FNUS51 KRNK 211907
FWFRNK

FIRE WEATHER PLANNING FORECAST FOR SW VA...SE WV AND NW NC
NATIONAL WEATHER SERVICE BLACKSBURG VA
307 PM EDT TUE MAY 21 2013

.DISCUSSION...

FIRE WEATHER THREATS WILL REMAIN LOW INTO THURSDAY...WITH 
SHOWERS AND THUNDERSTORMS IN THE FORECAST. LOW PRESSURE ALOFT
ACROSS SOUTHERN VIRGINIA WILL PUSH EAST INTO THE ATLANTIC
OCEAN TONIGHT. A LARGE LOW PRESSURE SYSTEM WILL TRACK FROM 
THE CENTRAL PLAINS INTO THE GREAT LAKES BY THURSDAY. THIS 
SYSTEM WILL PUSH A COLD FRONT THROUGH THE AREA THURSDAY...FOLLOWED 
BY HIGH PRESSURE ON FRIDAY.

RELATIVE HUMIDITY AS LOW AS THE 40 AND 50S THIS AFTERNOON WILL
REBOUND QUICKLY TONIGHT TO MAXIMUM FROM 85 TO 100 PERCENT. MINIMUM
RELATIVE HUMIDITY WEDNESDAY AFTERNOON WILL VARY FROM THE MID 40S TO
AROUND 70 PERCENT ALONG SOUTHERN BLUE RIDGE.

VAZ022-220915-
ROANOKE-
INCLUDING THE CITIES OF...ROANOKE...SALEM
307 PM EDT TUE MAY 21 2013

                      TONIGHT      WED          WED NIGHT    THU          

CLOUD COVER           PCLDY        PCLDY        MCLDY        PCLDY        
PRECIP TYPE           TSTMS        TSTMS        TSTMS        TSTMS        
CHANCE PRECIP (%)     40           40           40           60           
MIN/MAX TEMP          62           84           62           79           
MAX/MIN RH %          91           46           88           55           
WND20FT2MIN/EARLY(MPH)SW  5        LGT/VAR      S  6         LGT/VAR      
WND20FT2MIN/LATE(MPH) LGT/VAR      S  7         SW  5        SW  5        
PRECIP AMOUNT         0.02         0.06         0.09         0.20         
PRECIP DURATION       3            2            2            5            
PRECIP BEGIN          6 PM         8 AM         CONTINUING   CONTINUING   
PRECIP END            2 AM         CONTINUING   CONTINUING   CONTINUING   
MIXING HGT(FT-AGL)                 7450                      7950         
TRANSPORT WND (MPH)                SW 17                     W 17         
VENT RATE (MPH-FT)                 126650                    135150       
DISPERSION (EVENING)  POOR                      POOR                      
LAL                   3            3            3            3            
HAINES INDEX          4            4            4            4            
ADI EARLY             29 FAIR      51 GEN GOOD  52 GEN GOOD  57 GEN GOOD  
ADI LATE              4 VERY POOR  77 GOOD      17 GEN POOR  61 GOOD      
MAX LVORI EARLY       3            6            3            4            
MAX LVORI LATE        5            1            4            1            

REMARKS...NONE.

.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT AND FRIDAY...MOSTLY CLOUDY. LOWS IN THE MID 50S.
HIGHS AROUND 70. MINIMUM RH 48 PERCENT. NORTHWEST WINDS 10 TO
15 MPH. 
.FRIDAY NIGHT AND SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S.
HIGHS AROUND 70. MINIMUM RH 41 PERCENT. WEST WINDS 5 TO 10 MPH. 
.SATURDAY NIGHT AND SUNDAY...MOSTLY CLOUDY. LOWS IN THE LOWER
50S. HIGHS IN THE LOWER 70S. MINIMUM RH 50 PERCENT. SOUTHEAST
WINDS AROUND 5 MPH. 
.SUNDAY NIGHT AND MONDAY...MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 70S. MINIMUM RH
60 PERCENT. SOUTHEAST WINDS AROUND 5 MPH. 
.MONDAY NIGHT AND TUESDAY...MOSTLY CLOUDY. LOWS IN THE UPPER 50S.
HIGHS IN THE MID 70S. MINIMUM RH 59 PERCENT. SOUTH WINDS AROUND
5 MPH.

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