Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 091200
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PST FRI DEC 9 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 3-7 MPH.       NW-NE 4-9 MPH.
TRANSPORT WINDS               VRBL 3-7 MPH.       SW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT DEC 10        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          55 (POOR).
OUTLOOK FOR SAT DEC 10        47 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          E 5-10 MPH.
TRANSPORT WINDS               SW 10-20 MPH.       SW 15-25 MPH.
MIXING HEIGHT                 2000 FT MSL.        2500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SAT DEC 10        FAIR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          74 (POOR).
OUTLOOK FOR SAT DEC 10        36 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 20-30 MPH.       S 15-25 MPH.
TRANSPORT WINDS               SW 20-30 MPH.       SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SAT DEC 10        FAIR.

VENTILATION INDEX (CATEGORY)  61 (POOR).          99 (POOR).
OUTLOOK FOR SAT DEC 10        213 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       89 (POOR)
ELLENSBURG     80 (POOR)
GOLDENDALE     55 (POOR)
TRI-CITIES     66 (POOR)
WALLA WALLA    25 (POOR)
YAKIMA         79 (POOR)
BEND          306 (FAIR)
PRINEVILLE     56 (POOR)
ENTERPRISE     81 (POOR)
HERMISTON      69 (POOR)
JOHN DAY      139 (POOR)
LA GRANDE     106 (POOR)
MADRAS         45 (POOR)
MEACHAM        94 (POOR)
PENDLETON      45 (POOR)
REDMOND        39 (POOR)
SENECA        178 (POOR)
THE DALLES     78 (POOR)

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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