416  
FOCA82 TJSJ 180733  
AFMSPN  
 
AREA FORECAST MATRICES  
NATIONAL WEATHER SERVICE SAN JUAN PR  
333 AM AST WED OCT 18 2017  
 
PRZ001-182015-  
SAN JUAN AND VICINITY-  
INCLUDING THE CITIES OF BAYAMON, CAROLINA, CATANO, GUAYNABO,  
SAN JUAN, TOA ALTA, TOA BAJA, AND TUJILLO ALTO  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 82 90 93 75 78 82 83 90 92 74 78 81 83 89 91  
TEMP 78 81 84 86 83 80 79 78 78 81 86 87 83 79 78 78 79 81 85 86 83 79  
DEWPT 75 76 75 76 76 76 76 75 74 75 74 73 74 74 74 74 73 74 73 73 73 73  
RH 91 85 74 72 80 88 91 91 88 82 68 63 74 85 88 88 82 79 67 65 72 82  
WIND DIR SE SE SE SE E E E E E E E E E E E E E E E E E E  
WIND SPD 9 12 14 16 12 11 11 11 10 12 14 14 13 11 11 10 10 11 13 12 10 9  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 40 20 20 10 20  
QPF 12HR 0.32-1.16 0.11 0.23 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 87 92 95 91 84 80 87 94 95 90 82 80 81 85 91 93 90 82  
MAX HEAT 92 99 98 93 93 98 97 89 92 96 94  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 78 85 77 84 78 86 77 87  
TEMP 78 81 85 79 77 80 84 79 78 82 86 78 77 80 87 79  
DEWPT 72 72 71 71 71 72 72 72 71 73 73 73 72 73 73 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN GN GN GN GN GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ002-182015-  
NORTHEAST-  
INCLUDING THE CITIES OF CEIBA, CANOVANAS, FAJARDO, HUMACAO,  
LOIZA, LUQUILLO, NAGUABO, AND RIO GRANDE  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 74 87 91 69 79 83 74 86 90 68 79 82 73 86 89  
TEMP 78 80 81 82 81 80 79 79 79 81 83 83 82 80 79 79 79 80 82 83 82 80  
DEWPT 75 76 76 76 76 76 75 75 75 75 75 75 74 74 74 74 73 73 74 73 73 73  
RH 91 88 85 82 85 88 88 88 88 82 77 77 77 82 85 85 82 79 77 72 74 79  
WIND DIR SE SE SE SE E E E E E E E E E E E E E E E E E E  
WIND SPD 11 12 16 16 13 13 14 13 13 13 16 16 13 13 12 12 11 12 13 13 10 10  
WIND GUST 23 24 25 24 24 24 23  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 40 20 20 10 20  
QPF 12HR 0.40-1.16 0.11 0.22 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 80 85 88 90 88 85 82 81 81 86 90 91 88 84 82 81 82 84 88 90 88 83  
MAX HEAT 93 99 97 93 92 97 96 90 92 95 95  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 78 82 78 81 78 83 77 84  
TEMP 78 80 82 78 78 79 81 79 79 81 83 78 78 79 84 79  
DEWPT 72 72 72 71 71 72 73 72 71 73 74 73 72 73 74 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN 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  
POP 12HR 10 20 10 20 10 20 10 20  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
PRZ003-182015-  
SOUTHEAST-  
INCLUDING THE CITIES OF ARROYO, GUAYAMA, MAUNABO, PATILLAS,  
SALINAS, AND YABUCOA  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 76 86 89 71 78 82 76 87 90 70 77 81 76 87 90  
TEMP 77 79 81 82 81 79 78 78 78 80 83 84 81 78 77 77 78 79 82 84 81 78  
DEWPT 74 75 75 75 76 75 75 74 74 75 74 74 73 73 73 73 72 73 73 72 72 72  
RH 90 88 82 79 85 88 91 88 88 85 74 72 77 85 87 87 82 82 74 67 74 82  
WIND DIR E E SE E E E E E E E E E E E E E E E E E E E  
WIND SPD 8 10 13 16 12 11 11 11 10 13 16 16 13 11 11 10 10 11 13 13 10 8  
WIND GUST 20  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 50 20 20 10 20  
QPF 12HR 1.06-1.16 0.11 0.20 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 83 86 89 86 81 80 84 90 90 86 82 87 89 86  
MAX HEAT 92 96 96 91 92 98 96 89 90 95 94  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 83 76 82 77 83 76 84  
TEMP 77 79 83 77 76 78 82 77 77 79 83 76 76 78 84 78  
