194  
FNUS73 KPAH 251308  
FWSPAH  
 
SPOT FORECAST FOR BIG SPRING PILE BURN...NATIONAL PARK SERVICE  
NATIONAL WEATHER SERVICE PADUCAH KY  
808 AM CDT TUE JUL 25 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON JULY 25.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
A FRONTAL BOUNDARY IN THE VICINITY WILL RESULT IN A CONTINUED CHANCE  
FOR SCATTERED SHOWERS AND THUNDERSTORMS TODAY THROUGH TONIGHT.  
IT WILL BE QUITE WARM AND HUMID AS WELL.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). ISOLATED SHOWERS  
AND THUNDERSTORMS IN THE LATE MORNING AND  
AFTERNOON.  
CWR.................10 PERCENT.  
TEMPERATURE.........81 AT IGNITION...MAX 95.  
RH..................83 PERCENT AT IGNITION...MIN 45 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WINDS SOUTHEAST AT 3 MPH AT  
IGNITION...BECOMING SOUTHEAST 5 TO 6 MPH  
LATE IN THE AFTERNOON.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS IN THE LATE MORNING AND  
AFTERNOON.  
MIXING HEIGHT.......1900 FT AGL AT IGNITION...  
INCREASING TO 6000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 0 TO 6 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH AT IGNITION...MAX 5.  
 
TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM  
SKY COVER.......PCLDY MCLEAR PCLDY PCLDY MCLEAR  
WEATHER COV..... ISOLTD ISOLTD ISOLTD ISOLTD  
WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ ISOLTD ISOLTD ISOLTD ISOLTD  
CWR.............0 10 10 10 10  
TEMP............81 89 94 95 93  
RH..............83 62 47 45 49  
20 FT WIND DIR..SE S W S SE  
20 FT WIND SPD..3 2 3 3 6  
20 FT WIND GUST.5 5 5 5 10  
MIX HGT (FT)....1900 4100 6000 6000 6000  
TRANSP WIND DIR.S SW W W SW  
TRANSP WIND SPD.2 3 6 5 3  
HAINES INDEX....4 4 4 5 5  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.  
PATCHY FOG EARLY IN THE MORNING.  
CWR.................10 PERCENT.  
TEMPERATURE.........MIN 72.  
RH..................MAX 100 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 6 MPH IN THE EVENING  
BECOMING LIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
MIXING HEIGHT.......6000 FT AGL DECREASING TO 800-1500 FT  
AGL.  
TRANSPORT WINDS.....SOUTHWEST 2 TO 5 MPH.  
HAINES INDEX........3 TO 5 OR VERY LOW TO MODERATE POTENTIAL  
FOR LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR  
WEATHER COV.....ISOLTD S CHC PATCHY  
WEATHER TYPE....RNSHWR RNSHWR NONE NONE NONE FOG  
TSTM COV........ISOLTD S CHC  
CWR.............10 0 0 0 0 0  
TEMP............91 86 80 77 76 74  
RH..............54 65 79 87 89 93  
20 FT WIND DIR..SE SE SE SE S S  
20 FT WIND SPD..6 5 5 3 2 2  
20 FT WIND GUST.10 5 5 5  
MIX HGT (FT)....6000 6000 1500 1000 1500 1400  
TRANSP WIND DIR.S S S S S S  
TRANSP WIND SPD.5 5 5 3 2 2  
HAINES INDEX....5 5 4 3 3 3  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY (20-30 PERCENT). WIDESPREAD FOG EARLY IN  
THE MORNING.  
CWR.................0 PERCENT.  
TEMPERATURE.........MAX 96.  
RH..................MIN 43 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH IN THE  
AFTERNOON.  
MIXING HEIGHT.......1300-2500 FT AGL INCREASING TO 9200-9800 FT  
AGL.  
TRANSPORT WINDS.....SOUTHWEST 2 TO 10 MPH INCREASING TO 10 TO 13  
MPH EARLY IN THE AFTERNOON.  
HAINES INDEX........3 TO 4 OR VERY LOW POTENTIAL TO LOW POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR PCLDY  
WEATHER COV.....WIDSPD  
WEATHER TYPE....FOG NONE NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 0 0 0 0  
TEMP............72 76 86 93 96 96  
RH..............100 90 70 52 44 44  
20 FT WIND DIR..S S SW S S S  
20 FT WIND SPD..2 2 2 3 6 6  
20 FT WIND GUST.5 5  
MIX HGT (FT)....1300 1400 2500 7200 9800 9300  
TRANSP WIND DIR.SW SW W SW SW SW  
TRANSP WIND SPD.2 3 7 9 12 13  
HAINES INDEX....3 3 3 4 4 4  
 

 
FORECASTER...YORK  
REQUESTED BY...GREG CARLSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1713350.0/PAH  
.EMAIL GREG_CARLSON@NPS.GOV  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab KY Page
The Nexlab IL Page
The Nexlab IN Page
The Nexlab MO Page Main Text Page