Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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559
AUUS46 KPDT 291133
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
433 AM PDT THU SEP 29 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 0-3 MPH.         NW 3-6 MPH.
TRANSPORT WINDS               S 2-5 MPH.          SW 1-3 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI SEP 30        FAIR.

VENTILATION INDEX (CATEGORY)  26 (POOR).          96 (POOR).
OUTLOOK FOR FRI SEP 30        326 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-6 MPH.         SE 2-5 MPH.
TRANSPORT WINDS               NW 3-6 MPH.         S 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI SEP 30        GOOD.

VENTILATION INDEX (CATEGORY)  29 (POOR).          137 (POOR).
OUTLOOK FOR FRI SEP 30        606 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-4 MPH.         S 3-6 MPH.
TRANSPORT WINDS               SW 0-4 MPH.         SW 5-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI SEP 30        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          295 (POOR).
OUTLOOK FOR FRI SEP 30        1050 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       95 (POOR)
ELLENSBURG    244 (POOR)
GOLDENDALE    193 (POOR)
TRI-CITIES    110 (POOR)
WALLA WALLA   115 (POOR)
YAKIMA        157 (POOR)
BEND          491 (FAIR)
PRINEVILLE    312 (FAIR)
ENTERPRISE    474 (FAIR)
HERMISTON      70 (POOR)
JOHN DAY      521 (FAIR)
LA GRANDE     269 (POOR)
MADRAS        102 (POOR)
MEACHAM        63 (POOR)
PENDLETON      86 (POOR)
REDMOND       233 (POOR)
SENECA        718 (GOOD)
THE DALLES    204 (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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