DEWPT 71 71 71 70 70 71 71 71 70 72 72 72 71 72 72 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN GN GN GN GN GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 20 10 10  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
PRZ004-182015-  
EASTERN INTERIOR-  
INCLUDING THE CITIES OF AGUAS BUENAS, CAGUAS, CAYEY, CIDRA,  
COMERIO, GURABO, JUNCOS, LAS PIEDRAS, AND SAN LORENZO  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 77 85 89 71 75 78 77 85 90 70 75 78 76 85 90  
TEMP 75 77 79 81 79 77 76 75 76 78 82 82 80 77 75 76 76 77 81 82 80 76  
DEWPT 73 74 74 74 75 75 74 73 73 74 73 72 72 72 72 72 71 72 71 71 71 71  
RH 94 90 85 79 88 94 94 94 90 88 74 72 77 85 90 87 85 85 72 69 74 85  
WIND DIR SE SE SE SE E E E E E E E E E E E E E E E E E E  
WIND SPD 6 10 13 14 10 9 9 9 8 10 13 14 11 9 9 8 6 10 12 11 9 5  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 50 20 20 10 20  
QPF 12HR 0.71-1.16 0.11 0.22 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 83 86 82 80 87 87 83 84 86 83  
MAX HEAT 87 94 93 89 95 94 88 94 93  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 81 74 80 75 82 74 83  
TEMP 75 77 81 76 74 77 80 76 75 78 82 74 74 76 83 76  
DEWPT 71 70 69 70 69 70 70 70 69 71 71 71 71 71 71 72  
PWIND DIR E E E E E E E E  
WIND CHAR LT GN LT GN LT GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ005-182015-  
NORTH CENTRAL-  
INCLUDING THE CITIES OF ARECIBO, BARCELONETA, DORADO, FLORIDA,  
MANATI, VEGA ALTA, AND VEGA BAJA  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 86 90 92 73 77 80 91 73 77 80 91  
TEMP 78 81 85 86 83 79 77 77 77 80 86 88 84 78 77 77 78 80 85 88 84 78  
DEWPT 75 75 75 75 76 75 75 74 73 75 74 72 74 73 73 73 72 73 72 71 71 72  
RH 91 82 72 70 80 88 94 90 87 85 68 59 72 85 87 87 82 79 65 57 65 82  
WIND DIR SE SE SE E E E E E E E E E E E E E E E E E E E  
WIND SPD 8 10 11 12 10 9 9 9 9 10 12 12 11 9 9 8 8 10 11 11 10 8  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.30-0.36 0.11 0.23 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 86 93 96 91 81 85 94 96 91 80 83 91 94 89  
MAX HEAT 91 99 98 90 91 99 98 86 90 97 96  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 76 86 76 85 76 87 75 89  
TEMP 76 80 86 77 76 79 85 78 76 80 87 77 75 79 89 78  
DEWPT 71 71 71 71 70 71 71 71 71 72 73 73 71 72 73 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN GN GN GN GN GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ006-182015-  
CENTRAL INTERIOR-  
INCLUDING THE CITIES OF AIBONITO, BARANQUITAS, CIALES, COAMO,  
COROZAL, JAYUYA, MOROVIS, NARANJITO, OROCOVIS, AND VILLALBA  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 72 84 91 67 73 77 73 85 92 66 73 77 72 85 91  
TEMP 73 75 78 79 78 75 74 73 73 76 81 82 79 74 73 74 73 75 79 82 79 74  
DEWPT 72 72 72 73 73 73 72 71 71 72 71 70 71 71 71 71 70 71 69 68 69 70  
RH 97 90 82 82 85 94 93 93 93 87 72 67 77 90 93 90 90 87 72 63 72 87  
WIND DIR SE SE SE SE SE E E E E E E E E E E E E E E E E E  
WIND SPD 5 9 11 12 9 5 6 6 5 9 11 12 10 6 6 5 5 8 10 10 8 4  
WIND GUST 23 23 23  
CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.30-1.08 0.11 0.17-0.24 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS SC SC IS IS IS IS IS IS IS IS  
HEAT INDEX 80 83 80 84 85 81 82 84 80  
MAX HEAT 87 96 95 87 96 94 86 94 92  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 72 81 72 80 72 81 71 83  
TEMP 73 75 81 73 72 74 80 73 72 75 81 73 71 74 83 74  
DEWPT 69 69 68 68 67 69 68 69 68 70 69 70 69 70 70 70  
PWIND DIR E E E E E E E E  
WIND CHAR LT GN LT GN LT LT LT LT  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ007-182015-  
PONCE AND VICINITY-  
INCLUDING THE CITIES OF GUAYANILLA, JUANA DIAZ, YAUCO, PENUELAS,  
