656
AUUS46 KPDT 021325
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST TUE DEC 2 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS SW 3-10 MPH. W 3-6 MPH.
TRANSPORT WINDS SW 5-11 MPH. NW 3-7 MPH.
MIXING HEIGHT NEAR SURFACE. NEAR SURFACE.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED DEC 3 POOR.
OUTLOOK FOR THU DEC 4 POOR.
VENTILATION INDEX (CATEGORY) 35 (POOR). 51 (POOR).
OUTLOOK FOR WED DEC 3 30 (POOR).
OUTLOOK FOR THU DEC 4 86 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 2-5 MPH. N 2-4 MPH.
TRANSPORT WINDS W 3-6 MPH. NW 3-6 MPH.
MIXING HEIGHT NEAR SURFACE. NEAR SURFACE.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED DEC 3 POOR.
OUTLOOK FOR THU DEC 4 POOR.
VENTILATION INDEX (CATEGORY) 29 (POOR). 35 (POOR).
OUTLOOK FOR WED DEC 3 30 (POOR).
OUTLOOK FOR THU DEC 4 41 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 4-5 MPH. NW 5-10 MPH.
TRANSPORT WINDS SW 6-10 MPH. NW 9-15 MPH.
MIXING HEIGHT 4000 FT MSL. 5000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED DEC 3 POOR.
OUTLOOK FOR THU DEC 4 POOR.
VENTILATION INDEX (CATEGORY) 67 (POOR). 178 (POOR).
OUTLOOK FOR WED DEC 3 66 (POOR).
OUTLOOK FOR THU DEC 4 170 (POOR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS SW 6-11 MPH. SW 4-7 MPH.
TRANSPORT WINDS SW 9-15 MPH. W 5-11 MPH.
MIXING HEIGHT NEAR SURFACE. 2000 FT MSL.
DISPERSION CATEGORY FAIR. POOR.
OUTLOOK FOR WED DEC 3 POOR.
OUTLOOK FOR THU DEC 4 POOR.
VENTILATION INDEX (CATEGORY) 69 (POOR). 99 (POOR).
OUTLOOK FOR WED DEC 3 47 (POOR).
OUTLOOK FOR THU DEC 4 104 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 322 (FAIR)
ELLENSBURG 218 (POOR)
GOLDENDALE 175 (POOR)
TRI-CITIES 43 (POOR)
WALLA WALLA 72 (POOR)
YAKIMA 68 (POOR)
BEND 456 (FAIR)
PRINEVILLE 332 (FAIR)
ENTERPRISE 300 (POOR)
HERMISTON 30 (POOR)
JOHN DAY 321 (FAIR)
LA GRANDE 239 (POOR)
MADRAS 389 (FAIR)
MEACHAM 99 (POOR)
PENDLETON 102 (POOR)
REDMOND 477 (FAIR)
SENECA 439 (FAIR)
THE DALLES 341 (FAIR)
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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