Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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347
AUUS46 KPDT 281206
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
406 AM PST TUE FEB 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                 SW 10-18 MPH.       W 12-17 MPH.
TRANSPORT WINDS               SW 9-19 MPH.        W 18-25 MPH.
MIXING HEIGHT                 2000 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED MAR 1         GOOD.

VENTILATION INDEX (CATEGORY)  121 (POOR).         946 (GOOD).
OUTLOOK FOR WED MAR 1         1050 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          W 10-13 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         W 16-23 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAR 1         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          647 (GOOD).
OUTLOOK FOR WED MAR 1         725 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 10-13 MPH.        W 11-12 MPH.
TRANSPORT WINDS               W 11-18 MPH.        W 16-19 MPH.
MIXING HEIGHT                 5500 FT MSL.        9500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED MAR 1         FAIR.

VENTILATION INDEX (CATEGORY)  354 (FAIR).         789 (GOOD).
OUTLOOK FOR WED MAR 1         533 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      790 (GOOD)
ELLENSBURG    736 (GOOD)
GOLDENDALE    848 (GOOD)
TRI-CITIES    742 (GOOD)
WALLA WALLA   838 (GOOD)
YAKIMA        304 (FAIR)
BEND         1017 (GOOD)
PRINEVILLE   1050 (GOOD)
ENTERPRISE   1012 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY     1050 (GOOD)
LA GRANDE     833 (GOOD)
MADRAS       1050 (GOOD)
MEACHAM       882 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND      1050 (GOOD)
SENECA       1050 (GOOD)
THE DALLES   1050 (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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