Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 161106
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
406 AM PDT WED APR 16 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 5-10 MPH.        SW 11-14 MPH.
TRANSPORT WINDS               SW 5-10 MPH.        SW 15-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU APR 17        FAIR.

VENTILATION INDEX (CATEGORY)  58 (POOR).          901 (GOOD).
OUTLOOK FOR THU APR 17        254 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          W 9-12 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 8-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU APR 17        FAIR.

VENTILATION INDEX (CATEGORY)  28 (POOR).          530 (FAIR).
OUTLOOK FOR THU APR 17        291 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 3-6 MPH.         SW 7-8 MPH.
TRANSPORT WINDS               SW 3-6 MPH.         SW 6-8 MPH.
MIXING HEIGHT                 4000 FT MSL.        8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU APR 17        FAIR.

VENTILATION INDEX (CATEGORY)  52 (POOR).          337 (FAIR).
OUTLOOK FOR THU APR 17        348 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      175 (POOR)
ELLENSBURG    259 (POOR)
GOLDENDALE    479 (FAIR)
TRI-CITIES    933 (GOOD)
WALLA WALLA   844 (GOOD)
YAKIMA        468 (FAIR)
BEND          261 (POOR)
ENTERPRISE    291 (POOR)
HERMISTON     957 (GOOD)
JOHN DAY      299 (POOR)
LA GRANDE     346 (FAIR)
MADRAS        398 (FAIR)
MEACHAM       398 (FAIR)
PENDLETON     697 (GOOD)
REDMOND       289 (POOR)
SENECA        331 (FAIR)
THE DALLES    423 (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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