094
AUUS46 KPDT 121225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT FRI JUN 12 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 4-9 MPH. NW 6-11 MPH.
TRANSPORT WINDS SW 5-9 MPH. NW 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
VENTILATION INDEX (CATEGORY) 109 (POOR). 532 (FAIR).
OUTLOOK FOR SAT JUN 13 869 (GOOD).
OUTLOOK FOR SUN JUN 14 767 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 3-7 MPH. NW 4-7 MPH.
TRANSPORT WINDS NW 5-9 MPH. NW 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
OUTLOOK FOR SUN JUN 14 FAIR.
VENTILATION INDEX (CATEGORY) 111 (POOR). 591 (FAIR).
OUTLOOK FOR SAT JUN 13 877 (GOOD).
OUTLOOK FOR SUN JUN 14 766 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 1-3 MPH. NW 11-16 MPH.
TRANSPORT WINDS W 5-9 MPH. NW 13-17 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SAT JUN 13 GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
VENTILATION INDEX (CATEGORY) 101 (POOR). 647 (GOOD).
OUTLOOK FOR SAT JUN 13 844 (GOOD).
OUTLOOK FOR SUN JUN 14 509 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 5-10 MPH. NW 8-11 MPH.
TRANSPORT WINDS SW 7-12 MPH. NW 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
VENTILATION INDEX (CATEGORY) 140 (POOR). 585 (FAIR).
OUTLOOK FOR SAT JUN 13 704 (GOOD).
OUTLOOK FOR SUN JUN 14 563 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 635 (GOOD)
ELLENSBURG 943 (GOOD)
GOLDENDALE 419 (FAIR)
TRI-CITIES 543 (FAIR)
WALLA WALLA 491 (FAIR)
YAKIMA 737 (GOOD)
BEND 542 (FAIR)
PRINEVILLE 551 (FAIR)
ENTERPRISE 792 (GOOD)
HERMISTON 449 (FAIR)
JOHN DAY 713 (GOOD)
LA GRANDE 747 (GOOD)
MADRAS 509 (FAIR)
MEACHAM 563 (FAIR)
PENDLETON 584 (FAIR)
REDMOND 523 (FAIR)
SENECA 746 (GOOD)
THE DALLES 607 (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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