Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 191054
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
254 AM PST SUN NOV 19 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 0-4 MPH.       S 8-15 MPH.
TRANSPORT WINDS               VRBL 0-4 MPH.       SW 30-40 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON NOV 20        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          277 (POOR).
OUTLOOK FOR MON NOV 20        50 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-6 MPH.          SW 8-15 MPH.
TRANSPORT WINDS               W 2-6 MPH.          SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON NOV 20        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          281 (POOR).
OUTLOOK FOR MON NOV 20        27 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 10-20 MPH.       S 12-22 MPH.
TRANSPORT WINDS               SE 10-20 MPH.       SW 30-40 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON NOV 20        POOR.

VENTILATION INDEX (CATEGORY)  57 (POOR).          255 (POOR).
OUTLOOK FOR MON NOV 20        79 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       65 (POOR)
ELLENSBURG    120 (POOR)
GOLDENDALE    136 (POOR)
TRI-CITIES    204 (POOR)
WALLA WALLA   458 (FAIR)
YAKIMA        146 (POOR)
BEND          363 (FAIR)
PRINEVILLE    304 (FAIR)
ENTERPRISE    165 (POOR)
HERMISTON     134 (POOR)
JOHN DAY      154 (POOR)
LA GRANDE     271 (POOR)
MADRAS        411 (FAIR)
MEACHAM       256 (POOR)
PENDLETON     243 (POOR)
REDMOND       332 (FAIR)
SENECA        123 (POOR)
THE DALLES     30 (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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