054  
FNCA52 TJSJ 240801  
FWFSJU  
 
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO  
NATIONAL WEATHER SERVICE SAN JUAN PR  
ISSUED BY NATIONAL WEATHER SERVICE MIAMI FL  
401 AM AST SUN SEP 24 2017  
   
DISCUSSION
 
SOUTHEAST WINDS WILL CONTINUE THROUGH MONDAY BEFORE  
BECOMING MORE EASTERLY TUESDAY. SHOWERS AND SCATTERED THUNDERSTORMS  
WITH HEAVY RAIN AND LOCALLY HIGHER WIND GUSTS ARE POSSIBLE  
BEGINNING SUNDAY AFTERNOON FOR THE USVI AND MONDAY FOR PUERTO  
RICO.  
 
PRZ014-250815-  
SOUTHEAST COASTAL PLAINS-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 20 40  
TEMP (24H TREND) 87 (+3) 74 (+35) 87  
RH % (24H TREND) 66 (-7) 93 (+2) 63  
20FTWND-VAL/AM(MPH) SE 8 E 7  
20FTWND-RDG/PM(MPH) SE 8 LGT/VAR SE 9  
MIXING HGT(FT-AGL/MSL)3500 4000  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ015-250815-  
SOUTHERN HILLS-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 20 40  
TEMP (24H TREND) 85 (+4) 73 (+35) 86  
RH % (24H TREND) 64 (-11) 92 (+1) 63  
20FTWND-VAL/AM(MPH) SE 7 SE 6  
20FTWND-RDG/PM(MPH) SE 7 LGT/VAR SE 7  
MIXING HGT(FT-AGL/MSL)4100 4400  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ016-250815-  
NORTH COASTAL PLAINS-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 20 30  
TEMP (24H TREND) 90 (+3) 77 (+36) 89  
RH % (24H TREND) 59 (-9) 89 (+4) 60  
20FTWND-VAL/AM(MPH) SE 7 SE 6  
20FTWND-RDG/PM(MPH) SE 7 SE 5 SE 6  
MIXING HGT(FT-AGL/MSL)4500 4400  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ017-250815-  
NORTHERN HILLS-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 20 50  
TEMP (24H TREND) 88 (+3) 73 (+34) 88  
RH % (24H TREND) 58 (-9) 93 (+5) 60  
20FTWND-VAL/AM(MPH) SE 6 LGT/VAR  
20FTWND-RDG/PM(MPH) SE 5 LGT/VAR LGT/VAR  
MIXING HGT(FT-AGL/MSL)4400 4500  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ018-250815-  
WEST COAST-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY PCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 20 40  
TEMP (24H TREND) 88 (+1) 76 (+35) 88  
RH % (24H TREND) 65 (-3) 87 (+3) 63  
20FTWND-VAL/AM(MPH) SE 11 SE 8  
20FTWND-RDG/PM(MPH) SE 10 SE 7 SE 8  
MIXING HGT(FT-AGL/MSL)3500 3800  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ019-250815-  
EASTERN INTERIOR-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 20 30  
TEMP (24H TREND) 86 (+2) 73 (+34) 87  
RH % (24H TREND) 62 (-11) 95 (+2) 61  
20FTWND-VAL/AM(MPH) SE 8 SE 6  
20FTWND-RDG/PM(MPH) SE 8 LGT/VAR SE 8  
MIXING HGT(FT-AGL/MSL)4000 4600  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ022-250815-  
LUQUILLO MOUNTAIN RANGE-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 30 30  
TEMP (24H TREND) 83 (+3) 72 (+34) 83  
RH % (24H TREND) 72 (-8) 93 (+1) 70  
20FTWND-VAL/AM(MPH) SE 8 SE 7  
20FTWND-RDG/PM(MPH) SE 8 SE 6 SE 8  
MIXING HGT(FT-AGL/MSL)2700 3300  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ023-250815-  
CENTRAL MOUNTAIN RANGE-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 20 50  
TEMP (24H TREND) 86 (+6) 71 (+34) 86  
RH % (24H TREND) 60 (-13) 95 (+4) 62  
20FTWND-VAL/AM(MPH) SE 7 SE 5  
20FTWND-RDG/PM(MPH) SE 6 LGT/VAR SE 5  
MIXING HGT(FT-AGL/MSL)4400 4800  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ024-250815-  
CAYEY MOUNTAIN RANGE-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 30 20 30  
TEMP (24H TREND) 83 (+3) 73 (+35) 83  
RH % (24H TREND) 69 (-8) 93 (0) 66  
20FTWND-VAL/AM(MPH) SE 7 SE 6  
20FTWND-RDG/PM(MPH) SE 7 LGT/VAR SE 7  
MIXING HGT(FT-AGL/MSL)3100 3900  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ025-250815-  
VIEQUES-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 40 40  
TEMP (24H TREND) 83 (0) 81 (+38) 83  
RH % (24H TREND) 78 (-1) 84 (0) 75  
20FTWND-VAL/AM(MPH) SE 12 SE 10  
20FTWND-RDG/PM(MPH) SE 10 SE 9 SE 10  
MIXING HGT(FT-AGL/MSL)1500 1700  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ026-250815-  
CULEBRA-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 40 40  
TEMP (24H TREND) 83 (-1) 81 (+38) 83  
RH % (24H TREND) 79 (0) 84 (-1) 76  
20FTWND-VAL/AM(MPH) SE 12 SE 12  
20FTWND-RDG/PM(MPH) SE 11 SE 10 SE 11  
MIXING HGT(FT-AGL/MSL)1200 1300  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ027-250815-  
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY PCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 20 40  
TEMP (24H TREND) 87 (+1) 75 (+34) 88  
RH % (24H TREND) 63 (-7) 89 (+4) 60  
20FTWND-VAL/AM(MPH) SE 11 G19 SE 9  
20FTWND-RDG/PM(MPH) SE 11 G19 SE 8 SE 10  
MIXING HGT(FT-AGL/MSL)4000 4500  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
VIZ001-250815-  
SAINT THOMAS AND SAINT JOHN-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER MCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 50 50  
TEMP (24H TREND) 83 (+1) 79 (+37) 83  
RH % (24H TREND) 77 (-2) 84 (0) 73  
20FTWND-VAL/AM(MPH) SE 12 SE 13  
20FTWND-RDG/PM(MPH) SE 12 E 11 SE 11  
MIXING HGT(FT-AGL/MSL)1400 1400  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
VIZ002-250815-  
ST CROIX-  
401 AM AST SUN SEP 24 2017  
 
