954
AUUS46 KPDT 071225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT TUE JUL 7 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 2-8 MPH. W 5-9 MPH.
TRANSPORT WINDS S 6-11 MPH. SW 8-10 MPH.
MIXING HEIGHT NEAR SURFACE. 10000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED JUL 8 GOOD.
OUTLOOK FOR THU JUL 9 FAIR.
VENTILATION INDEX (CATEGORY) 75 (POOR). 469 (FAIR).
OUTLOOK FOR WED JUL 8 669 (GOOD).
OUTLOOK FOR THU JUL 9 504 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 0-3 MPH. SW 7-16 MPH.
TRANSPORT WINDS NW 3-7 MPH. SW 10-18 MPH.
MIXING HEIGHT NEAR SURFACE. 10500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED JUL 8 FAIR.
OUTLOOK FOR THU JUL 9 FAIR.
VENTILATION INDEX (CATEGORY) 37 (POOR). 759 (GOOD).
OUTLOOK FOR WED JUL 8 570 (FAIR).
OUTLOOK FOR THU JUL 9 354 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NE 0-2 MPH. SW 1-3 MPH.
TRANSPORT WINDS N 2-4 MPH. SW 8-10 MPH.
MIXING HEIGHT NEAR SURFACE. 11000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED JUL 8 GOOD.
OUTLOOK FOR THU JUL 9 GOOD.
VENTILATION INDEX (CATEGORY) 25 (POOR). 451 (FAIR).
OUTLOOK FOR WED JUL 8 613 (GOOD).
OUTLOOK FOR THU JUL 9 449 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 3-8 MPH. N 5-9 MPH.
TRANSPORT WINDS S 7-10 MPH. SW 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED JUL 8 FAIR.
OUTLOOK FOR THU JUL 9 FAIR.
VENTILATION INDEX (CATEGORY) 62 (POOR). 469 (FAIR).
OUTLOOK FOR WED JUL 8 698 (GOOD).
OUTLOOK FOR THU JUL 9 526 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 475 (FAIR)
ELLENSBURG 792 (GOOD)
GOLDENDALE 678 (GOOD)
TRI-CITIES 540 (FAIR)
WALLA WALLA 328 (FAIR)
YAKIMA 903 (GOOD)
BEND 510 (FAIR)
PRINEVILLE 644 (GOOD)
ENTERPRISE 598 (FAIR)
HERMISTON 402 (FAIR)
JOHN DAY 1050 (GOOD)
LA GRANDE 476 (FAIR)
MADRAS 479 (FAIR)
MEACHAM 619 (GOOD)
PENDLETON 521 (FAIR)
REDMOND 566 (FAIR)
SENECA 1050 (GOOD)
THE DALLES 501 (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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