Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 261100
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT THU MAR 26 2015

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 3-7 MPH.         SW-NW 4-9 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       5000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI MAR 27        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          258 (POOR).
OUTLOOK FOR FRI MAR 27        205 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          SE 3-7 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       4500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI MAR 27        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          129 (POOR).
OUTLOOK FOR FRI MAR 27        334 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 4-9 MPH.         S 5-10 MPH.
TRANSPORT WINDS               SW 4-9 MPH.         S 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       6000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI MAR 27        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          280 (POOR).
OUTLOOK FOR FRI MAR 27        391 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       88 (POOR)
ELLENSBURG     94 (POOR)
GOLDENDALE    111 (POOR)
TRI-CITIES    287 (POOR)
WALLA WALLA   266 (POOR)
YAKIMA         93 (POOR)
BEND          253 (POOR)
PRINEVILLE    322 (FAIR)
ENTERPRISE    159 (POOR)
HERMISTON     188 (POOR)
JOHN DAY      227 (POOR)
LA GRANDE     292 (POOR)
MADRAS        228 (POOR)
MEACHAM       241 (POOR)
PENDLETON     185 (POOR)
REDMOND       257 (POOR)
SENECA        226 (POOR)
THE DALLES     62 (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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