880
AUUS46 KPDT 041211
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
511 AM PDT TUE JUN 4 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 6-12 MPH.        W 18-25 MPH.
TRANSPORT WINDS               SW 7-13 MPH.        SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUN 5         FAIR.
OUTLOOK FOR THU JUN 6         POOR.

VENTILATION INDEX (CATEGORY)  58 (POOR).          514 (FAIR).
OUTLOOK FOR WED JUN 5         298 (POOR).
OUTLOOK FOR THU JUN 6         172 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 6-12 MPH.        SW 15-25 MPH.
TRANSPORT WINDS               SW 7-13 MPH.        W 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED JUN 5         POOR.
OUTLOOK FOR THU JUN 6         POOR.

VENTILATION INDEX (CATEGORY)  159 (POOR).         1041 (GOOD).
OUTLOOK FOR WED JUN 5         173 (POOR).
OUTLOOK FOR THU JUN 6         119 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-12 MPH.         W 7-13 MPH.
TRANSPORT WINDS               S 6-12 MPH.         SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUN 5         FAIR.
OUTLOOK FOR THU JUN 6         POOR.

VENTILATION INDEX (CATEGORY)  68 (POOR).          360 (FAIR).
OUTLOOK FOR WED JUN 5         216 (POOR).
OUTLOOK FOR THU JUN 6         124 (POOR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 6-12 MPH.        SW 15-20 MPH.
TRANSPORT WINDS               S 7-13 MPH.         SW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED JUN 5         FAIR.
OUTLOOK FOR THU JUN 6         POOR.

VENTILATION INDEX (CATEGORY)  81 (POOR).          266 (POOR).
OUTLOOK FOR WED JUN 5         288 (POOR).
OUTLOOK FOR THU JUN 6         140 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      683 (GOOD)
ELLENSBURG   1040 (GOOD)
GOLDENDALE    378 (FAIR)
TRI-CITIES    967 (GOOD)
WALLA WALLA   142 (POOR)
YAKIMA       1050 (GOOD)
BEND         1050 (GOOD)
PRINEVILLE   1050 (GOOD)
ENTERPRISE    558 (FAIR)
HERMISTON     622 (GOOD)
JOHN DAY     1050 (GOOD)
LA GRANDE     522 (FAIR)
MADRAS       1050 (GOOD)
MEACHAM       217 (POOR)
PENDLETON     341 (FAIR)
REDMOND      1050 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    430 (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.
$$