029
AUUS46 KPDT 141225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT TUE JUL 14 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 2-8 MPH. NE 3-7 MPH.
TRANSPORT WINDS SW 6-11 MPH. SE 4-8 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED JUL 15 POOR.
OUTLOOK FOR THU JUL 16 GOOD.
VENTILATION INDEX (CATEGORY) 55 (POOR). 191 (POOR).
OUTLOOK FOR WED JUL 15 398 (FAIR).
OUTLOOK FOR THU JUL 16 408 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 1-5 MPH. SE 5-10 MPH.
TRANSPORT WINDS NW 4-8 MPH. S 6-8 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR WED JUL 15 GOOD.
OUTLOOK FOR THU JUL 16 FAIR.
VENTILATION INDEX (CATEGORY) 35 (POOR). 355 (FAIR).
OUTLOOK FOR WED JUL 15 345 (FAIR).
OUTLOOK FOR THU JUL 16 321 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS S 1-3 MPH. SE 1-4 MPH.
TRANSPORT WINDS S 7-9 MPH. SW 4-8 MPH.
MIXING HEIGHT NEAR SURFACE. 8500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR WED JUL 15 GOOD.
OUTLOOK FOR THU JUL 16 GOOD.
VENTILATION INDEX (CATEGORY) 56 (POOR). 237 (POOR).
OUTLOOK FOR WED JUL 15 527 (FAIR).
OUTLOOK FOR THU JUL 16 490 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 2-8 MPH. NE 4-8 MPH.
TRANSPORT WINDS S 7-12 MPH. NW 4-8 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR WED JUL 15 FAIR.
OUTLOOK FOR THU JUL 16 GOOD.
VENTILATION INDEX (CATEGORY) 71 (POOR). 146 (POOR).
OUTLOOK FOR WED JUL 15 484 (FAIR).
OUTLOOK FOR THU JUL 16 435 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 393 (FAIR)
ELLENSBURG 612 (GOOD)
GOLDENDALE 343 (FAIR)
TRI-CITIES 189 (POOR)
WALLA WALLA 228 (POOR)
YAKIMA 460 (FAIR)
BEND 460 (FAIR)
PRINEVILLE 385 (FAIR)
ENTERPRISE 150 (POOR)
HERMISTON 167 (POOR)
JOHN DAY 128 (POOR)
LA GRANDE 243 (POOR)
MADRAS 313 (FAIR)
MEACHAM 137 (POOR)
PENDLETON 26 (POOR)
REDMOND 447 (FAIR)
SENECA 270 (POOR)
THE DALLES 336 (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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