Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 231139
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
440 AM PDT THU MAR 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                 SW 4-9 MPH.         SW 4-9 MPH.
TRANSPORT WINDS               SW 10-14 MPH.       SW 7-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR FRI MAR 24        GOOD.

VENTILATION INDEX (CATEGORY)  118 (POOR).         455 (FAIR).
OUTLOOK FOR FRI MAR 24        557 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 VRB 0-3 MPH.        S 4-9 MPH.
TRANSPORT WINDS               W 5-9 MPH.          SW 5-9 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI MAR 24        FAIR.

VENTILATION INDEX (CATEGORY)  58 (POOR).          318 (FAIR).
OUTLOOK FOR FRI MAR 24        428 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-5 MPH.         SW 0-4 MPH.
TRANSPORT WINDS               W 3-6 MPH.          SW 3-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI MAR 24        GOOD.

VENTILATION INDEX (CATEGORY)  108 (POOR).         165 (POOR).
OUTLOOK FOR FRI MAR 24        569 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      106 (POOR)
ELLENSBURG    130 (POOR)
GOLDENDALE    325 (FAIR)
TRI-CITIES    358 (FAIR)
WALLA WALLA   494 (FAIR)
YAKIMA        199 (POOR)
BEND          604 (GOOD)
PRINEVILLE    591 (FAIR)
ENTERPRISE    159 (POOR)
HERMISTON     452 (FAIR)
JOHN DAY      330 (FAIR)
LA GRANDE     187 (POOR)
MADRAS        565 (FAIR)
MEACHAM       313 (FAIR)
PENDLETON     339 (FAIR)
REDMOND       566 (FAIR)
SENECA        348 (FAIR)
THE DALLES    102 (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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