747  
FNUS74 KHUN 072202 CCA  
FWSHUN  
 
SPOT FORECAST FOR MP 309 PILE BURN...NPS  
NATIONAL WEATHER SERVICE HUNTSVILLE AL  
632 AM CDT THU JUN 7 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON JUNE 07.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
PILE BURN 309 WILL BE LOCATED IN AN AREA OF RELATIVELY BENIGN WEATHER  
CONDITIONS TODAY THROUGH FRIDAY. AN AREA OF HIGH PRESSURE JUST TO THE  
WEST OF THE AREA INITIALLY WILL MOVE TO THE NORTHEAST THROUGH THE DAY.  
NORTHWESTERN ALABAMA WILL BE CLOSER TO THE AXIS OF THE PRESSURE CENTER  
AND CAN EXPECT MOSTLY LIGHT WINDS FROM THE NORTHEAST THROUGH THE DAY.  
RELATIVE HUMIDITY VALUES WILL FALL THROUGH THE MORNING, REACHING A  
MINIMUM EARLY IN THE AFTERNOON, AT ABOUT 40 PERCENT. MIXING HEIGHTS WILL  
REACH A MAXIMUM IN THE EARLY AFTERNOON, WITH VALUES TO PERHAPS AS HIGH  
AS 8000 FEET DURING PEAK MIXING. AN ISOLATED SHOWER COULD NOT BE RULED  
OUT TODAY OR TOMORROW, BUT IS NOT LIKELY. THE BEST CHANCES FOR ANY  
SHOWER OR THUNDERSTORM ACTIVITY WILL BE IN NORTHEASTERN ALABAMA, MAINLY  
ON FRIDAY AFTERNOON AND ESPECIALLY ON SATURDAY.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 92.  
MIN HUMIDITY........40 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
CHANCE OF PCPN......10 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......1100-2700 FT AGL INCREASING TO 7400-8100 FT  
AGL.  
TRANSPORT WINDS.....NORTHEAST 1 TO 3 MPH.  
LVORI...............2.  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........MCR MCR MCR MCR MCR MCR MCR MCR  
WEATHER COV.....  
WEATHER TYPE....  
TEMP............84 87 89 90 91 92 92 91  
RH..............51 46 44 42 41 40 41 42  
20 FT WIND DIR..050 050 040 040 040 030 020 030  
20 FT WIND SPD..3 3 3 3 3 3 3 3  
20 FT WIND GUST.4 4 4 4 4 4 5 4  
MIX HGT (KFT)...1.1 2.7 4.6 6.3 7.4 8.1 8.1 7.6  
TRANSP WIND DIR.150 120 070 050 050 040 040 050  
TRANSP WIND SPD.1 2 3 3 3 2 2 2  
DISPERSION IDX..1 10 21 26 27 19 19 20  
LVORI...........2 2 2 2 2 2 2 2  
CHC OF PCPN (%).0 0 0 10 10 10 10 10  
LAL.............1 1 1 1 1 1 1 1  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
MIN TEMPERATURE.....AROUND 66.  
MAX HUMIDITY........97 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
CHANCE OF PCPN......10 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......5100-6500 FT AGL DECREASING TO 0-200 FT AGL.  
TRANSPORT WINDS.....EAST 0 TO 2 MPH.  
LVORI...............6.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TEMP............88 82 75 72 69 67  
RH..............47 56 71 79 87 93  
20 FT WIND DIR..040 050 070 080 080 080  
20 FT WIND SPD..2 2 3 3 3 3  
20 FT WIND GUST. 5 5 5 5  
MIX HGT (FT)....6500 3400 200 BLW100 200 200  
TRANSPORT WIND..NE 2 NE 1 NE 0 E 1 E 2 E 2  
DISPERSION IDX..20 10 0 1 1 1  
LVORI...........2 2 4 4 6 9  
CHC OF PCPN (%).10 10 0 0 0 0  
LAL.............1 1 1 1 1 1  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........40 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
CHANCE OF PCPN......10 PERCENT.  
LAL.................1.  
MIXING HEIGHT.......0-1600 FT AGL INCREASING TO 8200-9100 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 1 TO 2 MPH.  
LVORI...............6.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........CLEAR CLEAR MCLEAR MCLEAR MCLEAR MCLEAR  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TEMP............66 73 86 92 94 93  
RH..............97 76 51 43 40 41  
20 FT WIND DIR..070 080 100 090 080 070  
20 FT WIND SPD..2 2 2 3 3 3  
20 FT WIND GUST. 4 5 4  
MIX HGT (FT)....BLW100 1600 5400 8000 9100 8700  
TRANSPORT WIND..E 1 E 1 NE 2 NE 2 NE 2 NE 1  
DISPERSION IDX..1 1 1 21 20 9  
LVORI...........9 4 2 2 2 2  
CHC OF PCPN (%).10 10 10 10 10 10  
LAL.............1 1 1 1 1 1  
 

 
FORECASTER...WHITE  
REQUESTED BY...WILL HILTON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1811156.1/HUN  
.DELDT 06/07/18  
.EMAIL WILLIAM_HILTON@NPS.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab AL Page
The Nexlab TN Page Main Text Page