Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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AUUS46 KPDT 041229
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
429 AM PST SUN DEC 4 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 14-20 MPH.       W 22-28 MPH.
TRANSPORT WINDS               SW 14-20 MPH.       W 21-26 MPH.
MIXING HEIGHT                 2500 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR MON DEC 5         FAIR.

VENTILATION INDEX (CATEGORY)  274 (POOR).         940 (GOOD).
OUTLOOK FOR MON DEC 5         461 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW-W 8-18 MPH.      W 17-24 MPH.
TRANSPORT WINDS               SW-W 8-18 MPH.      W-NW 21-26 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR MON DEC 5         FAIR.

VENTILATION INDEX (CATEGORY)  92 (POOR).          1048 (GOOD).
OUTLOOK FOR MON DEC 5         126 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 10-14 MPH.        W 14-18 MPH.
TRANSPORT WINDS               S 10-14 MPH.        W 11-18 MPH.
MIXING HEIGHT                 4000 FT MSL.        5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON DEC 5         FAIR.

VENTILATION INDEX (CATEGORY)  137 (POOR).         239 (POOR).
OUTLOOK FOR MON DEC 5         325 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      874 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE    732 (GOOD)
TRI-CITIES    979 (GOOD)
WALLA WALLA   868 (GOOD)
YAKIMA       1042 (GOOD)
BEND          354 (FAIR)
PRINEVILLE    341 (FAIR)
ENTERPRISE    356 (FAIR)
HERMISTON     982 (GOOD)
JOHN DAY      196 (POOR)
LA GRANDE     253 (POOR)
MADRAS        457 (FAIR)
MEACHAM       531 (FAIR)
PENDLETON     879 (GOOD)
REDMOND       437 (FAIR)
SENECA        299 (POOR)
THE DALLES    770 (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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