Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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277
AUUS46 KPDT 251101
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT MON JUL 25 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-7 MPH.         SW-NW 4-9 MPH.
TRANSPORT WINDS               SE 3-7 MPH.         W 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE JUL 26        FAIR.

VENTILATION INDEX (CATEGORY)  46 (POOR).          242 (POOR).
OUTLOOK FOR TUE JUL 26        511 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          SW-NW 3-7 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE JUL 26        POOR.

VENTILATION INDEX (CATEGORY)  58 (POOR).          397 (FAIR).
OUTLOOK FOR TUE JUL 26        400 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         NE 3-7 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       11000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE JUL 26        GOOD.

VENTILATION INDEX (CATEGORY)  28 (POOR).          365 (FAIR).
OUTLOOK FOR TUE JUL 26        345 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      342 (FAIR)
ELLENSBURG    588 (FAIR)
GOLDENDALE    370 (FAIR)
TRI-CITIES    265 (POOR)
WALLA WALLA   231 (POOR)
YAKIMA        414 (FAIR)
BEND          310 (FAIR)
PRINEVILLE    322 (FAIR)
ENTERPRISE    591 (FAIR)
HERMISTON     223 (POOR)
JOHN DAY      422 (FAIR)
LA GRANDE     369 (FAIR)
MADRAS        320 (FAIR)
MEACHAM       318 (FAIR)
PENDLETON     263 (POOR)
REDMOND       328 (FAIR)
SENECA        280 (POOR)
THE DALLES    470 (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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