019  
FOCA52 TJSJ 192012  
AFMSJU  
 
AREA FORECAST MATRICES  
NATIONAL WEATHER SERVICE SAN JUAN PR  
412 PM AST WED SEP 19 2018  
 
PRZ001-200815-  
SAN JUAN AND VICINITY-  
INCLUDING THE CITIES OF BAYAMON, CAROLINA, CATANO, GUAYNABO,  
SAN JUAN, TOA ALTA, TOA BAJA, AND TRUJILLO ALTO  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 76 80 84 90 92 72 76 81 84 92 94 71 76 80  
TEMP 84 81 78 77 76 84 89 90 84 80 78 77 77 85 91 92 85 81 78 77 76 85  
DEWPT 75 75 75 74 74 74 74 74 75 74 74 73 73 73 72 72 73 73 72 72 72 72  
RH 74 82 91 90 94 72 61 60 74 82 88 87 87 67 54 52 67 77 82 85 87 65  
WIND DIR E E E SE SE E SE SE SE E SE SE SE E E E E E E E E E  
WIND SPD 16 9 9 4 4 11 14 14 13 8 5 5 5 10 13 14 12 5 5 5 5 6  
WIND GUST 26 26 26  
CLOUDS SC SC SC SC SC SC SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC  
POP 12HR 40 30 5 50 50  
QPF 12HR 0.01 0.01 0 0.00-0.12 0.04  
RAIN SHWRS SC SC SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 92 85 80 91 98 99 91 84 80 92 98100 92 85 80 90  
MAX HEAT 100 91 95 103 102 90 96 103 102 89 94  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 92 77 91 76 91  
TEMP 91 80 76 84 91 80 77 85 92 81 78 85 91 81 77 85 91 81  
DEWPT 70 73 73 73 73 72 72 73 73 74 73 73 74 74 73 73 74 73  
PWIND DIR E E E SE E E E E E  
WIND CHAR GN LT LT LT GN LT 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 20 30 30 40 40 40 40 40 40  
RAIN SHWRS IS IS SC SC SC IS IS IS IS IS IS SC SC IS SC SC SC SC  
 

 
 
PRZ002-200815-  
NORTHEAST-  
INCLUDING THE CITIES OF CEIBA, CANOVANAS, FAJARDO, HUMACAO,  
LOIZA, LUQUILLO, NAGUABO, AND RIO GRANDE  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 64 77 81 76 87 91 67 77 82 75 88 92 65 76 81  
TEMP 83 80 79 78 77 83 86 87 83 80 79 78 77 83 87 88 83 79 78 77 76 82  
DEWPT 75 75 75 74 73 74 75 75 74 74 74 73 73 73 73 74 74 73 72 73 72 72  
RH 77 85 88 88 87 74 70 68 74 82 85 85 87 72 63 63 74 82 82 87 87 72  
WIND DIR E E E E E E SE SE E E E E E E E E E NE E E E E  
WIND SPD 14 10 12 10 9 14 16 16 13 9 9 9 8 12 13 12 11 9 8 8 6 8  
WIND GUST 23 20 26 28  
CLOUDS SC B1 B1 B1 B1 B1 B1 FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 40 40 20 60 60  
QPF 12HR 0.00-0.08 0.02 0.02 0.00-0.06 0.04  
RAIN SHWRS IS SC SC SC SC SC SC IS IS IS IS IS IS IS IS NM NM NM NM IS  
TSTMS IS IS IS IS  
HEAT INDEX 90 86 82 80 90 95 97 90 84 81 89 94 96 89 83 87  
MAX HEAT 100 91 95 103 102 93 95 102 101 88 92  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 87 75 88 76 88 77 87 76 87  
TEMP 87 78 75 82 88 79 76 83 88 80 77 83 87 79 77 83 87 79  
DEWPT 72 73 72 73 73 72 72 73 74 74 73 74 75 74 73 74 74 73  
PWIND DIR E E E SE E E E E E  
WIND CHAR GN LT GN 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 20 30 30 40 40 40 40 40 40  
RAIN SHWRS IS IS SC SC IS IS IS IS IS IS SC SC SC IS SC SC SC SC  
 

 
 
