205
AUUS46 KPDT 011225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON JUN 1 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 4-9 MPH. N 6-11 MPH.
TRANSPORT WINDS SW 5-10 MPH. N 6-10 MPH.
MIXING HEIGHT NEAR SURFACE. 9500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 2 FAIR.
OUTLOOK FOR WED JUN 3 FAIR.
VENTILATION INDEX (CATEGORY) 65 (POOR). 502 (FAIR).
OUTLOOK FOR TUE JUN 2 501 (FAIR).
OUTLOOK FOR WED JUN 3 336 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 2-5 MPH. NE 4-7 MPH.
TRANSPORT WINDS NW 5-9 MPH. NE 6-9 MPH.
MIXING HEIGHT NEAR SURFACE. 10000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 2 FAIR.
OUTLOOK FOR WED JUN 3 FAIR.
VENTILATION INDEX (CATEGORY) 91 (POOR). 518 (FAIR).
OUTLOOK FOR TUE JUN 2 429 (FAIR).
OUTLOOK FOR WED JUN 3 247 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 0-1 MPH. N 8-11 MPH.
TRANSPORT WINDS NW 3-6 MPH. N 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 10000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR TUE JUN 2 GOOD.
OUTLOOK FOR WED JUN 3 FAIR.
VENTILATION INDEX (CATEGORY) 75 (POOR). 570 (FAIR).
OUTLOOK FOR TUE JUN 2 455 (FAIR).
OUTLOOK FOR WED JUN 3 201 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 2-8 MPH. NW 6-11 MPH.
TRANSPORT WINDS S 6-11 MPH. N 6-10 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUN 2 FAIR.
OUTLOOK FOR WED JUN 3 FAIR.
VENTILATION INDEX (CATEGORY) 72 (POOR). 438 (FAIR).
OUTLOOK FOR TUE JUN 2 390 (FAIR).
OUTLOOK FOR WED JUN 3 330 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 239 (POOR)
ELLENSBURG 455 (FAIR)
GOLDENDALE 432 (FAIR)
TRI-CITIES 533 (FAIR)
WALLA WALLA 350 (FAIR)
YAKIMA 449 (FAIR)
BEND 253 (POOR)
PRINEVILLE 189 (POOR)
ENTERPRISE 463 (FAIR)
HERMISTON 430 (FAIR)
JOHN DAY 368 (FAIR)
LA GRANDE 580 (FAIR)
MADRAS 363 (FAIR)
MEACHAM 440 (FAIR)
PENDLETON 479 (FAIR)
REDMOND 217 (POOR)
SENECA 499 (FAIR)
THE DALLES 449 (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