Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 301100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT TUE SEP 30 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 13-22 MPH.       W 15-25 MPH.
TRANSPORT WINDS               SW 13-22 MPH.       NW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR WED OCT 1         FAIR.

VENTILATION INDEX (CATEGORY)  56 (POOR).          1050 (GOOD).
OUTLOOK FOR WED OCT 1         589 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 7-13 MPH.        NW 15-25 MPH.
TRANSPORT WINDS               NW 7-13 MPH.        NW 20-30 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED OCT 1         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          988 (GOOD).
OUTLOOK FOR WED OCT 1         280 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-10 MPH.        NW 10-15 MPH.
TRANSPORT WINDS               NW 15-20 MPH.       NW 15-25 MPH.
MIXING HEIGHT                 4500 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED OCT 1         POOR.

VENTILATION INDEX (CATEGORY)  149 (POOR).         533 (FAIR).
OUTLOOK FOR WED OCT 1         210 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      392 (FAIR)
ELLENSBURG    628 (GOOD)
GOLDENDALE    799 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA  1050 (GOOD)
YAKIMA       1050 (GOOD)
BEND          593 (FAIR)
ENTERPRISE    400 (FAIR)
HERMISTON    1050 (GOOD)
JOHN DAY      505 (FAIR)
LA GRANDE     623 (GOOD)
MADRAS        732 (GOOD)
MEACHAM       805 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND       571 (FAIR)
SENECA        759 (GOOD)
THE DALLES    937 (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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