141  
FOCA52 TJSJ 201414  
PFMSJU  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE SAN JUAN PR  
1014 AM AST FRI JUL 20 2018  
 
PRZ001-202030-  
LUIS MUNOZ MARIN INTERNATIONAL AIRPORT-SAN JUAN  
18.43N 66.00W ELEV. 9 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 89 78 89 78 88  
TEMP 84 84 83 80 79 79 80 81 84 85 83 80 79 79 78 80 83 84 83 79  
DEWPT 73 73 73 73 73 72 71 72 71 71 71 72 72 72 71 72 72 72 72 72  
RH 70 70 72 79 82 79 74 74 65 63 67 77 79 79 79 77 70 67 70 79  
WIND DIR E E E E E SE E E E E E E E E SE E E E E E  
WIND SPD 18 18 17 11 11 11 10 12 14 16 14 11 11 11 9 12 14 17 16 11  
CLOUDS SC CL CL FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC SC  
POP 12HR 20 10 10 20 20  
QPF 12HR 0.01 0.02 0.02 0.03 0.06  
RAIN SHWRS S S S S S S S S S S S S S S S S S S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 90 90 89 84 83 85 89 90 88 84 84 88 90 88  
MAX HEAT 90 90 84 85 90 89 84 84 90 90  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 77 87 77 89 78 89 79 89  
TEMP 78 80 83 79 78 81 85 79 79 80 85 80 79 81 85 80  
DEWPT 71 72 71 72 71 72 71 72 71 72 71 72 72 73 73 74  
PWIND DIR E E E E SE E E E  
WIND CHAR GN BZ GN GN GN GN GN GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 40 40 40 40 40 20 40  
RAIN SHWRS S S C C C C C S S C C C S S C C  
 

 
 
PRZ002-202030-  
ROOSEVELT ROADS NAVAL AIRSTATION-CEIBA PR  
18.25N 65.63W ELEV. 39 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 89 78 89 77 88  
TEMP 83 83 82 79 79 79 80 80 83 84 82 79 79 78 78 80 82 83 81 79  
DEWPT 73 73 73 73 73 72 71 72 72 71 72 72 72 72 72 73 73 72 73 73  
RH 72 72 74 82 82 79 74 77 70 65 72 79 79 82 82 79 74 70 77 82  
WIND DIR E E E E E E E E E E E E E E E E E E E E  
WIND SPD 17 17 16 13 13 13 13 13 13 13 12 12 12 12 12 13 14 14 13 12  
CLOUDS SC CL CL FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC SC  
POP 12HR 20 10 10 20 40  
QPF 12HR 0.01 0.02 0.02 0.03 0.25  
RAIN SHWRS S S S S S S S S S S S S S S S C C S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 89 89 87 83 84 88 89 87 84 87 88 86  
MAX HEAT 89 89 84 89 88 84 88 87  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 77 87 78 89 78 88 78 88  
TEMP 78 79 82 78 78 80 83 79 79 78 83 79 78 80 84 79  
DEWPT 72 72 72 72 72 72 72 72 72 72 72 72 73 74 74 74  
PWIND DIR E E E E E SE E E  
WIND CHAR GN BZ GN GN GN GN GN GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 40 40 40 40 40 20 40  
RAIN SHWRS S S C C C C C C C C C C S S C C  
 

 
 
