647
AUUS46 KPDT 191210
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
510 AM PDT WED JUN 19 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 3-7 MPH.         NE 6-11 MPH.
TRANSPORT WINDS               E 4-8 MPH.          NE 7-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 20        FAIR.
OUTLOOK FOR FRI JUN 21        FAIR.

VENTILATION INDEX (CATEGORY)  58 (POOR).          514 (FAIR).
OUTLOOK FOR THU JUN 20        361 (FAIR).
OUTLOOK FOR FRI JUN 21        374 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-5 MPH.         E 5-9 MPH.
TRANSPORT WINDS               N 5-7 MPH.          E 7-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 20        FAIR.
OUTLOOK FOR FRI JUN 21        FAIR.

VENTILATION INDEX (CATEGORY)  79 (POOR).          548 (FAIR).
OUTLOOK FOR THU JUN 20        617 (GOOD).
OUTLOOK FOR FRI JUN 21        172 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 2-4 MPH.         SE 3-6 MPH.
TRANSPORT WINDS               E 3-5 MPH.          S 7-11 MPH.
MIXING HEIGHT                 4000 FT MSL.        12000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUN 20        GOOD.
OUTLOOK FOR FRI JUN 21        GOOD.

VENTILATION INDEX (CATEGORY)  59 (POOR).          710 (GOOD).
OUTLOOK FOR THU JUN 20        345 (FAIR).
OUTLOOK FOR FRI JUN 21        463 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 4-8 MPH.         N 5-9 MPH.
TRANSPORT WINDS               SE 7-10 MPH.        N 4-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU JUN 20        FAIR.
OUTLOOK FOR FRI JUN 21        FAIR.

VENTILATION INDEX (CATEGORY)  74 (POOR).          344 (FAIR).
OUTLOOK FOR THU JUN 20        271 (POOR).
OUTLOOK FOR FRI JUN 21        305 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      732 (GOOD)
ELLENSBURG    647 (GOOD)
GOLDENDALE    758 (GOOD)
TRI-CITIES    528 (FAIR)
WALLA WALLA   291 (POOR)
YAKIMA        550 (FAIR)
BEND          438 (FAIR)
PRINEVILLE    329 (FAIR)
ENTERPRISE    604 (GOOD)
HERMISTON     560 (FAIR)
JOHN DAY     1046 (GOOD)
LA GRANDE     791 (GOOD)
MADRAS        220 (POOR)
MEACHAM       223 (POOR)
PENDLETON     563 (FAIR)
REDMOND       280 (POOR)
SENECA       1050 (GOOD)
THE DALLES    675 (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.
$$