PRZ003-200815-  
SOUTHEAST-  
INCLUDING THE CITIES OF ARROYO, GUAYAMA, MAUNABO, PATILLAS,  
SALINAS, AND YABUCOA  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 67 75 81 77 87 92 67 75 81 78 90 95 67 73 80  
TEMP 83 79 77 76 75 82 86 87 82 78 77 76 75 83 88 90 83 78 76 74 74 82  
DEWPT 74 74 74 74 73 73 74 74 73 73 73 72 72 72 71 71 72 72 71 72 71 71  
RH 74 85 90 94 94 74 68 65 74 85 87 87 90 70 57 54 70 82 85 93 90 69  
WIND DIR E E E E E E SE SE E E E NE NE E E E E NE NE NE NE NE  
WIND SPD 14 10 12 10 10 14 16 16 13 8 9 9 9 13 14 13 13 9 6 6 5 6  
WIND GUST 23 26 26  
CLOUDS FW SC SC B1 B1 B1 B1 FW FW FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 40 40 10 30 30  
QPF 12HR 0.00-0.05 0.02 0.01 0.02 0.02  
RAIN SHWRS IS SC SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 89 83 88 94 96 87 80 88 94 96 87 80 86  
MAX HEAT 100 89 94 102 101 89 94 104 102 86 92  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 72 89 73 90 74 89 74 89  
TEMP 89 77 73 82 89 78 74 83 90 79 75 83 89 79 75 83 89 79  
DEWPT 69 72 72 72 72 71 72 72 72 73 73 73 72 73 72 72 72 72  
PWIND DIR E NE E E E E E NE E  
WIND CHAR GN LT LT LT GN LT GN GN GN  
AVG CLOUDS SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 20 20 20 20 20 20 40 40  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS SC SC SC  
 

 
 
PRZ004-200815-  
EASTERN INTERIOR-  
INCLUDING THE CITIES OF AGUAS BUENAS, CAGUAS, CAYEY, CIDRA,  
COMERIO, GURABO, JUNCOS, LAS PIEDRAS, AND SAN LORENZO  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 66 73 77 78 86 90 68 73 76 78 88 94 67 72 75  
TEMP 80 77 75 74 73 80 85 86 80 77 75 74 73 81 86 88 81 77 74 73 72 81  
DEWPT 73 73 73 73 72 72 72 72 73 72 72 72 71 72 70 70 71 71 71 71 70 70  
RH 79 87 94 97 97 77 65 63 79 85 90 93 93 74 59 55 72 82 90 93 93 69  
WIND DIR E E E E E SE SE SE SE E E E E E E E E E NE E E E  
WIND SPD 13 8 9 6 8 13 14 16 13 6 6 5 5 11 13 13 11 5 4 4 3 5  
CLOUDS SC SC SC B1 B1 B1 B1 FW FW FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 40 40 5 50 50  
QPF 12HR 0.00-0.06 0.01-0.07 0.01 0.01-0.18 0.03  
RAIN SHWRS IS SC SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 84 84 91 92 83 85 91 93 84 84  
MAX HEAT 96 85 91 100 99 93 102 101 90  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 87 71 87 72 88 73 87 72 87  
TEMP 87 76 72 80 87 77 73 81 88 78 74 81 87 77 73 81 87 77  
DEWPT 68 71 71 71 71 71 71 71 71 72 72 72 72 72 71 72 72 71  
PWIND DIR E E E SE E E E NE E  
WIND CHAR GN LT LT LT GN LT GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 30 20 20 20 40 40 40 40  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS SC IS IS SC SC SC  
 

 
 
