446  
FOCA52 TJSJ 221918  
PFMSJU  
 
POINT FORECAST MATRICES  
NATIONAL WEATHER SERVICE SAN JUAN PR  
318 PM AST MON JUL 22 2019  
 
PRZ001-230830-  
LUIS MUNOZ MARIN INTERNATIONAL AIRPORT-SAN JUAN  
18.43N 66.00W ELEV. 9 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 78 90 78 90 78  
TEMP 87 82 80 78 80 85 89 90 87 82 80 78 80 85 89 90 87 82 80 78 80 85  
DEWPT 73 74 74 74 73 75 74 75 74 75 74 73 73 74 73 74 74 75 74 74 73 74  
RH 63 77 82 88 79 72 61 62 65 79 82 85 79 70 59 60 65 79 82 88 79 70  
WIND DIR E E E E SE E E E E E E E E E E E E E E E E E  
WIND SPD 14 12 11 11 9 13 17 18 17 11 12 10 11 13 17 16 14 12 13 13 12 17  
CLOUDS B1 SC SC B1 B1 B1 B1 SC SC SC SC SC SC SC SC FW FW FW FW B1 B1 SC  
POP 12HR 60 60 30 20 60  
QPF 12HR 0.18 0.36 0.03 0.02 0.09  
RAIN SHWRS C C C C C L L C C C C C C S S S S S S L L C  
TSTMS S S S  
HEAT INDEX 94 88 84 84 94 98101 95 89 84 84 93 97 99 95 89 84 84 93  
MAX HEAT 98 86 94 101 101 87 93 99 99 86 93  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 90 78 90 79 90 79 89 79 89  
TEMP 90 82 78 85 90 83 79 86 90 83 79 85 89 82 79 85 89 82  
DEWPT 74 75 75 75 76 76 76 75 76 76 75 74 75 75 74 74 74 75  
PWIND DIR E E E E E E E E E  
WIND CHAR BZ BZ BZ GN GN GN GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC FW FW SC SC FW SC SC SC SC SC  
POP 12HR 40 40 30 20 20 20 40 40 20  
RAIN SHWRS C C C C C C S S S S S S S C C C S S  
TSTMS S S S S  
 

 
 
PRZ002-230830-  
ROOSEVELT ROADS NAVAL AIRSTATION-CEIBA PR  
18.25N 65.63W ELEV. 39 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 79 92 81 91 79  
TEMP 87 82 81 79 81 87 91 92 89 85 83 81 82 87 90 91 88 83 81 79 80 86  
DEWPT 74 74 74 74 73 75 75 75 75 74 74 73 73 74 73 74 75 74 74 73 74 74  
RH 65 77 79 85 77 68 60 58 64 70 74 77 74 65 58 58 66 74 79 82 82 68  
WIND DIR E E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 13 13 14 14 13 17 17 17 14 13 14 13 13 14 16 14 14 14 16 16 16 17  
CLOUDS SC B1 B1 OV OV B2 B2 SC SC SC SC SC SC SC SC FW FW FW FW B2 B2 SC  
POP 12HR 80 80 50 20 70  
QPF 12HR 0.37 0.26 0.07 0.03 0.13  
RAIN SHWRS S C C D D D D C C C C C C S S S S S S L L C  
TSTMS S S  
HEAT INDEX 95 88 86 86 96102103 99 93 90 86 87 95 98101 98 90 86 84 94  
MAX HEAT 97 88 96 103 103 91 95 101 101 88 94  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 90 79 89 80 89 80 88 80 89  
TEMP 90 83 79 85 89 83 80 85 89 83 80 85 88 83 80 85 89 83  
DEWPT 74 75 75 75 76 76 75 75 76 75 74 75 75 75 74 74 74 75  
PWIND DIR E E E E NE NE E E E  
WIND CHAR BZ BZ 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 SC SC  
POP 12HR 50 50 30 20 20 20 50 50 30  
RAIN SHWRS C C C C C C S S S S S S S C C C C S  
TSTMS S S S S  
 

 
 
