Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 280926
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
226 AM PDT WED JUN 28 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SW 5-10 MPH.      SW 10-15 MPH.
TRANSPORT WINDS               S-SW 5-10 MPH.      NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUN 29        POOR.

VENTILATION INDEX (CATEGORY)  123 (POOR).         867 (GOOD).
OUTLOOK FOR THU JUN 29        332 (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 10-15 MPH.
TRANSPORT WINDS               NW 7-13 MPH.        NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUN 29        POOR.

VENTILATION INDEX (CATEGORY)  60 (POOR).          811 (GOOD).
OUTLOOK FOR THU JUN 29        289 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-7 MPH.         W 5-10 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         NW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU JUN 29        FAIR.

VENTILATION INDEX (CATEGORY)  47 (POOR).          578 (FAIR).
OUTLOOK FOR THU JUN 29        121 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      442 (FAIR)
ELLENSBURG    873 (GOOD)
GOLDENDALE    477 (FAIR)
TRI-CITIES    904 (GOOD)
WALLA WALLA   918 (GOOD)
YAKIMA       1050 (GOOD)
BEND          806 (GOOD)
PRINEVILLE    760 (GOOD)
ENTERPRISE    632 (GOOD)
HERMISTON     805 (GOOD)
JOHN DAY      840 (GOOD)
LA GRANDE     601 (GOOD)
MADRAS        712 (GOOD)
MEACHAM       547 (FAIR)
PENDLETON     827 (GOOD)
REDMOND       845 (GOOD)
SENECA        873 (GOOD)
THE DALLES    633 (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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