326
AUUS46 KPDT 051225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT JUL 5 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 9-19 MPH. SW 9-12 MPH.
TRANSPORT WINDS SW 12-19 MPH. SW 9-12 MPH.
MIXING HEIGHT NEAR SURFACE. 7000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SUN JUL 6 FAIR.
OUTLOOK FOR MON JUL 7 FAIR.
VENTILATION INDEX (CATEGORY) 264 (POOR). 579 (FAIR).
OUTLOOK FOR SUN JUL 6 322 (FAIR).
OUTLOOK FOR MON JUL 7 209 (POOR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS W 3-7 MPH. S 5-9 MPH.
TRANSPORT WINDS W 5-9 MPH. SW 6-9 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR SUN JUL 6 POOR.
OUTLOOK FOR MON JUL 7 FAIR.
VENTILATION INDEX (CATEGORY) 92 (POOR). 333 (FAIR).
OUTLOOK FOR SUN JUL 6 204 (POOR).
OUTLOOK FOR MON JUL 7 233 (POOR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS SE 2-3 MPH. NW 5-7 MPH.
TRANSPORT WINDS SW 3-6 MPH. W 6-8 MPH.
MIXING HEIGHT 4000 FT MSL. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR SUN JUL 6 GOOD.
OUTLOOK FOR MON JUL 7 GOOD.
VENTILATION INDEX (CATEGORY) 85 (POOR). 399 (FAIR).
OUTLOOK FOR SUN JUL 6 329 (FAIR).
OUTLOOK FOR MON JUL 7 379 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 6-16 MPH. W 7-12 MPH.
TRANSPORT WINDS SW 11-19 MPH. SW 8-11 MPH.
MIXING HEIGHT 2000 FT MSL. 7000 FT MSL.
DISPERSION CATEGORY FAIR. FAIR.
OUTLOOK FOR SUN JUL 6 FAIR.
OUTLOOK FOR MON JUL 7 FAIR.
VENTILATION INDEX (CATEGORY) 257 (POOR). 510 (FAIR).
OUTLOOK FOR SUN JUL 6 357 (FAIR).
OUTLOOK FOR MON JUL 7 269 (POOR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 529 (FAIR)
ELLENSBURG 612 (GOOD)
GOLDENDALE 507 (FAIR)
TRI-CITIES 481 (FAIR)
WALLA WALLA 483 (FAIR)
YAKIMA 342 (FAIR)
BEND 287 (POOR)
PRINEVILLE 248 (POOR)
ENTERPRISE 405 (FAIR)
HERMISTON 553 (FAIR)
JOHN DAY 560 (FAIR)
LA GRANDE 452 (FAIR)
MADRAS 231 (POOR)
MEACHAM 424 (FAIR)
PENDLETON 556 (FAIR)
REDMOND 271 (POOR)
SENECA 608 (GOOD)
THE DALLES 511 (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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