PRZ007-230830-  
MERCEDITA AIRPORT-PONCE PR  
18.02N 66.56W ELEV. 26 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 71 94 75 91 75  
TEMP 85 77 74 72 74 85 92 94 89 81 78 76 77 85 90 91 87 80 78 76 77 83  
DEWPT 76 73 73 72 71 75 78 78 78 75 74 72 71 75 77 76 77 74 73 72 71 75  
RH 75 87 97100 90 72 64 60 70 82 88 87 82 72 66 62 72 82 85 87 82 77  
WIND DIR SE E NE NE NE E E SE SE E NE NE NE E E SE E E NE NE NE E  
WIND SPD 14 9 9 9 9 13 17 17 17 9 10 9 10 13 16 18 16 10 9 10 10 14  
CLOUDS FW FW FW SC SC SC SC B1 B1 FW FW SC SC FW FW FW FW FW FW SC SC SC  
POP 12HR 30 50 20 20 30  
QPF 12HR 0.04 0.61 0 0.02 0.04  
RAIN SHWRS S S S S S C C C C S S S S S S S S S S C  
HEAT INDEX 94 94107110103 87 94103103 99 84 90  
MAX HEAT 100 94 110 109 84 94 105 103 90  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 89 75 90 76 90 76 89 76 89  
TEMP 89 80 76 84 90 81 77 84 90 81 77 84 89 80 77 84 89 80  
DEWPT 77 75 73 76 78 75 74 76 78 75 73 75 77 75 72 75 77 75  
PWIND DIR E E E NE E NE E NE E  
WIND CHAR BZ GN BZ LT GN LT GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC FW FW FW SC FW FW SC SC  
POP 12HR 50 20 30 20 40 10 20 20 40  
RAIN SHWRS C C S S C C S S C C S S S S S S C C  
TSTMS S S S S S S S S  
 

 
 
PRZ008-230830-  
RAFAEL HERNANDEZ AIRPORT-AGUADILLA PR  
18.50N 67.13W ELEV. 237 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 79 88 77 86 77  
TEMP 85 82 80 79 80 84 87 88 85 81 79 77 78 82 85 86 84 80 79 77 78 82  
DEWPT 73 74 74 73 72 74 76 76 76 75 75 73 72 75 76 75 75 75 74 74 73 75  
RH 67 77 82 82 77 72 70 68 75 82 88 87 82 79 75 70 74 85 85 90 85 79  
WIND DIR NE E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 13 13 13 13 12 13 13 13 14 17 13 12 14 16 17 20 20 17 12 14 13 18  
CLOUDS OV SC SC FW FW SC SC B2 B2 FW FW FW FW FW FW FW FW FW FW FW FW FW  
POP 12HR 20 70 10 20 10  
QPF 12HR 0 0.81 0 0.05 0.02  
RAIN SHWRS D S S S S L L S S S S S S S S S  
TSTMS C S S  
HEAT INDEX 92 88 84 84 91 98 99 94 87 89 94 95 92 85 89  
MAX HEAT 95 86 91 99 99 85 89 96 95 85 89  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 86 77 87 78 87 78 87 78 86  
TEMP 86 80 77 83 87 81 78 83 87 81 78 83 87 81 78 83 86 81  
DEWPT 76 75 74 75 77 76 75 76 77 76 75 75 76 75 74 74 75 75  
PWIND DIR E E E E NE E E E E  
WIND CHAR BZ BZ BZ GN BZ GN GN GN GN  
AVG CLOUDS SC SC FW FW SC SC SC SC FW SC FW FW SC SC FW FW SC SC  
POP 12HR 60 10 50 20 20 10 30 10 50  
RAIN SHWRS L L S S C C S S S S S S C C S S C C  
TSTMS S S S S S S S S  
 

 
 
PRZ010-230830-  
EUGENIO MARIA DE HOSTO AIRPORT-MAYAGUEZ PR  
18.27N 67.15W ELEV. 28 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 73 93 75 92 75  
TEMP 87 79 76 74 76 85 91 93 89 81 78 76 77 85 91 92 88 81 78 76 77 85  
DEWPT 74 74 75 73 72 75 76 77 76 76 76 73 72 75 76 77 76 75 76 74 72 76  
RH 65 85 97 97 87 72 62 60 66 85 94 90 85 72 62 62 68 82 94 94 85 75  
WIND DIR N NE NE NE NE E SE SE SE NE NE E E E E SW SW NE NE NE NE NE  
WIND SPD 6 4 6 6 6 8 11 9 10 5 8 9 11 12 9 4 4 12 9 8 10 14  
CLOUDS OV FW FW SC SC SC SC B2 B2 FW FW FW FW FW FW SC SC FW FW FW FW FW  
POP 12HR 20 70 10 50 10  
QPF 12HR 0 1.01 0 0.13 0.02  
RAIN SHWRS D S S S S L L S S S S C C S  
TSTMS C S S S S  
HEAT INDEX 95 94103107100 87 94103106 99 87 94  
MAX HEAT 102 94 107 106 86 94 106 103 85 94  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 91 75 91 76 91 76 92 76 91  
TEMP 91 80 76 85 91 81 77 85 91 81 77 86 92 81 77 85 91 81  
DEWPT 76 75 74 76 77 77 75 76 78 76 75 76 77 75 74 75 77 75  
PWIND DIR E E N E E NE SE E N  
WIND CHAR GN GN GN GN GN GN GN LT LT  
AVG CLOUDS SC SC FW FW SC B1 FW FW SC SC FW FW SC SC FW FW SC B1  
POP 12HR 60 10 60 10 50 10 50 10 60  
RAIN SHWRS L L S S L L S S C C S S C C S S L L  
TSTMS S S S S S S S S S S  
 

