996  
FNUS74 KMEG 040944  
FWSMEG  
 
SPOT FORECAST FOR HS IU 127-1 128-1...USFS  
NATIONAL WEATHER SERVICE MEMPHIS TN  
444 AM CDT THU APR 4 2024  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 04.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
MODERATE NORTHWEST WINDS WILL MIX RELATIVE HUMIDITY VALUES DOWN BELOW  
30 PERCENT ACROSS MUCH OF THE AREA TODAY. THE CHANCE FOR FOG EARLY FRIDAY  
MORNING IS VERY LOW. PATCHY FROST IS POSSIBLE FRIDAY MORNING.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (0-5 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 63.  
MIN HUMIDITY........26 PERCENT.  
DEWPOINT............32 DECREASING TO 28 IN THE AFTERNOON.  
WIND (20 FT)........NORTHWEST WINDS 12 TO 13 MPH WITH GUSTS TO  
AROUND 19 MPH.  
MIXING HEIGHT.......6300 FT AGL.  
MIXING HEIGHT (M)...1158-1920 METERS AGL.  
TRANSPORT WINDS.....NORTHWEST 24 TO 25 MPH.  
TRANSPORT WINDS M/S.NORTHWEST AROUND 11 METERS/SECOND.  
SMOKE DISPERSAL.....POOR (12500 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (21200 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........2 1 1 1 1 0 0 0  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0  
TEMP............55 57 59 61 62 63 63 63  
DEWPOINT........34 31 30 29 29 29 28 28  
RH..............45 37 33 29 28 27 26 26  
20 FT WIND DIR..NW NW NW NW W NW NW NW  
20 FT WIND SPD..12 12 12 13 13 13 13 12  
20 FT WIND GUST.16 18 18 19 19 19 19 18  
MIX HGT (KFT)...3.8 4.8 5.2 5.7 5.9 6.1 6.3 6.3  
MIX HGT (KM)....1.2 1.5 1.6 1.7 1.8 1.9 1.9 1.9  
TRANSP WIND DIR.NW NW NW NW NW NW NW NW  
TRANSP WIND SPD.24 25 25 25 25 25 24 24  
TRANS WIND DIR..NW NW NW NW NW NW NW NW  
TRANS SPD (M/S).11 11 11 11 11 11 11 11  
VRATE KT-FT/1K..13 17 18 20 21 21 21 21  
VENTRATE CAT....PR PR PR PR PR PR PR PR  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR (0-5 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 38.  
MAX HUMIDITY........82 PERCENT.  
DEWPOINT............30 INCREASING TO 34 EARLY IN THE EVENING.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE  
NORTH OVERNIGHT.  
MIXING HEIGHT.......400 FT AGL.  
MIXING HEIGHT (M)...122-1311 METERS AGL.  
TRANSPORT WINDS.....NORTHWEST 13 TO 22 MPH SHIFTING TO THE NORTH 9  
TO 12 MPH EARLY IN THE EVENING, THEN DECREASING  
TO AROUND 7 MPH EARLY IN THE MORNING.  
TRANSPORT WINDS M/S.NORTHWEST 6 TO 10 METERS/SECOND SHIFTING TO THE  
NORTH 4 TO 5 METERS/SECOND EARLY IN THE  
EVENING, THEN DECREASING TO AROUND 3  
METERS/SECOND EARLY IN THE MORNING.  
SMOKE DISPERSAL.....POOR (400 KNOT-FT).  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........0 2 3 2 1 0 0 1 0 1 2 2  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............62 60 57 52 49 47 46 44 43 42 40 40  
DEWPOINT........29 31 34 35 35 35 34 34 34 34 34 34  
RH..............28 33 42 52 58 63 63 68 70 73 79 79  
20 FT WIND DIR..NW NW NW NW NW N N N N N N N  
20 FT WIND SPD..10 8 6 6 6 6 6 5 5 5 5 5  
20 FT WIND GUST.16 12 8 8 10 10 8 8 7 7 6 6  
MIX HGT (KFT)...4.3 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4  
MIX HGT (KM)....1.3 0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1  
TRANSP WIND DIR.NW NW NW NW NW N N N N N N N  
TRANSP WIND SPD.22 13 10 9 10 10 12 10 9 9 9 7  
TRANS WIND DIR..NW NW NW NW NW N N N N N N N  
TRANS SPD (M/S).10 6 4 4 4 4 5 4 4 4 4 3  
VRATE KT-FT/1K..13 1 1 1 1 1 1 1 1 1 1 0  
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (0-5 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........35 PERCENT.  
DEWPOINT............35 INCREASING TO 38 LATE IN THE AFTERNOON.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 7 MPH EARLY IN  
THE MORNING.  
MIXING HEIGHT.......4500 FT AGL.  
MIXING HEIGHT (M)...122-1372 METERS AGL.  
TRANSPORT WINDS.....NORTH 7 TO 12 MPH.  
TRANSPORT WINDS M/S.NORTH 3 TO 5 METERS/SECOND.  
SMOKE DISPERSAL.....POOR (400 KNOT-FT).  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........2 1 1 3  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0  
TEMP............39 46 59 64  
DEWPOINT........34 36 37 37  
RH..............82 68 44 37  
20 FT WIND......N 3G6 N 5G8 N 7G11 NW 7G11  
MIX HGT (FT)....400 2300 4100 4500  
MIX HGT (M).....120 700 1250 1370  
TRANSPORT WIND..N 7 N 10 N 12 N 10  
TRAN WIND (M/S).N 3 N 4 N 5 N 4  
VRATE KT-FT/1K..0 3 6 7  
VENTRATE CAT....POOR POOR POOR POOR  
 

 
FORECASTER...MCNEIL S.  
REQUESTED BY...JOHN TOWNSEND  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2409332.0/MEG  
.DELDT 04/04/24  
.FORMATTERVERSION 2.0.0  
.EMAIL JOHN.TOWNSEND@USDA.GOV  
 
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