Emmett Weather

...DRY COLD FRONTAL PASSAGE SATURDAY...

Elevated fire weather conditions as a dry cold front moves through
the region. Winds begin to rise Saturday afternoon, although
mostly remain 15 to 20 mph with 25 to 30 mph gusts. The frontal
passage itself will occur overnight, bringing 30 to 40 mph gusts
through Eastern Oregon. At the same time, minimum RHs across the
area are well below 20%, down to 10% in the high desert. While
the winds here increase overnight, RHs rise out of the 10-20%
range with cooling temps. Thus, while the watch is limited to
Saturday afternoon and evening, gusty winds will continue
overnight including areas currently outside the fire weather
watch.

The National Weather Service in Boise has issued a Fire Weather
Watch for winds and low relative humidities, which is in effect
from Saturday afternoon through Saturday evening.

* AFFECTED AREA...In Idaho, Fire Weather Zone 423 Owyhee
Mountains. In Oregon, Fire Weather Zones 670 Burns BLM, 671
Steens Mountain and 672 Southern Grasslands.

* TIMING...From Saturday afternoon through Saturday evening.

* WINDS...West 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...6 to 14 percent.

* TEMPERATURES...90 to 100 degrees.

* IMPACTS...Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions
are possible. Listen for later forecasts and possible Red Flag
Warnings.

...GUSTY WINDS AND LOW HUMIDITY EXPECTED THIS WEEKEND...

.A building ridge to the south combined with a trough moving
across western Canada will tighten the pressure gradient
over the area through the weekend creating breezy to windy
conditions for the weekend. This combined with warming temperatures
and low humidity will lead to high fire danger across much of
eastern Idaho.

The National Weather Service in Pocatello has issued a Fire
Weather Watch for gusty winds and low relative humidity, which is
in effect from Saturday afternoon through Sunday evening.

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River
Valley/Idaho Falls BLM, Fire Weather Zone 422 Sawtooth
Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake
River Valley/Twin Falls BLM north of the Snake River, Fire
Weather Zone 475 East Salmon River Mountains/Salmon NF and
Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF.

* WINDS...West 15 to 25 mph with gusts up to 40 mph during the
afternoon and evening hours.

* RELATIVE HUMIDITY...5 to 12 percent during the afternoon and
early evenings.

* IMPACTS...Moderate wind and very low humidity can lead to rapid
spread of fire and more intense fire in receptive fuels.

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

* WHAT...Air Quality Advisory because of degraded air quality.

Air Quality Index is forecast to be Very Unhealthy.

* WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette,
Valley, and Washington Counties.

* WHEN...UNTIL 2 PM MDT FRIDAY.

* IMPACTS...Everyone may begin to experience health effects; members
of sensitive groups may experience more serious health effects.

Air pollutants can cause breathing difficulties for children, the
elderly, as well as persons with respiratory problems. Those
individuals who are sensitive to increased particulate matter or
smoke are encouraged to avoid prolonged or strenuous outdoor
activity during this advisory. Open burning is prohibited by air
quality rule. It is also recommended that all other individuals
limit prolonged or strenuous activity outdoors.

THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's
Boise Regional Office at (208) 373-0550.

* WHAT...Air Quality Advisory because of degraded air quality.

Air Quality Index is forecast to be Very Unhealthy.

* WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette,
Valley, and Washington Counties.

* WHEN...UNTIL 2 PM MDT FRIDAY.

* IMPACTS...Members of sensitive groups may experience health
effects. The general public is not likely to be affected.

Air pollutants can cause breathing difficulties for children, the
elderly, as well as persons with respiratory problems. Those
individuals who are sensitive to increased particulate matter or
smoke are encouraged to avoid prolonged or strenuous outdoor
activity during this advisory. Open burning is prohibited by air
quality rule. It is also recommended that all other individuals
limit prolonged or strenuous activity outdoors.

THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's
Boise Regional Office at (208) 373-0550.

* WHAT...Air Quality Advisory because of degraded air quality.

Air Quality Index is forecast to be Very Unhealthy.

* WHERE...Ada, Adams, Boise, Canyon, Elmore, Gem, Owyhee, Payette,
Valley, and Washington Counties.

* WHEN...UNTIL 2 PM MDT FRIDAY.

* IMPACTS...Air Quality is acceptable; however for some pollutants
there may be a moderate health concern for a very small number of
people who are unusually sensitive to air pollution.

Air pollutants can cause breathing difficulties for children, the
elderly, as well as persons with respiratory problems. Those
individuals who are sensitive to increased particulate matter or
smoke are encouraged to avoid prolonged or strenuous outdoor
activity during this advisory. Open burning is prohibited by air
quality rule. It is also recommended that all other individuals
limit prolonged or strenuous activity outdoors.

THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ's
Boise Regional Office at (208) 373-0550.