Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 271124
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
424 AM PDT TUE SEP 27 2016

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE-S 5-9 MPH.       W-NW 5-9 MPH.
TRANSPORT WINDS               SE-S 5-9 MPH.       W 3-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED SEP 28        POOR.

VENTILATION INDEX (CATEGORY)  30 (POOR).          177 (POOR).
OUTLOOK FOR WED SEP 28        118 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 4-8 MPH.       N-NE 3-6 MPH.
TRANSPORT WINDS               W-NW 4-8 MPH.       NW 4-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED SEP 28        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          242 (POOR).
OUTLOOK FOR WED SEP 28        138 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-8 MPH.       NW-N 5-7 MPH.
TRANSPORT WINDS               VRBL 2-8 MPH.       W 4-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED SEP 28        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          190 (POOR).
OUTLOOK FOR WED SEP 28        285 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      257 (POOR)
ELLENSBURG    604 (GOOD)
GOLDENDALE    113 (POOR)
TRI-CITIES    173 (POOR)
WALLA WALLA   215 (POOR)
YAKIMA        364 (FAIR)
BEND          162 (POOR)
PRINEVILLE    169 (POOR)
ENTERPRISE    241 (POOR)
HERMISTON     154 (POOR)
JOHN DAY      175 (POOR)
LA GRANDE     169 (POOR)
MADRAS        149 (POOR)
MEACHAM       164 (POOR)
PENDLETON     207 (POOR)
REDMOND       169 (POOR)
SENECA        183 (POOR)
THE DALLES    298 (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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