907
FNUS76 KPQR 161707
FWSPQR
SPOT FORECAST FOR ANKENY PILES...USFWS
NATIONAL WEATHER SERVICE PORTLAND OR
907 AM PST TUE DEC 16 2025
FORECAST IS BASED ON IGNITION TIME OF 1000 PST ON DECEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A BRIEF LULL IN THE ACTIVE WEATHER TODAY BEFORE
A STRONG WEATHER SYSTEM MOVES ONSHORE THROUGH TONIGHT BRINGING
GUSTY WINDS AND PERIODS OF HEAVY RAIN. THUNDERSTORM CHANCES
INCREASE OVERNIGHT, WITH ERRATIC GUSTS POSSIBLE NEARBY. MAXIMUM
GUSTS MOST LIKELY AROUND 40-45 MPH, HOWEVER GUSTS IN EXCESS OF 50
MPH CANNOT BE RULED OUT. CALMER WEATHER RETURNS WEDNESDAY AHEAD OF
ANOTHER STRONG SYSTEM WITH HEAVY RAIN AND WIND ON THURSDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN LATE IN
THE MORNING, THEN CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
CWR.................2 PERCENT INCREASING TO 89 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.20 PERCENT.
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........90 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 8 MPH. GUSTS UP TO 21 MPH LATE
IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......1600 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 18 MPH.
TIME (PST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........86 89 89 89 84 79 82 84
WEATHER COV.....SCH SCH SCH SCH CHC CHC SCH CHC
WEATHER TYPE....RN RN RN RN RN RN RW RW
TSTM COV........ SCH SCH
CWR.............0 0 0 0 0 0 90 90
CHC OF LTNG (%).0 0 0 10 10 10 20 20
TEMP............55 56 57 57 58 58 58 58
RH..............98 96 92 93 91 89 92 91
20 FT WIND DIR..S S S S S S S S
20 FT WIND SPD..7 8 7 8 8 8 8 8
20 FT WIND GUST.14 14 14 14 14 14 14 17
MIX HGT (KFT)...1.2 1.3 1.5 1.5 1.6 1.3 1.0 0.8
TRANSP WIND DIR.S S S S S S S S
TRANSP WIND SPD.17 17 18 16 17 15 15 15
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS IN THE EVENING.
SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE
NIGHT. RAIN OVERNIGHT.
CWR.................89 PERCENT DECREASING TO 6 PERCENT AFTER 3 AM.
CHANCE OF LIGHTNING.20 PERCENT.
MIN TEMPERATURE.....AROUND 43.
MAX HUMIDITY........95 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 14 MPH WITH GUSTS TO AROUND
26 MPH SHIFTING TO THE SOUTHWEST AROUND 13 MPH
WITH GUSTS TO AROUND 25 MPH OVERNIGHT, THEN
SHIFTING TO THE WEST WITH GUSTS TO AROUND 24
MPH OVERNIGHT SHIFTING TO THE SOUTHWEST 6 TO 7
MPH WITH GUSTS TO AROUND 16 MPH AFTER 3 AM.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE EVENING. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER
3 AM.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 23 MPH INCREASING TO WEST 28 TO
37 MPH OVERNIGHT, THEN DECREASING TO 15 TO 22
MPH AFTER 3 AM.
TIME (PST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........89 89 89 99 98 100 95 85 79 63 63 75
WEATHER COV.....CHC LKY DEF DEF DEF DEF DEF LKY CHC SCH CHC LKY
WEATHER TYPE....RW RW RW RW RN RN RN RN RN RN RW RW
TSTM COV........SCH SCH SCH SCH SCH SCH
CWR.............90 90 90 90 90 90 90 90 90 90 10 10
CHC OF LTNG (%).20 20 20 20 10 10 10 10 10 10 20 20
TEMP............58 58 57 57 57 56 55 52 49 47 45 45
RH..............92 94 96 93 93 94 91 89 86 87 86 87
20 FT WIND DIR..S S S S S SW SW W W W SW S
20 FT WIND SPD..10 11 12 13 14 14 13 12 11 8 7 6
20 FT WIND GUST.18 20 23 25 26 26 25 24 21 18 16 14
MIX HGT (KFT)...0.6 0.6 0.5 0.5 0.5 0.6 0.6 2.3 2.6 0.8 0.6 0.5
TRANSP WIND DIR.S S SW SW SW SW SW W W W W W
TRANSP WIND SPD.17 16 18 22 22 23 28 37 31 22 18 15
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING PARTLY CLOUDY THEN
BECOMING PARTLY SUNNY. CHANCE OF RAIN SHOWERS
IN THE MORNING. SLIGHT CHANCE OF THUNDERSTORMS
THROUGH THE DAY. RAIN SHOWERS LIKELY IN THE
AFTERNOON.
CWR.................6 PERCENT INCREASING TO 16 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF LIGHTNING.16 PERCENT.
MAX TEMPERATURE.....AROUND 49.
MIN HUMIDITY........81 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE AFTERNOON.
MIXING HEIGHT.......3500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH SHIFTING TO THE SOUTH 10
TO 13 MPH LATE IN THE AFTERNOON.
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........56 63 57 45 56 65 63 76 72 78 79 79
WEATHER COV.....CHC CHC CHC SCH SCH CHC CHC LKY CHC SCH SCH SCH
WEATHER TYPE....RW RN RN RN RN RN RN RW RW RW RN RN
TSTM COV........SCH SCH SCH SCH
CWR.............10 10 10 10 10 10 10 10 10 10 20 20
CHC OF LTNG (%).20 10 10 10 10 10 10 20 20 20 0 0
TEMP............44 43 43 44 46 47 48 48 48 49 48 47
RH..............87 89 90 91 88 86 83 82 81 80 80 86
20 FT WIND DIR..SW SW SW S SW S SW SW SW SW S S
20 FT WIND SPD..6 6 6 6 6 6 6 6 6 6 5 5
20 FT WIND GUST.13 12 12 12 12 12 12 12 11 10 10 10
MIX HGT (KFT)...0.6 0.6 0.7 1.0 2.2 2.4 3.5 3.3 2.2 1.4 0.9 0.6
TRANSP WIND DIR.W SW SW SW SW SW SW SW SW SW S S
TRANSP WIND SPD.13 12 12 15 17 20 20 18 16 13 13 10
FORECASTER...PICARD
REQUESTED BY...SILAS BAFFA
TYPE OF REQUEST...PRESCRIBED
.TAG 2527809.0/PQR
.DELDT 12/16/25
.FORMATTERVERSION 2.0.0
.EMAIL SILAS_BAFFA@FWS.GOV
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