108
AUUS46 KPDT 151225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON JUN 15 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. W 4-7 MPH.
TRANSPORT WINDS S 3-6 MPH. NW 5-7 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR TUE JUN 16 GOOD.
OUTLOOK FOR WED JUN 17 FAIR.
VENTILATION INDEX (CATEGORY) 36 (POOR). 230 (POOR).
OUTLOOK FOR TUE JUN 16 1050 (GOOD).
OUTLOOK FOR WED JUN 17 442 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 1-4 MPH. SE 4-8 MPH.
TRANSPORT WINDS W 3-6 MPH. W 6-8 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 16 GOOD.
OUTLOOK FOR WED JUN 17 FAIR.
VENTILATION INDEX (CATEGORY) 33 (POOR). 304 (FAIR).
OUTLOOK FOR TUE JUN 16 1031 (GOOD).
OUTLOOK FOR WED JUN 17 364 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 0-1 MPH. N 4-8 MPH.
TRANSPORT WINDS N 4-8 MPH. N 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 16 GOOD.
OUTLOOK FOR WED JUN 17 GOOD.
VENTILATION INDEX (CATEGORY) 60 (POOR). 301 (FAIR).
OUTLOOK FOR TUE JUN 16 1050 (GOOD).
OUTLOOK FOR WED JUN 17 511 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 2-6 MPH. NW 4-8 MPH.
TRANSPORT WINDS SE 4-7 MPH. NW 4-7 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR TUE JUN 16 GOOD.
OUTLOOK FOR WED JUN 17 FAIR.
VENTILATION INDEX (CATEGORY) 31 (POOR). 240 (POOR).
OUTLOOK FOR TUE JUN 16 1050 (GOOD).
OUTLOOK FOR WED JUN 17 414 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 562 (FAIR)
ELLENSBURG 804 (GOOD)
GOLDENDALE 403 (FAIR)
TRI-CITIES 292 (POOR)
WALLA WALLA 173 (POOR)
YAKIMA 369 (FAIR)
BEND 244 (POOR)
PRINEVILLE 336 (FAIR)
ENTERPRISE 295 (POOR)
HERMISTON 194 (POOR)
JOHN DAY 352 (FAIR)
LA GRANDE 323 (FAIR)
MADRAS 270 (POOR)
MEACHAM 260 (POOR)
PENDLETON 292 (POOR)
REDMOND 278 (POOR)
SENECA 400 (FAIR)
THE DALLES 196 (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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