367
AUUS46 KPDT 141225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT WED OCT 14 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. W 2-5 MPH.
TRANSPORT WINDS S 4-8 MPH. NW 3-6 MPH.
MIXING HEIGHT NEAR SURFACE. 4000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR THU OCT 15 POOR.
OUTLOOK FOR FRI OCT 16 POOR.
VENTILATION INDEX (CATEGORY) 28 (POOR). 113 (POOR).
OUTLOOK FOR THU OCT 15 122 (POOR).
OUTLOOK FOR FRI OCT 16 80 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 0-1 MPH. SE 2-6 MPH.
TRANSPORT WINDS W 2-5 MPH. N 3-6 MPH.
MIXING HEIGHT NEAR SURFACE. 3500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR THU OCT 15 FAIR.
OUTLOOK FOR FRI OCT 16 POOR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 69 (POOR).
OUTLOOK FOR THU OCT 15 142 (POOR).
OUTLOOK FOR FRI OCT 16 72 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS NE 0-3 MPH. NW 5-10 MPH.
TRANSPORT WINDS NW 3-6 MPH. N 10-13 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU OCT 15 FAIR.
OUTLOOK FOR FRI OCT 16 GOOD.
VENTILATION INDEX (CATEGORY) 26 (POOR). 300 (POOR).
OUTLOOK FOR THU OCT 15 159 (POOR).
OUTLOOK FOR FRI OCT 16 562 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 3-7 MPH. NW 2-5 MPH.
TRANSPORT WINDS S 6-8 MPH. NW 5-7 MPH.
MIXING HEIGHT NEAR SURFACE. 4000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR THU OCT 15 POOR.
OUTLOOK FOR FRI OCT 16 FAIR.
VENTILATION INDEX (CATEGORY) 38 (POOR). 143 (POOR).
OUTLOOK FOR THU OCT 15 81 (POOR).
OUTLOOK FOR FRI OCT 16 194 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 268 (POOR)
ELLENSBURG 293 (POOR)
GOLDENDALE 98 (POOR)
TRI-CITIES 78 (POOR)
WALLA WALLA 130 (POOR)
YAKIMA 69 (POOR)
BEND 162 (POOR)
PRINEVILLE 193 (POOR)
ENTERPRISE 250 (POOR)
HERMISTON 87 (POOR)
JOHN DAY 275 (POOR)
LA GRANDE 308 (FAIR)
MADRAS 119 (POOR)
MEACHAM 182 (POOR)
PENDLETON 130 (POOR)
REDMOND 178 (POOR)
SENECA 369 (FAIR)
THE DALLES 141 (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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