102  
FNCA72 TJSJ 260734  
FWSSJU  
 
SPOT FORECAST FOR HURRICANE MARIA SUPPORT...USFS  
NATIONAL WEATHER SERVICE SAN JUAN PR  
334 AM AST SUN NOV 26 2017  
 
FORECAST IS BASED ON INCIDENT TIME OF 0600 AST ON NOVEMBER 26.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
QUESTIONS OR CONCERNS ABOUT THIS FORECAST, CONTACT (787) 253-4501.  
   
DISCUSSION
 
SHOWERS WERE SEEN IN THE WEST ON SATURDAY. SOME  
SHOWERS ENTERED EASTERN PUERTO RICO THIS MORNING. UNDER THE  
CONTINUED INFLUENCE OF AN UPPER LEVEL RIDGE, SOME SHOWERS ARE  
EXPECTED TODAY IN THE EARLY MORNING FOLLOWED BY CLEARING.  
RELATIVE HUMIDITIES WILL REMAIN ABOVE CRITICAL LEVELS WITH WINDS  
GENERALLY LESS THAN 15 MPH. DRIER WEATHER WILL FOLLOW THE SHOWERS  
TODAY AND MONDAY. ANOTHER AREA OF MOISTURE WILL CROSS SAINT CROIX  
AND VIEQUES AND MOVE INTO EASTERN PUERTO RICO. FIRE DANGER IS  
CONSIDERED TO BE LOW.  
 
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). ISOLATED SHOWERS.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 84.  
MIN HUMIDITY........65 PERCENT.  
HEAT INDEX..........90.  
SURFACE WINDS.......EAST WINDS 7 TO 9 MPH.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 7 TO 9 MPH.  
 
TIME (AST) 6 AM 9 AM NOON 3 PM  
SKY (%).........30 30 30 30  
WEATHER COV.....ISOLTD ISOLTD ISOLTD ISOLTD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).20 20 20 20  
LAL.............1 1 1 1  
TEMP............74 80 84 83  
RH..............93 77 65 67  
HEAT INDEX (F)..74 85 90 88  
20 FT WIND......E 6G10 E 6G10 E 6G10 E 6G10  
SURFACE WIND....E 7G10 E 7G10 E 8G10 E 7G10  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). ISOLATED  
SHOWERS.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 74.  
MAX HUMIDITY........93 PERCENT.  
HEAT INDEX..........71.  
SURFACE WINDS.......EAST WINDS 6 TO 9 MPH.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 6 TO 9 MPH.  
 
TIME (AST) 6 PM 9 PM MIDNGT 3 AM  
SKY (%).........30 30 30 30  
WEATHER COV.....ISOLTD ISOLTD ISOLTD ISOLTD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).20 20 20 20  
LAL.............1 1 1 1  
TEMP............78 77 75 75  
RH..............79 82 84 87  
HEAT INDEX (F)..77 75 73 72  
20 FT WIND......E 5G10 E 5G10 E 6G10 E 6G10  
SURFACE WIND....E 6G10 E 6G10 E 7G10 E 8G10  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). SCATTERED SHOWERS  
IN THE MORNING.  
CHANCE OF PCPN......30 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 83.  
MIN HUMIDITY........59 PERCENT.  
HEAT INDEX..........88.  
SURFACE WINDS.......EAST WINDS 7 TO 9 MPH.  
WIND (20 FT)........  
SLOPE/VALLEY.......EAST WINDS 7 TO 9 MPH.  
 
TIME (AST) 6 AM 9 AM NOON 3 PM  
SKY (%).........63 63 73 73  
WEATHER COV.....SCTTRD SCTTRD ISOLTD ISOLTD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).30 30 10 10  
LAL.............1 1 1 1  
TEMP............75 80 83 82  
RH..............90 69 59 65  
HEAT INDEX (F)..72 79 87 86  
20 FT WIND......E 5G10 E 6G10 E 7G15 E 6G10  
SURFACE WIND....E 6G10 E 7G10 E 9G15 E 8G10  
 

 
FORECASTER...SNELL  
REQUESTED BY...MICHAEL J WILLIAMS  
TYPE OF REQUEST...OTHER  
.TAG 1718980.6/SJU  
.EMAIL EL.YUNQUE.PLANS@GMAIL.COM  
 
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