923
AUUS46 KPDT 031225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT WED JUN 3 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS W 2-6 MPH. W 10-17 MPH.
TRANSPORT WINDS E 3-7 MPH. W 13-18 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU JUN 4 GOOD.
OUTLOOK FOR FRI JUN 5 GOOD.
VENTILATION INDEX (CATEGORY) 36 (POOR). 502 (FAIR).
OUTLOOK FOR THU JUN 4 694 (GOOD).
OUTLOOK FOR FRI JUN 5 895 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 1-4 MPH. W 9-15 MPH.
TRANSPORT WINDS NW 2-5 MPH. W 11-15 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU JUN 4 FAIR.
OUTLOOK FOR FRI JUN 5 GOOD.
VENTILATION INDEX (CATEGORY) 42 (POOR). 455 (FAIR).
OUTLOOK FOR THU JUN 4 420 (FAIR).
OUTLOOK FOR FRI JUN 5 777 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS N 0-2 MPH. NW 6-8 MPH.
TRANSPORT WINDS E 2-4 MPH. NW 9-11 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU JUN 4 GOOD.
OUTLOOK FOR FRI JUN 5 GOOD.
VENTILATION INDEX (CATEGORY) 26 (POOR). 286 (POOR).
OUTLOOK FOR THU JUN 4 497 (FAIR).
OUTLOOK FOR FRI JUN 5 458 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 2-5 MPH. W 8-14 MPH.
TRANSPORT WINDS SE 4-7 MPH. W 11-16 MPH.
MIXING HEIGHT NEAR SURFACE. 5000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU JUN 4 FAIR.
OUTLOOK FOR FRI JUN 5 GOOD.
VENTILATION INDEX (CATEGORY) 31 (POOR). 377 (FAIR).
OUTLOOK FOR THU JUN 4 644 (GOOD).
OUTLOOK FOR FRI JUN 5 672 (GOOD).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 362 (FAIR)
ELLENSBURG 365 (FAIR)
GOLDENDALE 759 (GOOD)
TRI-CITIES 468 (FAIR)
WALLA WALLA 332 (FAIR)
YAKIMA 305 (FAIR)
BEND 605 (GOOD)
PRINEVILLE 692 (GOOD)
ENTERPRISE 335 (FAIR)
HERMISTON 535 (FAIR)
JOHN DAY 486 (FAIR)
LA GRANDE 307 (FAIR)
MADRAS 641 (GOOD)
MEACHAM 279 (POOR)
PENDLETON 484 (FAIR)
REDMOND 691 (GOOD)
SENECA 600 (FAIR)
THE DALLES 750 (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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