Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 031100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT FRI JUL 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                 SE-S 3-7 MPH.       SW-NW 5-10 MPH.
TRANSPORT WINDS               SE-S 3-7 MPH.       W 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       11500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT JUL 4         FAIR.

VENTILATION INDEX (CATEGORY)  118 (POOR).         555 (FAIR).
OUTLOOK FOR SAT JUL 4         585 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 6-12 MPH.        NW 5-10 MPH.
TRANSPORT WINDS               NW 6-12 MPH.        SW 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT JUL 4         FAIR.

VENTILATION INDEX (CATEGORY)  99 (POOR).          446 (FAIR).
OUTLOOK FOR SAT JUL 4         455 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-4 MPH.         NW 5-10 MPH.
TRANSPORT WINDS               NW 0-4 MPH.         W 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       12000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR SAT JUL 4         GOOD.

VENTILATION INDEX (CATEGORY)  28 (POOR).          382 (FAIR).
OUTLOOK FOR SAT JUL 4         449 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      394 (FAIR)
ELLENSBURG    669 (GOOD)
GOLDENDALE    387 (FAIR)
TRI-CITIES    597 (FAIR)
WALLA WALLA   517 (FAIR)
YAKIMA        565 (FAIR)
BEND          412 (FAIR)
PRINEVILLE    439 (FAIR)
ENTERPRISE    410 (FAIR)
HERMISTON     583 (FAIR)
JOHN DAY      532 (FAIR)
LA GRANDE     385 (FAIR)
MADRAS        449 (FAIR)
MEACHAM       404 (FAIR)
PENDLETON     501 (FAIR)
REDMOND       450 (FAIR)
SENECA        643 (GOOD)
THE DALLES    546 (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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