770
AUUS46 KPDT 131225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT FRI JUN 13 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 8-15 MPH. W 11-14 MPH.
TRANSPORT WINDS SW 9-16 MPH. W 11-14 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR SAT JUN 14 FAIR.
OUTLOOK FOR SUN JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 154 (POOR). 585 (FAIR).
OUTLOOK FOR SAT JUN 14 468 (FAIR).
OUTLOOK FOR SUN JUN 15 178 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 4-8 MPH. NW 7-10 MPH.
TRANSPORT WINDS NW 5-10 MPH. W 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 14 POOR.
OUTLOOK FOR SUN JUN 15 POOR.
VENTILATION INDEX (CATEGORY) 97 (POOR). 465 (FAIR).
OUTLOOK FOR SAT JUN 14 256 (POOR).
OUTLOOK FOR SUN JUN 15 190 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 3-7 MPH. NW 9-11 MPH.
TRANSPORT WINDS NW 5-9 MPH. NW 9-11 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SAT JUN 14 GOOD.
OUTLOOK FOR SUN JUN 15 GOOD.
VENTILATION INDEX (CATEGORY) 83 (POOR). 429 (FAIR).
OUTLOOK FOR SAT JUN 14 345 (FAIR).
OUTLOOK FOR SUN JUN 15 386 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 6-16 MPH. W 10-13 MPH.
TRANSPORT WINDS SW 8-15 MPH. W 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SAT JUN 14 FAIR.
OUTLOOK FOR SUN JUN 15 FAIR.
VENTILATION INDEX (CATEGORY) 142 (POOR). 486 (FAIR).
OUTLOOK FOR SAT JUN 14 359 (FAIR).
OUTLOOK FOR SUN JUN 15 215 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 569 (FAIR)
ELLENSBURG 852 (GOOD)
GOLDENDALE 695 (GOOD)
TRI-CITIES 507 (FAIR)
WALLA WALLA 455 (FAIR)
YAKIMA 460 (FAIR)
BEND 586 (FAIR)
PRINEVILLE 626 (GOOD)
ENTERPRISE 334 (FAIR)
HERMISTON 573 (FAIR)
JOHN DAY 643 (GOOD)
LA GRANDE 435 (FAIR)
MADRAS 535 (FAIR)
MEACHAM 331 (FAIR)
PENDLETON 564 (FAIR)
REDMOND 644 (GOOD)
SENECA 703 (GOOD)
THE DALLES 747 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page