Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 051259
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
459 AM PST MON DEC 5 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 7-12 MPH.         SW 7-10 MPH.
TRANSPORT WINDS               S 7-12 MPH.         SW 12-16 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE DEC 6         FAIR.

VENTILATION INDEX (CATEGORY)  60 (POOR).          519 (FAIR).
OUTLOOK FOR TUE DEC 6         305 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW-W 4-7 MPH.       W 3-6 MPH.
TRANSPORT WINDS               SW-W 4-7 MPH.       SW 11-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE DEC 6         FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          242 (POOR).
OUTLOOK FOR TUE DEC 6         527 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 2-5 MPH.          S 9-11 MPH.
TRANSPORT WINDS               S 2-4 MPH.          S 10-12 MPH.
MIXING HEIGHT                 5500 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE DEC 6         FAIR.

VENTILATION INDEX (CATEGORY)  82 (POOR).          370 (FAIR).
OUTLOOK FOR TUE DEC 6         271 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      149 (POOR)
ELLENSBURG    139 (POOR)
GOLDENDALE    229 (POOR)
TRI-CITIES    288 (POOR)
WALLA WALLA   547 (FAIR)
YAKIMA        143 (POOR)
BEND          487 (FAIR)
PRINEVILLE    492 (FAIR)
ENTERPRISE    376 (FAIR)
HERMISTON     514 (FAIR)
JOHN DAY      390 (FAIR)
LA GRANDE     380 (FAIR)
MADRAS        598 (FAIR)
MEACHAM       488 (FAIR)
PENDLETON     605 (GOOD)
REDMOND       493 (FAIR)
SENECA        358 (FAIR)
THE DALLES    135 (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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