Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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784
AUUS46 KPDT 271147
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
447 AM PDT MON MAR 27 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 5-14 MPH.        W 12-16 MPH.
TRANSPORT WINDS               SW 10-21 MPH.       W 14-19 MPH.
MIXING HEIGHT                 2000 FT MSL.        8500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR TUE MAR 28        FAIR.

VENTILATION INDEX (CATEGORY)  92 (POOR).          962 (GOOD).
OUTLOOK FOR TUE MAR 28        706 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 3-10 MPH.        W 9-16 MPH.
TRANSPORT WINDS               W 3-11 MPH.         W 11-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAR 28        GOOD.

VENTILATION INDEX (CATEGORY)  29 (POOR).          677 (GOOD).
OUTLOOK FOR TUE MAR 28        441 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-8 MPH.          NW 6-10 MPH.
TRANSPORT WINDS               W 8-11 MPH.         NW 12-13 MPH.
MIXING HEIGHT                 4500 FT MSL.        9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAR 28        FAIR.

VENTILATION INDEX (CATEGORY)  113 (POOR).         701 (GOOD).
OUTLOOK FOR TUE MAR 28        242 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      163 (POOR)
ELLENSBURG    284 (POOR)
GOLDENDALE    718 (GOOD)
TRI-CITIES    786 (GOOD)
WALLA WALLA   936 (GOOD)
YAKIMA        383 (FAIR)
BEND          996 (GOOD)
PRINEVILLE    996 (GOOD)
ENTERPRISE    809 (GOOD)
HERMISTON    1050 (GOOD)
JOHN DAY      856 (GOOD)
LA GRANDE     770 (GOOD)
MADRAS       1050 (GOOD)
MEACHAM       662 (GOOD)
PENDLETON     999 (GOOD)
REDMOND      1050 (GOOD)
SENECA        735 (GOOD)
THE DALLES    919 (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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