753
AUUS46 KPDT 241139
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
439 AM PDT MON JUN 24 2024

*** 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.          W 5-9 MPH.
TRANSPORT WINDS               S 4-9 MPH.          W 7-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE JUN 25        FAIR.
OUTLOOK FOR WED JUN 26        GOOD.

VENTILATION INDEX (CATEGORY)  115 (POOR).         299 (POOR).
OUTLOOK FOR TUE JUN 25        227 (POOR).
OUTLOOK FOR WED JUN 26        758 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-6 MPH.          SE 2-5 MPH.
TRANSPORT WINDS               W 3-6 MPH.          W 4-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JUN 25        POOR.
OUTLOOK FOR WED JUN 26        GOOD.

VENTILATION INDEX (CATEGORY)  54 (POOR).          189 (POOR).
OUTLOOK FOR TUE JUN 25        232 (POOR).
OUTLOOK FOR WED JUN 26        725 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 1-3 MPH.          N 5-9 MPH.
TRANSPORT WINDS               NW 3-6 MPH.         W 7-9 MPH.
MIXING HEIGHT                 4000 FT MSL.        8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE JUN 25        FAIR.
OUTLOOK FOR WED JUN 26        GOOD.

VENTILATION INDEX (CATEGORY)  83 (POOR).          310 (FAIR).
OUTLOOK FOR TUE JUN 25        171 (POOR).
OUTLOOK FOR WED JUN 26        641 (GOOD).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-9 MPH.          NW 6-8 MPH.
TRANSPORT WINDS               SW 6-11 MPH.        W 7-10 MPH.
MIXING HEIGHT                 2000 FT MSL.        5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE JUN 25        FAIR.
OUTLOOK FOR WED JUN 26        FAIR.

VENTILATION INDEX (CATEGORY)  120 (POOR).         276 (POOR).
OUTLOOK FOR TUE JUN 25        183 (POOR).
OUTLOOK FOR WED JUN 26        613 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      468 (FAIR)
ELLENSBURG    416 (FAIR)
GOLDENDALE    367 (FAIR)
TRI-CITIES    263 (POOR)
WALLA WALLA   248 (POOR)
YAKIMA        196 (POOR)
BEND          453 (FAIR)
PRINEVILLE    339 (FAIR)
ENTERPRISE    388 (FAIR)
HERMISTON     275 (POOR)
JOHN DAY      761 (GOOD)
LA GRANDE     354 (FAIR)
MADRAS        276 (POOR)
MEACHAM       200 (POOR)
PENDLETON     293 (POOR)
REDMOND       336 (FAIR)
SENECA       1050 (GOOD)
THE DALLES    487 (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:
HTTP://WWW.WRH.NOAA.GOV/PDT/GFORECAST/GINDEX.PHP?FCST=MIXHGT,VENTCAT,TRANSWIND,VENTINDX&VT=0,72

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.

$$