Grayson County Requested Product
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FNUS51 KRNK 041951
FWFRNK

FIRE WEATHER PLANNING FORECAST FOR SW VA...SE WV AND NW NC
NATIONAL WEATHER SERVICE BLACKSBURG VA
351 PM EDT FRI SEP 4 2015

.DISCUSSION...

SPOTTY SHOWERS AND THUNDERSTORM WILL DRIFT ACROSS THE AREA THIS 
EVENING...RESULTING IN HIT AND MISS RAINFALL WITH LOCALIZED ONE 
INCH AMOUNTS. BETTER COVERAGE WILL BE FOUND ACROSS THE PIEDMONT 
AND THE MOUNTAINS NORTH OF HIGHWAY 460. THIS ACTIVITY IS 
DEVELOPING AHEAD OF A WEAK COLD FRONT DROPPING SOUTH ACROSS THE 
AREA TONIGHT. 

HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT...WEDGING AGAINST 
THE APPALACHIANS TO BRING SOMEWHAT COOLER AND DRIER WEATHER FOR 
THE WEEKEND...ALTHOUGH SPOTTY SHOWERS WILL STILL BE POSSIBLE 
ACROSS THE MOUNTAINS AND THE PIEDMONT OF NORTH CAROLINA...WHERE 
THE INFLUENCE OF HIGH PRESSURE REMAINS WEAKEST.

THE WEDGE WILL BREAK MONDAY NIGHT AND TUESDAY. MOISTURE AND ABOVE 
NORMAL TEMPERATURES WILL RETURN FOR WEDNESDAY AND THURSDAY ALONG
WITH A BETTER CHANCE OF SHOWERS AND THUNDERSTORMS AHEAD OF A COLD
FRONT. 

&&

VAZ015-050930-
GRAYSON-
INCLUDING THE CITIES OF...INDEPENDENCE...WHITETOP...TROUTDALE...
VOLNEY
351 PM EDT FRI SEP 4 2015

                      TONIGHT      SAT          SAT NIGHT    SUN          

CLOUD COVER           PCLDY        MCLDY        MCLDY        MCLDY        
PRECIP TYPE           TSTMS        TSTMS        TSTMS        TSTMS        
CHANCE PRECIP (%)     50           30           30           40           
MIN/MAX TEMP          60           73           59           75           
MAX/MIN RH %          100          72           97           70           
WND20FT2MIN/EARLY(MPH)LGT/VAR      E  3         LGT/VAR      LGT/VAR      
WND20FT2MIN/LATE(MPH) LGT/VAR      E  4         E  3         SE  3        
PRECIP AMOUNT         0.16         0.11         0.02         0.03         
PRECIP DURATION       2            2            2            2            
PRECIP BEGIN          6 PM         CONTINUING   CONTINUING   CONTINUING   
PRECIP END            CONTINUING   CONTINUING   CONTINUING   CONTINUING   
MIXING HGT(FT-AGL)                 4840                      5540         
TRANSPORT WND (MPH)                E  7                      SE  7        
VENT RATE (MPH-FT)                 33880                     38780        
DISPERSION (EVENING)  VERY POOR                 VERY POOR                 
LAL                   3            2            3            2            
HAINES INDEX          4            3            3            3            
ADI EARLY             23 FAIR      18 GEN POOR  15 GEN POOR  25 FAIR      
ADI LATE              3 VERY POOR  18 GEN POOR  5 VERY POOR  21 FAIR      
MAX LVORI EARLY       4            9            6            7            
MAX LVORI LATE        6            3            6            3            

REMARKS...NONE.

.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY NIGHT AND MONDAY...MOSTLY CLOUDY. A CHANCE OF SHOWERS.
LOWS AROUND 60. HIGHS IN THE MID 70S. MINIMUM RH 61 PERCENT. EAST
WINDS AROUND 5 MPH. 
.MONDAY NIGHT AND TUESDAY...PARTLY CLOUDY. A CHANCE OF SHOWERS.
LOWS AROUND 60. HIGHS IN THE UPPER 70S. MINIMUM RH 59 PERCENT.
SOUTH WINDS AROUND 5 MPH. 
.TUESDAY NIGHT AND WEDNESDAY...MOSTLY CLOUDY. A CHANCE OF
SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 70S. MINIMUM
RH 60 PERCENT. SOUTHWEST WINDS AROUND 5 MPH. 
.WEDNESDAY NIGHT AND THURSDAY...MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 70S. MINIMUM
RH 63 PERCENT. WEST WINDS AROUND 5 MPH. 
.THURSDAY NIGHT AND FRIDAY...MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE MID 70S. MINIMUM RH
70 PERCENT. WEST WINDS AROUND 5 MPH.

.OUTLOOK 8 TO 14 DAYS...
TEMPERATURES ABOVE NORMAL.  PRECIPITATION ABOVE NORMAL.


 

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