557  
FNCA52 TJSJ 290753  
FWFSJU  
 
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO  
NATIONAL WEATHER SERVICE SAN JUAN PR  
353 AM AST WED MAR 29 2017  
   
DISCUSSION
 
WINDS ARE EXPECTED TO BECOME FROM THE NORTHEAST  
TODAY AND FOR THE NEXT FEW DAYS. THIS IN COMBINATION WITH ABUNDANT  
MOISTURE ACROSS THE REGION AND LOCAL EFFECTS WILL INDUCE THE  
DEVELOPMENT OF SHOWERS AND POSIBLE THUNDERSTORMS ALONG AND NEAR  
CORDILLERA CENTRAL EARLY THIS AFTERNOON AND ACROSS SOUTHERN  
SECTIONS OF PUERTO RICO BY MID AFTERNOON. SOILS ACROSS THE  
SOUTHERN PLAINS OF PUERTO RICO REMAINS RELATIVELY MOIST DUE TO  
THE WETTING RAINS OF PREVIOUS DAYS. THEREFORE FIRE DANGER WILL  
CONTINUE LOW TODAY AND FOR THE NEXT FEW DAYS.  
 
PRZ014-300800-  
SOUTHEAST COASTAL PLAINS-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE TSTMS SHOWERS SHOWERS  
CHANCE PRECIP (%) 50 50 30  
TEMP (24H TREND) 90 (0) 67 (-5) 91  
RH % (24H TREND) 43 (0) 98 (+10) 40  
20FTWND-VAL/AM(MPH) LGT/VAR NE 10  
20FTWND-RDG/PM(MPH) SE 7 NE 9 E 9  
MIXING HGT(FT-AGL/MSL)8047 7099  
TRANSPORT WND (MPH) SW 3 NE 6  
VENT RATE (KT-FT) 32176 47169  
DISPERSION 5 5  
DSI 5 4 6  
LAL 2 2 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ015-300800-  
SOUTHERN HILLS-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE TSTMS SHOWERS SHOWERS  
CHANCE PRECIP (%) 60 60 30  
TEMP (24H TREND) 89 (+3) 62 (-6) 87  
RH % (24H TREND) 47 (-3) 100 (+7) 47  
20FTWND-VAL/AM(MPH) LGT/VAR NE 9  
20FTWND-RDG/PM(MPH) NE 5 NE 9 NE 8  
MIXING HGT(FT-AGL/MSL)7708 7513  
TRANSPORT WND (MPH) W 2 NE 6  
VENT RATE (KT-FT) 29800 49905  
DISPERSION 5 5  
DSI 5 3 5  
LAL 2 2 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ016-300800-  
NORTH COASTAL PLAINS-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 20 10  
TEMP (24H TREND) 84 (-2) 66 (-7) 84  
RH % (24H TREND) 58 (-1) 100 (+12) 54  
20FTWND-VAL/AM(MPH) LGT/VAR NE 8  
20FTWND-RDG/PM(MPH) N 8 NE 6 NE 11  
MIXING HGT(FT-AGL/MSL)5229 5137  
TRANSPORT WND (MPH) NW 5 NE 10  
VENT RATE (KT-FT) 23328 54780  
DISPERSION 5 5  
DSI 5 4 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ017-300800-  
NORTHERN HILLS-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 20 20  
TEMP (24H TREND) 84 (-2) 64 (-6) 85  
RH % (24H TREND) 57 (-1) 100 (+11) 53  
20FTWND-VAL/AM(MPH) LGT/VAR E 7  
20FTWND-RDG/PM(MPH) N 8 NE 5 NE 11  
MIXING HGT(FT-AGL/MSL)6355 6318  
TRANSPORT WND (MPH) NW 3 NE 8  
VENT RATE (KT-FT) 21990 49910  
DISPERSION 5 5  
DSI 5 3 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ018-300800-  
WEST COAST-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 89 (+2) 65 (-5) 87  
RH % (24H TREND) 46 (-8) 100 (+3) 46  
20FTWND-VAL/AM(MPH) N 5 NE 9  
20FTWND-RDG/PM(MPH) N 8 NE 9 E 7  
MIXING HGT(FT-AGL/MSL)7865 7791  
TRANSPORT WND (MPH) NW 3 NE 6  
VENT RATE (KT-FT) 23415 51997  
DISPERSION 5 5  
DSI 6 5 6  
LAL 2 2 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ019-300800-  
EASTERN INTERIOR-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE TSTMS SHOWERS SHOWERS  
CHANCE PRECIP (%) 50 50 20  
TEMP (24H TREND) 87 (0) 63 (-6) 85  
RH % (24H TREND) 54 (-1) 100 (+6) 51  
20FTWND-VAL/AM(MPH) LGT/VAR NE 6  
20FTWND-RDG/PM(MPH) NE 6 LGT/VAR NE 10  
MIXING HGT(FT-AGL/MSL)6489 5737  
TRANSPORT WND (MPH) NW 3 NE 9  
VENT RATE (KT-FT) 20980 46140  
DISPERSION 5 5  
DSI 5 3 5  
LAL 2 2 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ022-300800-  
LUQUILLO MOUNTAIN RANGE-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 83 (+2) 61 (-5) 82  
RH % (24H TREND) 60 (0) 100 (+1) 59  
20FTWND-VAL/AM(MPH) LGT/VAR NE 8  
20FTWND-RDG/PM(MPH) N 7 N 5 NE 11  
MIXING HGT(FT-AGL/MSL)5051 4578  
TRANSPORT WND (MPH) NW 5 NE 9  
VENT RATE (KT-FT) 17236 36855  
DISPERSION 5 5  
DSI 5 3 5  
LAL 1 1 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ023-300800-  
CENTRAL MOUNTAIN RANGE-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE TSTMS SHOWERS SHOWERS  
CHANCE PRECIP (%) 60 60 30  
TEMP (24H TREND) 85 (+2) 61 (-6) 85  
RH % (24H TREND) 52 (-4) 100 (+6) 50  
20FTWND-VAL/AM(MPH) LGT/VAR NE 8  
20FTWND-RDG/PM(MPH) N 6 NE 6 NE 9  
MIXING HGT(FT-AGL/MSL)6836 7043  
TRANSPORT WND (MPH) W 2 NE 6  
VENT RATE (KT-FT) 23005 47835  
DISPERSION 5 5  
DSI 5 3 5  
LAL 2 2 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ024-300800-  
CAYEY MOUNTAIN RANGE-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE TSTMS SHOWERS SHOWERS  
CHANCE PRECIP (%) 60 60 20  
TEMP (24H TREND) 86 (+3) 62 (-4) 84  
RH % (24H TREND) 52 (-1) 100 (+2) 51  
20FTWND-VAL/AM(MPH) LGT/VAR N 8  
20FTWND-RDG/PM(MPH) NE 5 N 7 NE 10  
MIXING HGT(FT-AGL/MSL)6995 5532  
TRANSPORT WND (MPH) NW 2 NE 9  
VENT RATE (KT-FT) 18414 44001  
DISPERSION 5 5  
DSI 5 2 5  
LAL 2 2 1  
HAINES INDEX 3 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ025-300800-  
VIEQUES-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 83 (+1) 66 (-2) 82  
RH % (24H TREND) 62 (-4) 100 (0) 64  
20FTWND-VAL/AM(MPH) NE 5 NE 11  
20FTWND-RDG/PM(MPH) NE 8 N 10 NE 12  
MIXING HGT(FT-AGL/MSL)3066 3793  
TRANSPORT WND (MPH) N 6 NE 12  
VENT RATE (KT-FT) 14695 41327  
DISPERSION 4 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ026-300800-  
CULEBRA-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 84 (+2) 70 (-2) 84  
RH % (24H TREND) 62 (-5) 94 (0) 61  
20FTWND-VAL/AM(MPH) NE 6 NE 11  
20FTWND-RDG/PM(MPH) N 8 NE 10 NE 12  
MIXING HGT(FT-AGL/MSL)2588 4020  
TRANSPORT WND (MPH) N 10 NE 12  
VENT RATE (KT-FT) 23292 40200  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
PRZ027-300800-  
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS NONE SHOWERS  
CHANCE PRECIP (%) 50 0 30  
TEMP (24H TREND) 91 (+3) 66 (-5) 89  
RH % (24H TREND) 42 (-7) 100 (+6) 41  
20FTWND-VAL/AM(MPH) LGT/VAR E 7  
20FTWND-RDG/PM(MPH) SW 7 E 7 SE 7  
MIXING HGT(FT-AGL/MSL)8058 8062  
TRANSPORT WND (MPH) W 3 NE 5  
VENT RATE (KT-FT) 31208 46480  
DISPERSION 5 5  
DSI 5 4 5  
LAL 2 2 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
VIZ001-300800-  
SAINT THOMAS AND SAINT JOHN-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 85 (+1) 70 (-4) 85  
RH % (24H TREND) 57 (-5) 91 (+3) 54  
20FTWND-VAL/AM(MPH) N 5 NE 11  
20FTWND-RDG/PM(MPH) N 7 N 10 NE 11  
MIXING HGT(FT-AGL/MSL)2646 3609  
TRANSPORT WND (MPH) N 9 NE 12  
VENT RATE (KT-FT) 23157 36090  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
 
