095
AUUS46 KPDT 021225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT WED SEP 2 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 8-18 MPH. SW 7-12 MPH.
TRANSPORT WINDS SW 11-22 MPH. SW 12-17 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR THU SEP 3 FAIR.
OUTLOOK FOR FRI SEP 4 FAIR.
VENTILATION INDEX (CATEGORY) 132 (POOR). 470 (FAIR).
OUTLOOK FOR THU SEP 3 432 (FAIR).
OUTLOOK FOR FRI SEP 4 308 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS SW 3-11 MPH. SW 13-21 MPH.
TRANSPORT WINDS SW 6-12 MPH. SW 19-23 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR THU SEP 3 FAIR.
OUTLOOK FOR FRI SEP 4 FAIR.
VENTILATION INDEX (CATEGORY) 139 (POOR). 968 (GOOD).
OUTLOOK FOR THU SEP 3 628 (GOOD).
OUTLOOK FOR FRI SEP 4 318 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS W 2-5 MPH. S 6-10 MPH.
TRANSPORT WINDS W 4-8 MPH. S 11-19 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR THU SEP 3 FAIR.
OUTLOOK FOR FRI SEP 4 FAIR.
VENTILATION INDEX (CATEGORY) 56 (POOR). 335 (FAIR).
OUTLOOK FOR THU SEP 3 265 (POOR).
OUTLOOK FOR FRI SEP 4 229 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 4-16 MPH. SW 5-10 MPH.
TRANSPORT WINDS SW 9-21 MPH. SW 11-22 MPH.
MIXING HEIGHT NEAR SURFACE. 6000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR THU SEP 3 FAIR.
OUTLOOK FOR FRI SEP 4 FAIR.
VENTILATION INDEX (CATEGORY) 119 (POOR). 492 (FAIR).
OUTLOOK FOR THU SEP 3 253 (POOR).
OUTLOOK FOR FRI SEP 4 252 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 510 (FAIR)
ELLENSBURG 820 (GOOD)
GOLDENDALE 477 (FAIR)
TRI-CITIES 613 (GOOD)
WALLA WALLA 331 (FAIR)
YAKIMA 1007 (GOOD)
BEND 967 (GOOD)
PRINEVILLE 805 (GOOD)
ENTERPRISE 375 (FAIR)
HERMISTON 484 (FAIR)
JOHN DAY 1050 (GOOD)
LA GRANDE 273 (POOR)
MADRAS 748 (GOOD)
MEACHAM 624 (GOOD)
PENDLETON 510 (FAIR)
REDMOND 823 (GOOD)
SENECA 1050 (GOOD)
THE DALLES 246 (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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