Alleghany County Requested Product
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FNUS51 KRNK 310920
FWFRNK

FIRE WEATHER PLANNING FORECAST FOR SW VA...SE WV AND NW NC
NATIONAL WEATHER SERVICE BLACKSBURG VA
520 AM EDT TUE MAR 31 2015

RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EDT
THIS EVENING FOR THE ALLEGHANY HIGHLANDS AND THE SHENANDOAH VALLEY

.DISCUSSION...

WESTERLY WIND FLOW REMAINED IN PLACE OVERNIGHT...MAINTAINING LOW 
HUMIDITY WHICH ALLOWED FOR ONLY MODEST RECOVERY OF FUEL MOISTURES. 
THE DOWNSLOPE FLOW WILL COMBINE WITH ABUNDANT SUNSHINE THIS MORNING 
TO CAUSE TEMPERATURES TO SPIKE QUICKLY AFTER SUNRISE...AND CAUSE 
RH VALUES TO DROP TO AROUND 20 PERCENT THIS AFTERNOON FOR MUCH OF 
THE AREA.

A DEEP LOW PRESSURE SYSTEM WILL PASS ACROSS THE SOUTHERN GREAT 
LAKES THIS AFTERNOON...CAUSING WINDS TO SHIFT MORE SOUTHWESTERLY 
AFTER SUNRISE AND WIND SPEEDS TO INCREASE. WIND SPEEDS BY EARLY 
AFTERNOON WILL INCREASE TO 10-20 MPH AND GUST TO AROUND 30 MPH FOR 
MOST OF THE FORECAST AREA. GUSTS AS HIGH AS 40 MPH CAN BE EXPECTED 
ACROSS THE HIGHER RIDGES.

THE LOW PRESSURE SYSTEM WILL DRAG A COLD FRONT ACROSS THE FORECAST 
AREA THIS EVENING...TRIGGERING SPOTTY SHOWER ACTIVITY WITH ONLY A 
FEW HUNDREDTHS OF AN INCH OF WETTING RAINFALL...MAINLY ACROSS THE 
RIDGES OF SOUTHEAST WEST VIRGINIA INTO THE ALLEGHANY HIGHLANDS...
ALONG WITH SOME INCREASED CLOUD COVER.

FUELS WILL CONTINUE TO DRY OUT THROUGH MIDWEEK. HIGH PRESSURE 
BUILDS OVERHEAD ON WEDNESDAY...RESULTING IN LIGHT WINDS...THEN MOVES 
OFFSHORE ON THURSDAY. MOISTURE RETURNS WITH SHOWERY WEATHER ANTICIPATED 
FOR THURSDAY NIGHT INTO EARLY SATURDAY.

&&

VAZ019-312215-
ALLEGHANY VA-
INCLUDING THE CITIES OF...CLIFTON FORGE...COVINGTON
520 AM EDT TUE MAR 31 2015

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EDT
THIS EVENING...

                      TODAY        TONIGHT      WED          

CLOUD COVER           PCLDY        MCLEAR       MCLEAR       
PRECIP TYPE           SHOWERS      NONE         NONE         
CHANCE PRECIP (%)     20           0            0            
MAX/MIN TEMP          68           34           59           
MIN/MAX RH %          24           80           29           
WND20FT2MIN/EARLY(MPH)SW  5G20     W 11G30      NW  4        
WND20FT2MIN/LATE(MPH) W 14G31      NW  7G20     NW  4        
PRECIP AMOUNT         0.00         0.00         0.00         
PRECIP DURATION       0                                      
PRECIP BEGIN          3 PM                                   
PRECIP END            6 PM                                   
MIXING HGT(FT-AGL)    8480                      6400         
TRANSPORT WND (MPH)   W 35                      NW 13        
VENT RATE (MPH-FT)    296800                    83200        
DISPERSION (EVENING)               GOOD                      
LAL                   1            1            1            
HAINES INDEX          5            3            4            
ADI EARLY             48 GEN GOOD  101 VERY GOOD48 GEN GOOD  
ADI LATE              148 VERY GOOD21 FAIR      80 GOOD      
MAX LVORI EARLY       3            2            3            
MAX LVORI LATE        1            3            1            

REMARKS...NONE.

.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT AND THURSDAY...MOSTLY CLEAR. LOWS AROUND 40.
HIGHS IN THE MID 60S. MINIMUM RH 45 PERCENT. SOUTH WINDS 10 TO
15 MPH. 
.THURSDAY NIGHT AND FRIDAY...CLOUDY WITH SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE
UPPER 60S. MINIMUM RH 66 PERCENT. SOUTHWEST WINDS 15 TO 20 MPH. 
.FRIDAY NIGHT AND SATURDAY...SHOWERS...COOLER. LOWS IN THE LOWER
40S. HIGHS IN THE MID 50S. MINIMUM RH 44 PERCENT. NORTHWEST WINDS
15 TO 20 MPH. 
.SATURDAY NIGHT AND SUNDAY...PARTLY CLOUDY. LOWS IN THE MID 30S.
HIGHS IN THE UPPER 50S. MINIMUM RH 35 PERCENT. WEST WINDS 5 TO
10 MPH. 
.SUNDAY NIGHT AND MONDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S.
HIGHS IN THE UPPER 50S. MINIMUM RH 44 PERCENT. SOUTH WINDS 5 TO
10 MPH.

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

Note: Please review the Request Procedures before submitting a request. Certain limitations apply.