Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 071211
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
411 AM PST WED DEC 7 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-5 MPH.         N 4-10 MPH.
TRANSPORT WINDS               E 2-6 MPH.          NE 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU DEC 8         POOR.

VENTILATION INDEX (CATEGORY)  27 (POOR).          91 (POOR).
OUTLOOK FOR THU DEC 8         88 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NE 0-4 MPH.         N 6-9 MPH.
TRANSPORT WINDS               NE 4-8 MPH.         NE 8-11 MPH.
MIXING HEIGHT                 2500 FT MSL.        3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU DEC 8         FAIR.

VENTILATION INDEX (CATEGORY)  68 (POOR).          157 (POOR).
OUTLOOK FOR THU DEC 8         162 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-3 MPH.         SE 0-4 MPH.
TRANSPORT WINDS               E 1-4 MPH.          SE 2-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU DEC 8         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          36 (POOR).
OUTLOOK FOR THU DEC 8         231 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      112 (POOR)
ELLENSBURG    125 (POOR)
GOLDENDALE    237 (POOR)
TRI-CITIES    117 (POOR)
WALLA WALLA    32 (POOR)
YAKIMA        201 (POOR)
BEND           77 (POOR)
PRINEVILLE     90 (POOR)
ENTERPRISE     66 (POOR)
HERMISTON     158 (POOR)
JOHN DAY       73 (POOR)
LA GRANDE      50 (POOR)
MADRAS         46 (POOR)
MEACHAM        86 (POOR)
PENDLETON     103 (POOR)
REDMOND        92 (POOR)
SENECA         90 (POOR)
THE DALLES    221 (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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