PRZ005-200815-  
NORTH CENTRAL-  
INCLUDING THE CITIES OF ARECIBO, BARCELONETA, DORADO, FLORIDA,  
MANATI, VEGA ALTA, AND VEGA BAJA  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 76 80 86 90 92 70 75 79 92 69 75 79  
TEMP 84 80 78 77 76 84 89 90 84 79 77 76 75 85 90 92 85 80 78 76 75 84  
DEWPT 74 74 74 74 73 73 73 73 74 74 73 73 72 73 71 71 73 73 72 71 71 72  
RH 72 82 88 90 90 70 59 58 72 85 87 90 90 67 54 51 67 79 82 85 87 67  
WIND DIR E E E SE SE E E E E E SE SE SE E E NE NE E E E E E  
WIND SPD 14 9 8 6 6 12 14 14 13 9 8 6 8 11 14 17 16 6 5 4 4 5  
WIND GUST 26 26 28 28 20 26  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC SC  
POP 12HR 20 30 5 40 40  
QPF 12HR 0 0.00-0.33 0 0.00-0.12 0.03  
RAIN SHWRS IS IS IS IS IS IS IS SC SC IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 92 84 91 97 99 91 82 91 97 99 91 83 90  
MAX HEAT 99 89 95 102 101 88 96 103 102 87 94  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 92 74 92 75 92 76 92 75 92  
TEMP 92 79 75 84 92 80 76 85 92 81 77 85 92 80 77 85 92 81  
DEWPT 68 71 72 72 73 72 71 72 73 73 72 73 73 73 72 73 73 73  
PWIND DIR E E E SE E E E E E  
WIND CHAR GN LT LT LT LT LT 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 20 30 20 20 20 20 20 20 40  
RAIN SHWRS IS IS IS SC IS IS IS IS IS IS IS IS IS IS IS IS SC SC  
 

 
 
PRZ006-200815-  
CENTRAL INTERIOR-  
INCLUDING THE CITIES OF AIBONITO, BARANQUITAS, CIALES, COAMO,  
COROZAL, JAYUYA, MOROVIS, NARANJITO, OROCOVIS, AND VILLALBA  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 64 71 76 74 84 91 64 70 74 74 87 94 63 69 74  
TEMP 78 75 73 72 71 79 83 84 78 74 72 71 71 80 85 87 79 75 72 70 70 79  
DEWPT 72 72 72 71 71 71 71 71 71 71 71 70 70 70 68 68 70 70 69 69 68 69  
RH 82 90 97 97100 77 67 65 79 90 97 97 97 72 57 53 74 84 90 97 93 72  
WIND DIR SE E E E E SE SE SE SE E E E E E E E E E NE NE NE E  
WIND SPD 13 8 8 8 9 16 16 16 13 9 10 9 10 12 13 13 13 9 3 2 2 4  
WIND GUST 19  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 30 30 5 30 30  
QPF 12HR 0 0.01-0.45 0 0.01-0.29 0.02  
RAIN SHWRS IS IS IS SC SC IS IS SC SC IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 81 81 88 89 80 82 89 90 81 81  
MAX HEAT 98 84 92 100 98 92 100 100 91  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 68 86 69 87 70 86 70 86  
TEMP 86 74 69 79 86 74 70 80 87 75 71 80 86 75 71 79 86 75  
DEWPT 65 70 68 70 70 70 69 69 70 71 70 71 70 71 69 71 70 70  
PWIND DIR NE NE E SE SE E E NE E  
WIND CHAR GN LT LT LT LT LT GN LT GN  
AVG CLOUDS SC SC SC SC SC SC FW FW SC SC FW FW SC SC FW SC SC SC  
POP 12HR 30 20 20 20 30 20 30 20 40  
RAIN SHWRS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS SC SC  
TSTMS IS  
 

 
 
PRZ007-200815-  
PONCE AND VICINITY-  
INCLUDING THE CITIES OF GUAYANILLA, JUANA DIAZ, YAUCO, PENUELAS,  
PONCE, AND SANTA ISABEL  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 63 74 80 74 88 92 64 73 78 73 91 95 63 71 77  
TEMP 82 78 76 75 74 82 87 88 81 77 75 74 74 83 89 91 82 77 74 72 72 82  
DEWPT 72 72 73 73 72 72 71 71 72 72 72 71 70 71 69 68 70 71 69 69 69 69  
RH 72 82 90 94 93 72 59 57 74 85 90 90 87 67 52 47 67 82 84 90 90 65  
WIND DIR SE E E E E E SE SE SE E E E E E SE SE SE NE NE NE NE NE  
WIND SPD 16 10 11 11 11 16 19 18 14 10 11 12 12 14 16 16 14 6 4 3 3 4  
CLOUDS FW SC SC SC SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 20 20 5 30 20  
QPF 12HR 0 0.02-0.45 0 0.01-0.41 0.01  
RAIN SHWRS IS IS IS IS IS IS IS IS IS SC SC IS IS IS IS IS  
TSTMS IS IS  
HEAT INDEX 87 81 87 93 94 86 88 94 96 86 85  
MAX HEAT 98 87 94 102 100 84 94 103 101 83 92  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 70 91 71 91 72 90 71 91  
TEMP 90 76 71 82 91 77 72 82 91 78 73 83 90 77 72 82 91 78  
DEWPT 66 70 70 70 71 70 70 69 69 71 71 71 70 71 71 71 70 71  
PWIND DIR E NE E E E E E NE E  
WIND CHAR LT LT LT LT LT LT GN LT GN  
AVG CLOUDS SC SC FW FW SC SC FW FW SC SC FW FW SC SC FW FW SC SC  
POP 12HR 30 20 40 20 30 20 30 20 40  
RAIN SHWRS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS SC SC  
TSTMS IS  
 

