Jefferson National Forest Presuppresion Forecast

News Headlines

Experimental...Fire Weather Planning Forecast for VA Natl Forests
NATIONAL WEATHER SERVICE Blacksburg VA
400 PM EDT Tue Jul 21 2026

.DISCUSSION...

Widespread showers and thunderstorms continue through Wednesday as 
a cold front slowly sinks south through the region. There will
continue to be quite a bit of lightning through Thursday. A drier
air mass tries to build into SE WV and parts of central VA 
Thursday, while moist air remains elsewhere. Additional chances 
for wetting rain are expected in these more humid locations 
Thursday and Friday. More widespread showers and storms are 
forecast for the weekend. Overall, there are only low fire 
weather concerns at this time given the wetting rains expected.

VAZ007-009-010-012-015-016-220800-
JEFFERSON NATIONAL FOREST South Zone-
INCLUDING Mt Rogers and Wythe
400 PM EDT Tue Jul 21 2026

                      Tonight      Wed          Wed Night    Thu          

Cloud Cover           Mcldy        Mcldy        Pcldy        Pcldy        
Precip Type           Tstms        Tstms        Tstms        Tstms        
Chance Precip (%)     80           70           40           50           
Chance of Thunder (%) 50           50           40           20           
Min/Max Temp          63           77           57           73           
Max/Min RH %          100          71           99           72           
Wind 20ft/early(mph)  SW  8 G21    W  5 G19     Lgt/Var      Lgt/Var      
Wind 20ft/late(mph)   W  7 G22     W  5         Lgt/Var      Lgt/Var      
Precip Amount         0.69         0.54         0.05         0.02         
Precip Duration       8            6            1            1            
Precip Begin          6 PM         Continuing   Continuing   7 AM         
Precip End            Continuing   Continuing   2 AM         Continuing   
Mixing Hgt(ft-agl)                 3250                      3610         
Transport Wnd (mph)                W 12                      S  5         
Vent Rate (mph-ft)                 39000                     18050        
Dispersion            Good                      Very Poor                 
Max ADI Early         41 Gen Good  30 Fair      15 Gen Poor  21 Fair      
Max ADI Late          7 Poor       35 Fair      4 Very Poor  22 Fair      
Max LVORI Early       5            7            7            7            
Max LVORI Late        7            4            7            4            

Remarks...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.FRIDAY...Mostly cloudy with a chance of showers. Lows in the
upper 50s. Highs around 70. Minimum RH 80 percent. Southeast
winds 5 to 10 mph. 
.SATURDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows around 60. Highs in the upper 60s. Minimum RH
89 percent. South winds 5 to 10 mph. 
.SUNDAY...Mostly cloudy. A chance of showers and thunderstorms.
Lows in the lower 60s. Highs in the upper 70s. Minimum RH
69 percent. West winds 5 to 10 mph. 
.MONDAY...Partly cloudy. A chance of showers and thunderstorms.
Lows in the mid 60s. Highs in the upper 70s. Minimum RH
66 percent. West winds 10 to 15 mph. 
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms.
Lows in the mid 60s. Highs in the upper 70s. Minimum RH
63 percent. West winds 10 to 15 mph. 

$$

.OUTLOOK 8 TO 14 DAYS...
Temperatures near normal.  Precipitation near normal.

$$

Radar