Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 251100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT FRI JUL 25 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 3-7 MPH.         SW 5-10 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         SW 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUL 26        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          315 (FAIR).
OUTLOOK FOR SAT JUL 26        404 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-9 MPH.         W 5-10 MPH.
TRANSPORT WINDS               NW 4-9 MPH.         NW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUL 26        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          180 (POOR).
OUTLOOK FOR SAT JUL 26        357 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        NW 5-10 MPH.
TRANSPORT WINDS               NW 5-10 MPH.        SW 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT JUL 26        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          144 (POOR).
OUTLOOK FOR SAT JUL 26        294 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      310 (FAIR)
ELLENSBURG    320 (FAIR)
GOLDENDALE    193 (POOR)
TRI-CITIES    354 (FAIR)
WALLA WALLA   282 (POOR)
YAKIMA        117 (POOR)
BEND          131 (POOR)
ENTERPRISE    241 (POOR)
HERMISTON     325 (FAIR)
JOHN DAY      306 (FAIR)
LA GRANDE     135 (POOR)
MADRAS         92 (POOR)
MEACHAM       187 (POOR)
PENDLETON     232 (POOR)
REDMOND       124 (POOR)
SENECA        316 (FAIR)
THE DALLES    192 (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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