368
AUUS46 KPDT 101225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT THU JUL 10 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 12-22 MPH. W 10-14 MPH.
TRANSPORT WINDS SW 12-21 MPH. W 10-14 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR FRI JUL 11 FAIR.
OUTLOOK FOR SAT JUL 12 GOOD.
VENTILATION INDEX (CATEGORY) 282 (POOR). 701 (GOOD).
OUTLOOK FOR FRI JUL 11 304 (FAIR).
OUTLOOK FOR SAT JUL 12 558 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 4-8 MPH. NW 8-11 MPH.
TRANSPORT WINDS NW 5-9 MPH. NW 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI JUL 11 POOR.
OUTLOOK FOR SAT JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 128 (POOR). 552 (FAIR).
OUTLOOK FOR FRI JUL 11 262 (POOR).
OUTLOOK FOR SAT JUL 12 302 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 5-7 MPH. NW 11-14 MPH.
TRANSPORT WINDS W 5-9 MPH. W 13-15 MPH.
MIXING HEIGHT 4500 FT MSL. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI JUL 11 GOOD.
OUTLOOK FOR SAT JUL 12 GOOD.
VENTILATION INDEX (CATEGORY) 215 (POOR). 706 (GOOD).
OUTLOOK FOR FRI JUL 11 578 (FAIR).
OUTLOOK FOR SAT JUL 12 319 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 10-22 MPH. W 11-15 MPH.
TRANSPORT WINDS SW 13-21 MPH. W 12-16 MPH.
MIXING HEIGHT 2500 FT MSL. 7500 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR FRI JUL 11 FAIR.
OUTLOOK FOR SAT JUL 12 FAIR.
VENTILATION INDEX (CATEGORY) 349 (FAIR). 755 (GOOD).
OUTLOOK FOR FRI JUL 11 330 (FAIR).
OUTLOOK FOR SAT JUL 12 520 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 766 (GOOD)
ELLENSBURG 1050 (GOOD)
GOLDENDALE 813 (GOOD)
TRI-CITIES 644 (GOOD)
WALLA WALLA 695 (GOOD)
YAKIMA 642 (GOOD)
BEND 495 (FAIR)
PRINEVILLE 514 (FAIR)
ENTERPRISE 715 (GOOD)
HERMISTON 605 (GOOD)
JOHN DAY 675 (GOOD)
LA GRANDE 754 (GOOD)
MADRAS 487 (FAIR)
MEACHAM 678 (GOOD)
PENDLETON 865 (GOOD)
REDMOND 522 (FAIR)
SENECA 596 (FAIR)
THE DALLES 924 (GOOD)
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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