Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 281257
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
457 AM PST WED JAN 28 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-6 MPH.       W-NW 2-6 MPH.
TRANSPORT WINDS               VRBL 2-6 MPH.       SW-W 2-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 29        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          112 (POOR).
OUTLOOK FOR THU JAN 29        56 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W-NW 2-4 MPH.       NE 2-5 MPH.
TRANSPORT WINDS               W-NW 2-4 MPH.       NE 2-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 29        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          46 (POOR).
OUTLOOK FOR THU JAN 29        65 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRBL 2-3 MPH.       S 3-5 MPH.
TRANSPORT WINDS               VRBL 2-3 MPH.       S 2-4 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU JAN 29        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          90 (POOR).
OUTLOOK FOR THU JAN 29        131 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       34 (POOR)
ELLENSBURG     41 (POOR)
GOLDENDALE     40 (POOR)
TRI-CITIES     37 (POOR)
WALLA WALLA   160 (POOR)
YAKIMA         41 (POOR)
BEND           93 (POOR)
PRINEVILLE    109 (POOR)
ENTERPRISE     77 (POOR)
HERMISTON      41 (POOR)
JOHN DAY       68 (POOR)
LA GRANDE      92 (POOR)
MADRAS         99 (POOR)
MEACHAM       165 (POOR)
PENDLETON     149 (POOR)
REDMOND       101 (POOR)
SENECA         53 (POOR)
THE DALLES     34 (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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