315
AUUS46 KPDT 181250
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
550 AM PDT TUE JUN 18 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 8-15 MPH.        W 6-9 MPH.
TRANSPORT WINDS               SW 8-13 MPH.        SW 6-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUN 19        FAIR.
OUTLOOK FOR THU JUN 20        FAIR.

VENTILATION INDEX (CATEGORY)  187 (POOR).         417 (FAIR).
OUTLOOK FOR WED JUN 19        423 (FAIR).
OUTLOOK FOR THU JUN 20        481 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-5 MPH.          SE 3-6 MPH.
TRANSPORT WINDS               W 3-6 MPH.          SE 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JUN 19        FAIR.
OUTLOOK FOR THU JUN 20        FAIR.

VENTILATION INDEX (CATEGORY)  66 (POOR).          267 (POOR).
OUTLOOK FOR WED JUN 19        451 (FAIR).
OUTLOOK FOR THU JUN 20        780 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-3 MPH.         S 2-5 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         SW 5-9 MPH.
MIXING HEIGHT                 4500 FT MSL.        10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUN 19        GOOD.
OUTLOOK FOR THU JUN 20        GOOD.

VENTILATION INDEX (CATEGORY)  102 (POOR).         394 (FAIR).
OUTLOOK FOR WED JUN 19        566 (FAIR).
OUTLOOK FOR THU JUN 20        438 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-13 MPH.         NW 5-6 MPH.
TRANSPORT WINDS               SW 9-16 MPH.        SW 6-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR WED JUN 19        FAIR.
OUTLOOK FOR THU JUN 20        FAIR.

VENTILATION INDEX (CATEGORY)  191 (POOR).         375 (FAIR).
OUTLOOK FOR WED JUN 19        318 (FAIR).
OUTLOOK FOR THU JUN 20        345 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      317 (FAIR)
ELLENSBURG    309 (FAIR)
GOLDENDALE    381 (FAIR)
TRI-CITIES    404 (FAIR)
WALLA WALLA   396 (FAIR)
YAKIMA        287 (POOR)
BEND          126 (POOR)
PRINEVILLE    154 (POOR)
ENTERPRISE    346 (FAIR)
HERMISTON     346 (FAIR)
JOHN DAY      486 (FAIR)
LA GRANDE     419 (FAIR)
MADRAS        159 (POOR)
MEACHAM       315 (FAIR)
PENDLETON     356 (FAIR)
REDMOND       125 (POOR)
SENECA        620 (GOOD)
THE DALLES    210 (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.
$$