684
FNUS76 KPDT 170047
FWSPDT
SPOT FORECAST FOR LYONS FERRY FIRE...SE WA TYPE 3 IMT TEAM 3
NATIONAL WEATHER SERVICE PENDLETON OR
547 PM PDT THU JUL 16 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 PDT ON JULY 17.
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS ***
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES ***
***CWR: CHANCE OF WETTING RAIN 0.10 OR GREATER ***
***VENTILATION INDEX IS DERIVED FROM TRANSPORT WIND
MULTIPLIED BY THE MIXING HEIGHT IN 100'S OF FT.
CATEGORIES ARE A GENERALIZED INDICATOR ONLY:
LOW (< 200), MODERATE (200-500), HIGH (500-700),
AND VERY HIGH (> 700). ***
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE
CONTACT OUR OFFICE AT (541) 276-8134.
..HEAT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING
DISCUSSION
HIGH PRESSURE CONTINUES TO DEVELOP OVER THE FIRE
AREA, LEADING TO CLEAR SKIES, WARMING TEMPERATURES, AND DRYING
CONDITIONS. WINDS INCREASE THROUGH FRIDAY MORNING, SUBSIDING
SLIGHTLY AFTER 1900. WINDS INCREASE OUT OF THE SOUTHWEST SATURDAY
MORNING, PEAKING BEFORE 1100 AND AGAIN BETWEEN 1500-1700. NO
LIGHTNING EXPECTED OVER THE FIRE AREA AS WINDS STAY OUT OF THE
WEST-SOUTHWEST.
FRIDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.1 PERCENT.
MAX TEMPERATURE.....95-98.
MIN HUMIDITY........12-17 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 MPH WITH GUSTS UP TO
20 MPH.
RIDGETOP WIND.......SOUTHWEST WINDS 7 TO 14 MPH WITH GUSTS UP TO
25 MPH.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 9 TO 17 MPH.
VENTILATION INDEX...MODERATE (220) INCREASING TO MODERATE (380) IN
THE AFTERNOON.
TIME (PDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............62 65 68 72 78 81 85 88 89 92 93 93
RH..............53 48 42 36 32 27 23 20 19 18 17 17
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW W W
20 FT WIND SPD..5 10 10 11 11 11 10 9 8 9 10 10
20 FT WIND GUST.14 16 17 18 19 18 16 15 15 15 16 16
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....61-64.
MAX HUMIDITY........46-51 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 8 MPH.
RIDGETOP WIND.......SOUTHWEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 14 MPH.
VENTILATION INDEX...MODERATE (240) DECREASING TO LOW (60)
OVERNIGHT.
SATURDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....96-99.
MIN HUMIDITY........9-14 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 MPH WITH GUSTS UP
TO 18 MPH.
RIDGETOP WIND.......SOUTHWEST WINDS 7 TO 14 MPH WITH GUSTS UP
TO 20 MPH.
MIXING HEIGHT.......6400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 13 TO 15 MPH.
VENTILATION INDEX...LOW (140) INCREASING TO HIGH (550) IN THE
AFTERNOON.
FORECASTER...CALLIHAN
REQUESTED BY...RYAN SCHARNHORST
TYPE OF REQUEST...WILDFIRE
.TAG 2617513.0/PDT
.DELDT 07/16/26
.FORMATTERVERSION 2.0.0
.EMAIL RYAN.SCHARNHORST@PULLMAN-WA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page