709
AUUS46 KPDT 031115
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
415 AM PDT WED JUL 3 2024

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 7-14 MPH.        W 5-10 MPH.
TRANSPORT WINDS               SW 10-15 MPH.       NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR THU JUL 4         POOR.
OUTLOOK FOR FRI JUL 5         FAIR.

VENTILATION INDEX (CATEGORY)  133 (POOR).         420 (FAIR).
OUTLOOK FOR THU JUL 4         249 (POOR).
OUTLOOK FOR FRI JUL 5         373 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 4-8 MPH.          SW 4-8 MPH.
TRANSPORT WINDS               NW 5-13 MPH.        NW 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JUL 4         POOR.
OUTLOOK FOR FRI JUL 5         FAIR.

VENTILATION INDEX (CATEGORY)  81 (POOR).          292 (POOR).
OUTLOOK FOR THU JUL 4         107 (POOR).
OUTLOOK FOR FRI JUL 5         166 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 2-5 MPH.          NW 9-13 MPH.
TRANSPORT WINDS               W 6-10 MPH.         NW 9-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUL 4         GOOD.
OUTLOOK FOR FRI JUL 5         GOOD.

VENTILATION INDEX (CATEGORY)  131 (POOR).         543 (FAIR).
OUTLOOK FOR THU JUL 4         244 (POOR).
OUTLOOK FOR FRI JUL 5         451 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 6-13 MPH.        W 7-10 MPH.
TRANSPORT WINDS               SW 10-18 MPH.       NW 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR THU JUL 4         POOR.
OUTLOOK FOR FRI JUL 5         FAIR.

VENTILATION INDEX (CATEGORY)  155 (POOR).         404 (FAIR).
OUTLOOK FOR THU JUL 4         288 (POOR).
OUTLOOK FOR FRI JUL 5         443 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      491 (FAIR)
ELLENSBURG    733 (GOOD)
GOLDENDALE    485 (FAIR)
TRI-CITIES    364 (FAIR)
WALLA WALLA   323 (FAIR)
YAKIMA        270 (POOR)
BEND          230 (POOR)
PRINEVILLE    406 (FAIR)
ENTERPRISE    570 (FAIR)
HERMISTON     330 (FAIR)
JOHN DAY      631 (GOOD)
LA GRANDE     552 (FAIR)
MADRAS        305 (FAIR)
MEACHAM       308 (FAIR)
PENDLETON     366 (FAIR)
REDMOND       366 (FAIR)
SENECA        655 (GOOD)
THE DALLES    359 (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.
$$