Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 271208
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
505 AM PDT THU AUG 27 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-5 MPH.        W 9-12 MPH.
TRANSPORT WINDS               S 8-14 MPH.         SW 10-17 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 28        GOOD.

VENTILATION INDEX (CATEGORY)  72 (POOR).          1011 (GOOD).
OUTLOOK FOR FRI AUG 28        857 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-5 MPH.        SW 10-13 MPH.
TRANSPORT WINDS               W 4-9 MPH.          SW 14-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       11000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          1048 (GOOD).
OUTLOOK FOR FRI AUG 28        1042 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-5 MPH.         NW 4-7 MPH.
TRANSPORT WINDS               SW 0-3 MPH.         W 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       13000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI AUG 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          581 (FAIR).
OUTLOOK FOR FRI AUG 28        1050 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      742 (GOOD)
ELLENSBURG   1050 (GOOD)
GOLDENDALE   1050 (GOOD)
TRI-CITIES   1050 (GOOD)
WALLA WALLA   969 (GOOD)
YAKIMA       1037 (GOOD)
BEND          788 (GOOD)
PRINEVILLE    796 (GOOD)
ENTERPRISE    557 (FAIR)
HERMISTON    1050 (GOOD)
JOHN DAY      774 (GOOD)
LA GRANDE     572 (FAIR)
MADRAS        793 (GOOD)
MEACHAM       601 (GOOD)
PENDLETON     804 (GOOD)
REDMOND       772 (GOOD)
SENECA        907 (GOOD)
THE DALLES    711 (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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