Air Stagnation Advisory
Statement as of 10:05 AM PST on December 09, 2013
... Air stagnation advisory remains in effect until 4 am PST
An air stagnation advisory remains in effect until 4 am PST
* Synopsis... cold air in the valleys and warming temperatures
aloft will lead to strengthening inversions over the next few
days. Inversions will be very strong at night Monday through
Wednesday night and are unlikely to break during the day. Such
strong inversions will trap pollutants and lead to air quality
problems. A frontal system is expected to mix out the
inversions and clear the air on Thursday.
* Locations include: all southern Oregon valleys inland from
the coast including the cities of Grants Pass... Cave
Junction... Medford... Ashland... Klamath Falls... and
* Impacts... increasing pollution will cause air quality to
deteriorate. These conditions may make breathing more difficult
for those with health conditions. People sensitive to air
quality may wish to remain indoors.
* For a detailed view of the hazard area... visit
An air stagnation advisory indicates that due to limited movement
of an airmass across the advisory area... pollution will increase.
Statement as of 04:40 PM PST on December 08, 2013
... Record low temperature set at Montague CA...
A record low temperature of -7 degrees was set at Montague CA
This breaks the old record of -5 set in 1972.