Jefferson National Forest Presuppresion Forecast

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Experimental...Fire Weather Planning Forecast for VA Natl Forests
NATIONAL WEATHER SERVICE Blacksburg VA
900 PM EST Thu Nov 20 2025

.DISCUSSION...

A warm front will move into the area tonight into Friday, which will 
increase humidity and allow for a wetting rainfall to occur. 
Scattered showers will continue for Friday and into Saturday until 
the front moves through and high pressure builds in midday Saturday. 
Winds will be slightly elevated from the southwest Friday evening 
and turning northwest on Saturday behind the front around 5-10 mph, 
with gusts of 15-20 mph. Despite the wind shift and high pressure 
building in, RH values are not expected to be critically low, but 
will be around 30-40% Sunday/Monday. Dry weather continues through 
late Tuesday, when another larger system moves into the area 
bringing rainfall once again.

VAZ019-020-023-024-034-035-210900-
JEFFERSON NATIONAL FOREST Central Zone-
INCLUDING Warm Springs, James River, Glenwood, and Pedlar
900 PM EST Thu Nov 20 2025

                      Tonight      Fri          Fri Night    Sat          

Cloud Cover           Mcldy        Mcldy        Mcldy        Pcldy        
Precip Type           Rain         Rain         Rain         Showers      
Chance Precip (%)     20           60           70           50           
Chance of Thunder (%) 0            0            0            0            
Min/Max Temp          43           63           51           62           
Max/Min RH %          99           77           99           59           
Wind 20ft/early(mph)  Lgt/Var      Lgt/Var      Lgt/Var      Lgt/Var      
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var      Lgt/Var      
Precip Amount         0.00         0.14         0.15         0.07         
Precip Duration       1            5            9            2            
Precip Begin          6 PM         Continuing   Continuing   Continuing   
Precip End            Continuing   Continuing   Continuing   6 PM         
Mixing Hgt(ft-agl)                 1340                      3530         
Transport Wnd (mph)                W  3                      N  9         
Vent Rate (mph-ft)                 4020                      31770        
Dispersion            Very Poor                 Poor                      
Max ADI Early         2 Very Poor  2 Very Poor  4 Very Poor  10 Poor      
Max ADI Late          1 Very Poor  5 Very Poor  6 Very Poor  24 Fair      
Max LVORI Early       6            8            8            7            
Max LVORI Late        8            6            7            3            

Remarks...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s. Minimum RH 41 percent. West winds around 5 mph. 
.MONDAY...Mostly clear. Lows in the mid 30s. Highs in the upper
50s. Minimum RH 37 percent. West winds 5 to 10 mph. 
.TUESDAY...Mostly cloudy with a chance of rain. Lows in the lower
40s. Highs in the lower 50s. Minimum RH 66 percent. South winds
5 to 10 mph. 
.WEDNESDAY...Mostly cloudy. A chance of rain. Lows in the upper
40s. Highs around 60. Minimum RH 71 percent. West winds 5 to
10 mph. 
.THURSDAY...Partly cloudy. Cooler. Lows in the mid 30s. Highs in
the mid 40s. Minimum RH 38 percent. West winds 10 to 15 mph. 

$$

.OUTLOOK 8 TO 14 DAYS...
Temperatures below normal.  Precipitation above normal.

$$

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