888
AUUS46 KPDT 081225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT AUG 8 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 4-12 MPH. W 7-14 MPH.
TRANSPORT WINDS SW 7-13 MPH. W 9-15 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN AUG 9 FAIR.
OUTLOOK FOR MON AUG 10 FAIR.
VENTILATION INDEX (CATEGORY) 88 (POOR). 472 (FAIR).
OUTLOOK FOR SUN AUG 9 409 (FAIR).
OUTLOOK FOR MON AUG 10 440 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 1-7 MPH. NW 3-7 MPH.
TRANSPORT WINDS NW 4-9 MPH. W 7-10 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN AUG 9 FAIR.
OUTLOOK FOR MON AUG 10 FAIR.
VENTILATION INDEX (CATEGORY) 49 (POOR). 411 (FAIR).
OUTLOOK FOR SUN AUG 9 376 (FAIR).
OUTLOOK FOR MON AUG 10 311 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 0-2 MPH. NW 9-12 MPH.
TRANSPORT WINDS W 3-6 MPH. W 12-13 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN AUG 9 GOOD.
OUTLOOK FOR MON AUG 10 GOOD.
VENTILATION INDEX (CATEGORY) 38 (POOR). 459 (FAIR).
OUTLOOK FOR SUN AUG 9 398 (FAIR).
OUTLOOK FOR MON AUG 10 379 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 4-11 MPH. W 9-12 MPH.
TRANSPORT WINDS S 8-14 MPH. W 11-14 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN AUG 9 FAIR.
OUTLOOK FOR MON AUG 10 FAIR.
VENTILATION INDEX (CATEGORY) 106 (POOR). 526 (FAIR).
OUTLOOK FOR SUN AUG 9 430 (FAIR).
OUTLOOK FOR MON AUG 10 470 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 544 (FAIR)
ELLENSBURG 982 (GOOD)
GOLDENDALE 680 (GOOD)
TRI-CITIES 410 (FAIR)
WALLA WALLA 472 (FAIR)
YAKIMA 514 (FAIR)
BEND 563 (FAIR)
PRINEVILLE 592 (FAIR)
ENTERPRISE 541 (FAIR)
HERMISTON 465 (FAIR)
JOHN DAY 588 (FAIR)
LA GRANDE 540 (FAIR)
MADRAS 539 (FAIR)
MEACHAM 453 (FAIR)
PENDLETON 606 (GOOD)
REDMOND 608 (GOOD)
SENECA 867 (GOOD)
THE DALLES 654 (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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