144
AUUS46 KPDT 101225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT OCT 10 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 6-16 MPH. W 3-6 MPH.
TRANSPORT WINDS SW 9-19 MPH. W 5-7 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY FAIR. POOR.
OUTLOOK FOR SUN OCT 11 GOOD.
OUTLOOK FOR MON OCT 12 POOR.
VENTILATION INDEX (CATEGORY) 99 (POOR). 359 (FAIR).
OUTLOOK FOR SUN OCT 11 648 (GOOD).
OUTLOOK FOR MON OCT 12 152 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 1-7 MPH. N 2-6 MPH.
TRANSPORT WINDS W 5-10 MPH. N 5-6 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN OCT 11 GOOD.
OUTLOOK FOR MON OCT 12 POOR.
VENTILATION INDEX (CATEGORY) 39 (POOR). 269 (POOR).
OUTLOOK FOR SUN OCT 11 993 (GOOD).
OUTLOOK FOR MON OCT 12 179 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS E 4-9 MPH. NW 7-13 MPH.
TRANSPORT WINDS W 6-11 MPH. NW 7-13 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN OCT 11 FAIR.
OUTLOOK FOR MON OCT 12 FAIR.
VENTILATION INDEX (CATEGORY) 95 (POOR). 386 (FAIR).
OUTLOOK FOR SUN OCT 11 438 (FAIR).
OUTLOOK FOR MON OCT 12 224 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 8-15 MPH. W 4-5 MPH.
TRANSPORT WINDS SW 12-17 MPH. W 6-8 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SUN OCT 11 FAIR.
OUTLOOK FOR MON OCT 12 POOR.
VENTILATION INDEX (CATEGORY) 139 (POOR). 357 (FAIR).
OUTLOOK FOR SUN OCT 11 360 (FAIR).
OUTLOOK FOR MON OCT 12 162 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 307 (FAIR)
ELLENSBURG 317 (FAIR)
GOLDENDALE 357 (FAIR)
TRI-CITIES 314 (FAIR)
WALLA WALLA 383 (FAIR)
YAKIMA 314 (FAIR)
BEND 439 (FAIR)
PRINEVILLE 495 (FAIR)
ENTERPRISE 287 (POOR)
HERMISTON 334 (FAIR)
JOHN DAY 465 (FAIR)
LA GRANDE 424 (FAIR)
MADRAS 484 (FAIR)
MEACHAM 321 (FAIR)
PENDLETON 402 (FAIR)
REDMOND 431 (FAIR)
SENECA 471 (FAIR)
THE DALLES 677 (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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