Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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733
AUUS46 KPDT 291124
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
424 AM PDT WED MAR 29 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 5-10 MPH.        SW 12-19 MPH.
TRANSPORT WINDS               SE 5-10 MPH.        SW 15-31 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU MAR 30        GOOD.

VENTILATION INDEX (CATEGORY)  67 (POOR).          307 (FAIR).
OUTLOOK FOR THU MAR 30        1009 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 4-9 MPH.          SW 10-17 MPH.
TRANSPORT WINDS               S 4-9 MPH.          SW 14-27 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU MAR 30        GOOD.

VENTILATION INDEX (CATEGORY)  80 (POOR).          419 (FAIR).
OUTLOOK FOR THU MAR 30        1050 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 11-17 MPH.        S 16-26 MPH.
TRANSPORT WINDS               S 11-17 MPH.        S 19-27 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR THU MAR 30        GOOD.

VENTILATION INDEX (CATEGORY)  98 (POOR).          139 (POOR).
OUTLOOK FOR THU MAR 30        837 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       28 (POOR)
ELLENSBURG     64 (POOR)
GOLDENDALE    130 (POOR)
TRI-CITIES    392 (FAIR)
WALLA WALLA   147 (POOR)
YAKIMA        277 (POOR)
BEND          432 (FAIR)
PRINEVILLE    459 (FAIR)
ENTERPRISE    193 (POOR)
HERMISTON     307 (FAIR)
JOHN DAY      212 (POOR)
LA GRANDE     166 (POOR)
MADRAS        568 (FAIR)
MEACHAM       115 (POOR)
PENDLETON      94 (POOR)
REDMOND       478 (FAIR)
SENECA        221 (POOR)
THE DALLES     84 (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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