985
AUUS46 KPDT 211149
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
449 AM PDT FRI JUN 21 2024

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-5 MPH.         N 5-9 MPH.
TRANSPORT WINDS               NW 2-5 MPH.         N 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUN 22        FAIR.
OUTLOOK FOR SUN JUN 23        GOOD.

VENTILATION INDEX (CATEGORY)  41 (POOR).          355 (FAIR).
OUTLOOK FOR SAT JUN 22        315 (FAIR).
OUTLOOK FOR SUN JUN 23        973 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 WNW 2-5 MPH.        SE 4-8 MPH.
TRANSPORT WINDS               WNW 2-5 MPH.        SW 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       11000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUN 22        FAIR.
OUTLOOK FOR SUN JUN 23        GOOD.

VENTILATION INDEX (CATEGORY)  64 (POOR).          325 (FAIR).
OUTLOOK FOR SAT JUN 22        478 (FAIR).
OUTLOOK FOR SUN JUN 23        869 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 1-3 MPH.        N 7-10 MPH.
TRANSPORT WINDS               N 5-6 MPH.          NW 8-10 MPH.
MIXING HEIGHT                 4000 FT MSL.        10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT JUN 22        FAIR.
OUTLOOK FOR SUN JUN 23        GOOD.

VENTILATION INDEX (CATEGORY)  97 (POOR).          500 (FAIR).
OUTLOOK FOR SAT JUN 22        235 (POOR).
OUTLOOK FOR SUN JUN 23        549 (FAIR).

FOR THE BASE OF THE NORTHERN BLUE MOUNTAINS

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 2-5 MPH.         N 5-8 MPH.
TRANSPORT WINDS               SSE 2-5 MPH.        N 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUN 22        FAIR.
OUTLOOK FOR SUN JUN 23        GOOD.

VENTILATION INDEX (CATEGORY)  29 (POOR).          338 (FAIR).
OUTLOOK FOR SAT JUN 22        220 (POOR).
OUTLOOK FOR SUN JUN 23        812 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      555 (FAIR)
ELLENSBURG    516 (FAIR)
GOLDENDALE    364 (FAIR)
TRI-CITIES    265 (POOR)
WALLA WALLA   275 (POOR)
YAKIMA        493 (FAIR)
BEND          416 (FAIR)
PRINEVILLE    457 (FAIR)
ENTERPRISE    530 (FAIR)
HERMISTON     300 (POOR)
JOHN DAY      691 (GOOD)
LA GRANDE     535 (FAIR)
MADRAS        350 (FAIR)
MEACHAM       292 (POOR)
PENDLETON     441 (FAIR)
REDMOND       421 (FAIR)
SENECA        790 (GOOD)
THE DALLES     85 (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.

$$