VIZ002-300800-  
ST CROIX-  
353 AM AST WED MAR 29 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER PCLDY PCLDY MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 40 20  
TEMP (24H TREND) 88 (+3) 68 (-1) 87  
RH % (24H TREND) 53 (-8) 100 (+4) 53  
20FTWND-VAL/AM(MPH) LGT/VAR NE 11  
20FTWND-RDG/PM(MPH) LGT/VAR NE 9 NE 11  
MIXING HGT(FT-AGL/MSL)2652 3344  
TRANSPORT WND (MPH) N 2 NE 13  
VENT RATE (KT-FT) 7440 36784  
DISPERSION 3 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 3 3  
 
REMARKS...NONE.  
 

 
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
FRIDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS IN THE UPPER  
60S. HIGHS IN THE LOWER 80S. NORTH WINDS AROUND 10 MPH.    
SATURDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS. LOWS IN THE UPPER  
60S. HIGHS IN THE MID 80S. NORTHEAST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 60S. HIGHS IN THE MID  
80S. EAST WINDS AROUND 10 MPH.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 60S. HIGHS IN THE MID  
80S. NORTHEAST WINDS AROUND 5 MPH.    
TUESDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 60S. HIGHS IN THE MID  
80S. NORTHEAST WINDS AROUND 10 MPH.  
 

 
 
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