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 gusts 25 mph or higher in the mountains and gusts 30 mph or higher elsewhere AND relative humidity 15% or lower.
Near record temperatures with single digit relative humidity.
Scattered or greater coverage of lightning (thunderstorms).

Missing Stations

  • Blackrock

Eastern Great Basin Area 7 Day
Significant Fire Potential

Issued: Wednesday, Jul 30, 2014 Parameters:

Predictive Service Area Tue
Jul 29
Jul 30
Jul 31
Aug 1
Aug 2
Aug 3
Aug 4
Aug 5
EB01 - West Idaho Mtns
EB02 - Central Idaho Mtns
EB03 - E ID Desert/Range
EB04 - Southwest Idaho
EB05 - Southeast Idaho
EB06 - Ern ID/Wrn WY Mtns
EB07 - W Utah Desert
EB08 - N/Cntl UT Mtns
EB09 - Uinta Mtns
EB10 - Uintah Basin
EB11 - SW Utah Desert
EB12 - S Cntl UT Mtns
EB13 - Mojave Desert
EB14 - AZ Strip
EB15 - Bookcliffs
EB16 - SE UT Desert


A high pressure ridge continues to be parked over the western United states, with monsoonal moisture flowing northward out of the southwest. The center of this moisture is located over northeastern Utah, southeastern Idaho and western Wyoming this morning, where cloud cover and light showers will linger throughout most of today.

This moist air mass has reached as far north as central Idaho as well, for isolated to scattered afternoon thunderstorms in that area over the next few days.  The majority of storms will be accompanied by at least light rainfall, with highest chances of dry lightning being the west central Idaho mountains.

Fairly widespread afternoon showers and thunderstorms are expected again today and Thursday over central and southern Utah, before a drier air mass pushes in from the west as we approach the weekend, reducing thunderstorm potential in the southern half of the region.

A shortwave trough is projected to move across central Idaho for more organized convection and higher rainfall amounts in this area on Friday afternoon.

More westerly flow will bring drier air to the eastern great basin early in the weekend, for reduced thunderstorm potential region wide, before another surge of monsoonal moisture pushes northward starting on Sunday. This moisture will make its way across Utah and into central Idaho by Monday increasing relative humidity and thunderstorm potential through early next week.

Fuels/Fire Potential
Afternoon thunderstorms will likely produce an increase in initial attack across the central Idaho mountains today and Thursday, however large fire potential remains low.  Resource availability is high region wide, allowing for effective initial attack with the onset of the lightning activity.

Large fire potential has decreased to low across the state Utah as deeper moisture has brought fuel moisture up to non-critical levels.  Potential will return to moderate across the lower elevations of southern Utah late this week under a much drier air mass.

Moderate to high initial attack activity is expected to continue across Idaho through this weekend, however large fire potential will remain low due to light winds and increased humidity and fuel moisture. 

See the EGB homepage  

Forecasters: Beyuka 7/30/2014 0833 MDT