434
AUUS46 KPDT 061325
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST TUE JAN 6 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 5-13 MPH. SW 13-19 MPH.
TRANSPORT WINDS SW 8-16 MPH. SW 13-22 MPH.
MIXING HEIGHT NEAR SURFACE. 2500 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR WED JAN 7 GOOD.
OUTLOOK FOR THU JAN 8 GOOD.
VENTILATION INDEX (CATEGORY) 47 (POOR). 163 (POOR).
OUTLOOK FOR WED JAN 7 735 (GOOD).
OUTLOOK FOR THU JAN 8 652 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS S 3-7 MPH. SW 11-18 MPH.
TRANSPORT WINDS S 3-10 MPH. SW 17-29 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED JAN 7 GOOD.
OUTLOOK FOR THU JAN 8 GOOD.
VENTILATION INDEX (CATEGORY) 48 (POOR). 271 (POOR).
OUTLOOK FOR WED JAN 7 415 (FAIR).
OUTLOOK FOR THU JAN 8 422 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 6-8 MPH. S 10-13 MPH.
TRANSPORT WINDS S 9-12 MPH. SW 15-21 MPH.
MIXING HEIGHT 4000 FT MSL. 5500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED JAN 7 GOOD.
OUTLOOK FOR THU JAN 8 GOOD.
VENTILATION INDEX (CATEGORY) 114 (POOR). 358 (FAIR).
OUTLOOK FOR WED JAN 7 547 (FAIR).
OUTLOOK FOR THU JAN 8 791 (GOOD).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 5-14 MPH. SW 12-25 MPH.
TRANSPORT WINDS SW 7-17 MPH. SW 18-30 MPH.
MIXING HEIGHT NEAR SURFACE. 3500 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR WED JAN 7 GOOD.
OUTLOOK FOR THU JAN 8 GOOD.
VENTILATION INDEX (CATEGORY) 67 (POOR). 365 (FAIR).
OUTLOOK FOR WED JAN 7 868 (GOOD).
OUTLOOK FOR THU JAN 8 644 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 188 (POOR)
ELLENSBURG 98 (POOR)
GOLDENDALE 350 (FAIR)
TRI-CITIES 263 (POOR)
WALLA WALLA 236 (POOR)
YAKIMA 163 (POOR)
BEND 723 (GOOD)
PRINEVILLE 579 (FAIR)
ENTERPRISE 250 (POOR)
HERMISTON 59 (POOR)
JOHN DAY 538 (FAIR)
LA GRANDE 365 (FAIR)
MADRAS 525 (FAIR)
MEACHAM 474 (FAIR)
PENDLETON 158 (POOR)
REDMOND 468 (FAIR)
SENECA 789 (GOOD)
THE DALLES 121 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page