433
AUUS46 KPDT 081225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON JUN 8 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SE 2-6 MPH. SW 7-12 MPH.
TRANSPORT WINDS S 3-7 MPH. SW 12-16 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 9 GOOD.
OUTLOOK FOR WED JUN 10 GOOD.
VENTILATION INDEX (CATEGORY) 45 (POOR). 461 (FAIR).
OUTLOOK FOR TUE JUN 9 1049 (GOOD).
OUTLOOK FOR WED JUN 10 1025 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 0-2 MPH. S 8-11 MPH.
TRANSPORT WINDS NW 2-5 MPH. S 13-18 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 9 GOOD.
OUTLOOK FOR WED JUN 10 FAIR.
VENTILATION INDEX (CATEGORY) 28 (POOR). 564 (FAIR).
OUTLOOK FOR TUE JUN 9 1050 (GOOD).
OUTLOOK FOR WED JUN 10 767 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS E 4-9 MPH. S 13-18 MPH.
TRANSPORT WINDS SE 6-11 MPH. S 20-24 MPH.
MIXING HEIGHT NEAR SURFACE. 10500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR TUE JUN 9 GOOD.
OUTLOOK FOR WED JUN 10 GOOD.
VENTILATION INDEX (CATEGORY) 179 (POOR). 1050 (GOOD).
OUTLOOK FOR TUE JUN 9 782 (GOOD).
OUTLOOK FOR WED JUN 10 587 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 3-7 MPH. SW 6-11 MPH.
TRANSPORT WINDS SE 6-11 MPH. SW 13-18 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 9 GOOD.
OUTLOOK FOR WED JUN 10 GOOD.
VENTILATION INDEX (CATEGORY) 103 (POOR). 669 (GOOD).
OUTLOOK FOR TUE JUN 9 948 (GOOD).
OUTLOOK FOR WED JUN 10 926 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 683 (GOOD)
ELLENSBURG 708 (GOOD)
GOLDENDALE 228 (POOR)
TRI-CITIES 542 (FAIR)
WALLA WALLA 479 (FAIR)
YAKIMA 536 (FAIR)
BEND 859 (GOOD)
PRINEVILLE 597 (FAIR)
ENTERPRISE 1050 (GOOD)
HERMISTON 335 (FAIR)
JOHN DAY 1050 (GOOD)
LA GRANDE 1050 (GOOD)
MADRAS 585 (FAIR)
MEACHAM 1050 (GOOD)
PENDLETON 499 (FAIR)
REDMOND 738 (GOOD)
SENECA 1050 (GOOD)
THE DALLES 220 (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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