847
AUUS46 KPDT 061225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT MON JUL 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 NW 2-6 MPH. SE 3-7 MPH.
TRANSPORT WINDS NW 4-8 MPH. S 7-9 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUL 7 GOOD.
OUTLOOK FOR WED JUL 8 GOOD.
VENTILATION INDEX (CATEGORY) 37 (POOR). 193 (POOR).
OUTLOOK FOR TUE JUL 7 618 (GOOD).
OUTLOOK FOR WED JUL 8 740 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 1-4 MPH. SE 3-7 MPH.
TRANSPORT WINDS NW 7-10 MPH. S 6-7 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR TUE JUL 7 GOOD.
OUTLOOK FOR WED JUL 8 FAIR.
VENTILATION INDEX (CATEGORY) 67 (POOR). 306 (FAIR).
OUTLOOK FOR TUE JUL 7 856 (GOOD).
OUTLOOK FOR WED JUL 8 661 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NW 0-1 MPH. NW 2-5 MPH.
TRANSPORT WINDS N 5-9 MPH. NW 6-9 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUL 7 GOOD.
OUTLOOK FOR WED JUL 8 FAIR.
VENTILATION INDEX (CATEGORY) 41 (POOR). 237 (POOR).
OUTLOOK FOR TUE JUL 7 290 (POOR).
OUTLOOK FOR WED JUL 8 448 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 1-4 MPH. SE 3-6 MPH.
TRANSPORT WINDS S 4-8 MPH. S 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR TUE JUL 7 GOOD.
OUTLOOK FOR WED JUL 8 FAIR.
VENTILATION INDEX (CATEGORY) 29 (POOR). 201 (POOR).
OUTLOOK FOR TUE JUL 7 632 (GOOD).
OUTLOOK FOR WED JUL 8 682 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 453 (FAIR)
ELLENSBURG 419 (FAIR)
GOLDENDALE 436 (FAIR)
TRI-CITIES 92 (POOR)
WALLA WALLA 219 (POOR)
YAKIMA 346 (FAIR)
BEND 487 (FAIR)
PRINEVILLE 486 (FAIR)
ENTERPRISE 280 (POOR)
HERMISTON 216 (POOR)
JOHN DAY 128 (POOR)
LA GRANDE 291 (POOR)
MADRAS 410 (FAIR)
MEACHAM 91 (POOR)
PENDLETON 211 (POOR)
REDMOND 505 (FAIR)
SENECA 260 (POOR)
THE DALLES 462 (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.
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