Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281207
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
507 AM PDT SUN MAY 28 2017

*** 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.         NNE 3-6 MPH.
TRANSPORT WINDS               SE 3-6 MPH.         SSE 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON MAY 29        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          195 (POOR).
OUTLOOK FOR MON MAY 29        306 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 3-6 MPH.         ESE 3-6 MPH.
TRANSPORT WINDS               NW 4-7 MPH.         SSW 4-7 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON MAY 29        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          99 (POOR).
OUTLOOK FOR MON MAY 29        420 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-6 MPH.         S 4-7 MPH.
TRANSPORT WINDS               S 4-7 MPH.          S 6-12 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON MAY 29        GOOD.

VENTILATION INDEX (CATEGORY)  28 (POOR).          559 (FAIR).
OUTLOOK FOR MON MAY 29        436 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      278 (POOR)
ELLENSBURG    238 (POOR)
GOLDENDALE    348 (FAIR)
TRI-CITIES     33 (POOR)
WALLA WALLA   386 (FAIR)
YAKIMA        149 (POOR)
BEND          631 (GOOD)
PRINEVILLE    645 (GOOD)
ENTERPRISE    298 (POOR)
HERMISTON      97 (POOR)
JOHN DAY      410 (FAIR)
LA GRANDE     611 (GOOD)
MADRAS        379 (FAIR)
MEACHAM       321 (FAIR)
PENDLETON     209 (POOR)
REDMOND       631 (GOOD)
SENECA        425 (FAIR)
THE DALLES    295 (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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