 4 4 4 5 5 5 6
20 FT WIND GUST.5 5 5 5 5 7 7 7 12 12 12 12
MIX HGT (KFT)...0.4 0.4 0.7 0.7 0.7 2.2 2.2 2.2 2.3 2.3 2.3 1.3
TRANSP WIND DIR.N N N N N W W W W W W W
TRANSP WIND SPD.2 2 2 2 2 7 7 7 7 7 7 7
OUTLOOK FOR FRIDAY SEPTEMBER 25 THROUGH TUESDAY SEPTEMBER 29
FOR NW CALIF...ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
FORECASTER...SCHMIEGEL
REQUESTED BY...COLLIN EWING
TYPE OF REQUEST...WILDFIRE
.TAG 2621733.7/EKA
.DELDT 09/20/26
.EMAIL 2026.MP18.PLANS@FIRENET.GOV
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