Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 041231
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
431 AM PST WED MAR 4 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 3-6 MPH.         E 2-4 MPH.
TRANSPORT WINDS               SE 3-6 MPH.         SE 2-5 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4000 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU MAR 5         POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          111 (POOR).
OUTLOOK FOR THU MAR 5         137 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 2-3 MPH.          SE 4-5 MPH.
TRANSPORT WINDS               N 2-3 MPH.          S 3-6 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU MAR 5         POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          116 (POOR).
OUTLOOK FOR THU MAR 5         53 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 1-2 MPH.         SW 1-3 MPH.
TRANSPORT WINDS               SE 1-2 MPH.         S 1-2 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5500 FT MSL.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR THU MAR 5         POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          38 (POOR).
OUTLOOK FOR THU MAR 5         192 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       35 (POOR)
ELLENSBURG     71 (POOR)
GOLDENDALE     91 (POOR)
TRI-CITIES    118 (POOR)
WALLA WALLA    77 (POOR)
YAKIMA         82 (POOR)
BEND           73 (POOR)
PRINEVILLE    149 (POOR)
ENTERPRISE     26 (POOR)
HERMISTON      94 (POOR)
JOHN DAY       25 (POOR)
LA GRANDE      47 (POOR)
MADRAS         92 (POOR)
MEACHAM        53 (POOR)
PENDLETON     110 (POOR)
REDMOND       131 (POOR)
SENECA         26 (POOR)
THE DALLES     95 (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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