Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 161110
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
410 AM PDT MON OCT 16 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 3-7 MPH.          SW 5-9 MPH.
TRANSPORT WINDS               SE 5-10 MPH.        SW 8-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE OCT 17        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          226 (POOR).
OUTLOOK FOR TUE OCT 17        723 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 2-6 MPH.          S 5-9 MPH.
TRANSPORT WINDS               N 2-6 MPH.          S 6-11 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE OCT 17        GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          128 (POOR).
OUTLOOK FOR TUE OCT 17        588 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 6-12 MPH.         S 10-16 MPH.
TRANSPORT WINDS               S 7-12 MPH.         S 14-21 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE OCT 17        GOOD.

VENTILATION INDEX (CATEGORY)  30 (POOR).          288 (POOR).
OUTLOOK FOR TUE OCT 17        671 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      200 (POOR)
ELLENSBURG    239 (POOR)
GOLDENDALE    132 (POOR)
TRI-CITIES    161 (POOR)
WALLA WALLA   379 (FAIR)
YAKIMA        116 (POOR)
BEND          259 (POOR)
PRINEVILLE    257 (POOR)
ENTERPRISE    284 (POOR)
HERMISTON     149 (POOR)
JOHN DAY      243 (POOR)
LA GRANDE     321 (FAIR)
MADRAS        350 (FAIR)
MEACHAM       246 (POOR)
PENDLETON     223 (POOR)
REDMOND       257 (POOR)
SENECA        204 (POOR)
THE DALLES     73 (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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