 
 
PRZ008-200815-  
NORTHWEST-  
INCLUDING THE CITIES OF AGUADILLA, CAMUY, HATILLO, ISABELA,  
AND QUEBRADILLAS  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 75 80 85 88 92 70 74 78 87 90 93 70 74 77  
TEMP 82 79 77 76 75 83 87 88 82 78 76 75 74 83 88 90 83 78 76 75 74 83  
DEWPT 75 74 74 73 73 74 73 73 74 74 73 73 72 73 72 73 74 74 72 71 71 72  
RH 79 85 90 90 94 74 63 61 77 88 90 94 93 72 59 58 74 88 87 87 90 70  
WIND DIR E E E E E E E E E E E E E E NE NE E E E E E E  
WIND SPD 11 9 9 9 9 10 12 13 12 8 10 10 8 12 14 18 16 6 9 8 6 6  
WIND GUST 21 28 28 18 19  
CLOUDS SC SC SC SC SC SC SC B1 B1 FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 10 60 0 30 20  
QPF 12HR 0 0.17-0.57 0 0.02-0.17 0.01  
RAIN SHWRS SC IS IS IS IS IS IS NM NM SC SC IS IS IS IS IS  
TSTMS IS IS  
HEAT INDEX 89 82 89 94 96 88 89 95 98 89 80 88  
MAX HEAT 99 87 94 101 100 85 93 102 101 85 91  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 73 89 74 89 75 89 74 90  
TEMP 89 78 74 82 89 78 75 83 89 79 76 83 89 78 75 83 90 79  
DEWPT 71 71 71 72 73 72 71 72 72 73 72 73 74 74 73 73 74 73  
PWIND DIR NE E E SE E E E E E  
WIND CHAR GN LT LT LT LT LT GN GN GN  
AVG CLOUDS SC SC FW FW SC SC SC SC SC SC SC SC SC SC FW SC SC SC  
POP 12HR 20 20 20 20 20 20 30 20 40  
RAIN SHWRS IS IS IS IS IS IS IS IS SC SC IS IS IS IS IS IS SC SC  
 

 
 
PRZ009-200815-  
WESTERN INTERIOR-  
INCLUDING THE CITIES OF ADJUNTAS, LARES, LAS MARIAS, MARICAO,  
SABANA GRANDE, SAN SEBASTIAN, AND UTUADO  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 66 71 76 75 84 90 66 70 75 77 89 94 65 69 73  
TEMP 79 75 73 72 71 79 83 84 78 74 72 71 71 81 87 89 80 75 72 70 70 80  
DEWPT 72 72 72 71 71 72 70 71 72 72 71 70 70 71 69 69 71 71 69 68 68 69  
RH 79 90 97 97100 79 65 65 82 93 97 97 97 72 55 52 74 87 90 93 93 69  
WIND DIR SE E E E E E SE SE SE SE E E E E E E E NE NE E E E  
WIND SPD 12 6 8 9 10 14 16 16 13 10 9 10 10 13 12 12 10 4 3 3 3 3  
WIND GUST 19  
CLOUDS SC SC SC FW FW SC SC B1 B1 FW FW FW FW FW FW B1 B1 SC SC SC SC FW  
POP 12HR 20 50 0 40 20  
QPF 12HR 0 0.05-0.58 0 0.07-0.41 0.01  
RAIN SHWRS SC IS IS IS IS IS IS SC SC SC SC IS IS IS IS IS  
TSTMS IS IS IS IS IS  
HEAT INDEX 81 81 88 90 84 91 93 83 83  
MAX HEAT 96 84 90 98 97 92 101 101 90  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 88 68 88 69 88 70 88 69 89  
TEMP 88 74 69 80 88 75 70 80 88 76 71 81 88 75 70 81 89 76  
DEWPT 66 69 68 70 71 70 69 69 69 71 70 71 71 71 70 71 71 70  
PWIND DIR NE E E SE SE E E NE E  
WIND CHAR LT LT LT LT LT LT LT LT LT  
AVG CLOUDS SC B1 FW FW SC SC FW FW SC SC FW FW SC SC FW FW SC SC  
POP 12HR 50 20 40 20 40 20 40 20 50  
RAIN SHWRS SC SC IS IS SC SC IS IS IS IS IS IS SC SC IS IS SC SC  
TSTMS IS IS IS IS IS IS  
 

