235
AUUS46 KPDT 241225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT OCT 24 2026
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SE 2-9 MPH. N 2-5 MPH.
TRANSPORT WINDS S 4-8 MPH. E 3-5 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN OCT 25 POOR.
OUTLOOK FOR MON OCT 26 FAIR.
VENTILATION INDEX (CATEGORY) 26 (POOR). 47 (POOR).
OUTLOOK FOR SUN OCT 25 63 (POOR).
OUTLOOK FOR MON OCT 26 149 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 0-1 MPH. SE 2-5 MPH.
TRANSPORT WINDS SE 2-5 MPH. SE 5-7 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN OCT 25 POOR.
OUTLOOK FOR MON OCT 26 POOR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 91 (POOR).
OUTLOOK FOR SUN OCT 25 75 (POOR).
OUTLOOK FOR MON OCT 26 75 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS E 1-5 MPH. S 9-14 MPH.
TRANSPORT WINDS SE 2-5 MPH. S 15-17 MPH.
MIXING HEIGHT NEAR SURFACE. 5500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN OCT 25 GOOD.
OUTLOOK FOR MON OCT 26 FAIR.
VENTILATION INDEX (CATEGORY) 25 (POOR). 313 (FAIR).
OUTLOOK FOR SUN OCT 25 489 (FAIR).
OUTLOOK FOR MON OCT 26 235 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SE 5-11 MPH. N 2-4 MPH.
TRANSPORT WINDS SE 6-11 MPH. SE 3-6 MPH.
MIXING HEIGHT NEAR SURFACE. 3000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR SUN OCT 25 POOR.
OUTLOOK FOR MON OCT 26 POOR.
VENTILATION INDEX (CATEGORY) 31 (POOR). 60 (POOR).
OUTLOOK FOR SUN OCT 25 85 (POOR).
OUTLOOK FOR MON OCT 26 155 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 121 (POOR)
ELLENSBURG 135 (POOR)
GOLDENDALE 99 (POOR)
TRI-CITIES 58 (POOR)
WALLA WALLA 43 (POOR)
YAKIMA 87 (POOR)
BEND 190 (POOR)
PRINEVILLE 291 (POOR)
ENTERPRISE 66 (POOR)
HERMISTON 29 (POOR)
JOHN DAY 215 (POOR)
LA GRANDE 268 (POOR)
MADRAS 256 (POOR)
MEACHAM 146 (POOR)
PENDLETON 25 (POOR)
REDMOND 247 (POOR)
SENECA 242 (POOR)
THE DALLES 140 (POOR)
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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