235
FNUS76 KPQR 271736
FWSPQR
SPOT FORECAST FOR EXERCISE MARSHALL FIRE...BENTON COUNTY EOC
NATIONAL WEATHER SERVICE PORTLAND OR
1036 AM PDT WED MAY 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 PDT ON MAY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NORTH WINDS TODAY INCREASING TO UP TO 8 MPH THIS AFTERNOON,
DECREASING BELOW 5 MPH AFTER MIDNIGHT. WINDS SHIFT WESTERLY THURSDAY
MORNING, INCREASING TO UP TO 8 MPH IN THE AFTERNOON. MODERATE DAYTIME RH
IN THE 40S WITH GOOD OVERNIGHT RECOVERIES IN THE 80S. THERE'S A 15-20%
CHANCE OF THUNDERSTORMS BETWEEN 1500-2000 THURSDAY. STRONG SHOWERS OR
THUNDERSTORMS COLD PRODUCE HEAVY RAINFALL, GUSTY AND ERRATIC WINDS,
SMALL HAIL, AND LIGHTNING.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................1 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING NORTH 5 TO 7 MPH LATE IN
THE MORNING.
MIXING HEIGHT.......4300 FT AGL.
TRANSPORT WINDS.....NORTH 14 TO 18 MPH.
TIME (PDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 16 18 12 20 14 2 7
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
CHC OF LTNG (%).0 0 0 0 0 0 0 0
TEMP............60 63 67 70 74 76 77 78
RH..............70 64 60 55 52 48 46 46
20 FT WIND DIR..N N N N N N N N
20 FT WIND SPD..3 5 5 6 6 6 7 7
20 FT WIND GUST.7 10 11 12 13 14 14 14
MIX HGT (KFT)...2.9 3.3 3.6 3.8 3.9 4.3 4.3 4.0
TRANSP WIND DIR.N N N N N N N N
TRANSP WIND SPD.14 15 17 18 18 18 18 18
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................1 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........88 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 5 TO 7 MPH IN THE EVENING BECOMING
LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTH 8 TO 17 MPH SHIFTING TO THE NORTHWEST 5
TO 7 MPH OVERNIGHT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........9 10 11 8 11 8 21 26 23 17 10 16
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............77 75 72 66 63 60 58 56 55 53 52 52
RH..............47 50 56 61 68 72 76 79 81 83 86 88
20 FT WIND DIR..N N N N NW N N NW N N N NW
20 FT WIND SPD..7 7 6 6 6 5 4 4 3 2 2 2
20 FT WIND GUST.14 13 12 10 10 7 6 6 6 5 4 4
MIX HGT (KFT)...3.3 1.3 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.N N N N N N N NW N N NW NW
TRANSP WIND SPD.17 15 13 12 9 8 8 8 7 6 6 5
THURSDAY
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY THEN
BECOMING PARTLY CLOUDY THEN BECOMING PARTLY
SUNNY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................3 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........53 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING WEST 5 TO 10 MPH WITH
GUSTS TO AROUND 18 MPH LATE IN THE AFTERNOON.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 6 MPH SHIFTING TO THE WEST 3 TO
5 MPH EARLY IN THE MORNING, THEN INCREASING TO
6 TO 15 MPH IN THE LATE MORNING AND AFTERNOON.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........32 25 21 16 21 29 26 39 46 46 40 67
WEATHER COV..... SCH
WEATHER TYPE.... RW
TSTM COV........ SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 20
TEMP............51 53 56 60 66 69 73 75 76 77 75 73
RH..............88 87 80 73 67 62 57 54 53 53 53 53
20 FT WIND DIR..N W SW S W W W W W W W W
20 FT WIND SPD..2 2 1 1 2 2 3 4 5 6 8 10
20 FT WIND GUST.4 4 2 4 4 6 6 10 10 13 16 18
MIX HGT (KFT)...0.4 0.4 0.7 1.4 2.0 2.4 2.8 3.0 3.0 2.6 2.0 1.6
TRANSP WIND DIR.N NW W NW NW NW W W W W W W
TRANSP WIND SPD.6 5 3 5 6 6 9 9 10 12 14 15
FORECASTER...HEC
REQUESTED BY...BENTON COUNTY PLANNING SECTION
TYPE OF REQUEST...WILDFIRE
.TAG 2614553.0/PQR
.DELDT 05/27/26
.FORMATTERVERSION 2.0.0
.EMAIL SIERRA.ANDERSON@CORVALLISOREGON.GOV
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