GACC Map

Legend

Fuel Dryness


Moist - Little or no risk for large fires.
Dry - Low risk of large fires in the absence of a "High Risk" event.
Very dry - Low/Moderate risk of large fires in the absence of a "High Risk" event.
Data Unavailable.

High Risk Events


Wind - Sustained speeds of 20 mph or greater.
Hot and Dry - Temperatures above normal with humidity 20% or less.
Lightning - LALs of 3 or higher.

Missing Stations

  • BONNERS FERRY
  • Gates Park
  • GLEASON
  • ARROWWOOD 2
  • MARSHALL CO

Northern Rockies Area 7 Day
Significant Fire Potential

Issued: Tuesday, Sep 2, 2014 Parameters:


Predictive Service Area Mon
Sep 1
Tue
Sep 2
Wed
Sep 3
Thu
Sep 4
Fri
Sep 5
Sat
Sep 6
Sun
Sep 7
Mon
Sep 8
NR01 - North ID Panhandle
NR02 - Northwest Montana
NR03 - South ID Panhandle
NR04 - Western Montana
NR05 - Camas Prairie of Idaho
NR06 - North Central ID and Bitterroot/Sapphire Mountains
NR07 - Glacier NP and Wilderness Areas
NR08 - SW Montana W of Continental Divide
NR09 - Big Hole-SW Montana E of Continental Divide
NR10 - Northern Front Range
NR11 - West Central Montana
NR12 - South Central Montana & Yellowstone NP
NR13 - Northern Plains & Missouri Breaks
NR14 - Southern Montana (Big Horn / Powder River)
NR15 - NE Montana & NW N. Dakota
NR16 - SE Montana & SW N. Dakota
NR17 - Northeastern North Dakota
NR18 - Southeastern North Dakota

Weather
Warming and drying will continue today under weak high pressure ridging and flat westerly flow. Gusty westerly winds are expected on ridgetops in North ID and Western MT today and along the front range and adjacent plains east of the Divide. Temps. all areas should be back to near-average today with min RHs into the 20s percent North ID and Western/Central MT.  The next low pressure trough to affect the region will bring more cooling and showers to North ID and western/central MT late tonight and Wednesday...spreading east across the entire region Wednesday night/Thursday. There is a chance for some strong thunderstorms in eastern ND tomorrow evening with heavy rain...associated with the cold front ahead of the trough. This next system is a little cooler...so a few inches of snow are likely above 6500 ft. in NW MT/Glacier NP by Thursday morning. Greatest shower coverage/wetting rain potential will be in PSAs 1-2-3-4-7-10...with mainly just widely scattered showers further south. 


Weak low pressure troughing will remain in place Friday/Saturday...with gradually warming temps./lowering RHs. Cool nights though will see frosts in higher valleys over North ID and Western MT. Southwest flow will develop this weekend...returning a few showers to SW and S-Central MT. Another low looks likely to move through the region Monday/Tuesday. Thus...this fall-like pattern of lows moving through separated by 3-4 days of warming/drying appears as though it will continue for some time. 

Fuels/Fire Potential

While fire danger indices show some signs of drying...it would take several days of warm/dry weather for the fuels to become dry enough to be classified as critically dry. And under the current weather pattern...this appears unlikely within the next 10 days...possibly longer. Thus the potential for the development and growth of large fires will remain low.

Resources

Resources are adequate.

Forecasters: Richmond 9/2/2014 0750 MDT