300
AUUS46 KPDT 051225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT FRI JUN 5 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 12-22 MPH. W 19-26 MPH.
TRANSPORT WINDS SW 12-21 MPH. W 22-28 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR SAT JUN 6 GOOD.
OUTLOOK FOR SUN JUN 7 GOOD.
VENTILATION INDEX (CATEGORY) 285 (POOR). 989 (GOOD).
OUTLOOK FOR SAT JUN 6 1050 (GOOD).
OUTLOOK FOR SUN JUN 7 853 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 4-8 MPH. W 14-19 MPH.
TRANSPORT WINDS W 5-9 MPH. W 18-25 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SAT JUN 6 GOOD.
OUTLOOK FOR SUN JUN 7 FAIR.
VENTILATION INDEX (CATEGORY) 142 (POOR). 1026 (GOOD).
OUTLOOK FOR SAT JUN 6 1050 (GOOD).
OUTLOOK FOR SUN JUN 7 471 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 1-3 MPH. NW 9-12 MPH.
TRANSPORT WINDS W 5-9 MPH. W 11-14 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 6 GOOD.
OUTLOOK FOR SUN JUN 7 GOOD.
VENTILATION INDEX (CATEGORY) 83 (POOR). 455 (FAIR).
OUTLOOK FOR SAT JUN 6 1034 (GOOD).
OUTLOOK FOR SUN JUN 7 597 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 7-22 MPH. W 13-22 MPH.
TRANSPORT WINDS SW 11-20 MPH. W 16-26 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR SAT JUN 6 GOOD.
OUTLOOK FOR SUN JUN 7 GOOD.
VENTILATION INDEX (CATEGORY) 234 (POOR). 773 (GOOD).
OUTLOOK FOR SAT JUN 6 1050 (GOOD).
OUTLOOK FOR SUN JUN 7 800 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 810 (GOOD)
ELLENSBURG 1050 (GOOD)
GOLDENDALE 1031 (GOOD)
TRI-CITIES 1050 (GOOD)
WALLA WALLA 844 (GOOD)
YAKIMA 880 (GOOD)
BEND 979 (GOOD)
PRINEVILLE 742 (GOOD)
ENTERPRISE 435 (FAIR)
HERMISTON 1035 (GOOD)
JOHN DAY 1050 (GOOD)
LA GRANDE 514 (FAIR)
MADRAS 880 (GOOD)
MEACHAM 471 (FAIR)
PENDLETON 761 (GOOD)
REDMOND 717 (GOOD)
SENECA 1050 (GOOD)
THE DALLES 1050 (GOOD)
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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