Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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329
AUUS46 KPDT 061209
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
409 AM PST TUE DEC 6 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 5-10 MPH.      W-NW 6-12 MPH.
TRANSPORT WINDS               W-NW 5-10 MPH.      NW 10-17 MPH.
MIXING HEIGHT                 3500 FT MSL.        4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED DEC 7         POOR.

VENTILATION INDEX (CATEGORY)  129 (POOR).         310 (FAIR).
OUTLOOK FOR WED DEC 7         98 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 5-11 MPH.      N 5-10 MPH.
TRANSPORT WINDS               W-NW 5-11 MPH.      N 13-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED DEC 7         POOR.

VENTILATION INDEX (CATEGORY)  109 (POOR).         539 (FAIR).
OUTLOOK FOR WED DEC 7         172 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 5-9 MPH.          NW 5-10 MPH.
TRANSPORT WINDS               S 5-9 MPH.          NW 11-13 MPH.
MIXING HEIGHT                 4000 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED DEC 7         POOR.

VENTILATION INDEX (CATEGORY)  70 (POOR).          313 (FAIR).
OUTLOOK FOR WED DEC 7         53 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      168 (POOR)
ELLENSBURG    268 (POOR)
GOLDENDALE    450 (FAIR)
TRI-CITIES    386 (FAIR)
WALLA WALLA   227 (POOR)
YAKIMA        524 (FAIR)
BEND          588 (FAIR)
PRINEVILLE    525 (FAIR)
ENTERPRISE    373 (FAIR)
HERMISTON     370 (FAIR)
JOHN DAY      561 (FAIR)
LA GRANDE     326 (FAIR)
MADRAS        390 (FAIR)
MEACHAM       366 (FAIR)
PENDLETON     347 (FAIR)
REDMOND       531 (FAIR)
SENECA        610 (GOOD)
THE DALLES    213 (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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