196
WWUS75 KBOI 041616
NPWBOI

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
916 AM MST Wed Dec 4 2024

IDZ012-014-ORZ064-052215-
/O.EXT.KBOI.FG.Y.0015.000000T0000Z-241206T2100Z/
/O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/
Lower Treasure Valley ID-Upper Treasure Valley-Oregon Lower
Treasure Valley-
Including the cities of Nyssa, Mountain Home, Caldwell, Nampa,
Ontario, and Boise
916 AM MST Wed Dec 4 2024

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 2 PM MST FRIDAY...
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY
IN VALLEYS...

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or
  less in dense fog. For the Air Stagnation Advisory in valleys, an
  extended period of stagnant air, with light winds and little
  vertical mixing. This is due to an inversion near the surface that
  will continue to trap pollutants.

* WHERE...Treasure Valley Zones.

* WHEN...For the Dense Fog Advisory, until 2 PM MST Friday. For the
  Air Stagnation Advisory, until 5 PM MST Saturday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems. Low visibility could make driving conditions
  hazardous.

* ADDITIONAL DETAILS...Fog could produce patchy black icy for slick
  roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

&&

$$

IDZ011-013-016-028-033-ORZ061>063-052215-
/O.CON.KBOI.AS.Y.0002.000000T0000Z-241208T0000Z/
West Central Mountains-Boise Mountains-Western Magic Valley-Camas
Prairie-Upper Weiser River-Harney County-Baker County-Malheur
County-
Including the cities of Venator, New Princeton, Midvale, Jerome,
Council, Pine, Diamond, Baker, Malheur City, Dunnean, Garden
Valley, Twin Falls, McCall, Burns, Fairfield, Buchanan, Cascade,
Idaho City, Cambridge, Lowman, and Crane
916 AM MST Wed Dec 4 2024 /816 AM PST Wed Dec 4 2024/

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST /4 PM
PST/ SATURDAY IN VALLEYS...

* WHAT...An extended period of stagnant air, with light winds and
  little vertical mixing. This is due to an inversion near the
  surface that will continue to trap pollutants in valleys.

* WHERE...Portions of south central, southwest, and west central
  Idaho and northeast and southeast Oregon.

* WHEN...Until 5 PM MST /4 PM PST/ Saturday.

* IMPACTS...Poor air quality may cause issues for people with
  respiratory problems.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

State air quality agencies highly recommend that no outdoor burning
occur and that residential wood burning devices be limited as much
as possible. According to state air quality agencies, prolonged
periods of stagnant air can hold pollutants close to the ground
where people live and breathe. Check with your local burn agency for
any current restrictions in your area.

&&

$$

JDS