436  
FNUS72 KCAE 210833  
FWSCAE  
 
SPOT FORECAST FOR SRS CPT 25...USFS - SAVANNAH RIVER  
NATIONAL WEATHER SERVICE COLUMBIA SC  
333 AM EST FRI FEB 21 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 EST ON FEBRUARY 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
CLEAR, DRY AND COOL TODAY WITH DAYTIME RELATIVE  
HUMIDITY MINIMUM AROUND 25 TO 28 PERCENT. WINDS WILL GENERALLY  
BE LIGHT OUT OF THE NORTH TO NORTHEAST MUCH OF THE DAY. WINDS  
THEN GO NEARLY CALM OVERNIGHT TONIGHT WITH TEMPERATURES DROPPING  
INTO THE MIDDLE 20S AND GOOD RH RECOVERIES. SUNNY ON SATURDAY  
AS HIGH PRESSURE CONTINUES TO BE IN CONTROL WITH LIGHT WINDS A BIT  
MORE VARIABLE FROM NORTHEAST TO SOUTH. A FEW DEGREES WARMER WITH  
MINIMUM RH CLOSER TO 30 PERCENT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 48.  
MIN HUMIDITY........27 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 6 MPH.  
MIXING HEIGHT.......4000 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 14 MPH.  
LVORI...............2.  
ADI.................18 TO 42.  
 
TIME (EST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........1 0 0 0 0 1 3 5 6 14 19  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0  
TEMP............24 26 29 33 38 41 44 46 47 48 46  
RH..............57 55 48 41 35 33 30 28 28 27 31  
APARNT TMP (F)..20 20 24 28 34 38 42 45 47 48 46  
20 FT WIND DIR..N N N NE NE NE N N N N N  
20 FT WIND DIR..010 010 020 030 030 030 020 010 000 000 000  
20 FT WIND SPD..3 5 5 6 5 5 3 3 2 2 2  
20 FT WIND GUST.6 7 7 8 7 6 5 5 3 3 3  
MIX HGT (KFT)...2.2 2.4 2.5 2.5 3.0 3.3 3.5 3.8 4.0 3.8 3.5  
TRANSP WIND DIR.N N N N N N N N N N N  
TRANSP WIND DIR.010 010 020 020 020 020 020 010 000 350 350  
TRANSP WIND SPD.14 14 14 13 10 7 5 5 5 5 5  
LVORI...........1 1 1 1 1 2 2 2 2 2 2  
ADI.............38 42 42 40 37 29 20 18 20 21 19  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MIN TEMPERATURE.....AROUND 26.  
MAX HUMIDITY........74 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....NORTHEAST AROUND 2 MPH.  
LVORI...............3.  
ADI.................1.  
 
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........18 29 23 21 15 17 20 22 23 25 25 23  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............43 38 36 34 33 30 30 29 28 27 27 26  
RH..............38 46 50 56 58 66 66 66 68 71 71 74  
APARNT TMP (F)..43 38 36 34 33 30 30 29 28 27 27 26  
20 FT WIND DIR..N N N N N N N N NE NE NE NE  
20 FT WIND DIR..020 020 020 000 000 000 000 000 040 030 050 060  
20 FT WIND SPD..1 1 1 0 0 0 0 0 1 1 1 1  
20 FT WIND GUST.2  
MIX HGT (KFT)...0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4  
TRANSP WIND DIR.N N N N N N NE NE NE NE NE NE  
TRANSP WIND DIR.000 000 010 010 020 020 030 040 040 040 040 040  
TRANSP WIND SPD.2 2 2 2 2 2 2 2 2 2 2 2  
LVORI...........2 2 2 3 3 3 3 3 3 3 3 3  
ADI.............1 1 1 1 1 1 1 1 1 1 1 1  
   
SATURDAY
 
 
SKY/WEATHER.........SUNNY (20-30 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 54.  
MIN HUMIDITY........31 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......4600 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 2 TO 7 MPH SHIFTING TO THE SOUTH 9 TO  
12 MPH IN THE AFTERNOON.  
LVORI...............2.  
ADI.................2 EARLY IN THE MORNING INCREASING TO 62 IN THE  
AFTERNOON.  
 
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........18 10 16 14 16 17 26 28 29 32 36 39  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............26 27 29 35 42 47 50 52 54 54 54 53  
RH..............74 68 66 56 44 37 34 32 31 32 34 36  
APARNT TMP (F)..26 27 29 35 42 47 50 52 54 54 54 53  
20 FT WIND DIR..NE NE NE E E E SE SE S S SW SW  
20 FT WIND DIR..050 060 050 070 090 110 130 150 170 190 210 230  
20 FT WIND SPD..1 1 1 1 2 2 2 2 2 2 2 2  
20 FT WIND GUST.2 3 5 6 6 6 7 7 7 7 6 5  
MIX HGT (KFT)...0.4 0.4 0.6 1.2 2.0 2.6 3.2 3.7 4.0 4.3 4.6 3.2  
TRANSP WIND DIR.NE NE NE E E SE S S S S S S  
TRANSP WIND DIR.050 050 060 090 110 130 170 190 190 200 200 200  
TRANSP WIND SPD.2 3 5 7 10 10 10 10 12 12 12 9  
LVORI...........3 3 3 2 2 1 1 1 1 1 1 1  
ADI.............2 3 5 10 26 35 41 46 54 61 62 34  
 

 
FORECASTER...CARPENTER  
REQUESTED BY...KEVIN POPE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2503384.0/CAE  
.DELDT 02/21/25  
.FORMATTERVERSION 2.0.0  
.EMAIL KEVIN.POPE@USDA.GOV  
 
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