Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 031209
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
509 AM PDT THU SEP 3 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 5-11 MPH.        W-SW 9-14 MPH.
TRANSPORT WINDS               SW 5-11 MPH.        SW 9-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI SEP 4         FAIR.

VENTILATION INDEX (CATEGORY)  108 (POOR).         777 (GOOD).
OUTLOOK FOR FRI SEP 4         408 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 6-9 MPH.          SW 6-9 MPH.
TRANSPORT WINDS               W 6-9 MPH.          W-SW 7-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI SEP 4         FAIR.

VENTILATION INDEX (CATEGORY)  73 (POOR).          499 (FAIR).
OUTLOOK FOR FRI SEP 4         552 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-9 MPH.         NW 7-11 MPH.
TRANSPORT WINDS               NW 6-9 MPH.         NW 7-10 MPH.
MIXING HEIGHT                 4500 FT MSL.        9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI SEP 4         GOOD.

VENTILATION INDEX (CATEGORY)  161 (POOR).         348 (FAIR).
OUTLOOK FOR FRI SEP 4         615 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      470 (FAIR)
ELLENSBURG    638 (GOOD)
GOLDENDALE    677 (GOOD)
TRI-CITIES    753 (GOOD)
WALLA WALLA   685 (GOOD)
YAKIMA        398 (FAIR)
BEND          297 (POOR)
PRINEVILLE    407 (FAIR)
ENTERPRISE    248 (POOR)
HERMISTON     890 (GOOD)
JOHN DAY      347 (FAIR)
LA GRANDE     361 (FAIR)
MADRAS        439 (FAIR)
MEACHAM       399 (FAIR)
PENDLETON     691 (GOOD)
REDMOND       368 (FAIR)
SENECA        308 (FAIR)
THE DALLES    811 (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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