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038
AUUS46 KPDT 181102
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT FRI APR 18 2014

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 12-20 MPH.       SW 15-25 MPH.
TRANSPORT WINDS               SW 12-20 MPH.       NW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SAT APR 19        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          1030 (GOOD).
OUTLOOK FOR SAT APR 19        849 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 10-18 MPH.       W 15-25 MPH.
TRANSPORT WINDS               SW 10-18 MPH.       NW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SAT APR 19        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          1033 (GOOD).
OUTLOOK FOR SAT APR 19        1044 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-12 MPH.        NW 15-20 MPH.
TRANSPORT WINDS               NW 10-18 MPH.       W 20-30 MPH.
MIXING HEIGHT                 4500 FT MSL.        9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT APR 19        GOOD.

VENTILATION INDEX (CATEGORY)  121 (POOR).         703 (GOOD).
OUTLOOK FOR SAT APR 19        974 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM     1049 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE    715 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA  1010 (GOOD)
YAKIMA       1050 (GOOD)
BEND          105 (POOR)
ENTERPRISE    817 (GOOD)
HERMISTON    1041 (GOOD)
JOHN DAY      540 (FAIR)
LA GRANDE     749 (GOOD)
MADRAS        262 (POOR)
MEACHAM       662 (GOOD)
PENDLETON     942 (GOOD)
REDMOND       172 (POOR)
SENECA        432 (FAIR)
THE DALLES    804 (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/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.

$$






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