Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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137
AUUS46 KPDT 261130
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
430 AM PDT TUE JUL 26 2016

*** 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 7-13 MPH.      W-SW 8-12 MPH.
TRANSPORT WINDS               S-SW 7-13 MPH.      W-SW 9-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUL 27        POOR.

VENTILATION INDEX (CATEGORY)  145 (POOR).         526 (FAIR).
OUTLOOK FOR WED JUL 27        298 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 4-7 MPH.       NW 3-7 MPH.
TRANSPORT WINDS               W-NW 4-7 MPH.       W-NW 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JUL 27        POOR.

VENTILATION INDEX (CATEGORY)  68 (POOR).          360 (FAIR).
OUTLOOK FOR WED JUL 27        231 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 5-11 MPH.        NW 6-10 MPH.
TRANSPORT WINDS               NW 5-11 MPH.        NW 7-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUL 27        GOOD.

VENTILATION INDEX (CATEGORY)  33 (POOR).          342 (FAIR).
OUTLOOK FOR WED JUL 27        253 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      281 (POOR)
ELLENSBURG    471 (FAIR)
GOLDENDALE    276 (POOR)
TRI-CITIES    494 (FAIR)
WALLA WALLA   463 (FAIR)
YAKIMA        425 (FAIR)
BEND          244 (POOR)
PRINEVILLE    292 (POOR)
ENTERPRISE    396 (FAIR)
HERMISTON     544 (FAIR)
JOHN DAY      369 (FAIR)
LA GRANDE     362 (FAIR)
MADRAS        294 (POOR)
MEACHAM       280 (POOR)
PENDLETON     483 (FAIR)
REDMOND       292 (POOR)
SENECA        446 (FAIR)
THE DALLES    338 (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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