410
AUUS46 KPDT 061225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT TUE OCT 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 SE 1-7 MPH. N 2-5 MPH.
TRANSPORT WINDS S 4-8 MPH. W 3-5 MPH.
MIXING HEIGHT NEAR SURFACE. 3500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED OCT 7 POOR.
OUTLOOK FOR THU OCT 8 POOR.
VENTILATION INDEX (CATEGORY) 26 (POOR). 84 (POOR).
OUTLOOK FOR WED OCT 7 129 (POOR).
OUTLOOK FOR THU OCT 8 68 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 0-3 MPH. SE 1-5 MPH.
TRANSPORT WINDS NW 3-6 MPH. S 2-4 MPH.
MIXING HEIGHT NEAR SURFACE. 3500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED OCT 7 POOR.
OUTLOOK FOR THU OCT 8 POOR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 53 (POOR).
OUTLOOK FOR WED OCT 7 76 (POOR).
OUTLOOK FOR THU OCT 8 48 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NE 0-2 MPH. N 1-3 MPH.
TRANSPORT WINDS SW 2-5 MPH. W 4-6 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED OCT 7 FAIR.
OUTLOOK FOR THU OCT 8 FAIR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 101 (POOR).
OUTLOOK FOR WED OCT 7 80 (POOR).
OUTLOOK FOR THU OCT 8 76 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 3-7 MPH. NW 2-4 MPH.
TRANSPORT WINDS S 7-10 MPH. W 5-6 MPH.
MIXING HEIGHT NEAR SURFACE. 3500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED OCT 7 POOR.
OUTLOOK FOR THU OCT 8 POOR.
VENTILATION INDEX (CATEGORY) 32 (POOR). 99 (POOR).
OUTLOOK FOR WED OCT 7 118 (POOR).
OUTLOOK FOR THU OCT 8 84 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 114 (POOR)
ELLENSBURG 72 (POOR)
GOLDENDALE 64 (POOR)
TRI-CITIES 68 (POOR)
WALLA WALLA 95 (POOR)
YAKIMA 60 (POOR)
BEND 143 (POOR)
PRINEVILLE 102 (POOR)
ENTERPRISE 137 (POOR)
HERMISTON 53 (POOR)
JOHN DAY 194 (POOR)
LA GRANDE 120 (POOR)
MADRAS 98 (POOR)
MEACHAM 118 (POOR)
PENDLETON 80 (POOR)
REDMOND 55 (POOR)
SENECA 344 (FAIR)
THE DALLES 25 (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.
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