- Air Stagnation Advisory for Modoc County County, California
- Air Stagnation Advisory issued December 16 at 1:33PM PST until December 19 at 8:00AM PST by NWS
- Effective: Saturday, December 16, 2017 at 7 p.m.
- Expires: Tuesday, December 19, 2017 at 8 a.m.
...High pressure to bring more stagnation this weekend...
...AIR STAGNATION ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
8 AM PST TUESDAY...
The National Weather Service in Medford has issued an Air
Stagnation Advisory...which is in effect from 7 PM this evening
to 8 AM PST Tuesday.
* Air quality: Quality will deteriorate beginning tonight due to
high pressure and limited ventilation.
* Locations include: All inland valleys.
* Impacts: Limited ventilation will result in degraded air
quality, which may pose a risk to those working outside and to
those with sensitive health issues.
* View the hazard area in detail at
An air stagnation advisory indicates that due to limited movement
of an airmass across the advisory area, pollution will increase.