Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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150
AUUS46 KPDT 231324
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
523 AM PST MON JAN 23 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VAR 2-5 MPH.        W 2-5 MPH.
TRANSPORT WINDS               N 3-7 MPH.          W 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JAN 24        POOR.

VENTILATION INDEX (CATEGORY)  30 (POOR).          102 (POOR).
OUTLOOK FOR TUE JAN 24        102 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 3-6 MPH.          NW 2-5 MPH.
TRANSPORT WINDS               N 4-8 MPH.          NW 4-8 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR TUE JAN 24        POOR.

VENTILATION INDEX (CATEGORY)  52 (POOR).          58 (POOR).
OUTLOOK FOR TUE JAN 24        28 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 2-5 MPH.         NW 4-8 MPH.
TRANSPORT WINDS               NW 3-7 MPH.         N 6-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR TUE JAN 24        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          118 (POOR).
OUTLOOK FOR TUE JAN 24        112 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       25 (POOR)
ELLENSBURG     25 (POOR)
GOLDENDALE     25 (POOR)
TRI-CITIES    107 (POOR)
WALLA WALLA    91 (POOR)
YAKIMA         40 (POOR)
BEND          171 (POOR)
PRINEVILLE     84 (POOR)
ENTERPRISE    213 (POOR)
HERMISTON     118 (POOR)
JOHN DAY      324 (FAIR)
LA GRANDE     122 (POOR)
MADRAS         44 (POOR)
MEACHAM        71 (POOR)
PENDLETON     101 (POOR)
REDMOND        99 (POOR)
SENECA        423 (FAIR)
THE DALLES     31 (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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