007
AUUS46 KPDT 141225
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT SAT JUN 14 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 8-17 MPH.        W 10-14 MPH.
TRANSPORT WINDS               SW 10-17 MPH.       SW 10-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SUN JUN 15        POOR.
OUTLOOK FOR MON JUN 16        GOOD.

VENTILATION INDEX (CATEGORY)  151 (POOR).         479 (FAIR).
OUTLOOK FOR SUN JUN 15        257 (POOR).
OUTLOOK FOR MON JUN 16        553 (FAIR).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          S 5-9 MPH.
TRANSPORT WINDS               W 4-8 MPH.          W 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN JUN 15        POOR.
OUTLOOK FOR MON JUN 16        FAIR.

VENTILATION INDEX (CATEGORY)  64 (POOR).          295 (POOR).
OUTLOOK FOR SUN JUN 15        179 (POOR).
OUTLOOK FOR MON JUN 16        532 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 1-3 MPH.         N 7-9 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         W 8-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SUN JUN 15        GOOD.
OUTLOOK FOR MON JUN 16        GOOD.

VENTILATION INDEX (CATEGORY)  56 (POOR).          433 (FAIR).
OUTLOOK FOR SUN JUN 15        372 (FAIR).
OUTLOOK FOR MON JUN 16        382 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-17 MPH.         W 9-12 MPH.
TRANSPORT WINDS               SW 7-16 MPH.        W 8-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN JUN 15        FAIR.
OUTLOOK FOR MON JUN 16        FAIR.

VENTILATION INDEX (CATEGORY)  115 (POOR).         377 (FAIR).
OUTLOOK FOR SUN JUN 15        239 (POOR).
OUTLOOK FOR MON JUN 16        423 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      451 (FAIR)
ELLENSBURG    451 (FAIR)
GOLDENDALE    502 (FAIR)
TRI-CITIES    490 (FAIR)
WALLA WALLA   373 (FAIR)
YAKIMA        271 (POOR)
BEND          520 (FAIR)
PRINEVILLE    435 (FAIR)
ENTERPRISE    447 (FAIR)
HERMISTON     531 (FAIR)
JOHN DAY      733 (GOOD)
LA GRANDE     495 (FAIR)
MADRAS        306 (FAIR)
MEACHAM       358 (FAIR)
PENDLETON     408 (FAIR)
REDMOND       403 (FAIR)
SENECA        898 (GOOD)
THE DALLES    577 (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.
$$