 
 
PRZ010-200815-  
MAYAGUEZ AND VICINITY-  
INCLUDING THE CITIES OF AGUADA, ANASCO, HORMIGUEROS, MAYAGUEZ,  
MOCA, RINCON, AND SAN GERMAN  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 70 76 82 79 87 89 69 75 80 83 90 93 68 74 79  
TEMP 83 80 78 77 76 82 86 87 82 79 77 76 75 84 89 90 83 79 77 75 75 83  
DEWPT 74 74 74 73 73 74 73 74 74 74 73 73 72 72 72 72 73 73 72 71 70 71  
RH 74 82 88 87 90 77 65 65 77 85 87 90 90 67 57 56 72 82 85 87 84 67  
WIND DIR NE E E E E E SE SE SE E E E NE E E E SW E E E E E  
WIND SPD 9 6 9 8 8 11 13 14 12 9 8 6 6 10 10 10 8 3 8 6 6 5  
WIND GUST 19 23 18 18 20 19  
CLOUDS B1 SC SC SC SC SC SC B1 B1 FW FW FW FW FW FW B1 B1 SC SC SC SC FW  
POP 12HR 10 60 0 40 20  
QPF 12HR 0 0.06-0.59 0 0.02-0.40 0.01  
RAIN SHWRS SC IS IS IS IS NM NM SC SC IS  
TSTMS IS IS IS IS IS  
HEAT INDEX 89 83 88 93 95 87 80 90 96 98 89 81 88  
MAX HEAT 99 90 94 99 98 89 93 102 101 87 93  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 73 90 74 90 75 90 74 91  
TEMP 90 78 74 83 90 79 75 83 90 80 76 84 90 79 75 84 91 80  
DEWPT 69 71 71 72 72 72 72 71 71 73 72 73 73 74 73 73 73 73  
PWIND DIR E E E SE E E E E E  
WIND CHAR LT LT LT LT LT LT GN GN GN  
AVG CLOUDS SC SC FW FW SC SC FW FW SC SC FW FW SC SC FW FW SC SC  
POP 12HR 40 20 40 20 40 20 40 20 50  
RAIN SHWRS IS IS IS IS IS SC IS IS IS IS IS IS SC SC IS IS SC SC  
TSTMS IS IS IS IS IS IS  
 

 
 
PRZ011-200815-  
SOUTHWEST-  
INCLUDING THE CITIES OF CABO ROJO, GUANICA, AND LAJAS  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 85 89 91 76 88 93 94 72 74 79  
TEMP 85 82 80 79 78 84 88 89 83 80 78 77 77 86 91 93 85 80 77 75 75 85  
DEWPT 74 74 74 74 74 74 73 73 74 74 73 73 72 72 72 72 72 73 72 70 70 71  
RH 70 77 82 85 88 72 61 59 74 82 85 87 85 63 54 51 65 79 85 84 84 63  
WIND DIR SE E E E E E SE SE SE E E E NE E SE SE N N NE NE NE NE  
WIND SPD 18 11 11 8 9 17 19 18 16 13 9 8 9 14 17 14 8 5 5 4 4 4  
WIND GUST 21 26 26 19 18 26  
CLOUDS FW FW FW FW FW SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC FW  
POP 12HR 20 20 0 40 20  
QPF 12HR 0 0.00-0.13 0 0.07-0.34 0.01  
RAIN SHWRS IS IS IS IS IS IS IS IS IS SC SC IS  
TSTMS IS IS  
HEAT INDEX 93 87 82 80 91 95 97 90 84 92 99101 91 82 90  
MAX HEAT 98 89 94 100 98 87 94 103 102 86 93  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 93 73 93 74 93 75 93 75 94  
TEMP 93 79 74 85 93 80 75 85 93 80 76 85 93 81 77 86 94 81  
DEWPT 68 72 71 72 71 72 72 71 71 73 73 73 72 73 72 72 72 73  
PWIND DIR E E SE E SE E E E E  
WIND CHAR LT LT LT GN GN GN GN LT GN  
AVG CLOUDS SC SC FW FW SC SC FW FW SC SC FW FW SC SC FW FW SC SC  
POP 12HR 40 20 40 20 30 20 30 20 40  
RAIN SHWRS SC SC IS IS IS SC IS IS IS IS IS IS SC SC IS IS SC SC  
TSTMS IS  
 

