935
AUUS46 KPDT 111225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT JUL 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 SW 9-19 MPH. W 9-13 MPH.
TRANSPORT WINDS SW 12-19 MPH. W 9-15 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SUN JUL 12 FAIR.
OUTLOOK FOR MON JUL 13 POOR.
VENTILATION INDEX (CATEGORY) 214 (POOR). 467 (FAIR).
OUTLOOK FOR SUN JUL 12 229 (POOR).
OUTLOOK FOR MON JUL 13 151 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 4-9 MPH. SW 11-19 MPH.
TRANSPORT WINDS W 6-10 MPH. SW 15-21 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUL 12 FAIR.
OUTLOOK FOR MON JUL 13 FAIR.
VENTILATION INDEX (CATEGORY) 125 (POOR). 781 (GOOD).
OUTLOOK FOR SUN JUL 12 383 (FAIR).
OUTLOOK FOR MON JUL 13 282 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS N 0-2 MPH. NW 5-9 MPH.
TRANSPORT WINDS NW 5-9 MPH. SW 10-20 MPH.
MIXING HEIGHT NEAR SURFACE. 10000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUL 12 GOOD.
OUTLOOK FOR MON JUL 13 FAIR.
VENTILATION INDEX (CATEGORY) 57 (POOR). 546 (FAIR).
OUTLOOK FOR SUN JUL 12 195 (POOR).
OUTLOOK FOR MON JUL 13 125 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 5-18 MPH. NW 6-10 MPH.
TRANSPORT WINDS SW 11-20 MPH. W 8-11 MPH.
MIXING HEIGHT NEAR SURFACE. 5000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SUN JUL 12 FAIR.
OUTLOOK FOR MON JUL 13 FAIR.
VENTILATION INDEX (CATEGORY) 186 (POOR). 306 (FAIR).
OUTLOOK FOR SUN JUL 12 201 (POOR).
OUTLOOK FOR MON JUL 13 167 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 543 (FAIR)
ELLENSBURG 751 (GOOD)
GOLDENDALE 647 (GOOD)
TRI-CITIES 676 (GOOD)
WALLA WALLA 311 (FAIR)
YAKIMA 760 (GOOD)
BEND 995 (GOOD)
PRINEVILLE 743 (GOOD)
ENTERPRISE 853 (GOOD)
HERMISTON 473 (FAIR)
JOHN DAY 1050 (GOOD)
LA GRANDE 465 (FAIR)
MADRAS 474 (FAIR)
MEACHAM 199 (POOR)
PENDLETON 349 (FAIR)
REDMOND 626 (GOOD)
SENECA 1050 (GOOD)
THE DALLES 649 (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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page