Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281105
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
405 AM PDT TUE MAR 28 2017

*** 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 11-15 MPH.
TRANSPORT WINDS               S 9-13 MPH.         SW 17-23 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAR 29        GOOD.

VENTILATION INDEX (CATEGORY)  62 (POOR).          778 (GOOD).
OUTLOOK FOR WED MAR 29        348 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-10 MPH.        SW 11-14 MPH.
TRANSPORT WINDS               S 6-11 MPH.         SW 19-26 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED MAR 29        GOOD.

VENTILATION INDEX (CATEGORY)  36 (POOR).          602 (GOOD).
OUTLOOK FOR WED MAR 29        501 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-4 MPH.          SW 5-6 MPH.
TRANSPORT WINDS               SW 3-5 MPH.         SW 7-10 MPH.
MIXING HEIGHT                 5000 FT MSL.        6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED MAR 29        FAIR.

VENTILATION INDEX (CATEGORY)  85 (POOR).          269 (POOR).
OUTLOOK FOR WED MAR 29        177 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      115 (POOR)
ELLENSBURG    179 (POOR)
GOLDENDALE    614 (GOOD)
TRI-CITIES    828 (GOOD)
WALLA WALLA   772 (GOOD)
YAKIMA        315 (FAIR)
BEND          340 (FAIR)
PRINEVILLE    335 (FAIR)
ENTERPRISE    189 (POOR)
HERMISTON     758 (GOOD)
JOHN DAY      217 (POOR)
LA GRANDE     281 (POOR)
MADRAS        515 (FAIR)
MEACHAM       376 (FAIR)
PENDLETON     646 (GOOD)
REDMOND       336 (FAIR)
SENECA        220 (POOR)
THE DALLES    541 (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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