366
AUUS46 KPDT 081148
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
448 AM PDT MON JUL 8 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 5-10 MPH.         NW 6-9 MPH.
TRANSPORT WINDS               S 5-10 MPH.         W 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JUL 9         FAIR.
OUTLOOK FOR WED JUL 10        GOOD.

VENTILATION INDEX (CATEGORY)  64 (POOR).          284 (POOR).
OUTLOOK FOR TUE JUL 9         210 (POOR).
OUTLOOK FOR WED JUL 10        517 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         SE 3-7 MPH.
TRANSPORT WINDS               NW 4-9 MPH.         NW 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JUL 9         GOOD.
OUTLOOK FOR WED JUL 10        GOOD.

VENTILATION INDEX (CATEGORY)  53 (POOR).          253 (POOR).
OUTLOOK FOR TUE JUL 9         329 (FAIR).
OUTLOOK FOR WED JUL 10        684 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 2-4 MPH.         N 6-8 MPH.
TRANSPORT WINDS               W 2-4 MPH.          NW 7-9 MPH.
MIXING HEIGHT                 4000 FT MSL.        11000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE JUL 9         GOOD.
OUTLOOK FOR WED JUL 10        GOOD.

VENTILATION INDEX (CATEGORY)  32 (POOR).          298 (POOR).
OUTLOOK FOR TUE JUL 9         342 (FAIR).
OUTLOOK FOR WED JUL 10        383 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-10 MPH.         NW 7-9 MPH.
TRANSPORT WINDS               S 5-10 MPH.         W 5-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JUL 9         FAIR.
OUTLOOK FOR WED JUL 10        FAIR.

VENTILATION INDEX (CATEGORY)  76 (POOR).          285 (POOR).
OUTLOOK FOR TUE JUL 9         249 (POOR).
OUTLOOK FOR WED JUL 10        416 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      440 (FAIR)
ELLENSBURG    435 (FAIR)
GOLDENDALE    288 (POOR)
TRI-CITIES    237 (POOR)
WALLA WALLA   231 (POOR)
YAKIMA        357 (FAIR)
BEND          242 (POOR)
PRINEVILLE    474 (FAIR)
ENTERPRISE    211 (POOR)
HERMISTON     224 (POOR)
JOHN DAY      499 (FAIR)
LA GRANDE     286 (POOR)
MADRAS        348 (FAIR)
MEACHAM       238 (POOR)
PENDLETON     276 (POOR)
REDMOND       353 (FAIR)
SENECA        658 (GOOD)
THE DALLES    233 (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:
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.
$$