Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 171229
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
525 AM PDT WED SEP 17 2014

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-5 MPH.         VRB 2-6 MPH.
TRANSPORT WINDS               SE 0-5 MPH.         W 0-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR
OUTLOOK FOR THU SEP 18        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          32 (POOR).
OUTLOOK FOR THU SEP 18        654 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-5 MPH.         NE 3-6 MPH.
TRANSPORT WINDS               NW 0-6 MPH.         SE 1-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU SEP 18        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          79 (POOR).
OUTLOOK FOR THU SEP 18        798 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-4 MPH.         S 10-13 MPH.
TRANSPORT WINDS               SE 0-4 MPH.         S 10-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR THU SEP 18        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          604 (GOOD).
OUTLOOK FOR THU SEP 18        511 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       51 (POOR)
ELLENSBURG    235 (POOR)
GOLDENDALE    155 (POOR)
TRI-CITIES     27 (POOR)
WALLA WALLA    26 (POOR)
YAKIMA        104 (POOR)
BEND          970 (GOOD)
ENTERPRISE    787 (GOOD)
HERMISTON      36 (POOR)
JOHN DAY     1035 (GOOD)
LA GRANDE     659 (GOOD)
MADRAS        566 (FAIR)
MEACHAM       157 (POOR)
PENDLETON      31 (POOR)
REDMOND       986 (GOOD)
SENECA       1050 (GOOD)
THE DALLES     52 (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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