021
AUUS46 KPDT 071325
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST FRI NOV 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 SW 13-27 MPH. SW 13-18 MPH.
TRANSPORT WINDS SW 14-27 MPH. W 20-24 MPH.
MIXING HEIGHT NEAR SURFACE. 5000 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR SAT NOV 8 POOR.
OUTLOOK FOR SUN NOV 9 POOR.
VENTILATION INDEX (CATEGORY) 133 (POOR). 837 (GOOD).
OUTLOOK FOR SAT NOV 8 81 (POOR).
OUTLOOK FOR SUN NOV 9 50 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS SW 8-15 MPH. W 6-12 MPH.
TRANSPORT WINDS SW 9-16 MPH. W 13-19 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SAT NOV 8 POOR.
OUTLOOK FOR SUN NOV 9 POOR.
VENTILATION INDEX (CATEGORY) 80 (POOR). 565 (FAIR).
OUTLOOK FOR SAT NOV 8 74 (POOR).
OUTLOOK FOR SUN NOV 9 48 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS W 9-13 MPH. W 8-9 MPH.
TRANSPORT WINDS W 12-15 MPH. W 14-19 MPH.
MIXING HEIGHT 5000 FT MSL. 8000 FT MSL.
DISPERSION CATEGORY FAIR. GOOD.
OUTLOOK FOR SAT NOV 8 FAIR.
OUTLOOK FOR SUN NOV 9 GOOD.
VENTILATION INDEX (CATEGORY) 235 (POOR). 820 (GOOD).
OUTLOOK FOR SAT NOV 8 233 (POOR).
OUTLOOK FOR SUN NOV 9 328 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 12-28 MPH. W 12-20 MPH.
TRANSPORT WINDS SW 14-27 MPH. W 19-23 MPH.
MIXING HEIGHT NEAR SURFACE. 5000 FT MSL.
DISPERSION CATEGORY GOOD. GOOD.
OUTLOOK FOR SAT NOV 8 POOR.
OUTLOOK FOR SUN NOV 9 POOR.
VENTILATION INDEX (CATEGORY) 173 (POOR). 813 (GOOD).
OUTLOOK FOR SAT NOV 8 73 (POOR).
OUTLOOK FOR SUN NOV 9 69 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 868 (GOOD)
ELLENSBURG 689 (GOOD)
GOLDENDALE 686 (GOOD)
TRI-CITIES 764 (GOOD)
WALLA WALLA 737 (GOOD)
YAKIMA 351 (FAIR)
BEND 240 (POOR)
PRINEVILLE 422 (FAIR)
ENTERPRISE 857 (GOOD)
HERMISTON 925 (GOOD)
JOHN DAY 565 (FAIR)
LA GRANDE 949 (GOOD)
MADRAS 465 (FAIR)
MEACHAM 710 (GOOD)
PENDLETON 993 (GOOD)
REDMOND 387 (FAIR)
SENECA 481 (FAIR)
THE DALLES 598 (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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