598
FNUS76 KEKA 291217
FWSEKA
SPOT FORECAST FOR KNOB...USFS
NATIONAL WEATHER SERVICE EUREKA CA
517 AM PDT SAT AUG 29 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
A CALM MORNING WILL GIVE WAY TO A BREEZY AFTERNOON WITH
NORTHERLY GENERAL WINDS MIXING DOWN TO THE BURN SITE AS THE ATMOSPHERE
IS UNSTABLE. DAYTIME TEMPERATURES WILL BE COOLER AROUND 80F AND RH
VALUES ARE EXPECTED TO BOTTOM OUT NEAR 30%. DUE TO THE ALIGNMENT OF THE
BURN SITE WITH THE SOUTH FORK OF THE TRINITY AND THE GENERAL FLOW, WIND
GUSTS COULD GET AS HIGH AS 15-20MPH DURING THE AFTERNOON. OVERNIGHT RH
VALUES WILL BUILD TO 75% OR SO, EVEN WITH THE ELEVATED TERRAIN. CALM WINDS
ARE EXPECTED OVERNIGHT.
TODAY
SKY/WEATHER.........SUNNY THEN BECOMING PARTLY CLOUDY THEN BECOMING
SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........VARIABLE 4 TO 8 MPH...BECOMING NORTHWEST 9 TO
12 MPH LATE IN THE MORNING. GUSTS UP TO 20MPH.
MIXING HEIGHT.......1700-2400 FT AGL INCREASING TO 3400-3800 FT AGL
EARLY IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 7 TO 12 MPH.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 24 27 27 27 9 9 9 6 6 6 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............49 48 50 54 61 67 72 77 79 80 80 78
RH..............82 84 84 68 57 48 39 33 31 31 32 35
20 FT WIND DIR..N N N N N N N N NW NW NW NW
20 FT WIND SPD..3 3 3 3 3 9 9 9 12 12 12 12
20 FT WIND GUST.6 6 7 7 7 14 14 14 20 20 20 20
MIX HGT (KFT)...1.7 1.7 1.7 1.7 1.7 2.4 2.4 2.4 3.8 3.8 3.8 3.4
TRANSP WIND DIR.N N N N N NW NW NW NW NW NW NW
TRANSP WIND SPD.7 7 7 7 7 12 12 12 12 12 12 12
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........75-80 PERCENT.
WIND (20 FT)........NORTH WINDS 5-12 MPH UNTIL SUNDOWN
...BECOMING VARIABLE 2-5MPH.
MIXING HEIGHT.......1800-3400 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 12 MPH EAST AROUND 3 MPH EARLY
IN THE MORNING.
TIME (PDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........23 13 8 8
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............76 62 58 54
RH..............40 56 66 73
20 FT WIND......NW 12G20 NW 6G14 N 5G7 N 2G5
MIX HGT (FT)....3400 2300 1800 2000
TRANSPORT WIND..NW 12 NW 12 N 6 N 6
SUNDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........24-27 PERCENT.
WIND (20 FT)........VARIABLE 2 TO 5 MPH...BECOMING NORTH 5 TO 9 MPH
LATE IN THE MORNING.
MIXING HEIGHT.......2000-2700 FT AGL INCREASING TO 4100-6000 FT AGL
EARLY IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 3 MPH WEST AROUND 9 MPH LATE IN THE
MORNING, THEN NORTHWEST AROUND 7 MPH LATE IN THE
AFTERNOON.
TIME (PDT) 6 AM 9 AM NOON 3 PM
SKY (%).........11 7 0 2
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............51 59 81 88
RH..............82 60 31 24
20 FT WIND......NE 1G3 NE 1G3 N 5G7 NW 9G15
MIX HGT (FT)....2000 2000 2700 6000
TRANSPORT WIND..E 3 E 3 W 9 W 9
FORECASTER...SCHMIEGEL
REQUESTED BY...GEOFFREY PHELAN
TYPE OF REQUEST...WILDFIRE
.TAG 2620865.0/EKA
.DELDT 08/29/26
.EMAIL SUSAN.BROWN@USDA.GOV,GEOFFREY.PHELAN@USDA.GOV
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