225
FNUS76 KMFR 182339
FWSMFR
SPOT FORECAST FOR TENNANT FIRE...USFS
NATIONAL WEATHER SERVICE MEDFORD OR
439 PM PDT MON MAY 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY AND WARM AIR WILL REMAIN OVER THE FIRE LOCATION THROUGH
THE WEEK WITH SOME LIGHT NORTHERLY AFTERNOON BREEZES. HIGH
PRESSURE WILL CONTINUE TO BUILD INTO WEDNESDAY AND TEMPERATURES
WILL TREND WARMER BY A FEW DEGREES. OVERALL, FIRE WEATHER RISK
REMAINS LOW THROUGH THE NEXT FEW DAYS DUE TO THE LIGHTER WINDS.
TUESDAY
SKY/WEATHER.........SUNNY.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....71-75.
MIN HUMIDITY........17-22 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTH AROUND 2 MPH.
WIND (20 FT)........NORTH WINDS UP 2 TO 3 MPH EARLY IN THE MORNING
BECOMING 5 TO 6 MPH IN THE AFTERNOON.
MIXING HEIGHT.......7800-8300 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 6 MPH SHIFTING TO THE
NORTHWEST 8 TO 10 MPH LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR CLR CLR CLR MCR MCR CLR CLR CLR MCR MCR MCR
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............35 39 44 49 57 61 64 66 67 70 71 71
RH..............72 62 51 40 31 26 22 20 19 19 18 19
20 FT WIND DIR..N N N NE NE NE NE N N N N N
20 FT WIND SPD..0 0 0 2 3 3 4 4 5 6 6 6
20 FT WIND GUST.2 2 2 3 4 6 6 8 10 10 11 13
EYE LVL WND DIR.N N N NE NE NE NE N N N N N
EYE LVL WND SPD.0 0 0 0 1 1 1 1 2 2 2 2
EYE LVL WND GST.1 1 1 2 2 2 2 3 4 4 4 5
MIX HGT (KFT)...0.5 0.5 2.2 2.2 2.2 6.2 6.2 6.2 7.8 8.3 8.3 5.7
TRANSP WIND DIR.NE NE NE NE NE N N N NW NW NW NW
TRANSP WIND SPD.6 6 6 6 6 6 6 6 8 8 8 10
TUESDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR WITH INCREASING CLOUDS THROUGH
THE NIGHT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....37-40.
MAX HUMIDITY........68-72 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS AROUND 2 TO 3 MPH EARLY IN THE
EVENING BECOMING LIGHT.
WIND (20 FT)........NORTH WINDS AROUND 4 TO 6 MPH EARLY IN THE
EVENING BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
CWR.................0 PERCENT.
TIME (PDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MCR MCR MCR MCR MCR MC MC MC PC PC PC MC
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............72 70 67 58 54 50 48 46 44 41 40 40
RH..............20 20 27 35 43 49 54 58 63 65 67 69
20 FT WIND DIR..N N NW NW NW W W W W W W N
20 FT WIND SPD..6 6 4 4 4 1 1 1 1 1 1 0
20 FT WIND GUST.13 13 12 12 12 5 5 5 4 4 4 2
EYE LVL WND DIR.N N NW NW NW W W W W W W N
EYE LVL WND SPD.2 2 1 1 1 0 0 0 0 0 0 0
EYE LVL WND GST.5 5 5 5 5 2 2 2 2 2 2 1
MIX HGT (KFT)...5.7 5.7 0.6 0.6 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW NW W
TRANSP WIND SPD.10 10 10 10 10 7 7 7 7 7 7 5
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY, THEN BECOMING
SUNNY.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....AROUND 77-80.
MIN HUMIDITY........20-23 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTHWEST AROUND 2 MPH
LATE IN THE AFTERNOON.
WIND (20 FT)........NORTHWEST WINDS 2 TO 3 MPH, THEN BECOMING
NORTHWEST 5 TO 6 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......7800 FT AGL.
TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE NORTH EARLY
IN THE MORNING.
CWR.................0 PERCENT.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC MC MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
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............40 43 49 55 60 65 69 71 73 75 76 76
RH..............68 61 51 43 36 30 26 24 23 21 21 21
20 FT WIND DIR..N N N N N N N N NW NW NW NW
20 FT WIND SPD..0 0 0 0 0 3 3 3 5 5 5 6
20 FT WIND GUST.2 2 2 2 2 6 6 6 10 10 10 13
EYE LVL WND DIR.N N N N N N N N NW NW NW NW
EYE LVL WND SPD.0 0 0 0 0 1 1 1 2 2 2 2
EYE LVL WND GST.1 1 1 1 1 2 2 2 4 4 4 5
MIX HGT (KFT)...0.4 0.4 1.1 1.1 1.1 4.8 4.8 4.8 7.8 7.8 7.8 7.6
TRANSP WIND DIR.W W N N N N N N NW NW NW NW
TRANSP WIND SPD.5 5 6 6 6 6 6 6 9 9 9 10
FORECASTER...SMITH
REQUESTED BY...SARAH LEE
TYPE OF REQUEST...WILDFIRE
.TAG 2613979.0/MFR
.DELDT 05/18/26
.FORMATTERVERSION 2.0.0
.EMAIL SARAH.LEE2@USDA.GOV
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