615
FNUS76 KPQR 201600
FWSPQR
SPOT FORECAST FOR THOMPSON...WA DNR
NATIONAL WEATHER SERVICE PORTLAND OR
900 AM PDT SAT APR 20 2024
FORECAST IS BASED ON FORECAST START TIME OF 0900 PDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WEAK COOLER FRONT WILL MOVE OVER THE AREA TODAY
CAUSING WINDS TO SHIFT TO THE SOUTH THROUGH THE AFTERNOON. THE
WIND SHIFT WILL OCCUR BETWEEN 1300 TO 1500, THEN BECOME WESTERLY
AFTER 1900. WIND SPEEDS ARE NEAR THEIR PEAK AT 900 FT IN ELEVATION,
BUT WILL EXCEED 20 MPH THROUGH 1800 UNTIL THEY SHIFT TO THE WEST.
THIS DIRECTIONAL SHIFT COMBINED WITH UPSLOPE DIURNAL WINDS WILL
CAUSE WINDS TO LOCALLY INCREASE UP TO 28 MPH (REFLECTED IN THE
BELOW FORECAST). DUE TO THE INCOMING ONSHORE FLOW, DAYTIME MINIMUM
HUMIDITY WILL BE HIGHER THAN PREVIOUS DAYS AND TEMPERATURES WILL
BE COOLER WITH INCOMING CLOUD COVER. PRECIPITATION IS LIKELY (50%
CHANCE), HOWEVER ACCUMULATION WILL BE MINIMAL AT BEST THUS THE LOW
CWR. THE FRONT WILL SLOWLY EXIT THE AREA AROUND SUNDAY MORNING
THOUGH LINGERING VERY LIGHT PRECIPITATION MAY PERSIST. DIURNALLY
DRIVEN WINDS WILL ONCE AGAIN OCCUR IN THE AFTERNOON THOUGH LESS
INTENSELY DUE TO MORE CLOUD COVER.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY THEN BECOMING MOSTLY CLOUDY AFTER 1100.
LIGHT RAIN IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHEAST WINDS 10 TO 12 MPH WITH GUSTS UP TO 20 MPH
SHIFTING TO THE SOUTH IN THE AFTERNOON. UPSLOPE
AFTERNOON GUSTS UP TO 26 MPH.
RIDGETOP...........EAST WINDS 10 TO 12 MPH WITH GUSTS TO 21 MPH SHIFTING
BECOMING UPSLOPE (SOUTHWESTERLY) 13 TO 15 MPH WITH GUSTS
UP TO 28 MPH IN THE AFTERNOON.
MIXING HEIGHT.......5600 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 19 MPH.
HAINES INDEX........3 (VERY LOW INSTABILITY).
HAINES INDEX (MID)..5 (MODERATE INSTABILITY DUE TO THE FRONT).
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. LIGHT RAIN
LIKELY IN THE EVENING. CHANCE OF RAIN SHOWERS OVERNIGHT.
CWR.................7 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 38.
MAX HUMIDITY........94 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH.
RIDGETOP...........WEST WINDS 8 TO 10 MPH WITH GUSTS UP TO 18 MPH BECOMING
WEST 4 TO 9 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....WEST AROUND 11 MPH.
HAINES INDEX........3 (VERY LOW INSTABILITY).
HAINES INDEX (MID)..3 (VERY LOW INSTABILITY).
SUNDAY
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF RAIN SHOWERS IN THE MORNING BEFORE
1300.
CWR.................1 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 55.
MIN HUMIDITY........55 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS AROUND 5 MPH SHIFTING TO THE WEST
IN THE AFTERNOON.
RIDGETOP...........WEST WINDS 6 TO 9 MPH BECOMING NORTHWEST WINDS 10 TO 12 MPH
WITH GUSTS UP TO 19 MPH. SLIGHT UPSLOPE COMPONENT AFTER 1400.
MIXING HEIGHT.......4900 FT AGL.
TRANSPORT WINDS.....WEST AROUND 8 MPH.
HAINES INDEX........4 (LOW INSTABILITY).
HAINES INDEX (MID)..3 (VERY LOW INSTABILITY).
FORECASTER...MUESSLE
REQUESTED BY...NATE JURGENSEN
TYPE OF REQUEST...WILDFIRE
.TAG 2411505.0/PQR
.DELDT 04/20/24
.FORMATTERVERSION 2.0.0
.EMAIL PCDISPATCH@DNR.WA.GOV
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