586
AUUS46 KPDT 131225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT JUN 13 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS N 3-8 MPH. N 12-16 MPH.
TRANSPORT WINDS N 5-10 MPH. N 15-18 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
OUTLOOK FOR MON JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 85 (POOR). 894 (GOOD).
OUTLOOK FOR SUN JUN 14 819 (GOOD).
OUTLOOK FOR MON JUN 15 402 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 3-7 MPH. NE 8-11 MPH.
TRANSPORT WINDS N 5-9 MPH. NE 11-15 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUN 14 FAIR.
OUTLOOK FOR MON JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 120 (POOR). 800 (GOOD).
OUTLOOK FOR SUN JUN 14 686 (GOOD).
OUTLOOK FOR MON JUN 15 370 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 1-3 MPH. N 9-16 MPH.
TRANSPORT WINDS N 6-8 MPH. N 14-17 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
OUTLOOK FOR MON JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 116 (POOR). 770 (GOOD).
OUTLOOK FOR SUN JUN 14 613 (GOOD).
OUTLOOK FOR MON JUN 15 296 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS E 1-4 MPH. N 12-18 MPH.
TRANSPORT WINDS E 4-9 MPH. N 13-17 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUN 14 GOOD.
OUTLOOK FOR MON JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 67 (POOR). 713 (GOOD).
OUTLOOK FOR SUN JUN 14 677 (GOOD).
OUTLOOK FOR MON JUN 15 336 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 487 (FAIR)
ELLENSBURG 597 (FAIR)
GOLDENDALE 911 (GOOD)
TRI-CITIES 934 (GOOD)
WALLA WALLA 718 (GOOD)
YAKIMA 760 (GOOD)
BEND 670 (GOOD)
PRINEVILLE 775 (GOOD)
ENTERPRISE 551 (FAIR)
HERMISTON 877 (GOOD)
JOHN DAY 656 (GOOD)
LA GRANDE 712 (GOOD)
MADRAS 992 (GOOD)
MEACHAM 507 (FAIR)
PENDLETON 822 (GOOD)
REDMOND 808 (GOOD)
SENECA 603 (GOOD)
THE DALLES 956 (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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