Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Fire Weather Forecast Banner for Mercer County

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Fire Weather Planning Forecast for SW VA...SE WV and NW NC
National Weather Service Blacksburg VA
249 PM EDT Tue Aug 4 2026

.DISCUSSION...
Unsettled weather will continue through the remainder of this 
week with scattered showers and thunderstorms each day, 
primarily during the afternoon. The air mass will remain humid
with relative humidity values staying elevated. Winds should
remain rather light except in stronger thunderstorms. Due to 
the abundant moisture and prolonged chances of rain, fire weather
concerns will remain low.

WVZ042-050815-
Mercer-
Including the cities of Bluefield and Flat Top
249 PM EDT Tue Aug 4 2026

                      Tonight      Wed          Wed Night    Thu          

Cloud Cover           Pcldy        Pcldy        Pcldy        Pcldy        
Precip Type           Tstms        Tstms        Tstms        Tstms        
Chance Precip (%)     30           70           60           80           
Chance of Thunder (%) 30           50           50           50           
Min/Max Temp          64           80           64           81           
Max/Min RH %          100          74           100          72           
Wind 20ft/early(mph)  SE  3        Lgt/Var      Lgt/Var      Lgt/Var      
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var      Lgt/Var      
Precip Amount         0.02         0.08         0.05         0.18         
Precip Duration       1            3            1            5            
Precip Begin          6 PM         12 PM        Continuing   8 AM         
Precip End            11 PM        Continuing   11 PM        Continuing   
Mixing Hgt(ft-agl)                 4080                      4860         
Transport Wnd (mph)                S  6                      SW  7        
Vent Rate (mph-ft)                 24480                     34020        
Dispersion            Very Poor                 Very Poor                 
Max ADI Early         40 Fair      17 Gen Poor  17 Gen Poor  23 Fair      
Max ADI Late          4 Very Poor  26 Fair      3 Very Poor  34 Fair      
Max LVORI Early       8            9            9            10           
Max LVORI Late        9            3            10           3            

Remarks...None.

.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms. Lows in the mid 60s. Southwest winds around
5 mph. 
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 74 percent. Southwest winds around 5 mph. 
.FRIDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southwest winds around 5 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 77 percent. Southwest winds around 5 mph. 
.SATURDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms. Lows in the mid 60s. Southwest winds around
5 mph. 
.SUNDAY...Partly sunny with a chance of showers and
thunderstorms. Highs around 80. Minimum RH 68 percent. West winds
around 5 mph. 
.SUNDAY NIGHT...Mostly clear with a slight chance of showers and
thunderstorms. Lows in the mid 60s. Southwest winds around 5 mph.
.MONDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the lower 80s. Minimum RH 65 percent.
West winds around 5 mph. 
.MONDAY NIGHT...Partly cloudy with a slight chance of showers and
thunderstorms. Lows in the upper 60s. Southwest winds around
5 mph. 
.TUESDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs in the lower 80s. Minimum RH 68 percent.
West winds 5 to 10 mph.

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

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