972
AUUS46 KPDT 111225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT THU JUN 11 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 2-8 MPH. W 6-11 MPH.
TRANSPORT WINDS S 5-10 MPH. SW 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI JUN 12 FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
VENTILATION INDEX (CATEGORY) 78 (POOR). 457 (FAIR).
OUTLOOK FOR FRI JUN 12 514 (FAIR).
OUTLOOK FOR SAT JUN 13 723 (GOOD).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS N 0-3 MPH. SE 3-7 MPH.
TRANSPORT WINDS W 2-5 MPH. W 6-9 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI JUN 12 FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
VENTILATION INDEX (CATEGORY) 38 (POOR). 287 (POOR).
OUTLOOK FOR FRI JUN 12 501 (FAIR).
OUTLOOK FOR SAT JUN 13 899 (GOOD).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS E 1-4 MPH. S 5-6 MPH.
TRANSPORT WINDS S 3-6 MPH. S 11-13 MPH.
MIXING HEIGHT NEAR SURFACE. 9000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR FRI JUN 12 GOOD.
OUTLOOK FOR SAT JUN 13 GOOD.
VENTILATION INDEX (CATEGORY) 79 (POOR). 592 (FAIR).
OUTLOOK FOR FRI JUN 12 611 (GOOD).
OUTLOOK FOR SAT JUN 13 722 (GOOD).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 3-7 MPH. NW 6-9 MPH.
TRANSPORT WINDS S 6-10 MPH. SW 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR FRI JUN 12 FAIR.
OUTLOOK FOR SAT JUN 13 GOOD.
VENTILATION INDEX (CATEGORY) 88 (POOR). 409 (FAIR).
OUTLOOK FOR FRI JUN 12 565 (FAIR).
OUTLOOK FOR SAT JUN 13 573 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 419 (FAIR)
ELLENSBURG 352 (FAIR)
GOLDENDALE 387 (FAIR)
TRI-CITIES 543 (FAIR)
WALLA WALLA 387 (FAIR)
YAKIMA 263 (POOR)
BEND 303 (FAIR)
PRINEVILLE 288 (POOR)
ENTERPRISE 381 (FAIR)
HERMISTON 423 (FAIR)
JOHN DAY 421 (FAIR)
LA GRANDE 473 (FAIR)
MADRAS 245 (POOR)
MEACHAM 454 (FAIR)
PENDLETON 412 (FAIR)
REDMOND 293 (POOR)
SENECA 407 (FAIR)
THE DALLES 381 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page