Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
225
FNCA52 TJSJ 190842
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
442 AM AST Sat Apr 19 2025
.DISCUSSION...
Increased moisture and northeasterly winds will dominate the
region today resulting in RH values in the upper 50s to the lower
60s. Winds at southern PRat around 10 to 15 mph with higher
gusts, especially near the afternoon showers and t-storms that are
forecast today. Given the expected conditions, the fire danger
threat will remain low for today.
PRZ014-200845-
Southeast Coastal Plains-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 80 40 70
Temp (24h trend) 88 (+1) 69 (-6) 90
RH % (24h trend) 53 (-4) 93 (+9) 45
Wind 20ft/early(mph) NE 13 G18 NE 10 NE 18 G24
Wind 20ft/late(mph) NE 13 G18 NE 10 NE 18 G24
Mixing Hgt(ft-agl/msl)4170 5420
Transport Wnd (mph) E 8 NE 13
Vent Rate (kt-ft) 29190 59620
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-200845-
Southern Hills-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 60 70
Temp (24h trend) 84 (+2) 66 (-6) 85
RH % (24h trend) 66 (-7) 99 (+9) 59
Wind 20ft/early(mph) NE 10 NE 10 NE 14
Wind 20ft/late(mph) NE 10 NE 10 NE 14
Mixing Hgt(ft-agl/msl)4170 5060
Transport Wnd (mph) NE 8 NE 13
Vent Rate (kt-ft) 29190 55660
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-200845-
North Coastal Plains-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 70 40
Temp (24h trend) 85 (-1) 70 (-4) 86
RH % (24h trend) 71 (0) 100 (+6) 62
Wind 20ft/early(mph) NE 16 G18 NE 16 NE 18 G21
Wind 20ft/late(mph) NE 16 G18 NE 16 NE 18 G21
Mixing Hgt(ft-agl/msl)3510 4310
Transport Wnd (mph) E 14 NE 17
Vent Rate (kt-ft) 42120 64650
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-200845-
Northern Hills-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 80 40
Temp (24h trend) 83 (0) 68 (-4) 85
RH % (24h trend) 73 (-1) 100 (+4) 65
Wind 20ft/early(mph) NE 14 NE 13 NE 18
Wind 20ft/late(mph) NE 14 NE 13 NE 18
Mixing Hgt(ft-agl/msl)3810 4570
Transport Wnd (mph) NE 13 NE 17
Vent Rate (kt-ft) 41910 68550
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-200845-
West Coast-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 50 50
Temp (24h trend) 88 (+1) 67 (-4) 88
RH % (24h trend) 63 (-7) 100 (+5) 58
Wind 20ft/early(mph) NE 17 NE 19 NE 19 G22
Wind 20ft/late(mph) NE 17 NE 19 NE 19 G22
Mixing Hgt(ft-agl/msl)4270 5270
Transport Wnd (mph) NE 10 NE 17
Vent Rate (kt-ft) 38430 79050
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-200845-
Eastern Interior-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 80 60
Temp (24h trend) 83 (-1) 67 (-5) 85
RH % (24h trend) 69 (-1) 100 (+4) 61
Wind 20ft/early(mph) NE 10 NE 11 NE 13
Wind 20ft/late(mph) NE 10 NE 11 NE 13
Mixing Hgt(ft-agl/msl)3540 4000
Transport Wnd (mph) NE 9 NE 14
Vent Rate (kt-ft) 28320 48000
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-200845-
Luquillo Mountain Range-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 70 60
Temp (24h trend) 79 (+1) 66 (-3) 81
RH % (24h trend) 76 (-1) 100 (+1) 68
Wind 20ft/early(mph) NE 8 NE 8 NE 11
Wind 20ft/late(mph) NE 8 NE 8 NE 11
Mixing Hgt(ft-agl/msl)3060 3610
Transport Wnd (mph) E 9 N 13
Vent Rate (kt-ft) 24480 39710
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-200845-
Central Mountain Range-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 80 70 60
Temp (24h trend) 82 (+3) 64 (-6) 82
RH % (24h trend) 71 (-7) 100 (+5) 66
Wind 20ft/early(mph) NE 13 NE 14 NE 18
Wind 20ft/late(mph) NE 13 NE 14 NE 18
Mixing Hgt(ft-agl/msl)4110 4800
Transport Wnd (mph) NE 9 NE 15
Vent Rate (kt-ft) 32880 62400
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-200845-
Cayey Mountain Range-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 70 50 70
Temp (24h trend) 80 (0) 66 (-4) 81
RH % (24h trend) 75 (-1) 100 (+1) 68
Wind 20ft/early(mph) NE 9 NE 8 NE 11
Wind 20ft/late(mph) NE 9 NE 8 NE 11
Mixing Hgt(ft-agl/msl)3690 4470
Transport Wnd (mph) NE 9 N 13
Vent Rate (kt-ft) 29520 49170
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-200845-
Vieques-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 86 (0) 73 (0) 87
RH % (24h trend) 62 (-2) 92 (-5) 57
Wind 20ft/early(mph) NE 11 NE 14 G18 NE 14 G19
Wind 20ft/late(mph) NE 11 NE 14 G18 NE 14 G19
Mixing Hgt(ft-agl/msl)2580 3360
Transport Wnd (mph) E 14 NE 18
Vent Rate (kt-ft) 30960 53760
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-200845-
Culebra-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 60 60
Temp (24h trend) 87 (+2) 73 (-2) 89
RH % (24h trend) 62 (-6) 94 (0) 56
Wind 20ft/early(mph) NE 10 NE 16 G20 NE 14 G19
Wind 20ft/late(mph) NE 10 NE 16 G20 NE 14 G19
Mixing Hgt(ft-agl/msl)2600 3350
Transport Wnd (mph) NE 12 NE 18
Vent Rate (kt-ft) 26000 53600
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-200845-
Southwest Coastal Plains and Mona Island-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 50 70
Temp (24h trend) 90 (+2) 68 (-6) 90
RH % (24h trend) 50 (-6) 96 (+11) 44
Wind 20ft/early(mph) E 19 G22 NE 20 G23 NE 21 G25
Wind 20ft/late(mph) E 19 G22 NE 20 G23 NE 21 G25
Mixing Hgt(ft-agl/msl)4610 5800
Transport Wnd (mph) E 7 NE 10
Vent Rate (kt-ft) 27660 52200
Dispersion 5 5
DSI 5 3 5
RH Recovery Excellent
Remarks...None.
$$
VIZ001-200845-
Saint Thomas and Saint John-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Mcldy
Precip Type Tstms Showers Tstms
Chance Precip (%) 70 40 60
Temp (24h trend) 86 (+3) 71 (-3) 90
RH % (24h trend) 64 (-6) 97 (+3) 54
Wind 20ft/early(mph) E 11 NE 16 G19 NE 14 G17
Wind 20ft/late(mph) E 11 NE 16 G19 NE 14 G17
Mixing Hgt(ft-agl/msl)2830 3340
Transport Wnd (mph) E 14 NE 17
Vent Rate (kt-ft) 33960 50100
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-200845-
St Croix-
442 AM AST Sat Apr 19 2025
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 60 50 50
Temp (24h trend) 86 (+3) 72 (-3) 86
RH % (24h trend) 64 (-10) 99 (+7) 63
Wind 20ft/early(mph) E 11 NE 11 NE 12
Wind 20ft/late(mph) E 11 NE 11 NE 12
Mixing Hgt(ft-agl/msl)4150 3930
Transport Wnd (mph) E 14 NE 14
Vent Rate (kt-ft) 49800 47160
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$