278
FNUS76 KPQR 101541
FWSPQR
SPOT FORECAST FOR TUALATIN PILE...USFWS
NATIONAL WEATHER SERVICE PORTLAND OR
841 AM PDT TUE MAR 10 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON MARCH 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
MOSTLY DRY THIS MORNING WITH JUST A SLIGHT CHANCE OF
SHOWERS. RAIN SHOWER COVERAGE WILL INCREASE QUICKLY AROUND 12-2 PM
THIS AFTERNOON, CONTINUING INTO THIS EVENING. WINDS WILL BE FROM
THE SOUTH LESS THAN 5 MPH THIS MORNING, INCREASING TO 5-10 MPH
THIS AFTERNOON. AN ATMOSPHERIC RIVER BRINGS MODERATE TO HEAVY RAIN
OVER THE BURN SITE LATE TONIGHT INTO WEDNESDAY WITH BREEZY WINDS.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE MORNING,
THEN RAIN IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 42 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.9 PERCENT.
MAX TEMPERATURE.....AROUND 49.
MIN HUMIDITY........70-75 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHERLY WINDS BELOW 5 MPH BECOMING SOUTHWEST 5
TO 8 MPH LATE IN THE MORNING.
MIXING HEIGHT.......3100 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 17 MPH SHIFTING TO THE SOUTHWEST 18
TO 21 MPH AFTER 11 AM.
TIME (PDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 79 72 78 83 92 87 81 82
WEATHER COV..... SCH SCH CHC LKY DEF DEF LKY LKY
WEATHER TYPE.... RS RN RN RN RN RN RN RN
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 40
CHC OF LTNG (%).0 0 10 10 10 10 10 10 10
TEMP............37 40 43 44 46 47 47 47 48
RH..............92 89 83 78 76 76 77 78 78
20 FT WIND DIR..S S S S S SW SW SW SW
20 FT WIND SPD..3 4 5 6 7 8 8 8 7
20 FT WIND GUST.6 8 10 13 14 14 14 14 14
MIX HGT (KFT)...1.0 1.4 1.9 2.4 2.7 3.1 3.1 3.1 2.9
TRANSP WIND DIR.S S S S S SW SW SW SW
TRANSP WIND SPD.8 9 10 15 16 17 20 21 18
TONIGHT
SKY/WEATHER.........CLOUDY. RAIN.
CWR.................42 PERCENT INCREASING TO 73 PERCENT EARLY IN
THE MORNING.
CHANCE OF LIGHTNING.9 PERCENT.
MIN TEMPERATURE.....AROUND 41.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH TO SOUTHWEST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 16 MPH.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........88 95 90 93 92 84 88 89 95 98 99 97
WEATHER COV.....DEF DEF DEF DEF DEF LKY LKY DEF DEF DEF DEF DEF
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............40 40 40 40 40 40 40 40 40 40 40 70
CHC OF LTNG (%).10 10 10 10 10 0 0 0 0 0 0 0
TEMP............47 45 44 43 43 43 43 43 43 42 43 43
RH..............83 87 89 90 93 93 95 95 95 96 96 95
20 FT WIND DIR..SW SW S S S S S S S S S S
20 FT WIND SPD..6 6 6 6 5 5 5 5 5 6 6 6
20 FT WIND GUST.13 13 11 12 11 11 11 11 11 11 11 11
MIX HGT (KFT)...1.3 1.0 1.0 0.9 0.7 0.9 0.8 1.1 1.3 1.2 0.9 1.2
TRANSP WIND DIR.SW SW SW SW S S S S S S S S
TRANSP WIND SPD.16 16 16 16 15 15 16 16 15 15 15 15
WEDNESDAY
SKY/WEATHER.........CLOUDY. RAIN.
CWR.................73 PERCENT INCREASING TO 96 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.3 PERCENT.
MAX TEMPERATURE.....AROUND 54.
MIN HUMIDITY........AROUND 90 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS 7 TO 12 MPH. GUSTS UP TO 28 MPH.
MIXING HEIGHT.......3600 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 23 MPH SHIFTING TO THE SOUTHWEST 24
TO 26 MPH IN THE AFTERNOON.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........94 93 96 97 98 92 96 100 98 96 91 100
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN RN
TSTM COV........
CWR.............70 70 70 70 70 70 70 70 70 70 70 100
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............43 44 44 45 45 46 49 49 52 52 52 53
RH..............94 94 96 94 97 97 94 94 92 94 90 91
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..6 6 7 8 8 10 11 12 12 12 11 11
20 FT WIND GUST.12 13 14 16 17 18 21 21 21 22 21 21
MIX HGT (KFT)...1.2 1.0 2.0 2.1 2.6 2.7 3.0 3.3 3.4 3.4 3.5 3.6
TRANSP WIND DIR.S S S S S S S SW SW SW SW SW
TRANSP WIND SPD.15 17 21 21 22 23 26 25 24 25 25 26
FORECASTER...HEC
REQUESTED BY...SILAS BAFFA
TYPE OF REQUEST...PRESCRIBED
.TAG 2605320.0/PQR
.DELDT 03/10/26
.FORMATTERVERSION 2.0.0
.EMAIL SILAS_BAFFA@FWS.GOV
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