Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 251101
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
401 AM PDT SUN JUN 25 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 E-SE 4-8 MPH.       N-NE 4-8 MPH.
TRANSPORT WINDS               E-SE 4-8 MPH.       E-SE 4-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON JUN 26        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          140 (POOR).
OUTLOOK FOR MON JUN 26        451 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 3-8 MPH.       E 5-6 MPH.
TRANSPORT WINDS               W-NW 3-8 MPH.       E 4-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON JUN 26        FAIR.

VENTILATION INDEX (CATEGORY)  27 (POOR).          188 (POOR).
OUTLOOK FOR MON JUN 26        402 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-4 MPH.       S 5-9 MPH.
TRANSPORT WINDS               VRBL 2-4 MPH.       S 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON JUN 26        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          210 (POOR).
OUTLOOK FOR MON JUN 26        238 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      295 (POOR)
ELLENSBURG    342 (FAIR)
GOLDENDALE    253 (POOR)
TRI-CITIES    135 (POOR)
WALLA WALLA   138 (POOR)
YAKIMA        235 (POOR)
BEND          485 (FAIR)
PRINEVILLE    728 (GOOD)
ENTERPRISE    227 (POOR)
HERMISTON     137 (POOR)
JOHN DAY      334 (FAIR)
LA GRANDE     286 (POOR)
MADRAS        183 (POOR)
MEACHAM       255 (POOR)
PENDLETON     135 (POOR)
REDMOND       532 (FAIR)
SENECA        352 (FAIR)
THE DALLES    241 (POOR)

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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