Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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864
AUUS46 KPDT 301144
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
444 AM PDT FRI SEP 30 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-11 MPH.         W 6-10 MPH.
TRANSPORT WINDS               S 6-11 MPH.         W 9-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SAT OCT 1         GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          415 (FAIR).
OUTLOOK FOR SAT OCT 1         830 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 5-8 MPH.          SW 7-9 MPH.
TRANSPORT WINDS               W 5-8 MPH.          SW 14-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT OCT 1         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          529 (FAIR).
OUTLOOK FOR SAT OCT 1         1012 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-4 MPH.          S 12-17 MPH.
TRANSPORT WINDS               W 2-4 MPH.          S 16-21 MPH.
MIXING HEIGHT                 NEAR SURFACE.       14000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT OCT 1         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          1027 (GOOD).
OUTLOOK FOR SAT OCT 1         358 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      240 (POOR)
ELLENSBURG    374 (FAIR)
GOLDENDALE    622 (GOOD)
TRI-CITIES    616 (GOOD)
WALLA WALLA   228 (POOR)
YAKIMA        353 (FAIR)
BEND          864 (GOOD)
PRINEVILLE    792 (GOOD)
ENTERPRISE   1050 (GOOD)
HERMISTON     552 (FAIR)
JOHN DAY     1050 (GOOD)
LA GRANDE    1050 (GOOD)
MADRAS        668 (GOOD)
MEACHAM       386 (FAIR)
PENDLETON     213 (POOR)
REDMOND       753 (GOOD)
SENECA       1050 (GOOD)
THE DALLES    713 (GOOD)

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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