 
 
VIZ001-230830-  
CYRIL E. KING AIRPORT-ST THOMAS USVI  
18.33N 64.97W ELEV. 23 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 81 92 79 91 79  
TEMP 88 84 83 81 82 88 91 92 89 83 81 80 81 86 90 91 88 83 81 79 81 86  
DEWPT 74 75 75 75 76 76 75 75 75 75 75 75 75 75 74 75 75 75 76 76 75 76  
RH 63 74 77 82 82 68 60 58 64 77 82 85 82 70 60 60 66 77 85 91 82 72  
WIND DIR E E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 14 16 18 18 19 19 19 19 17 18 18 17 17 19 18 17 18 18 19 20 19 20  
CLOUDS SC SC SC B1 B1 SC SC FW FW SC SC SC SC FW FW FW FW SC SC B1 B1 SC  
POP 12HR 60 30 30 20 40  
QPF 12HR 0.20 0.05 0.03 0.01 0.07  
RAIN SHWRS S C C L L C C S S C C C C S S S S S S C C C  
HEAT INDEX 97 92 90 87 89 99102103 99 90 87 85 87 95 99102 98 90 87 87 96  
MAX HEAT 99 92 99 103 102 90 95 102 102 89 96  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 91 80 89 80 89 80 89 80 90  
TEMP 91 84 80 85 89 83 80 85 89 83 80 85 89 83 80 86 90 83  
DEWPT 76 75 76 76 76 77 76 76 76 76 75 76 75 75 76 75 75 75  
PWIND DIR E E E E NE E E E E  
WIND CHAR BZ BZ BZ BZ BZ GN GN GN BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC FW  
POP 12HR 30 30 30 20 20 20 40 40 20  
RAIN SHWRS C C C C C C S S S S S S S C C C S S  
TSTMS S S S S  
 

 
 
VIZ002-230830-  
HENRY E. ROHLSEN AIRPORT-ST CROIX USVI  
17.70N 64.80W ELEV. 74 FT  
318 PM AST MON JUL 22 2019  
 
DATE 07/22/19 TUE 07/23/19 WED 07/24/19 THU  
AST 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08  
UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12  
 
MIN/MAX 79 90 78 91 78  
TEMP 87 83 81 79 80 86 89 90 87 82 80 78 80 86 90 91 88 82 80 79 80 85  
DEWPT 73 74 75 75 75 76 75 74 74 75 75 74 74 74 74 74 74 75 74 74 74 74  
RH 63 74 82 88 85 72 64 60 65 79 85 88 82 68 60 58 63 79 82 85 82 70  
WIND DIR E E E E E E E E E E E E E E E E E NE E E E E  
WIND SPD 14 14 17 18 18 19 19 17 16 17 17 16 17 18 18 18 18 18 19 19 19 20  
CLOUDS FW B1 B1 SC SC SC SC FW FW SC SC SC SC FW FW SC SC SC SC SC SC SC  
POP 12HR 40 30 30 20 30  
QPF 12HR 0.14 0.06 0.03 0.01 0.06  
RAIN SHWRS S C C C C C C S S C C C C S S S S S S C C C  
HEAT INDEX 94 90 87 85 96 99 99 95 89 85 84 94 99101 97 89 84 84 93  
MAX HEAT 98 88 96 99 99 87 94 101 99 89 93  
 
DATE 07/25 FRI 07/26/19 SAT 07/27/19 SUN 07/28/19 MON 07/29/19  
AST 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20  
UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00  
 
MAX/MIN 90 79 90 78 90 78 90 78 90  
TEMP 90 83 79 86 90 82 78 85 90 82 78 85 90 82 78 85 90 82  
DEWPT 74 75 75 75 75 76 76 75 74 76 75 75 73 74 75 75 74 75  
PWIND DIR E E E E E NE E E E  
WIND CHAR BZ BZ BZ BZ BZ GN GN BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW  
POP 12HR 30 30 20 20 20 20 30 40 40  
RAIN SHWRS C C C C S S S S S S S S S C C C C S  
 

 
 
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