Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 181206
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
505 AM PDT THU SEP 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 3-8 MPH.         W 10-18 MPH.
TRANSPORT WINDS               S 5-9 MPH.          SW 14-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI SEP 19        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          933 (GOOD).
OUTLOOK FOR FRI SEP 19        450 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-5 MPH.         W 7-14 MPH.
TRANSPORT WINDS               W 4-9 MPH.          W 10-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI SEP 19        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          871 (GOOD).
OUTLOOK FOR FRI SEP 19        287 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 0-5 MPH.          SW 6-10 MPH.
TRANSPORT WINDS               SW 3-5 MPH.         SW 9-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       11000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI SEP 19        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          744 (GOOD).
OUTLOOK FOR FRI SEP 19        254 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      322 (FAIR)
ELLENSBURG    737 (GOOD)
GOLDENDALE    749 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA   873 (GOOD)
YAKIMA        764 (GOOD)
BEND          444 (FAIR)
ENTERPRISE    771 (GOOD)
HERMISTON     968 (GOOD)
JOHN DAY      918 (GOOD)
LA GRANDE     757 (GOOD)
MADRAS        722 (GOOD)
MEACHAM       572 (FAIR)
PENDLETON     734 (GOOD)
REDMOND       494 (FAIR)
SENECA       1050 (GOOD)
THE DALLES    454 (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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