102
AUUS46 KPDT 151325
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST SAT NOV 15 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 7-17 MPH. W 5-10 MPH.
TRANSPORT WINDS SW 8-18 MPH. SW 6-12 MPH.
MIXING HEIGHT NEAR SURFACE. 2500 FT MSL.
DISPERSION CATEGORY FAIR. POOR.
OUTLOOK FOR SUN NOV 16 POOR.
OUTLOOK FOR MON NOV 17 POOR.
VENTILATION INDEX (CATEGORY) 64 (POOR). 181 (POOR).
OUTLOOK FOR SUN NOV 16 31 (POOR).
OUTLOOK FOR MON NOV 17 169 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS SW 5-14 MPH. SE 3-7 MPH.
TRANSPORT WINDS SW 7-16 MPH. SW 3-8 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN NOV 16 POOR.
OUTLOOK FOR MON NOV 17 POOR.
VENTILATION INDEX (CATEGORY) 51 (POOR). 88 (POOR).
OUTLOOK FOR SUN NOV 16 33 (POOR).
OUTLOOK FOR MON NOV 17 95 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 5-6 MPH. S 3-6 MPH.
TRANSPORT WINDS S 6-8 MPH. S 10-13 MPH.
MIXING HEIGHT 4000 FT MSL. 4500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN NOV 16 GOOD.
OUTLOOK FOR MON NOV 17 FAIR.
VENTILATION INDEX (CATEGORY) 66 (POOR). 153 (POOR).
OUTLOOK FOR SUN NOV 16 306 (FAIR).
OUTLOOK FOR MON NOV 17 246 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 6-19 MPH. SW 3-10 MPH.
TRANSPORT WINDS SW 9-20 MPH. S 6-15 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY FAIR. POOR.
OUTLOOK FOR SUN NOV 16 POOR.
OUTLOOK FOR MON NOV 17 POOR.
VENTILATION INDEX (CATEGORY) 80 (POOR). 197 (POOR).
OUTLOOK FOR SUN NOV 16 45 (POOR).
OUTLOOK FOR MON NOV 17 176 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 224 (POOR)
ELLENSBURG 143 (POOR)
GOLDENDALE 140 (POOR)
TRI-CITIES 283 (POOR)
WALLA WALLA 263 (POOR)
YAKIMA 57 (POOR)
BEND 124 (POOR)
PRINEVILLE 150 (POOR)
ENTERPRISE 70 (POOR)
HERMISTON 113 (POOR)
JOHN DAY 118 (POOR)
LA GRANDE 132 (POOR)
MADRAS 76 (POOR)
MEACHAM 64 (POOR)
PENDLETON 93 (POOR)
REDMOND 122 (POOR)
SENECA 160 (POOR)
THE DALLES 66 (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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