 
 
PRZ012-200815-  
CULEBRA-  
INCLUDING THE CITY OF CULEBRA  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 87 82 87 81  
TEMP 84 83 81 81 81 84 87 87 85 83 82 82 82 85 86 87 84 83 82 81 81 84  
DEWPT 77 76 76 76 75 75 76 76 76 77 76 75 75 75 75 76 75 75 75 75 74 75  
RH 80 80 85 85 82 74 70 70 75 82 82 79 79 72 70 70 74 77 79 82 79 74  
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 17 17 19 17 17 19 19 17 16 13 14 11 12 13 13 12 14 12 14 14 11 11  
CLOUDS SC SC SC B1 B1 SC SC FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC  
POP 12HR 40 40 20 40 40  
QPF 12HR 0.01 0.01 0.01 0.03 0.03  
RAIN SHWRS IS SC SC IS IS SC SC IS IS IS IS IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 94 91 88 87 86 93 97 98 95 92 90 88 88 93 95 97 93 90 88 87 86 93  
MAX HEAT 99 90 94 102 102 94 95 100 99 91 94  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 87 81 87 81 87 81 87 81 87  
TEMP 87 83 81 84 87 82 81 84 87 83 81 84 87 83 82 85 87 83  
DEWPT 75 75 75 75 74 74 75 75 76 76 76 75 76 77 76 76 76 77  
PWIND DIR E E E SE E E E E E  
WIND CHAR GN GN GN GN GN BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 30 30 20 20 20 20 40 40  
RAIN SHWRS IS IS SC SC SC IS IS IS IS IS IS IS IS IS SC SC SC SC  
 

 
 
PRZ013-200815-  
VIEQUES-  
INCLUDING THE CITY OF VIEQUES  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 80 88 81 88 80  
TEMP 85 83 81 80 80 85 88 88 86 83 82 81 81 85 87 88 84 82 81 80 80 84  
DEWPT 76 76 76 76 75 75 76 76 76 76 76 75 75 75 75 75 75 75 75 75 74 74  
RH 75 80 85 88 85 72 68 68 72 80 82 82 82 72 68 66 74 79 82 85 82 72  
WIND DIR E E E E E SE E E E E E E E E E E E E E E E E  
WIND SPD 17 16 18 13 12 13 18 16 14 11 11 11 10 11 13 12 12 11 14 14 11 11  
WIND GUST 26  
CLOUDS SC SC SC B1 B1 SC SC FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 40 40 20 50 50  
QPF 12HR 0.01 0.01 0.02 0.03 0.03  
RAIN SHWRS IS SC SC SC SC SC SC IS IS IS IS IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 94 91 87 86 85 93 98 99 95 91 89 87 87 94 96 98 93 89 86 82 82 92  
MAX HEAT 99 92 94 102 102 93 95 99 98 89 94  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 87 79 88 80 88 80 87 80 87  
TEMP 87 81 79 84 88 82 80 84 88 82 80 84 87 83 82 85 87 83  
DEWPT 75 75 74 74 74 74 74 75 75 76 76 75 76 76 76 76 76 75  
PWIND DIR E E E E E E E E E  
WIND CHAR GN GN GN GN GN BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 30 20 40 40 40 40 40 40  
RAIN SHWRS IS IS SC SC IS IS IS IS IS IS SC SC IS IS SC SC SC SC  
 

