542  
FNUS71 KCTP 220842  
FWSCTP  
 
SPOT FORECAST FOR PENNCARBOSE EPA/EMA HAZMAT CLEAN-UP...SOMERSET COUNTY EMA  
NATIONAL WEATHER SERVICE STATE COLLEGE PA  
442 AM EDT SAT JUL 22 2017  
 
FORECAST IS BASED ON INCIDENT TIME OF 0400 EDT ON JULY 22.  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...  
CONTACT THE NATIONAL WEATHER SERVICE IN STATE COLLEGE.  
   
DISCUSSION
 
 
A CLUSTER OF HEAVY SHOWERS AND THUNDERSTORMS IS LIKELY TO PASS  
OVER THE AREA BETWEEN NOON AND 2 PM. SCATTERED ADDITIONAL  
THUNDERSTORMS ARE POSSIBLE THIS EVENING. AFTER A LULL LATE TONIGHT,  
ANOTHER ROUND OF HEAVY SHOWERS AND THUNDERSTORMS IS POSSIBLE  
SUNDAY AFTERNOON.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). A SLIGHT CHANCE  
OF SHOWERS AND THUNDERSTORMS LATE IN THE  
MORNING...THEN THUNDERSTORMS AND  
SHOWERS LIKELY IN THE AFTERNOON.  
CHANCE OF PCPN......70 PERCENT.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........76 PERCENT.  
SURFACE WINDS.......LIGHT AND VARIABLE WINDS...BECOMING SOUTHWEST 5  
TO 9 MPH IN THE LATE MORNING AND AFTERNOON.  
MIXING HEIGHT.......1000-2000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 7 TO 15 MPH...INCREASING TO WEST 21  
TO 24 MPH LATE.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........91 91 91 89 84 82 84 88 90 90 90 89  
WEATHER COV..... SCH SCH CHC LKY LKY LKY LKY LKY LKY  
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW  
TSTM COV........ SCH SCH CHC LKY LKY LKY LKY LKY LKY  
CHC OF PCPN (%).10 10 10 20 20 40 60 70 70 70 70 60  
TEMP............68 69 70 72 74 76 76 77 77 77 77 77  
RH..............97 93 93 87 84 79 79 76 76 76 76 76  
SURFACE WND DIR.SW SW SW SW SW SW SW SW SW SW SW SW  
SURFACE WND SPD.3 4 4 5 5 6 6 6 7 8 9 9  
SURFACE WND GST.5 5 5 5 5 10 10 15 15 15 15 15  
MIX HGT (KFT)...1.0 1.0 1.1 1.4 1.6 1.9 2.0 2.0 2.0 2.0 2.0 1.9  
TRANSP WIND DIR.W W W W SW S SW SW SW SW W W  
TRANSP WIND SPD.8 7 7 7 7 7 7 8 10 15 21 24  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). THUNDERSTORMS  
LIKELY IN THE EVENING. SHOWERS LIKELY. A CHANCE  
OF THUNDERSTORMS AFTER MIDNIGHT.  
CHANCE OF PCPN......60 PERCENT.  
MIN TEMPERATURE.....AROUND 67.  
MAX HUMIDITY........100 PERCENT.  
SURFACE WINDS.......WEST WINDS 7 TO 9 MPH.  
MIXING HEIGHT.......600-1700 FT AGL.  
TRANSPORT WINDS.....WEST 14 TO 22 MPH.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........87 83 80 83 88 90 89 88 87 88 89 89  
WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY CHC CHC CHC CHC  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........LKY LKY LKY LKY LKY CHC CHC CHC SCH SCH SCH CHC  
CHC OF PCPN (%).60 60 60 60 60 60 60 60 50 50 50 40  
TEMP............76 75 75 74 73 73 72 71 70 69 69 68  
RH..............79 82 82 84 84 84 87 87 90 93 97 100  
SURFACE WND DIR.SW SW SW SW SW W W W W W W W  
SURFACE WND SPD.9 8 8 8 8 8 8 7 7 7 7 7  
SURFACE WND GST.15 15 10 15 15 15 15 15 15 15 15 15  
MIX HGT (KFT)...1.7 1.4 1.2 1.0 0.9 0.8 0.8 0.9 0.9 0.8 0.7 0.6  
TRANSP WIND DIR.W W W W W W W W W W W W  
TRANSP WIND SPD.22 17 14 14 14 15 15 16 16 16 16 16  
   
SUNDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). A CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE MORNING  
...THEN THUNDERSTORMS AND SHOWERS  
LIKELY IN THE AFTERNOON.  
CHANCE OF PCPN......70 PERCENT.  
MAX TEMPERATURE.....AROUND 79.  
MIN HUMIDITY........72 PERCENT.  
SURFACE WINDS.......WEST WINDS 7 TO 9 MPH.  
MIXING HEIGHT.......700-2600 FT AGL...INCREASING TO 3300-3600 FT  
AGL LATE.  
TRANSPORT WINDS.....WEST 12 TO 20 MPH...DECREASING TO 9 TO 10 MPH  
LATE.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........89 88 88 87 85 84 84 84 84 84 84 84  
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC LKY LKY LKY LKY  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC CHC CHC CHC CHC LKY LKY LKY LKY  
CHC OF PCPN (%).40 40 40 40 40 40 40 40 70 70 70 70  
TEMP............67 68 69 70 71 73 74 76 78 78 79 78  
RH..............100 100 97 97 93 90 87 82 76 76 72 74  
SURFACE WND DIR.W W W W W W W W W W W W  
SURFACE WND SPD.7 8 8 8 9 9 9 9 9 9 9 9  
SURFACE WND GST.15 15 10 15 15 15 15 15 15 15 15 15  
MIX HGT (KFT)...0.7 0.7 0.9 1.1 1.3 1.6 1.7 1.8 2.0 2.6 3.3 3.6  
TRANSP WIND DIR.W W W W W W W W W W W W  
TRANSP WIND SPD.17 17 18 18 20 18 17 15 13 12 10 9  
 

 
FORECASTER...FITZGERALD  
REQUESTED BY...JOEL LANDIS  
TYPE OF REQUEST...HAZMAT  
.TAG 1713147.0/CTP  
.EMAIL LANDISJ@CO.SOMERSET.PA.US  
 
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