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FNUS51 KRNK 211947

Fire Weather Planning Forecast for SW VA...SE WV and NW NC
National Weather Service Blacksburg VA
347 PM EDT Sat Oct 21 2017


...Dry weather tonight into Sunday to give way to widespread
rainfall early next week... 

High pressure will control our weather tonight into Sunday. A strong 
cold front will approach Sunday night and then cross the region 
Monday through Tuesday, bringing good coverage of showers and some 
gusty winds. High pressure returns to the area by the latter half of 
the upcoming week.

Minimum relative humidity values in the 30 percent to 40 percent 
range this afternoon will steadily increase to well above 50 percent by 
Monday. Light transport winds and a relatively shallow mixing height will
create poor dispersion and ventilation conditions into Sunday, but improving
conditions are expected as winds increase ahead of the approaching cold
front. Rainfall amounts of one half inch east of the Blue Ridge to two 
inches in the mountains are possible from early Monday into Tuesday.

Including the city of Rocky Mount
347 PM EDT Sat Oct 21 2017

                      Tonight      Sun          Sun Night    Mon          

Cloud cover           MClear       MClear       PCldy        Cloudy       
Precip type           None         None         None         Showers      
Chance precip (%)     0            0            0            100          
Min/Max Temp          48           75           55           69           
Max/Min RH %          98           49           94           77           
Wnd20ft2min/Early(mph)Lgt/Var      Lgt/Var      S  4         SE  4        
Wnd20ft2min/Late(mph) Lgt/Var      S  4         S  3         SE  5        
Precip amount         0.00         0.00         0.00         0.29         
Precip duration                                              5            
Precip begin                                                 8 AM         
Precip end                                                   Continuing   
Mixing hgt(ft-AGL)                 3920                      3900         
Transport wnd (mph)                S 12                      S 31         
Vent rate (mph-ft)                 47040                     120900       
Dispersion(evening)   VERY POOR                 POOR                      
LAL                   1            1            1            1            
Haines Index          3            4            3            2            
ADI early             22 FAIR      13 GEN POOR  34 FAIR      26 FAIR      
ADI late              1 VERY POOR  39 FAIR      2 VERY POOR  92 GOOD      
Max LVORI early       4            8            4            9            
Max LVORI late        6            3            7            3            


.MONDAY NIGHT AND TUESDAY...Showers and a chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 60s.
Minimum RH 59 percent. West winds 15 to 20 mph. 
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows in the lower
40s. Highs around 60. Minimum RH 47 percent. West winds 5 to
10 mph. 
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows in the upper
30s. Highs around 60. Minimum RH 45 percent. West winds 5 to
10 mph. 
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows around 40. Highs
in the mid 60s. Minimum RH 52 percent. Southwest winds around
5 mph. 
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 40s.
Highs in the mid 60s. Minimum RH 60 percent. Southwest winds 5 to
10 mph.

Temperatures below normal.  Precipitation above normal.