Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 031101
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT SUN MAY 3 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 3-7 MPH.         N 5-10 MPH.
TRANSPORT WINDS               SE 3-7 MPH.         SW 10-15 MPH.
MIXING HEIGHT                 NEAR SURFACE.       7500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON MAY 4         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          232 (POOR).
OUTLOOK FOR MON MAY 4         557 (FAIR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 3-7 MPH.         NE 5-10 MPH.
TRANSPORT WINDS               SW 3-7 MPH.         SW 7-13 MPH.
MIXING HEIGHT                 NEAR SURFACE.       8500 FT MSL.
DISPERSION CATEGORY           POOR.               FAIR.
OUTLOOK FOR MON MAY 4         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          295 (POOR).
OUTLOOK FOR MON MAY 4         892 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 N 1-5 MPH.          N 5-10 MPH.
TRANSPORT WINDS               N 1-5 MPH.          SW 12-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON MAY 4         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          153 (POOR).
OUTLOOK FOR MON MAY 4         462 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      433 (FAIR)
ELLENSBURG    511 (FAIR)
GOLDENDALE    328 (FAIR)
TRI-CITIES    251 (POOR)
WALLA WALLA   152 (POOR)
YAKIMA        397 (FAIR)
BEND          112 (POOR)
PRINEVILLE    230 (POOR)
ENTERPRISE     91 (POOR)
HERMISTON     248 (POOR)
JOHN DAY      416 (FAIR)
LA GRANDE     157 (POOR)
MADRAS        131 (POOR)
MEACHAM       119 (POOR)
PENDLETON     221 (POOR)
REDMOND       167 (POOR)
SENECA        385 (FAIR)
THE DALLES    269 (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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