Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281109
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
410 AM PDT THU AUG 28 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 5-10 MPH.        SW-W 10-15 MPH.
TRANSPORT WINDS               SW 5-10 MPH.        SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 29        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          891 (GOOD).
OUTLOOK FOR FRI AUG 29        838 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-8 MPH.         W 10-15 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 29        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          598 (FAIR).
OUTLOOK FOR FRI AUG 29        559 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 4-8 MPH.         W 5-10 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 29        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          424 (FAIR).
OUTLOOK FOR FRI AUG 29        348 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      408 (FAIR)
ELLENSBURG    575 (FAIR)
GOLDENDALE    542 (FAIR)
TRI-CITIES    818 (GOOD)
WALLA WALLA   905 (GOOD)
YAKIMA        586 (FAIR)
BEND          370 (FAIR)
ENTERPRISE    482 (FAIR)
HERMISTON     903 (GOOD)
JOHN DAY      391 (FAIR)
LA GRANDE     460 (FAIR)
MADRAS        377 (FAIR)
MEACHAM       524 (FAIR)
PENDLETON     885 (GOOD)
REDMOND       347 (FAIR)
SENECA        574 (FAIR)
THE DALLES    592 (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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