PONCE, AND SANTA ISABEL  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 72 86 91 66 76 81 72 88 92 66 76 79 72 88 92  
TEMP 76 78 80 82 81 78 77 76 76 79 84 85 82 77 76 77 77 79 83 85 82 76  
DEWPT 74 74 73 74 74 74 73 72 72 73 72 71 72 72 72 72 71 71 70 69 70 71  
RH 94 88 79 77 79 88 87 87 87 82 67 63 72 85 87 85 82 77 65 59 67 85  
WIND DIR E E SE SE E E E E E E E E E E E E E E E SE E E  
WIND SPD 6 10 12 12 10 8 9 9 9 11 13 13 11 9 9 8 6 10 12 11 9 5  
WIND GUST 24 25 25  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 10  
QPF 12HR 0.11-1.06 0.11 0.18 0.06 0.04  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 81 85 88 86 83 89 90 86 81 87 89 85  
MAX HEAT 90 96 96 90 91 98 95 84 89 96 94  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 84 74 84 75 85 74 86  
TEMP 75 78 84 76 74 78 84 76 75 78 85 76 74 77 86 76  
DEWPT 70 70 68 69 68 69 68 70 69 70 70 71 70 71 70 71  
PWIND DIR E E E E E E E E  
WIND CHAR LT GN LT GN LT GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 10 10 10  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
PRZ008-182015-  
NORTHWEST-  
INCLUDING THE CITIES OF AGUADILLA, CAMUY, HATILLO, ISABELA,  
AND QUEBRADILLAS  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 84 89 91 73 76 80 90 73 76 80 90  
TEMP 77 79 83 84 82 79 77 77 76 79 85 87 84 79 77 77 77 79 84 87 84 79  
DEWPT 74 74 75 75 76 76 74 74 73 74 74 74 74 73 73 72 72 73 72 71 71 72  
RH 90 85 77 74 82 91 90 90 90 85 70 65 72 82 87 85 85 82 67 59 65 79  
WIND DIR E SE E E E E E E E E E E E E E E E E E E E E  
WIND SPD 8 9 9 9 8 9 8 8 9 10 12 12 11 10 9 8 8 10 10 11 11 11  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.30 0.11 0.23 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 82 91 93 89 81 82 93 95 91 80 81 90 93 89 80  
MAX HEAT 89 98 97 92 89 100 100 89 88 97 96  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 76 85 76 84 76 85 75 87  
TEMP 76 78 85 78 76 78 84 78 76 79 85 77 75 77 87 78  
DEWPT 71 71 71 70 70 71 71 71 70 71 73 73 71 72 73 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN 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  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ009-182015-  
WESTERN INTERIOR-  
INCLUDING THE CITIES OF ADJUNTAS, LARES, LAS MARIAS, MARICAO,  
SABANA GRANDE, SAN SEBASTIAN, AND UTUADO  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 74 86 92 68 73 79 75 88 94 68 73 77 75 87 93  
TEMP 74 76 80 82 79 75 74 73 73 76 82 84 80 75 73 73 73 76 81 84 81 75  
DEWPT 72 73 72 73 74 73 71 71 70 71 70 69 71 71 71 70 70 71 69 67 68 70  
RH 93 90 77 74 85 94 90 93 90 85 67 61 74 87 93 90 90 85 67 57 65 84  
WIND DIR SE SE SE SE SE E E E E E E E E E E E E E E E E E  
WIND SPD 5 8 9 9 6 5 5 5 5 8 10 10 8 5 5 4 4 8 9 8 6 5  
WIND GUST 18 20 20 18 23 20 18 19 18  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.11-0.30 0.11 0.17-0.23 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 83 87 82 86 88 84 84 87 83  
MAX HEAT 89 99 97 88 98 96 87 96 94  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 72 82 71 82 72 83 71 85  
TEMP 72 74 82 74 71 74 82 74 72 75 83 73 71 74 85 74  
DEWPT 69 69 68 68 67 69 68 69 68 69 69 71 69 70 70 70  
PWIND DIR E E E E E E E E  
WIND CHAR LT LT LT LT LT LT LT LT  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ010-182015-  
MAYAGUEZ AND VICINITY-  
INCLUDING THE CITIES OF AGUADA, ANASCO, HORMIGUEROS, MAYAGUEZ,  
MOCA, RINCON, AND SAN GERMAN  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 79 89 92 72 77 84 81 91 94 72 78 84 81 90 93  
TEMP 78 80 84 85 83 80 78 78 77 80 86 88 84 80 78 78 78 80 85 87 84 80  