TODAY TONIGHT MON  
 
CLOUD COVER PCLDY MCLDY MCLDY  
PRECIP TYPE TSTMS TSTMS TSTMS  
CHANCE PRECIP (%) 20 60 60  
TEMP (24H TREND) 83 (0) 81 (+38) 83  
RH % (24H TREND) 78 (0) 85 (+3) 73  
20FTWND-VAL/AM(MPH) SE 13 SE 12  
20FTWND-RDG/PM(MPH) SE 12 E 10 SE 12  
MIXING HGT(FT-AGL/MSL)1700 1500  
TRANSPORT WND (MPH) N 0 N 0  
VENT RATE (KT-FT) 0 0  
DISPERSION 1 1  
DSI 0 N/A N/A  
LAL 2 2 2  
HAINES INDEX 3 2 2  
 
REMARKS...NONE.  
 

 
 
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
TUESDAY
 
CLOUDY WITH SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS IN THE LOWER 80S. HIGHS IN THE LOWER 80S.  
EAST WINDS AROUND 15 MPH.    
WEDNESDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS. LOWS IN THE  
LOWER 80S. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS. LOWS IN  
THE LOWER 80S. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.    
FRIDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS. LOWS IN THE  
LOWER 80S. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.    
SATURDAY
 
MOSTLY CLOUDY WITH SCATTERED SHOWERS. LOWS IN THE  
LOWER 80S. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO 15 MPH.  
 

 
 
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