873
AUUS46 KPDT 201215
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
515 AM PDT THU JUN 20 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 3-7 MPH.          N 7-12 MPH.
TRANSPORT WINDS               N 4-12 MPH.         NE 10-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUN 21        FAIR.
OUTLOOK FOR SAT JUN 22        FAIR.

VENTILATION INDEX (CATEGORY)  71 (POOR).          621 (GOOD).
OUTLOOK FOR FRI JUN 21        296 (POOR).
OUTLOOK FOR SAT JUN 22        384 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-8 MPH.         NE 7-10 MPH.
TRANSPORT WINDS               N 6-12 MPH.         NE 8-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUN 21        POOR.
OUTLOOK FOR SAT JUN 22        FAIR.

VENTILATION INDEX (CATEGORY)  139 (POOR).         686 (GOOD).
OUTLOOK FOR FRI JUN 21        323 (FAIR).
OUTLOOK FOR SAT JUN 22        521 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 1-3 MPH.         E 4-8 MPH.
TRANSPORT WINDS               N 3-6 MPH.          SE 9-13 MPH.
MIXING HEIGHT                 4000 FT MSL.        9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI JUN 21        GOOD.
OUTLOOK FOR SAT JUN 22        FAIR.

VENTILATION INDEX (CATEGORY)  46 (POOR).          491 (FAIR).
OUTLOOK FOR FRI JUN 21        432 (FAIR).
OUTLOOK FOR SAT JUN 22        333 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-6 MPH.         N 7-10 MPH.
TRANSPORT WINDS               E 5-9 MPH.          NE 9-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI JUN 21        FAIR.
OUTLOOK FOR SAT JUN 22        FAIR.

VENTILATION INDEX (CATEGORY)  45 (POOR).          417 (FAIR).
OUTLOOK FOR FRI JUN 21        280 (POOR).
OUTLOOK FOR SAT JUN 22        290 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      447 (FAIR)
ELLENSBURG    583 (FAIR)
GOLDENDALE    811 (GOOD)
TRI-CITIES    729 (GOOD)
WALLA WALLA   377 (FAIR)
YAKIMA        672 (GOOD)
BEND          481 (FAIR)
PRINEVILLE    507 (FAIR)
ENTERPRISE    379 (FAIR)
HERMISTON     711 (GOOD)
JOHN DAY     1050 (GOOD)
LA GRANDE     649 (GOOD)
MADRAS        635 (GOOD)
MEACHAM       366 (FAIR)
PENDLETON     519 (FAIR)
REDMOND       546 (FAIR)
SENECA       1050 (GOOD)
THE DALLES    686 (GOOD)

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.
$$