567  
FNUS71 KRNK 231224  
FWSRNK  
 
SPOT FORECAST FOR COFFEE POT...USFS  
NATIONAL WEATHER SERVICE BLACKSBURG VA  
824 AM EDT MON APR 23 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON APRIL 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
CLOUDS WILL INCREASE AND LOWER TODAY, WITH RAIN MOVING AFTER  
2-3PM. THE 20 FOOT WINDS WILL STAY OUT OF THE SOUTHEAST AT 5 TO 10  
MPH, WITH GUSTS TO 15 MPH THROUGH THE DAY, SOME OCCASIONAL GUSTS  
TO 20 MPH THIS AFTERNOON. THE MORE SUBSTANTIAL RAIN DOES NOT  
ARRIVE UNTIL AFTER 7PM THIS EVENING.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF RAIN  
EARLY IN THE AFTERNOON.  
CWR (0.01 IN).......10 PERCENT INCREASING TO 50 PERCENT.  
MAX TEMPERATURE.....AROUND 61.  
MIN HUMIDITY........47 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 6 TO 10 MPH, GUSTS TO 15 MPH.  
MIXING HEIGHT.......3200 FT AGL INCREASING TO 4700 FT AGL IN THE  
AFTERNOON.  
MIXING WINDS........SOUTHEAST 8 TO 16 MPH INCREASING TO 20 TO 25  
MPH IN THE AFTERNOON.  
LVORI...............2.  
ADI.................18 INCREASING TO 72.  
HAINES INDEX........2 TO 4 OR OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........62 68 75 83 91 98 100 100 100  
WEATHER COV..... SCH CHC CHC CHC CHC  
WEATHER TYPE.... RN RN RN RN RN  
TSTM COV........  
CWR.............0 10 10 10 20 30 30 40 50  
TEMP............52 53 54 56 58 61 61 61 61  
RH..............61 59 56 54 50 47 47 49 50  
20 FT WIND DIR..E SE SE SE SE SE SE SE E  
20 FT WIND SPD..6 7 7 8 7 7 7 6 6  
20 FT WIND GUST.10 11 12 15 14 12 11 11 10  
MIX HGT (KFT)...1.6 2.2 2.8 3.2 3.6 4.0 4.2 4.4 4.7  
MIXNG WIND DIR..E SE SE SE SE SE SE SE SE  
MIXNG WIND SPD..8 13 16 20 22 23 24 25 24  
LVORI...........3 1 1 1 1 1 1 1 1  
ADI.............18 33 37 47 57 65 70 73 73  
HAINES INDEX....3 3 4 3 3 2 2 3 3  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN.  
CWR (0.01 IN).......60 PERCENT INCREASING TO 100 PERCENT.  
MIN TEMPERATURE.....AROUND 46.  
MAX HUMIDITY........89 PERCENT.  
WIND (20 FT)........EAST WINDS 6 TO 7 MPH.  
MIXING HEIGHT.......2500 FT AGL DECREASING TO 1800 FT AGL LATE IN  
THE EVENING.  
MIXING WINDS........SOUTHEAST 15 TO 24 MPH SHIFTING TO THE EAST 14  
TO 20 MPH LATE IN THE EVENING.  
LVORI...............3.  
ADI.................67 DECREASING TO 22.  
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........100 100 100 100 100 100  
WEATHER COV.....LIKELY LIKELY DEFNTE DEFNTE DEFNTE DEFNTE  
WEATHER TYPE....RAIN RAIN RAIN RAIN RAIN RAIN  
TSTM COV........  
CWR.............60 70 80 80 90 90  
TEMP............59 55 52 50 49 48  
RH..............56 69 79 84 85 85  
20 FT WIND......SE 6 SE 6 E 6 E 6 E 7 E 7  
20 FT WIND GUST.10 8 10 10 11 11  
MIX HGT (FT)....4200 3100 2500 2100 2000 1800  
MIXING WIND......SE 24 S 21 SE 15 SE 15 SE 20 E 18  
LVORI...........1 3 3 3 3 4  
ADI.............67 27 20 20 22 20  
HAINES INDEX....3 2 2 2 2 2  
   
TUESDAY
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN.  
CWR (0.01 IN).......90 PERCENT DECREASING TO 80 PERCENT LATE IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 54.  
MIN HUMIDITY........78 PERCENT.  
WIND (20 FT)........EAST WINDS 6 TO 7 MPH.  
MIXING HEIGHT.......2000 FT AGL.  
MIXING WINDS........EAST 17 TO 24 MPH.  
LVORI...............4.  
ADI.................20 INCREASING TO 35 EARLY IN THE MORNING, THEN  
INCREASING TO 43 IN THE LATE MORNING AND  
AFTERNOON DECREASING TO 37 LATE IN THE  
AFTERNOON.  
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........100 100 100 100 99 99  
WEATHER COV.....DEFNTE DEFNTE DEFNTE DEFNTE DEFNTE DEFNTE  
WEATHER TYPE....RAIN RAIN RAIN RAIN RAIN RAIN  
TSTM COV........  
CWR.............90 90 90 90 90 90  
TEMP............47 47 49 51 52 53  
RH..............86 87 85 81 80 79  
20 FT WIND......E 7 E 7 E 7 E 7 E 6 E 6  
20 FT WIND GUST.11 13 14 13 13 13  
MIX HGT (FT)....1700 1600 1900 2000 2000 2000  
MIXING WIND......E 17 E 20 E 23 E 24 E 22 E 21  
LVORI...........4 4 4 3 3 3  
ADI.............20 33 43 47 42 39  
HAINES INDEX....2 2 2 2 2 3  
 

 
FORECASTER...PERRY  
REQUESTED BY...NICK JEROS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1807163.5/RNK  
.DELDT 04/23/18  
 
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