599  
FNUS71 KPHI 211115  
FWSPHI  
 
SPOT FORECAST FOR SGL 43 LAUREL ROAD 4...PA GAME COMMISSION  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
615 AM EST TUE NOV 21 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 EST ON NOVEMBER 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
 
TODAY WILL BE DRY WITH SOUTH TO SOUTHWEST WINDS THAT MAY BECOME  
OCCASIONALLY GUSTY THIS AFTERNOON. RELATIVE HUMIDITIES WILL LOWER  
INTO THE 35 TO 40 PERCENT RANGE BY EARLY AFTERNOON. INCREASING  
CLOUDINESS WILL OCCUR TONIGHT AS LOW PRESSURE DEVELOPS TO OUR  
SOUTH AND A COLD FRONT APPROACHES THE AREA. THERE IS A SLIGHT  
CHANCE OF SHOWERS AFTER MIDNIGHT. ANY SHOWERS SHOULD QUICKLY END  
AROUND DAYBREAK WEDNESDAY. HOWEVER, A COLD FRONT WILL MOVE THROUGH  
THE AREA, WHICH WILL SWITCH WINDS TO NORTHWESTERLY.  
 

 
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (10-20 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 56.  
MIN HUMIDITY........35-40 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 15 MPH. GUSTS UP TO 25 MPH IN  
THE LATE MORNING AND EARLY AFTERNOON.  
MIXING HEIGHT.......1600-2700 FT AGL.  
 
TIME (EST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........3 10 15 17 27 28 29 26  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0  
TEMP............46 49 51 53 54 54 54 53  
RH..............52 45 42 39 38 40 40 43  
20 FT WIND DIR..SW SW S S S S S S  
20 FT WIND SPD..10 9 9 9 10 10 8 8  
20 FT WIND GUST.18 18 17 17 18 16 11 13  
MIX HGT (KFT)...1.6 1.8 2.0 2.1 2.4 2.7 2.6 1.9  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (35-65 PERCENT). A CHANCE OF  
SHOWERS AFTER MIDNIGHT.  
CHANCE OF PCPN......30 PERCENT.  
MIN TEMPERATURE.....AROUND 42.  
MAX HUMIDITY........75-85 PERCENT.  
WIND (20 FT)........WEST WINDS 6 TO 8 MPH.  
MIXING HEIGHT.......0-800 FT AGL.  
 
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........24 27 29 51 60 53  
WEATHER COV..... S CHC S CHC  
WEATHER TYPE....NONE NONE NONE NONE RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).0 0 10 10 20 20  
TEMP............51 49 49 49 47 46  
RH..............48 58 66 71 79 79  
20 FT WIND......S 8 S 8 S 8 SW 7 SW 6 W 6  
20 FT WIND GUST.14 14 13 10 10  
MIX HGT (FT)....800 BLW100 BLW100 BLW100 BLW100 BLW100  
   
WEDNESDAY
 
 
SKY/WEATHER.........BECOMING MOSTLY SUNNY (35-45 PERCENT). A SLIGHT CHANCE  
OF SHOWERS EARLY IN THE MORNING.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....AROUND 48.  
MIN HUMIDITY........45-50 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 15 MPH.  
MIXING HEIGHT.......0-1700 FT AGL, INCREASING TO 2600-4500 FT AGL  
IN THE LATE MORNING AND AFTERNOON.  
 
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........41 54 33 25 20 18  
WEATHER COV.....S CHC  
WEATHER TYPE....RNSHWR NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).20 10 10 0 0 0  
TEMP............45 43 45 47 46 44  
RH..............76 79 65 53 49 49  
20 FT WIND......W 7 NW 7 NW 10 NW 13 NW 13 NW 12  
20 FT WIND GUST.8 10 13 16 16 14  
MIX HGT (FT)....BLW100 700 2600 3900 4500 4300  
 

 
FORECASTER...SHAFER  
REQUESTED BY...JONATHAN WEAVER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1719042.0/PHI  
.EMAIL JONWEAVER@PA.GOV  
 
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