067
AUUS46 KPDT 141325
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PST FRI NOV 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                 S 8-18 MPH.         SW 10-14 MPH.
TRANSPORT WINDS               SW 8-18 MPH.        SW 10-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SAT NOV 15        FAIR.
OUTLOOK FOR SUN NOV 16        POOR.

VENTILATION INDEX (CATEGORY)  60 (POOR).          185 (POOR).
OUTLOOK FOR SAT NOV 15        155 (POOR).
OUTLOOK FOR SUN NOV 16        67 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-11 MPH.        SW 8-14 MPH.
TRANSPORT WINDS               S 6-12 MPH.         SW 16-22 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT NOV 15        POOR.
OUTLOOK FOR SUN NOV 16        POOR.

VENTILATION INDEX (CATEGORY)  56 (POOR).          415 (FAIR).
OUTLOOK FOR SAT NOV 15        64 (POOR).
OUTLOOK FOR SUN NOV 16        94 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-6 MPH.         S 3-5 MPH.
TRANSPORT WINDS               SW 6-8 MPH.         SW 9-12 MPH.
MIXING HEIGHT                 4000 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT NOV 15        FAIR.
OUTLOOK FOR SUN NOV 16        FAIR.

VENTILATION INDEX (CATEGORY)  87 (POOR).          343 (FAIR).
OUTLOOK FOR SAT NOV 15        163 (POOR).
OUTLOOK FOR SUN NOV 16        185 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-19 MPH.         SW 7-18 MPH.
TRANSPORT WINDS               SW 8-19 MPH.        SW 8-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SAT NOV 15        POOR.
OUTLOOK FOR SUN NOV 16        POOR.

VENTILATION INDEX (CATEGORY)  83 (POOR).          205 (POOR).
OUTLOOK FOR SAT NOV 15        151 (POOR).
OUTLOOK FOR SUN NOV 16        58 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      177 (POOR)
ELLENSBURG    185 (POOR)
GOLDENDALE    386 (FAIR)
TRI-CITIES    197 (POOR)
WALLA WALLA   154 (POOR)
YAKIMA        214 (POOR)
BEND          611 (GOOD)
PRINEVILLE    512 (FAIR)
ENTERPRISE    305 (FAIR)
HERMISTON     147 (POOR)
JOHN DAY      733 (GOOD)
LA GRANDE     382 (FAIR)
MADRAS        456 (FAIR)
MEACHAM       238 (POOR)
PENDLETON     201 (POOR)
REDMOND       394 (FAIR)
SENECA        684 (GOOD)
THE DALLES    165 (POOR)

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.
$$