144
AUUS46 KPDT 101225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON AUG 10 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 6-15 MPH. W 7-13 MPH.
TRANSPORT WINDS SW 9-16 MPH. W 9-13 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR TUE AUG 11 FAIR.
OUTLOOK FOR WED AUG 12 FAIR.
VENTILATION INDEX (CATEGORY) 135 (POOR). 507 (FAIR).
OUTLOOK FOR TUE AUG 11 408 (FAIR).
OUTLOOK FOR WED AUG 12 372 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 1-7 MPH. NW 3-7 MPH.
TRANSPORT WINDS W 5-10 MPH. W 6-10 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE AUG 11 FAIR.
OUTLOOK FOR WED AUG 12 POOR.
VENTILATION INDEX (CATEGORY) 62 (POOR). 383 (FAIR).
OUTLOOK FOR TUE AUG 11 304 (FAIR).
OUTLOOK FOR WED AUG 12 299 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 1-3 MPH. NW 8-11 MPH.
TRANSPORT WINDS W 4-7 MPH. W 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR TUE AUG 11 GOOD.
OUTLOOK FOR WED AUG 12 GOOD.
VENTILATION INDEX (CATEGORY) 60 (POOR). 477 (FAIR).
OUTLOOK FOR TUE AUG 11 456 (FAIR).
OUTLOOK FOR WED AUG 12 359 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 5-15 MPH. W 8-11 MPH.
TRANSPORT WINDS SW 10-18 MPH. W 11-15 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR TUE AUG 11 FAIR.
OUTLOOK FOR WED AUG 12 FAIR.
VENTILATION INDEX (CATEGORY) 157 (POOR). 543 (FAIR).
OUTLOOK FOR TUE AUG 11 444 (FAIR).
OUTLOOK FOR WED AUG 12 376 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 496 (FAIR)
ELLENSBURG 873 (GOOD)
GOLDENDALE 490 (FAIR)
TRI-CITIES 470 (FAIR)
WALLA WALLA 515 (FAIR)
YAKIMA 524 (FAIR)
BEND 408 (FAIR)
PRINEVILLE 454 (FAIR)
ENTERPRISE 510 (FAIR)
HERMISTON 473 (FAIR)
JOHN DAY 503 (FAIR)
LA GRANDE 586 (FAIR)
MADRAS 431 (FAIR)
MEACHAM 488 (FAIR)
PENDLETON 567 (FAIR)
REDMOND 436 (FAIR)
SENECA 627 (GOOD)
THE DALLES 536 (FAIR)
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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