 
 
VIZ001-200815-  
ST.THOMAS...ST. JOHN...AND ADJACENT ISLANDS-  
INCLUDING THE CITIES OF ANNA'S RETREAT, CHARLOTTE AMALIE,  
CHARLOTTE AMALIE EAST, CHARLOTTE AMALIE WEST, AND CRUZ BAY  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 74 79 82 84 88 90 77 80 83 84 89 91 76 79 82  
TEMP 84 82 81 80 79 84 87 88 85 82 81 80 80 85 88 89 84 82 80 79 79 84  
DEWPT 75 76 75 75 74 74 75 75 75 76 76 75 75 74 75 75 75 75 75 74 74 75  
RH 74 82 82 85 85 72 68 66 72 82 85 85 85 70 66 64 74 79 85 85 85 74  
WIND DIR E E E E E SE SE SE E E E E E E E E E NE E E E E  
WIND SPD 17 17 19 17 16 18 18 17 14 13 14 12 12 13 13 13 13 12 16 14 12 12  
CLOUDS SC SC SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC SC SC SC  
POP 12HR 40 40 30 30 30  
QPF 12HR 0.01 0.01 0.01 0.03 0.02  
RAIN SHWRS IS SC SC IS IS SC SC IS IS SC SC IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 93 89 86 84 82 92 96 97 93 90 86 84 83 93 98100 93 88 85 82 92  
MAX HEAT 100 90 96 103 102 93 95 102 101 90 95  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 88 79 87 79 88 79 88 79 88  
TEMP 88 81 79 84 87 81 79 84 88 81 79 84 88 82 80 85 88 82  
DEWPT 74 75 74 74 74 75 75 75 75 75 76 75 76 76 76 75 76 77  
PWIND DIR E E E E E E E E E  
WIND CHAR GN GN GN GN GN BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 30 30 20 20 20 20 40 40  
RAIN SHWRS IS IS SC SC IS IS IS IS IS IS IS IS IS IS SC SC SC SC  
 

 
 
VIZ002-200815-  
ST CROIX-  
INCLUDING THE CITIES OF CHRISTIANSTED, FREDERIKSTED,  
FREDERIKSTED SOUTHEAST, AND GROVE PLACE  
412 PM AST WED SEP 19 2018  
 
DATE 09/19/18 THU 09/20/18 FRI 09/21/18 SAT  
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 89 74 77 82 89 73 75 80  
TEMP 84 82 80 79 79 84 88 89 84 81 79 78 77 84 88 89 83 79 77 76 75 83  
DEWPT 76 76 76 75 75 74 75 75 75 76 75 75 74 74 74 74 75 76 75 74 74 74  
RH 77 82 88 88 88 72 66 64 74 85 88 91 90 72 63 61 77 91 94 94 97 74  
WIND DIR E E E E E E E E E E E E E E E E NE NE E E E NE  
WIND SPD 18 16 19 14 13 16 17 16 13 10 10 11 9 12 13 13 12 9 14 14 12 14  
WIND GUST 26 27  
CLOUDS SC SC SC SC SC SC SC FW FW FW FW FW FW FW FW SC SC SC SC SC SC SC  
POP 12HR 40 40 5 40 40  
QPF 12HR 0.01 0.01 0 0.01 0.03  
RAIN SHWRS IS IS IS SC SC SC SC IS IS IS IS SC SC SC SC IS  
TSTMS IS IS IS IS  
HEAT INDEX 93 88 85 83 80 92 98 99 92 86 81 92 97 98 91 82 90  
MAX HEAT 99 90 96 103 102 93 94 99 98 87 92  
 
DATE 09/22 SUN 09/23/18 MON 09/24/18 TUE 09/25/18 WED 09/26/18  
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 88 76 89 76 88 77 89  
TEMP 89 79 76 83 88 80 77 84 89 80 77 83 88 81 79 85 89 81  
DEWPT 73 74 74 74 74 74 74 75 76 76 76 75 76 76 76 76 76 77  
PWIND DIR NE E E E E E E E E  
WIND CHAR GN GN GN GN GN BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 20 20 20 20 20 40 40 40  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS SC SC SC SC SC  
 

 
 
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