Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 011202
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
502 AM PDT TUE SEP 1 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SW 6-11 MPH.      W 11-15 MPH.
TRANSPORT WINDS               S-SW 6-11 MPH.      SW 16-21 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR WED SEP 2         GOOD.

VENTILATION INDEX (CATEGORY)  153 (POOR).         826 (GOOD).
OUTLOOK FOR WED SEP 2         1009 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-9 MPH.          SW 11-15 MPH.
TRANSPORT WINDS               W 3-9 MPH.          SW 14-19 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED SEP 2         GOOD.

VENTILATION INDEX (CATEGORY)  132 (POOR).         774 (GOOD).
OUTLOOK FOR WED SEP 2         1013 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 3-6 MPH.       W 7-12 MPH.
TRANSPORT WINDS               W-NW 3-6 MPH.       SW 12-14 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED SEP 2         FAIR.

VENTILATION INDEX (CATEGORY)  80 (POOR).          503 (FAIR).
OUTLOOK FOR WED SEP 2         356 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      848 (GOOD)
ELLENSBURG    881 (GOOD)
GOLDENDALE    770 (GOOD)
TRI-CITIES    931 (GOOD)
WALLA WALLA   743 (GOOD)
YAKIMA        650 (GOOD)
BEND          480 (FAIR)
PRINEVILLE    448 (FAIR)
ENTERPRISE    739 (GOOD)
HERMISTON     914 (GOOD)
JOHN DAY      692 (GOOD)
LA GRANDE     498 (FAIR)
MADRAS        489 (FAIR)
MEACHAM       365 (FAIR)
PENDLETON     537 (FAIR)
REDMOND       455 (FAIR)
SENECA        847 (GOOD)
THE DALLES    807 (GOOD)

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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