Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281101
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT TUE JUL 28 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SW 4-9 MPH.       SW-NW 5-10 MPH.
TRANSPORT WINDS               S-SW 4-9 MPH.       NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUL 29        FAIR.

VENTILATION INDEX (CATEGORY)  65 (POOR).          556 (FAIR).
OUTLOOK FOR WED JUL 29        285 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        SE 5-10 MPH.
TRANSPORT WINDS               NW 5-10 MPH.        NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUL 29        FAIR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          382 (FAIR).
OUTLOOK FOR WED JUL 29        506 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         N 3-7 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUL 29        GOOD.

VENTILATION INDEX (CATEGORY)  52 (POOR).          427 (FAIR).
OUTLOOK FOR WED JUL 29        470 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      379 (FAIR)
ELLENSBURG    448 (FAIR)
GOLDENDALE    287 (POOR)
TRI-CITIES    609 (GOOD)
WALLA WALLA   612 (GOOD)
YAKIMA        357 (FAIR)
BEND          231 (POOR)
PRINEVILLE    153 (POOR)
ENTERPRISE    244 (POOR)
HERMISTON     508 (FAIR)
JOHN DAY      359 (FAIR)
LA GRANDE     428 (FAIR)
MADRAS        126 (POOR)
MEACHAM       346 (FAIR)
PENDLETON     464 (FAIR)
REDMOND       147 (POOR)
SENECA        332 (FAIR)
THE DALLES    161 (POOR)

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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