PRZ007-202030-  
MERCEDITA AIRPORT-PONCE PR  
18.02N 66.56W ELEV. 26 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 91 73 92 74 91  
TEMP 87 89 86 77 75 75 74 82 89 92 87 77 74 74 74 81 88 87 84 76  
DEWPT 70 70 70 71 71 70 70 69 68 68 69 70 70 70 69 69 68 70 69 70  
RH 57 54 59 82 87 84 87 65 50 46 55 79 87 87 84 67 52 57 61 82  
WIND DIR SE SE SE E NE NE NE E SE SE SE E NE NE NE E SE SE SE E  
WIND SPD 18 18 16 10 10 10 9 12 16 18 17 12 8 8 9 12 16 17 14 9  
CLOUDS FW CL CL CL CL CL CL CL CL SC SC CL CL CL CL SC SC SC SC FW  
POP 12HR 10 5 20 20 20  
QPF 12HR 0 0 0.02 0.01 0.05  
RAIN SHWRS S S S S S S S S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 92 94 91 85 93 96 91 84 92 92 88  
MAX HEAT 94 93 85 96 94 84 92 91  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 74 89 74 91 75 92 76 91  
TEMP 74 79 85 76 74 81 87 76 75 81 87 76 76 81 90 76  
DEWPT 70 70 68 69 69 70 68 70 69 70 67 69 70 70 68 71  
PWIND DIR NE SE E E E SE E E  
WIND CHAR GN BZ GN GN LT GN LT GN  
AVG CLOUDS FW FW FW FW FW FW SC FW FW FW SC SC FW FW FW SC  
POP 12HR 10 10 20 20 20 40 10 20  
RAIN SHWRS S S S S S S S S S S C C S S S S  
 

 
 
PRZ008-202030-  
RAFAEL HERNANDEZ AIRPORT-AGUADILLA PR  
18.50N 67.13W ELEV. 237 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 87 78 87 77 86  
TEMP 85 86 85 82 80 78 78 80 85 85 84 81 79 78 78 80 84 83 83 81  
DEWPT 74 75 75 74 73 72 72 71 72 73 73 73 72 71 71 71 72 73 72 73  
RH 70 70 72 77 79 82 82 74 65 67 70 77 79 79 79 74 67 72 70 77  
WIND DIR E E E E E E E E E NE E E E E E E E E S S  
WIND SPD 16 18 18 17 16 13 12 13 16 18 17 14 13 11 11 12 16 14 11 4  
CLOUDS FW SC SC CL CL CL CL CL CL SC SC CL CL CL CL SC SC SC SC FW  
POP 12HR 20 5 20 20 40  
QPF 12HR 0.02 0 0.02 0.01 0.24  
RAIN SHWRS S S S S S S S C C S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 94 96 94 87 84 90 94 96 94 85 87 92 94 93 85  
MAX HEAT 96 96 87 90 96 96 85 87 94 95  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 77 87 79 88 78 87 78 87  
TEMP 78 79 84 81 79 79 83 81 78 79 84 81 78 79 85 80  
DEWPT 72 71 72 72 71 71 71 73 71 70 71 71 71 72 71 74  
PWIND DIR E E E E E E E E  
WIND CHAR GN GN GN GN GN GN GN GN  
AVG CLOUDS FW FW SC SC FW FW SC FW FW FW SC SC FW FW SC SC  
POP 12HR 10 40 20 20 10 40 10 40  
RAIN SHWRS S S C C S S S S S S C C S S C C  
TSTMS S S S S  
 

 
 
PRZ010-202030-  
EUGENIO MARIA DE HOSTO AIRPORT-MAYAGUEZ PR  
18.27N 67.15W ELEV. 28 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 89 75 90 74 90  
TEMP 86 88 87 80 78 76 76 80 87 87 85 80 77 76 76 80 86 84 83 78  
DEWPT 73 74 74 73 72 71 71 71 73 71 72 72 71 70 70 70 71 71 72 71  
RH 65 63 65 79 82 85 85 74 63 59 65 77 82 82 82 72 61 65 70 79  
WIND DIR SE SE SE SW E E E E N W SE NW E E E E NE SW W NE  
WIND SPD 14 10 9 5 8 9 8 10 6 6 4 3 8 9 8 9 6 5 6 6  
CLOUDS CL SC SC CL CL CL CL CL CL SC SC CL CL CL CL CL CL SC SC FW  
POP 12HR 20 5 40 5 40  
QPF 12HR 0.02 0 0.16 0 0.22  
RAIN SHWRS S S C C C C S  
TSTMS S S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 93 97 95 84 83 94 93 91 84 83 91 89 88  
MAX HEAT 97 97 83 94 92 83 91 89  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 75 87 75 88 76 90 77 87  
TEMP 76 78 85 79 75 79 84 79 76 80 85 78 77 79 87 79  
DEWPT 71 70 70 70 70 70 71 71 70 70 70 69 69 71 70 72  
PWIND DIR E SE E SE E SE E SE  
WIND CHAR GN GN LT LT GN GN LT LT  
AVG CLOUDS FW FW SC SC FW FW FW FW FW FW SC SC FW FW SC SC  
POP 12HR 10 40 10 10 10 40 10 40  
RAIN SHWRS S S C C S S S S S S C C S S C C  
TSTMS S S S S  
 

