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FORECASTERS PREDICT MIDWEEK RAINS TO FIRES IN WASHINGTON AND
OREGON
August 20, 2001 By Wednesday
it could be one of those good news, bad news days for the nation's
wildland fire fighters. "The good news is the Pacific Northwest
will see less wind and slightly lower than normal temperatures
Monday as the system of low pressure that brought breezy conditions
to the Northwest over the weekend moves east into Montana and
the Dakotas," said Larry Van Bussum, NOAA
National Weather Service meteorologist assigned to the National Interagency Fire Center
in Boise. (Click NOAA image for larger view. Caption: Jim
Prange, National Weather Service Incident Meteorologist, checks
winds and humidity on the road as the hotshot crew begins firing
operations at the Icicle Fire complex near Leavenworth, Washington.
Prange arrived at the Icicle Fire complex on Aug. 15 and is shown
here Sunday afternoon at the 8-Mile Creek fire burnout at the
fire complex. Burnouts help firefighters suppress wildfires by
eliminating vegetation.)
"Another system is approaching
from Mexico. However, very little monsoon moisture will make
it into northwest Utah, so no dousing rains are expected there,"
Van Bussum said.
National Weather Service meteorologists
are closely watching a large low pressure system expected to
continue move slowly from the Gulf of Alaska toward the Northwestern
United States midweek which will likely bring precipitation to
Washington and Oregon. In other areas of the Great Basin and
into Southern California conditions will remain warm with drier
air expected to move into the southwestern deserts.
Current Weather Situation from
the National Weather Service for Monday, Aug. 20, 2001:
The Pacific Northwest will see less wind and slightly lower than
normal temperatures. The Dakotas could see some isolated dry
lightning Monday afternoon.
Monsoon moisture over the four corner states (Utah-New Mexico-Arizona-Colorado)
will bring scattered thunderstorms to the area as well as into
southern Nevada and southern and eastern Wyoming late Monday
afternoon. |
Nineteen NWS Incident Meteorologists
Currently Deployed to Fires
Forty large fires continue to burn in nine states with more than
28,500 firefighters and support personnel assigned to wildland
fires. There are nineteen National Weather Service Incident Meteorologists
(IMETs) deployed to fires in seven western states.
Jim Prange is the National
Weather Service meteorologist assigned to the week-old Icicle
fire that has burned 6,875 acres of the Wenatchee National Forest
in the Cascade Mountains. The fire is six miles southwest of
Leavenworth, Washington, where crews are making good progress
toward containment objectives.
"I was tracking the weather.
It was a very critical burnout and accurate weather information
of temperatures, winds and humidity were necessary for a successful
and safe burn out. With structures below, spot fires were of
great concern especially with the winds westerly aloft. The burnout
was very successful and safe with no fire spots into the structures,"
Prange said.
"We told the land management agencies at Friday afternoon's
briefing they could expect better conditions by Sunday morning
because both the temperatures and winds were going to decrease.
Based on these forecasts, they planned their upcoming fire tactics
and they were able to get a better handle on the fire,"
Prange said.
When he is not serving as an
IMET, Prange is a forecaster at the NWS
Forecast Office in Seattle.
IMETs Are There to Provide Site-specific Forecasting for the
Wildfires
The elite group of 54 NWS Incident Meteorologists are trained
in fire weather forecasting and how weather can impact fire behavior
and crew safety. The meteorologists study the areas of the country
that suffer from long-term drought conditions and know that means
the likelihood of wildfires increases.
"The fire behavior analyst
knows the fuels but they rely on us to know the weather,"
Van Bussum added. "The land management agencies know they
can rely on us for accurate forecasts of wind direction and speed,
temperatures and humidity. We help the fire's incident command
team know what will happen with the winds, when possible moisture
might happen and whether there could be lightning associated
with these changing weather conditions. Knowing all of these
weather factors, strongly influences fire strategy and helps
incident commanders make the best possible decisions how to control
wildfires."
National Weather Service forecasters
use laptop computers to access information from nearby NWS field
offices. "They can receive the latest information about
surface and upper air observations, as well as Doppler weather
radar and weather satellite data to make specialized forecasts,"
Van Bussum said.
Since 1914, NWS meteorologists
have worked closely with fire control specialists from the U.S.
Department of Agriculture's Forest Service, the Department of
Interior's Bureau of Land Management, and other federal, state
and local fire control agencies who are responsible for suppressing
fires. Weather phenomena such as dry cold fronts can change the
direction and speed of the wind; dry thunderstorms cause downbursts,
erratic wind conditions and dangerous lightning.
Relevant Web Sites
Updated forecast information
is available on the home pages of local National
Weather Service offices. These pages are organized by geographic regions
of the country.
NOAA's Fire Weather
Information Center
For additional information on the NOAA's Fire Weather Program,
please visit NOAA's
National Fire Forecasts, Offices and Outlooks, Boise, Idaho.
NOAA's
Western U.S. Wildfires Summary Includes maps
Latest NOAA
Satellite Images of Fires
NOAA's NATIONAL WEATHER SERVICE FORECASTERS PROVIDE CRITICAL
SUPPORT TO WILDFIRE MANAGEMENT
All About
Wild Fires
NOAA's Fire
Weather Program (Describes wild fire weather terms)
Fire Weather
Forecasts from NOAA's Storm
Prediction Center in Norman, Oklahoma
National Interagency Fire Center
Includes latest news and glossary of wildfire terms
Media Contact:
Marilu Trainor,
NOAA's National Weather Service
Western Region, (801) 524-5692 ext. 226
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