Daily Dispersion Outlook
Issued by NWS Pendleton, OR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7
000
AUUS46 KPDT 041059
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
400 AM PDT MON MAY 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 3-7 MPH.         SW-W 5-10 MPH.
TRANSPORT WINDS               SE 3-7 MPH.         SW 25-35 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAY 5         GOOD.

VENTILATION INDEX (CATEGORY)  26 (POOR).          553 (FAIR).
OUTLOOK FOR TUE MAY 5         1012 (GOOD).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 3-7 MPH.          S 10-15 MPH.
TRANSPORT WINDS               W 3-7 MPH.          SW 30-40 MPH.
MIXING HEIGHT                 NEAR SURFACE.       10500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAY 5         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          908 (GOOD).
OUTLOOK FOR TUE MAY 5         1047 (GOOD).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SE 0-4 MPH.         W 3-7 MPH.
TRANSPORT WINDS               SE 0-4 MPH.         SW 20-30 MPH.
MIXING HEIGHT                 NEAR SURFACE.       12500 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR TUE MAY 5         GOOD.

VENTILATION INDEX (CATEGORY)  25 (POOR).          456 (FAIR).
OUTLOOK FOR TUE MAY 5         392 (FAIR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      581 (FAIR)
ELLENSBURG    749 (GOOD)
GOLDENDALE    685 (GOOD)
TRI-CITIES    782 (GOOD)
WALLA WALLA   342 (FAIR)
YAKIMA        728 (GOOD)
BEND          712 (GOOD)
PRINEVILLE    655 (GOOD)
ENTERPRISE    255 (POOR)
HERMISTON     596 (FAIR)
JOHN DAY      931 (GOOD)
LA GRANDE     364 (FAIR)
MADRAS        811 (GOOD)
MEACHAM       297 (POOR)
PENDLETON     359 (FAIR)
REDMOND       624 (GOOD)
SENECA        844 (GOOD)
THE DALLES    618 (GOOD)

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.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.