030
AUUS46 KPDT 061225
DDOPDT
DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SUN JUL 6 2025
*** AIR DISPERSION CATEGORIES: GOOD, FAIR, POOR ***
FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO
7:00 AM AFTERNOON
SURFACE WINDS S 4-9 MPH. NW 6-8 MPH.
TRANSPORT WINDS SW 5-9 MPH. W 6-9 MPH.
MIXING HEIGHT NEAR SURFACE. 7500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON JUL 7 FAIR.
OUTLOOK FOR TUE JUL 8 FAIR.
VENTILATION INDEX (CATEGORY) 71 (POOR). 331 (FAIR).
OUTLOOK FOR MON JUL 7 146 (POOR).
OUTLOOK FOR TUE JUL 8 518 (FAIR).
FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA
7:00 AM AFTERNOON
SURFACE WINDS NW 2-5 MPH. NW 3-6 MPH.
TRANSPORT WINDS NW 5-10 MPH. W 4-5 MPH.
MIXING HEIGHT NEAR SURFACE. 8000 FT MSL.
DISPERSION CATEGORY POOR. POOR.
OUTLOOK FOR MON JUL 7 FAIR.
OUTLOOK FOR TUE JUL 8 GOOD.
VENTILATION INDEX (CATEGORY) 76 (POOR). 253 (POOR).
OUTLOOK FOR MON JUL 7 270 (POOR).
OUTLOOK FOR TUE JUL 8 480 (FAIR).
FOR THE GRANDE RONDE RIVER VALLEY
7:00 AM AFTERNOON
SURFACE WINDS W 1-2 MPH. N 6-6 MPH.
TRANSPORT WINDS NW 3-6 MPH. NW 7-9 MPH.
MIXING HEIGHT 4000 FT MSL. 9500 FT MSL.
DISPERSION CATEGORY POOR. GOOD.
OUTLOOK FOR MON JUL 7 GOOD.
OUTLOOK FOR TUE JUL 8 GOOD.
VENTILATION INDEX (CATEGORY) 58 (POOR). 353 (FAIR).
OUTLOOK FOR MON JUL 7 271 (POOR).
OUTLOOK FOR TUE JUL 8 512 (FAIR).
FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS
7:00 AM AFTERNOON
SURFACE WINDS S 3-10 MPH. NW 6-10 MPH.
TRANSPORT WINDS SW 6-12 MPH. W 7-9 MPH.
MIXING HEIGHT NEAR SURFACE. 6500 FT MSL.
DISPERSION CATEGORY POOR. FAIR.
OUTLOOK FOR MON JUL 7 FAIR.
OUTLOOK FOR TUE JUL 8 FAIR.
VENTILATION INDEX (CATEGORY) 93 (POOR). 384 (FAIR).
OUTLOOK FOR MON JUL 7 255 (POOR).
OUTLOOK FOR TUE JUL 8 510 (FAIR).
SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM 388 (FAIR)
ELLENSBURG 425 (FAIR)
GOLDENDALE 311 (FAIR)
TRI-CITIES 292 (POOR)
WALLA WALLA 331 (FAIR)
YAKIMA 261 (POOR)
BEND 102 (POOR)
PRINEVILLE 299 (POOR)
ENTERPRISE 369 (FAIR)
HERMISTON 222 (POOR)
JOHN DAY 423 (FAIR)
LA GRANDE 428 (FAIR)
MADRAS 293 (POOR)
MEACHAM 345 (FAIR)
PENDLETON 353 (FAIR)
REDMOND 287 (POOR)
SENECA 449 (FAIR)
THE DALLES 324 (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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