Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 311107
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
407 AM PDT TUE MAY 31 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 3-6 MPH.         NE 5-9 MPH.
TRANSPORT WINDS               SE 4-9 MPH.         NE 5-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR WED JUN 1         FAIR.

VENTILATION INDEX (CATEGORY)  40 (POOR).          400 (FAIR).
OUTLOOK FOR WED JUN 1         566 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-5 MPH.         SE 3-6 MPH.
TRANSPORT WINDS               NW 4-8 MPH.         SE 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR WED JUN 1         GOOD.

VENTILATION INDEX (CATEGORY)  38 (POOR).          271 (POOR).
OUTLOOK FOR WED JUN 1         850 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 ENE 0-3 MPH.        NE 4-7 MPH.
TRANSPORT WINDS               NE 2-5 MPH.         NE 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR WED JUN 1         GOOD.

VENTILATION INDEX (CATEGORY)  41 (POOR).          298 (POOR).
OUTLOOK FOR WED JUN 1         781 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      362 (FAIR)
ELLENSBURG    389 (FAIR)
GOLDENDALE    371 (FAIR)
TRI-CITIES    416 (FAIR)
WALLA WALLA   342 (FAIR)
YAKIMA        220 (POOR)
BEND          170 (POOR)
PRINEVILLE    119 (POOR)
ENTERPRISE    276 (POOR)
HERMISTON     420 (FAIR)
JOHN DAY      134 (POOR)
LA GRANDE     268 (POOR)
MADRAS        220 (POOR)
MEACHAM       223 (POOR)
PENDLETON     342 (FAIR)
REDMOND       127 (POOR)
SENECA        160 (POOR)
THE DALLES    395 (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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