563
AUUS46 KPDT 101225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT FRI JUL 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 SW 5-13 MPH. W 8-14 MPH.
TRANSPORT WINDS SW 8-14 MPH. W 11-14 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 11 FAIR.
OUTLOOK FOR SUN JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 135 (POOR). 498 (FAIR).
OUTLOOK FOR SAT JUL 11 541 (FAIR).
OUTLOOK FOR SUN JUL 12 287 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 2-6 MPH. SW 5-10 MPH.
TRANSPORT WINDS NW 4-8 MPH. SW 9-13 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 11 GOOD.
OUTLOOK FOR SUN JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 61 (POOR). 464 (FAIR).
OUTLOOK FOR SAT JUL 11 764 (GOOD).
OUTLOOK FOR SUN JUL 12 232 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NE 0-2 MPH. NW 6-8 MPH.
TRANSPORT WINDS W 3-8 MPH. W 9-11 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SAT JUL 11 GOOD.
OUTLOOK FOR SUN JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 40 (POOR). 321 (FAIR).
OUTLOOK FOR SAT JUL 11 649 (GOOD).
OUTLOOK FOR SUN JUL 12 206 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 4-12 MPH. W 6-10 MPH.
TRANSPORT WINDS SW 8-14 MPH. W 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUL 11 FAIR.
OUTLOOK FOR SUN JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 125 (POOR). 372 (FAIR).
OUTLOOK FOR SAT JUL 11 404 (FAIR).
OUTLOOK FOR SUN JUL 12 231 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 482 (FAIR)
ELLENSBURG 726 (GOOD)
GOLDENDALE 649 (GOOD)
TRI-CITIES 480 (FAIR)
WALLA WALLA 359 (FAIR)
YAKIMA 446 (FAIR)
BEND 660 (GOOD)
PRINEVILLE 540 (FAIR)
ENTERPRISE 639 (GOOD)
HERMISTON 540 (FAIR)
JOHN DAY 923 (GOOD)
LA GRANDE 365 (FAIR)
MADRAS 410 (FAIR)
MEACHAM 244 (POOR)
PENDLETON 433 (FAIR)
REDMOND 585 (FAIR)
SENECA 1050 (GOOD)
THE DALLES 600 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page