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651
AUUS46 KPDT 231200
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
500 AM PDT WED APR 23 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 12-18 MPH.       SW-W 17-23 MPH.
TRANSPORT WINDS               SW 14-18 MPH.       SW 21-25 MPH.
MIXING HEIGHT                 2000 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR THU APR 24        GOOD.

VENTILATION INDEX (CATEGORY)  192 (POOR).         991 (GOOD).
OUTLOOK FOR THU APR 24        1034 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 4-13 MPH.        SW 13-17 MPH.
TRANSPORT WINDS               SW 4-13 MPH.        SW 13-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU APR 24        GOOD.

VENTILATION INDEX (CATEGORY)  92 (POOR).          665 (GOOD).
OUTLOOK FOR THU APR 24        1050 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 7-10 MPH.         W 11-13 MPH.
TRANSPORT WINDS               S-SW 7-9 MPH.       SW-W 14-16 MPH.
MIXING HEIGHT                 4000 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU APR 24        FAIR.

VENTILATION INDEX (CATEGORY)  71 (POOR).          792 (GOOD).
OUTLOOK FOR THU APR 24        441 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      307 (FAIR)
ELLENSBURG    399 (FAIR)
GOLDENDALE    398 (FAIR)
TRI-CITIES    950 (GOOD)
WALLA WALLA   737 (GOOD)
YAKIMA        497 (FAIR)
BEND         1050 (GOOD)
ENTERPRISE   1050 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY     1050 (GOOD)
LA GRANDE     780 (GOOD)
MADRAS       1050 (GOOD)
MEACHAM       859 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND      1050 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    348 (FAIR)

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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