Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
244
FNCA52 TJSJ 180832
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
432 AM AST Fri Apr 18 2025
.DISCUSSION...
An increase in misture and southeasterly winds will dominate the
region today resulting in RH values in the upper 50s to the lowers
60s. Winds will remain light and variables during the day,
10 knots.Given the expected conditions, the fire danger threat
will remain low for today.
PRZ014-190845-
Southeast Coastal Plains-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 60 50 60
Temp (24h trend) 89 (+1) 73 (-1) 88
RH % (24h trend) 50 (-5) 85 (+3) 53
Wind 20ft/early(mph) SE 10 NE 6 E 13 G18
Wind 20ft/late(mph) SE 10 NE 6 E 13 G18
Mixing Hgt(ft-agl/msl)4000 4220
Transport Wnd (mph) SE 7 E 8
Vent Rate (kt-ft) 24000 29540
Dispersion 5 5
DSI 5 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-190845-
Southern Hills-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 50 60
Temp (24h trend) 85 (+2) 69 (-3) 84
RH % (24h trend) 65 (-2) 96 (+7) 66
Wind 20ft/early(mph) E 6 NE 8 NE 10
Wind 20ft/late(mph) E 6 NE 8 NE 10
Mixing Hgt(ft-agl/msl)4440 4310
Transport Wnd (mph) E 5 E 7
Vent Rate (kt-ft) 17760 25860
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ016-190845-
North Coastal Plains-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 60 60
Temp (24h trend) 87 (-2) 72 (-2) 85
RH % (24h trend) 66 (+3) 97 (+3) 70
Wind 20ft/early(mph) NE 11 NE 12 NE 16 G18
Wind 20ft/late(mph) NE 11 NE 12 NE 16 G18
Mixing Hgt(ft-agl/msl)3860 3650
Transport Wnd (mph) E 5 E 12
Vent Rate (kt-ft) 15440 36500
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-190845-
Northern Hills-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 50 60
Temp (24h trend) 85 (-1) 70 (-2) 83
RH % (24h trend) 71 (+7) 96 (+3) 74
Wind 20ft/early(mph) NE 10 NE 11 NE 14
Wind 20ft/late(mph) NE 10 NE 11 NE 14
Mixing Hgt(ft-agl/msl)4010 3970
Transport Wnd (mph) E 3 NE 10
Vent Rate (kt-ft) 12030 35730
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
PRZ018-190845-
West Coast-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 80 50 70
Temp (24h trend) 88 (0) 69 (-3) 88
RH % (24h trend) 65 (+1) 98 (+4) 63
Wind 20ft/early(mph) E 13 NE 16 E 18
Wind 20ft/late(mph) E 13 NE 16 E 18
Mixing Hgt(ft-agl/msl)4160 4330
Transport Wnd (mph) NE 5 E 6
Vent Rate (kt-ft) 16640 21650
Dispersion 5 5
DSI 5 4 5
RH Recovery Excellent
Remarks...None.
$$
PRZ019-190845-
Eastern Interior-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 86 (-1) 70 (-2) 83
RH % (24h trend) 64 (+2) 97 (+4) 68
Wind 20ft/early(mph) E 5 NE 6 NE 10
Wind 20ft/late(mph) E 5 NE 6 NE 10
Mixing Hgt(ft-agl/msl)4800 3950
Transport Wnd (mph) E 5 E 8
Vent Rate (kt-ft) 19200 27650
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ022-190845-
Luquillo Mountain Range-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 70 70
Temp (24h trend) 81 (-1) 66 (-4) 79
RH % (24h trend) 71 (+1) 100 (+4) 75
Wind 20ft/early(mph) E 5 Lgt/Var NE 8
Wind 20ft/late(mph) E 5 Lgt/Var NE 8
Mixing Hgt(ft-agl/msl)4400 3710
Transport Wnd (mph) SE 3 E 9
Vent Rate (kt-ft) 13200 29680
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ023-190845-
Central Mountain Range-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 90 50 70
Temp (24h trend) 82 (+1) 67 (-3) 82
RH % (24h trend) 72 (+3) 97 (+5) 72
Wind 20ft/early(mph) NE 11 NE 12 NE 14
Wind 20ft/late(mph) NE 11 NE 12 NE 14
Mixing Hgt(ft-agl/msl)4440 4380
Transport Wnd (mph) E 2 E 7
Vent Rate (kt-ft) 8880 26280
Dispersion 5 5
DSI 4 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ024-190845-
Cayey Mountain Range-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 60 60
Temp (24h trend) 82 (0) 68 (-2) 80
RH % (24h trend) 71 (+1) 100 (+3) 75
Wind 20ft/early(mph) E 6 NE 5 E 9
Wind 20ft/late(mph) E 6 NE 5 E 9
Mixing Hgt(ft-agl/msl)4660 4350
Transport Wnd (mph) E 5 E 9
Vent Rate (kt-ft) 18640 34800
Dispersion 5 5
DSI 5 2 5
RH Recovery Excellent
Remarks...None.
$$
PRZ025-190845-
Vieques-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 70 60
Temp (24h trend) 86 (-3) 71 (-3) 86
RH % (24h trend) 61 (+2) 97 (+5) 62
Wind 20ft/early(mph) Lgt/Var NE 9 NE 10
Wind 20ft/late(mph) Lgt/Var NE 9 NE 10
Mixing Hgt(ft-agl/msl)2490 2730
Transport Wnd (mph) E 5 E 12
Vent Rate (kt-ft) 9960 27300
Dispersion 4 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-190845-
Culebra-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 70 60
Temp (24h trend) 86 (-2) 73 (-3) 87
RH % (24h trend) 64 (+1) 98 (+6) 61
Wind 20ft/early(mph) Lgt/Var NE 10 NE 10
Wind 20ft/late(mph) Lgt/Var NE 10 NE 10
Mixing Hgt(ft-agl/msl)2330 2730
Transport Wnd (mph) E 3 E 12
Vent Rate (kt-ft) 6990 27300
Dispersion 4 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-190845-
Southwest Coastal Plains and Mona Island-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 80 50 70
Temp (24h trend) 90 (+1) 71 (-3) 90
RH % (24h trend) 50 (-5) 88 (+4) 50
Wind 20ft/early(mph) E 14 NE 18 G21 E 17 G20
Wind 20ft/late(mph) E 14 NE 18 G21 E 17 G20
Mixing Hgt(ft-agl/msl)4520 4350
Transport Wnd (mph) E 6 E 5
Vent Rate (kt-ft) 22600 17400
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-190845-
Saint Thomas and Saint John-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 83 (-3) 72 (-3) 86
RH % (24h trend) 67 (0) 97 (+4) 64
Wind 20ft/early(mph) SE 8 E 9 NE 11
Wind 20ft/late(mph) SE 8 E 9 NE 11
Mixing Hgt(ft-agl/msl)2410 3150
Transport Wnd (mph) E 3 E 13
Vent Rate (kt-ft) 7230 34650
Dispersion 4 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-190845-
St Croix-
432 AM AST Fri Apr 18 2025
Today Tonight Sat
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 50 70 50
Temp (24h trend) 84 (-3) 74 (-2) 86
RH % (24h trend) 71 (+4) 93 (+3) 64
Wind 20ft/early(mph) SE 6 E 8 E 11
Wind 20ft/late(mph) SE 6 E 8 E 11
Mixing Hgt(ft-agl/msl)4300 4320
Transport Wnd (mph) SE 6 E 14
Vent Rate (kt-ft) 21500 51840
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
$$