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wwus75 kboi 270840
urgent - weather message
national weather service boise id
140 am mst tue jan 27 2015
...areas of dense fog across southeast oregon and southwest idaho
this morning...
.dense fog has formed across parts of southeast oregon and
southwest idaho this morning. visibilities of one quarter mile or
less are being observed in harney and malheur counties in oregon
and the treasure and weiser valleys in idaho. temperatures are
below freezing which would allow for icy conditions to develop on
roadways. the combination of low visibility and patches of black
ice will make for hazardous travel conditions. visibility will
improve by late morning.
lower treasure valley id-upper treasure valley-upper weiser river-
harney county-malheur county-lower treasure valley or-
140 am mst tue jan 27 2015
...dense fog advisory in effect until 11 am mst /10 am pst/ this
the national weather service in boise has issued a dense fog
advisory for the treasure valley...weiser valley...harney county
and malheur county...which is in effect until 11 am mst /10 am
pst/ this morning.
* quarter mile or less.
* impacts...reduced visibility and patches of black ice will make
for hazardous travel conditions.
precautionary/preparedness actions...
a dense fog advisory means visibilities will frequently be
reduced to less than one quarter mile. if driving...slow down...
use your headlights...and leave plenty of distance ahead of you.
wwus76 kmfr 270644
klamath basin-
northern and eastern klamath county and western lake county-
central and eastern lake county-
including the cities of...altamont...klamath falls...beatty...
bly...crescent...gilchrist...sprague river...lakeview
1044 pm pst mon jan 26 2015
...air stagnation advisory remains in effect until 11 am pst
an air stagnation advisory remains in effect until 11 am pst
* synopsis: high pressure will continue over the region through at
least thursday morning continuing low level inversions and
generally stagnant air. the high will weaken enough tuesday and
wednesday to mix out the air mass in the east side valleys.
* locations include: beatty...bly...crescent...gilchrist...
sprague river...lakeview...altamont...klamath falls.
* impacts: air quality could deteriorate if significant
particulates from pollution accumulate. these conditions could
make breathing more difficult for those with respiratory
ailments or respiratory sensitivity.
* view the hazard area in detail at
precautionary/preparedness actions...
an air stagnation advisory indicates that due to limited movement
of an air mass across the advisory area...pollution could increase
to levels that are a health concern.

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