 
 
VIZ001-202030-  
CYRIL E. KING AIRPORT-ST THOMAS USVI  
18.33N 64.97W ELEV. 23 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 90 79 89 78 89  
TEMP 82 82 81 81 81 81 81 81 81 81 81 80 80 80 80 80 80 80 80 80  
DEWPT 73 73 73 73 73 71 72 71 71 72 72 72 72 72 73 73 72 72 72 72  
RH 74 74 77 77 77 72 74 72 72 74 74 77 77 77 79 79 77 77 77 77  
WIND DIR E E E E E E E E E E E E E E E E E SE E E  
WIND SPD 19 18 17 16 17 18 17 16 14 14 14 14 16 16 16 16 17 16 16 16  
CLOUDS SC CL CL CL CL FW FW FW FW FW FW FW FW FW FW FW FW FW FW SC  
POP 12HR 20 10 10 10 20  
QPF 12HR 0.01 0.01 0.02 0.02 0.02  
RAIN SHWRS S S S S S S S S S S S S S S S S  
OBVIS H H  
HEAT INDEX 87 87 86 86 86 85 85 85 85 85 85 84 84 84 84 84 84 84 84 84  
MAX HEAT 87 87 86 85 85 85 84 84 84 84  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 77 88 78 89 79 88 79 89  
TEMP 80 80 80 80 80 80 80 80 80 81 81 81 80 80 81 80  
DEWPT 72 72 71 72 72 72 72 72 73 72 72 73 73 73 74 74  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 20 20 20 20 20 20 20  
RAIN SHWRS S S S S S S S S S S S S S S S S  
 

 
 
VIZ002-202030-  
HENRY E. ROHLSEN AIRPORT-ST CROIX USVI  
17.70N 64.80W ELEV. 74 FT  
1014 AM AST FRI JUL 20 2018  
 
DATE FRI 07/20/18 SAT 07/21/18 SUN 07/22/18  
AST 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20  
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  
 
MAX/MIN 89 78 89 76 89  
TEMP 82 82 82 82 82 82 82 82 82 82 81 81 81 81 81 81 81 81 81 81  
DEWPT 74 74 74 74 74 72 73 73 73 73 73 73 73 73 73 73 73 73 73 73  
RH 77 77 77 77 77 72 74 74 74 74 77 77 77 77 77 77 77 77 77 77  
WIND DIR E E E E E E E E E E E E E E NE E E E E E  
WIND SPD 20 18 16 16 17 17 17 17 16 14 16 14 14 14 14 16 16 16 16 14  
CLOUDS SC CL CL CL CL FW FW FW FW FW FW CL CL FW FW FW FW FW FW SC  
POP 12HR 20 10 10 10 20  
QPF 12HR 0.01 0.01 0.02 0.01 0.02  
RAIN SHWRS S S S S S S S S S S S S S S  
OBVIS H H H H H H H H H H H H H H H  
HEAT INDEX 88 88 88 88 88 87 87 87 87 87 86 86 86 86 86 86 86 86 86 86  
MAX HEAT 88 88 88 87 87 87 86 86 86 86  
 
DATE MON 07/23/18 TUE 07/24/18 WED 07/25/18 THU 07/26/18  
AST 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MIN/MAX 77 89 76 91 77 90 78 89  
TEMP 81 81 81 81 81 81 81 81 81 81 82 81 81 81 82 81  
DEWPT 73 73 73 73 73 73 73 73 73 73 72 74 75 74 74 75  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ GN  
AVG CLOUDS SC SC SC FW SC SC FW FW FW FW SC SC FW FW FW SC  
POP 12HR 20 20 20 10 20 20 10 20  
RAIN SHWRS S S S S S S S S S S S S S S S S  
 

 
 
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