Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 271200
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PST THU NOV 27 2014

*** 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.         S 12-20 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         SW 15-20 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR FRI NOV 28        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          50 (POOR).
OUTLOOK FOR FRI NOV 28        800 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 1-5 MPH.         SW 10-15 MPH.
TRANSPORT WINDS               SW 1-5 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       3000 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR FRI NOV 28        GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          360 (FAIR).
OUTLOOK FOR FRI NOV 28        561 (FAIR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S 10-18 MPH.        S 10-15 MPH.
TRANSPORT WINDS               S 10-18 MPH.        SE 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR FRI NOV 28        POOR.

VENTILATION INDEX (CATEGORY)  27 (POOR).          106 (POOR).
OUTLOOK FOR FRI NOV 28        135 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       58 (POOR)
ELLENSBURG    202 (POOR)
GOLDENDALE    129 (POOR)
TRI-CITIES     67 (POOR)
WALLA WALLA    45 (POOR)
YAKIMA        183 (POOR)
BEND          232 (POOR)
PRINEVILLE    271 (POOR)
ENTERPRISE    157 (POOR)
HERMISTON      35 (POOR)
JOHN DAY      158 (POOR)
LA GRANDE     110 (POOR)
MADRAS        427 (FAIR)
MEACHAM        44 (POOR)
PENDLETON      37 (POOR)
REDMOND       311 (FAIR)
SENECA        113 (POOR)
THE DALLES    137 (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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