2009_WGB_PSAs
Fire Potential Main Title
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Issued: Wednesday, Sep 14, 2011 *7-day Animation* BLM FWZ CO
Predictive Service Areas Ytd Wed Thu Fri Sat Sun Mon Tue
Sep 13 Sep 14 Sep 15 Sep 16 Sep 17 Sep 18 Sep 19 Sep 20
WB01 - Northwest 0 2 2 2 2 2 2 3
WB02 - Northern Mountains 0 2 2 2 2 2 2 2
WB03 - Sierra Front 0 1 1 1 1 1 1 2
WB04 - West Central Mountains 0 1 1 2 2 2 2 2
WB05 - Central Mountains 0 1 1 1 1 2 2 2
WB06 - Humboldt Basin 0 1 1 1 1 2 2 2
WB07 - Northeast 0 2 2 2 2 2 2 2
WB08 - West Desert 0 2 2 2 2 2 2 2
WB09 - East Central Mountains 0 1 1 1 1 1 1 1
WB10 - Southeast Desert 0 1 1 1 2 2 2 3
WB11 - Southern Mountains 0 1 1 1 1 2 2 2
Legend:
WB12 - Southeast Mountains 0 1 1 1 1 1 2 2
WB13 - East Desert 0 1 1 1 1 2 2 2
Fuel Dryness
  Moist - Little or no risk for large fires. Weather Synopsis:
RED FLAG WARNING for far western and northwestern Nevada TUESDAY afternoon through 0100 Wednesday morning for gusty winds and low humidity. Winds will spread into central Nevada Wednesday as a low pressure center moves through N CA and into Oregon. Southwest winds from the low will also pull up some monsoon moisture from Mexico into southeastern Nevada, starting in the far south today and spreading northward along the Utah border on Wednesday. Showers and thunderstorms should reach north into White Pine County on Wednesday before being pushed off to the east on Thursday. Strong winds will return Friday - Saturday - Sunday as another trough of low pressure moves in from the Pacific.  
  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.
High Risk Days Fire Potential Discussion:                    
  At least a 20% chance of "Large Fire" due to combination of either "Dry" or "Very Dry" fuel dryness and an Ignition Trigger.  High Risk Days will include a symbol indicating the type of trigger event. There is LOW TO MODERATE RISK of large fire over most of the state today.  Temperatures are decreasing as the low moves across our north with drops of 3-6 degrees by Wednesday.   Low afternoon humidity and poor to fair overnight RH recovery are also expected through this week over much of Nevada with only improvements in the south and east near mid week. Fire potential increases to MODERATE for western Nevada and the Sierra as gusty dry winds move into the state, and could impact any existing fires or holdovers from previous days lightning. Gusty winds will likely continue overnight on Tuesday and spread east Wednesday.
  At least a 20% chance of "Large Fire" due to combination of either "Dry" or "Very Dry" fuel dryness and a Critical Burn Environment.  High Risk Days will include a symbol indicating the type of trigger event.
Resources:
Western Great Basin Area Preparedness Level is 2:  Resources have recovered from drawdown making success of initial attack likely.

    
    
    
    
    
    
 
  
High Risk Events
Critical Burn Environment
THE PRODUCT BELOW IS EXPERIMENTAL
Ignition Trigger National Preparedness Level is 2:  Anticipate LOW TO MODERATE demand for outside of region resources needed over the next few days. LOW TO MODERATE demand for resources in support of other geographic areas.
~ Lightning - Dry lightning or any lightning during very hot, dry weather
Forecasts for certain areas may not be available because observations from the following RAWS locations were not uploaded to WIMS on time. WESTERN GREAT BASIN Wed Thu Fri Sat Sun Mon Tue
Sep 14 Sep 15 Sep 16 Sep 17 Sep 18 Sep 19 Sep 20
Anticipated Resource Demand  0 0 0        
              T1 Crews 0 0 0 0 0 0 0
T1 Air Tankers 0 0 0 0 0 0 0
T1 / T2 IMT's 0 0 0 0 0 0 0
NATIONAL RESOURCE DEMAND INDEX **
** (Experimental Index) Resources refers to T1 resources (i.e. Crews, A/T's, IMT's). Demand for additional resources nationally is based on utilization of resources currently in the Area.   Anticipate low demand for resources from outside the Area
  Anticipate low to moderate demand for resources from outside the Area
  Anticipate moderate to high demand for resources from outside the Area
  Anticipate high to very high demand for resources from outside the Area
Click here for a defintion of the National Anticipated Resource demand
For a printable PDF version of this product, click HERE.
More Products:
7 day ERC, F100, F1000 projections
7 day Temperature & RH projections
7-Day National Forecast Map 
EXPLANATION OF 7 DAY SIGNIFICANT FIRE POTENTIAL PRODUCT
HOW WE DETERMINE DRYNESS LEVEL BREAKPOINTS