049
AUUS46 KPDT 061325
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST FRI FEB 6 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 2-5 MPH. NW 2-5 MPH.
TRANSPORT WINDS SW 2-5 MPH. SW 2-4 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 7 POOR.
OUTLOOK FOR SUN FEB 8 POOR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 31 (POOR).
OUTLOOK FOR SAT FEB 7 29 (POOR).
OUTLOOK FOR SUN FEB 8 30 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 1-3 MPH. SE 2-3 MPH.
TRANSPORT WINDS W 1-3 MPH. SE 3-4 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 7 POOR.
OUTLOOK FOR SUN FEB 8 POOR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 28 (POOR).
OUTLOOK FOR SAT FEB 7 33 (POOR).
OUTLOOK FOR SUN FEB 8 27 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 4-8 MPH. S 4-8 MPH.
TRANSPORT WINDS S 8-11 MPH. S 7-12 MPH.
MIXING HEIGHT 4000 FT MSL. 4500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 7 FAIR.
OUTLOOK FOR SUN FEB 8 FAIR.
VENTILATION INDEX (CATEGORY) 84 (POOR). 160 (POOR).
OUTLOOK FOR SAT FEB 7 217 (POOR).
OUTLOOK FOR SUN FEB 8 238 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 2-5 MPH. NW 2-5 MPH.
TRANSPORT WINDS S 2-5 MPH. W 3-6 MPH.
MIXING HEIGHT NEAR SURFACE. NEAR SURFACE.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SAT FEB 7 FAIR.
OUTLOOK FOR SUN FEB 8 POOR.
VENTILATION INDEX (CATEGORY) 26 (POOR). 32 (POOR).
OUTLOOK FOR SAT FEB 7 83 (POOR).
OUTLOOK FOR SUN FEB 8 72 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 48 (POOR)
ELLENSBURG 29 (POOR)
GOLDENDALE 35 (POOR)
TRI-CITIES 27 (POOR)
WALLA WALLA 27 (POOR)
YAKIMA 25 (POOR)
BEND 73 (POOR)
PRINEVILLE 34 (POOR)
ENTERPRISE 43 (POOR)
HERMISTON 25 (POOR)
JOHN DAY 56 (POOR)
LA GRANDE 127 (POOR)
MADRAS 26 (POOR)
MEACHAM 25 (POOR)
PENDLETON 29 (POOR)
REDMOND 30 (POOR)
SENECA 92 (POOR)
THE DALLES 25 (POOR)
METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS. BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.
THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS. A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTPS://WWW.WEATHER.GOV/PDT/DSSBRIEFING
IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
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