FNUS71 KRNK 240142 FWSRNK SPOT FORECAST FOR GRASSY HILL II...DCR NATIONAL WEATHER SERVICE BLACKSBURG VA 942 PM EDT MON MAR 23 2009 FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MARCH 24. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... ...LOW RELATIVE HUMIDITIES EXPECTED TUESDAY AFTERNOON... DRY HIGH PRESSURE IS CENTERED JUST TO OUR NORTHEAST...OVER NEW ENGLAND. CLOCKWISE WIND FLOW AROUND THE HIGH WILL KEEP WINDS OUT OF AN EASTERLY DIRECTION...WINDS TUESDAY MORNING FROM THE NORTHEAST...THEN TURNING MORE EASTERLY DURING THE AFTERNOON... AND THEN SOUTHEAST BY EVENING. THE RH WILL BOTTOM OUT DURING THE MID AND LATE AFTERNOON...LIKE IT DID MONDAY. THE RH MINIMUM AT THE ROANOKE REGIONAL AIRPORT ON MONDAY HIT 24 PERCENT AT AROUND 1600 EDT. SIMILAR CONDITIONS ARE EXPECTED TUESDAY. THE REASONING BEHIND LOWERING THE RH FORECAST WAS DUE TO THE FACT IT WAS SO DRY MONDAY...RH MIN AT ROANOKE WAS 24 PERCENT...LYNCHBURG DIPPED TO 29 PERCENT...DANVILLE 29 PERCENT...MARTINSVILLE 24 PERCENT. ALL OF THESE OBSERVATIONS CAME FROM THE RESPECTIVE AIRPORTS IN AN EXPOSED AREA. FIGURE THE EXPOSED RIDGE TOP OF GRASSY HILL WOULD HAVE SIMILAR CONDITIONS. && .REST OF TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). MIN TEMPERATURE.....AROUND 35. MAX HUMIDITY........63 PERCENT. WIND (20 FT)........LIGHT AND VARIABLE WINDS. CWR (0.01 IN).......0 PERCENT. MIXING HEIGHT.......300 FT AGL. MIXING WINDS........SOUTH 0 TO 3 MPH. TIME (EDT) 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........7 9 11 11 10 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............51 47 43 39 37 RH..............40 46 55 62 62 20 FT WIND......S 2 SW 1 E 2 E 2 E 2 20 FT WIND GUST. 5 5 5 .TUESDAY... SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER). MAX TEMPERATURE.....AROUND 58. MIN HUMIDITY........25 PERCENT. WIND (20 FT)........3-5 MPH NORTHEAST WIND IN THE MORNING...BECOMING SOUTHEAST 5 TO 7 MPH IN THE AFTERNOON. THERE MAY BE SOME GUSTS OF 10-12 MPH AT THE TOP OF THE RIDGE DURING THE AFTERNOON. CWR (0.01 IN).......0 PERCENT. MIXING HEIGHT.......2400 FT AGL. MIXING WINDS........SOUTHEAST 4 TO 10 MPH. TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........11 13 17 21 22 23 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............36 38 43 48 52 58 RH..............60 48 34 27 25 25 20 FT WIND......NE 3 NE 5 E 5 E 4 E 4 SE 5 20 FT WIND GUST.5 10 5 5 10 10 $$ FORECASTER...MANUEL REQUESTED BY...CLAIBORNE WOODALL TYPE OF REQUEST...PRESCRIBED .TAG 20090324.GRASS.02/RNK