Grayson County Requested Product
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FNUS51 KRNK 211957
FWFRNK

FIRE WEATHER PLANNING FORECAST FOR SW VA...SE WV AND NW NC
NATIONAL WEATHER SERVICE BLACKSBURG VA
257 PM EST SUN DEC 21 2014

.DISCUSSION...
A DEVELOPING COLD AIR WEDGE WILL CREATE POOR VENTILATION AND DISPERSION
TONIGHT THROUGH TUESDAY. WARM AND MOIST AIR OVERSPREADING COLD HIGH 
PRESSURE AT THE SURFACE TO BRING LIGHT WETTING RAIN...ALONG WITH SOME 
SLEET AND FREEZING RAIN...TO THE REGION TONIGHT INTO MONDAY. A VERY STRONG 
COLD FRONT WILL MOVE THROUGH ON WEDNESDAY...BRINGING RAIN AND GUSTY 
WINDS TO THE AREA FOR CHRISTMAS EVE. HIGH PRESSURE WILL THEN BUILD 
OVER THE EASTERN UNITED STATES WITH FAIR AND SEASONABLE WEATHER 
THROUGH THE END OF THE WEEK.

&&

VAZ015-220915-
GRAYSON-
INCLUDING THE CITIES OF...INDEPENDENCE...WHITETOP...TROUTDALE...
VOLNEY
257 PM EST SUN DEC 21 2014

                      TONIGHT      MON          MON NIGHT    TUE          

CLOUD COVER           MCLDY        CLOUDY       MCLDY        MCLDY        
PRECIP TYPE           FRZ RAIN     FRZ RAIN     RAIN         RAIN         
CHANCE PRECIP (%)     60           50           40           70           
MIN/MAX TEMP          31           39           34           50           
MAX/MIN RH %          98           79           99           77           
WND20FT2MIN/EARLY(MPH)SE  3        SE  3        SE  4        SE  5        
WND20FT2MIN/LATE(MPH) SE  3        SE  4        SE  4        S  6         
PRECIP AMOUNT         0.03         0.04         0.00         0.11         
PRECIP DURATION       3            4            2            5            
PRECIP BEGIN          9 PM         CONTINUING   CONTINUING   CONTINUING   
PRECIP END            CONTINUING   CONTINUING   CONTINUING   CONTINUING   
MIXING HGT(FT-AGL)                 1790                      1760         
TRANSPORT WND (MPH)                SE  7                     S 15         
VENT RATE (MPH-FT)                 12530                     26400        
DISPERSION (EVENING)  VERY POOR                 POOR                      
LAL                   1            1            1            1            
HAINES INDEX          2            2            4            3            
ADI EARLY             7 POOR       7 POOR       8 POOR       10 POOR      
ADI LATE              7 POOR       9 POOR       4 VERY POOR  16 GEN POOR  
MAX LVORI EARLY       4            7            7            7            
MAX LVORI LATE        5            7            7            4            

REMARKS...NONE.

.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY NIGHT AND WEDNESDAY...RAIN. LOWS IN THE MID 40S. HIGHS
IN THE MID 50S. MINIMUM RH 77 PERCENT. SOUTH WINDS 10 TO 15 MPH. 
.WEDNESDAY NIGHT AND THURSDAY...MOSTLY CLOUDY. A CHANCE OF RAIN
SHOWERS. COLDER. LOWS IN THE LOWER 30S. HIGHS IN THE MID 30S.
MINIMUM RH 59 PERCENT. WEST WINDS 15 TO 20 MPH. 
.THURSDAY NIGHT AND FRIDAY...MOSTLY CLEAR. NOT AS COOL. LOWS IN
THE LOWER 30S. HIGHS IN THE UPPER 40S. MINIMUM RH 42 PERCENT.
SOUTHWEST WINDS 10 TO 15 MPH. 
.FRIDAY NIGHT AND SATURDAY...MOSTLY CLOUDY. LOWS IN THE MID 30S.
HIGHS IN THE MID 40S. MINIMUM RH 57 PERCENT. WEST WINDS 10 TO
15 MPH. 
.SATURDAY NIGHT AND SUNDAY...MOSTLY CLOUDY. COLDER. LOWS IN THE
MID 20S. HIGHS IN THE MID 30S. MINIMUM RH 46 PERCENT. NORTHWEST
WINDS 10 TO 15 MPH.

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


 

Site specific forecasts for wildfires and prescribed burns may be obtained by contacting the National Weather Service in Blacksburg, VA at (540) 552-0084 or by submitting a Spot Request over the Internet.

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