476
AUUS46 KPDT 071225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON JUL 7 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SE 2-6 MPH. N 4-7 MPH.
TRANSPORT WINDS SW 3-6 MPH. W 6-8 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUL 8 FAIR.
OUTLOOK FOR WED JUL 9 GOOD.
VENTILATION INDEX (CATEGORY) 31 (POOR). 217 (POOR).
OUTLOOK FOR TUE JUL 8 404 (FAIR).
OUTLOOK FOR WED JUL 9 834 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 3-6 MPH. SE 4-7 MPH.
TRANSPORT WINDS NW 4-8 MPH. SW 4-7 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR TUE JUL 8 FAIR.
OUTLOOK FOR WED JUL 9 GOOD.
VENTILATION INDEX (CATEGORY) 50 (POOR). 302 (FAIR).
OUTLOOK FOR TUE JUL 8 358 (FAIR).
OUTLOOK FOR WED JUL 9 926 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS N 1-2 MPH. NE 3-4 MPH.
TRANSPORT WINDS N 3-5 MPH. W 7-9 MPH.
MIXING HEIGHT 4000 FT MSL. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR TUE JUL 8 GOOD.
OUTLOOK FOR WED JUL 9 GOOD.
VENTILATION INDEX (CATEGORY) 35 (POOR). 322 (FAIR).
OUTLOOK FOR TUE JUL 8 545 (FAIR).
OUTLOOK FOR WED JUL 9 623 (GOOD).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 3-6 MPH. NW 5-7 MPH.
TRANSPORT WINDS S 5-6 MPH. W 7-9 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUL 8 FAIR.
OUTLOOK FOR WED JUL 9 GOOD.
VENTILATION INDEX (CATEGORY) 38 (POOR). 315 (FAIR).
OUTLOOK FOR TUE JUL 8 395 (FAIR).
OUTLOOK FOR WED JUL 9 824 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 319 (FAIR)
ELLENSBURG 339 (FAIR)
GOLDENDALE 260 (POOR)
TRI-CITIES 158 (POOR)
WALLA WALLA 212 (POOR)
YAKIMA 370 (FAIR)
BEND 601 (GOOD)
PRINEVILLE 459 (FAIR)
ENTERPRISE 434 (FAIR)
HERMISTON 130 (POOR)
JOHN DAY 645 (GOOD)
LA GRANDE 380 (FAIR)
MADRAS 354 (FAIR)
MEACHAM 388 (FAIR)
PENDLETON 302 (FAIR)
REDMOND 418 (FAIR)
SENECA 674 (GOOD)
THE DALLES 132 (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