DEWPT 75 75 74 75 76 75 74 73 72 73 73 71 74 73 73 73 72 72 72 71 71 72  
RH 91 85 72 72 80 85 88 85 85 79 65 57 72 79 85 85 82 77 65 59 65 77  
WIND DIR E SE SE SE SE E E E E E E E SE E E E E E E E E E  
WIND SPD 9 11 11 11 9 10 9 10 10 11 12 11 11 11 9 9 9 10 10 9 9 10  
WIND GUST 23 26 26 27 26 26 26 27 27 26 25 25 28 28 27 26 26 26 23 20  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.11-0.30 0.11 0.17-0.23 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 85 92 94 91 83 80 84 93 94 91 82 83 90 93 90 82  
MAX HEAT 96 99 98 97 94 100 99 94 93 97 97  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 86 77 85 77 86 76 87  
TEMP 77 79 86 79 77 79 85 79 77 79 86 79 76 78 87 79  
DEWPT 71 71 70 71 70 71 71 71 70 71 71 73 72 72 72 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN GN GN GN GN GN LT GN  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 30 10 30 10 20 10 20  
RAIN SHWRS IS IS IS SC IS IS IS SC IS IS IS IS IS IS IS IS  
TSTMS IS IS  
 

 
 
PRZ011-182015-  
SOUTHWEST-  
INCLUDING THE CITIES OF CABO ROJO, GUANICA, AND LAJAS  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 83 89 90 79 86 90 92 79 86 91 92  
TEMP 79 81 84 85 84 81 80 79 79 82 86 88 84 80 79 79 80 82 86 88 85 80  
DEWPT 75 75 75 76 76 76 75 74 73 74 74 73 73 73 73 73 72 73 72 71 71 72  
RH 88 82 74 75 77 85 85 85 82 77 68 61 70 79 82 82 77 74 63 57 63 77  
WIND DIR E E SE SE SE E E E E E E SE SE E E E E E E SE SE E  
WIND SPD 12 16 17 17 16 13 13 14 13 14 18 18 17 14 13 12 12 14 16 14 12 11  
WIND GUST 24 24 24 25 25 25 28 25 24 23 23 23  
CLOUDS SC SC SC SC SC SC SC SC SC FW FW SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 20 20 20 10 10  
QPF 12HR 0.11 0.11 0.17 0.06 0.04  
SNOW 12HR MM MM MM  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 81 88 92 94 92 86 82 80 88 94 95 91 84 80 81 83 86 92 94 90 83  
MAX HEAT 91 97 97 92 91 98 96 90 91 96 95  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 78 87 77 87 78 88 77 88  
TEMP 78 80 87 79 77 80 87 80 78 81 88 79 77 80 88 80  
DEWPT 71 71 71 70 70 71 71 72 71 71 71 73 72 73 72 73  
PWIND DIR E E E E E E E E  
WIND CHAR GN 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  
POP 12HR 10 20 10 20 10 10 10 10  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
PRZ012-182015-  
CULEBRA-  
INCLUDING THE CITY OF CULEBRA  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 86 82 86 83 86  
TEMP 82 83 83 84 84 83 83 83 82 83 84 84 84 83 83 83 83 83 83 83 84 84  
DEWPT 77 77 78 78 77 78 77 76 76 76 77 76 75 76 75 75 75 75 75 74 74 74  
RH 85 82 85 82 80 85 82 80 82 80 80 77 74 80 77 77 77 77 77 74 72 72  
WIND DIR SE E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 19 20 20 20 19 21 23 21 21 21 21 21 20 20 20 20 19 19 18 17 16 17  
CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.40 0.11 0.22 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 91 92 94 95 94 92 92 90 90 92 94 94 92 92 91 90 90 90 90 91 91 91  
MAX HEAT 95 97 97 96 94 97 96 93 92 92 92  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 83 83 82 83 83 83 82 84  
TEMP 83 83 83 83 82 82 83 83 83 83 83 83 83 82 84 84  
DEWPT 73 73 74 73 73 73 74 75 74 74 75 75 74 75 75 75  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 20 10 20  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
PRZ013-182015-  
VIEQUES-  
INCLUDING THE CITY OF VIEQUES  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 81 87 89 82 82 87 88 83 82 86 88  
TEMP 82 82 82 84 83 83 82 82 82 83 84 84 84 83 83 83 83 83 83 83 84 84  
DEWPT 77 77 77 77 78 78 76 76 76 76 76 76 75 75 75 75 74 74 74 74 74 74  
