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 8 9
164
AUUS46 KPDT 171145
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
345 AM PST SUN DEC 17 2017

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

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 S-SE 1-4 MPH.       SW-W 5-10 MPH.
TRANSPORT WINDS               S-SE 1-4 MPH.       SW 15-25 MPH.
MIXING HEIGHT                 NEAR SURFACE.       2000 FT MSL.
DISPERSION CATEGORY           POOR.               GOOD.
OUTLOOK FOR MON DEC 18        POOR.

VENTILATION INDEX (CATEGORY)  49 (POOR).          116 (POOR).
OUTLOOK FOR MON DEC 18        139 (POOR).

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

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 0-4 MPH.          SW 5-10 MPH.
TRANSPORT WINDS               W 0-4 MPH.          SW 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON DEC 18        POOR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          38 (POOR).
OUTLOOK FOR MON DEC 18        25 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 NW 0-4 MPH.         S 5-10 MPH.
TRANSPORT WINDS               NW 0-4 MPH.         S 5-10 MPH.
MIXING HEIGHT                 NEAR SURFACE.       NEAR SURFACE.
DISPERSION CATEGORY           POOR.               POOR.
OUTLOOK FOR MON DEC 18        FAIR.

VENTILATION INDEX (CATEGORY)  25 (POOR).          63 (POOR).
OUTLOOK FOR MON DEC 18        95 (POOR).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM       68 (POOR)
ELLENSBURG     25 (POOR)
GOLDENDALE     90 (POOR)
TRI-CITIES     56 (POOR)
WALLA WALLA   136 (POOR)
YAKIMA         25 (POOR)
BEND           70 (POOR)
PRINEVILLE     54 (POOR)
ENTERPRISE     25 (POOR)
HERMISTON      25 (POOR)
JOHN DAY       27 (POOR)
LA GRANDE      65 (POOR)
MADRAS        153 (POOR)
MEACHAM        56 (POOR)
PENDLETON      30 (POOR)
REDMOND        99 (POOR)
SENECA         25 (POOR)
THE DALLES     25 (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.

$$



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