Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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260
AUUS46 KPDT 031308
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
508 AM PST SAT DEC 3 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 8-16 MPH.        SW 16-20 MPH.
TRANSPORT WINDS               SW 15-28 MPH.       W 24-31 MPH.
MIXING HEIGHT                 2000 FT MSL.        5000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR SUN DEC 4         GOOD.

VENTILATION INDEX (CATEGORY)  324 (FAIR).         806 (GOOD).
OUTLOOK FOR SUN DEC 4         860 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-6 MPH.        W 9-16 MPH.
TRANSPORT WINDS               S 3-11 MPH.         W 11-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN DEC 4         GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          337 (FAIR).
OUTLOOK FOR SUN DEC 4         943 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-15 MPH.         SW 5-10 MPH.
TRANSPORT WINDS               SW 7-10 MPH.        W 8-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR SUN DEC 4         FAIR.

VENTILATION INDEX (CATEGORY)  81 (POOR).          251 (POOR).
OUTLOOK FOR SUN DEC 4         274 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      354 (FAIR)
ELLENSBURG    463 (FAIR)
GOLDENDALE    487 (FAIR)
TRI-CITIES    391 (FAIR)
WALLA WALLA   914 (GOOD)
YAKIMA        207 (POOR)
BEND          142 (POOR)
PRINEVILLE    224 (POOR)
ENTERPRISE    197 (POOR)
HERMISTON     699 (GOOD)
JOHN DAY      123 (POOR)
LA GRANDE     306 (FAIR)
MADRAS        301 (FAIR)
MEACHAM       606 (GOOD)
PENDLETON    1050 (GOOD)
REDMOND       213 (POOR)
SENECA        163 (POOR)
THE DALLES    375 (FAIR)

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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