RH 85 85 85 80 85 85 82 82 82 80 77 77 74 77 77 77 74 74 74 74 72 72  
WIND DIR SE E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 19 19 20 20 19 20 21 21 20 21 21 20 20 20 20 19 19 18 18 17 14 17  
CLOUDS B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 40 20 20 10 20  
QPF 12HR 0.40-0.75 0.11 0.22 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS SC SC SC SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS SC SC IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 90 90 91 93 94 92 90 90 89 92 93 94 92 91 91 89 89 90 90 90 91 91  
MAX HEAT 95 98 98 95 94 97 96 93 92 94 94  
FLASH FLOOD A A A A A  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 83 83 82 83 83 83 81 84  
TEMP 83 83 83 83 82 82 82 83 83 83 83 82 83 81 84 83  
DEWPT 73 73 73 73 72 73 74 74 74 74 75 74 74 74 75 75  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 20 10 20  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
VIZ001-182015-  
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  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 80 85 87 77 81 83 80 85 87 77 82 83 80 85 86  
TEMP 81 82 82 82 82 82 82 81 81 82 83 83 82 82 82 82 82 82 82 82 82 82  
DEWPT 77 77 77 76 77 76 76 76 75 76 75 75 74 74 74 74 74 73 73 73 73 73  
RH 88 85 85 82 85 82 82 85 82 82 77 77 77 77 77 77 77 74 74 74 74 74  
WIND DIR SE E E E E E E E E E E E E E E E E E E E E E  
WIND SPD 20 23 20 20 20 21 23 21 21 23 23 21 21 20 21 20 19 19 19 17 17 17  
CLOUDS B1 SC SC B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 20  
QPF 12HR 0.36 0.11 0.22 0.06 0.06  
SNOW 12HR MM MM MM  
RAIN SHWRS SC IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 88 89 91 90 91 89 88 87 87 88 90 90 89 89 88 87 87 87 88 87 88 87  
MAX HEAT 95 97 97 95 94 96 96 93 92 92 92  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 82 83 81 82 82 82 81 83  
TEMP 82 82 82 83 81 81 82 82 82 82 82 82 82 81 83 81  
DEWPT 72 72 72 72 72 72 72 73 73 74 74 73 72 73 73 74  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 20 10 20  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
VIZ002-182015-  
ST CROIX-  
INCLUDING THE CITIES OF CHRISTIANSTED, FREDERIKSTED,  
FREDERIKSTED SOUTHEAST, AND GROVE PLACE  
333 AM AST WED OCT 18 2017  
 
DATE WED 10/18/17 THU 10/19/17 FRI 10/20/17  
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 86 82 86 82 86  
TEMP 81 83 84 84 83 83 82 82 82 83 84 84 83 83 83 82 82 82 83 83 84 83  
DEWPT 77 77 77 77 77 76 76 76 76 76 75 76 75 75 75 74 74 74 74 74 74 74  
RH 88 82 80 80 82 80 82 82 82 80 74 77 77 77 77 77 77 77 74 74 72 74  
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 21 24 23 21 21 23 24 23 23 24 24 23 23 23 21 21 20 20 20 18 17 18  
CLOUDS B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 30 20 20 10 10  
QPF 12HR 0.36 0.11 0.21 0.06 0.03  
SNOW 12HR MM MM MM  
RAIN SHWRS SC IS IS SC SC IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS IS IS IS IS IS IS IS IS IS IS IS IS  
HEAT INDEX 89 91 94 94 93 91 90 89 89 91 92 93 91 90 90 89 88 88 89 90 91 90  
MAX HEAT 95 98 98 95 95 96 96 93 92 94 94  
 
DATE SAT 10/21/17 SUN 10/22/17 MON 10/23/17 TUE 10/24/17  
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 83 83 82 83 83 83 81 84  
TEMP 83 83 83 83 82 82 82 83 83 83 83 83 83 81 84 83  
DEWPT 73 73 73 72 72 73 73 74 74 74 74 74 73 74 74 75  
PWIND DIR E E E E E E E E  
WIND CHAR BZ BZ BZ BZ BZ BZ BZ BZ  
AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC  
POP 12HR 10 20 10 20 10 10 10 10  
RAIN SHWRS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS IS  
TSTMS IS  
 

 
 
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