


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
809 FNCA52 TJSJ 130929 FWFSJU Fire Weather Planning Forecast for Puerto Rico National Weather Service San Juan PR 529 AM AST Mon Oct 13 2025 .DISCUSSION... Today, easterly winds between around 10 to 15 mph with locally higher values and gusts. Minimum relative humidity values are expected to decrease a little compared to the last few days, but should remain close or above the fire critical threshold. Expect a typical weather pattern with afternoon convection confined across western Puerto Rico. The fire danger threat is expected to remain low today, however we will continue to monitor conditions. Similar conditions are expected tomorrow, then moisture will increase from mid week onward further decreasing the fire risk. PRZ014-140930- Southeast Coastal Plains- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 20 30 40 Temp (24h trend) 91 (+3) 74 (-2) 91 RH % (24h trend) 56 (-12) 94 (+4) 61 Wind 20ft/early(mph) E 14 G19 NE 11 SE 13 G18 Wind 20ft/late(mph) E 14 G19 NE 11 SE 13 G18 Mixing Hgt(ft-agl/msl)4600 4320 Transport Wnd (mph) E 15 E 12 Vent Rate (kt-ft) 59800 43200 Dispersion 5 5 DSI 6 3 6 RH Recovery Excellent Remarks...None. $$ PRZ015-140930- Southern Hills- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Tstms Chance Precip (%) 30 30 60 Temp (24h trend) 88 (+5) 70 (-3) 88 RH % (24h trend) 58 (-13) 98 (+6) 62 Wind 20ft/early(mph) E 11 NE 11 SE 10 Wind 20ft/late(mph) E 11 NE 11 SE 10 Mixing Hgt(ft-agl/msl)5180 4910 Transport Wnd (mph) E 15 E 12 Vent Rate (kt-ft) 67340 49100 Dispersion 5 5 DSI 5 3 5 RH Recovery Excellent Remarks...None. $$ PRZ016-140930- North Coastal Plains- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Tstms Chance Precip (%) 40 40 60 Temp (24h trend) 91 (+1) 74 (-1) 91 RH % (24h trend) 60 (-7) 98 (+5) 63 Wind 20ft/early(mph) E 17 G19 E 14 G17 E 12 Wind 20ft/late(mph) E 17 G19 E 14 G17 E 12 Mixing Hgt(ft-agl/msl)4830 4680 Transport Wnd (mph) E 14 E 12 Vent Rate (kt-ft) 57960 46800 Dispersion 5 5 DSI 6 5 6 RH Recovery Excellent Remarks...None. $$ PRZ017-140930- Northern Hills- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 50 30 80 Temp (24h trend) 89 (+2) 71 (-2) 89 RH % (24h trend) 61 (-6) 98 (+3) 64 Wind 20ft/early(mph) E 14 E 13 E 10 Wind 20ft/late(mph) E 14 E 13 E 10 Mixing Hgt(ft-agl/msl)5330 5140 Transport Wnd (mph) E 12 E 9 Vent Rate (kt-ft) 53300 41120 Dispersion 5 5 DSI 5 3 5 RH Recovery Excellent Remarks...None. $$ PRZ018-140930- West Coast- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 80 60 70 Temp (24h trend) 92 (+3) 72 (-2) 91 RH % (24h trend) 58 (-11) 97 (+3) 63 Wind 20ft/early(mph) E 13 E 10 SE 10 Wind 20ft/late(mph) E 13 E 10 SE 10 Mixing Hgt(ft-agl/msl)5000 4520 Transport Wnd (mph) SE 10 SE 8 Vent Rate (kt-ft) 45000 31640 Dispersion 5 5 DSI 5 3 5 RH Recovery Excellent Remarks...None. $$ PRZ019-140930- Eastern Interior- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Tstms Chance Precip (%) 40 50 50 Temp (24h trend) 89 (+3) 71 (-3) 90 RH % (24h trend) 61 (-7) 100 (+6) 63 Wind 20ft/early(mph) E 12 E 11 E 10 Wind 20ft/late(mph) E 12 E 11 E 10 Mixing Hgt(ft-agl/msl)4880 4990 Transport Wnd (mph) E 15 SE 10 Vent Rate (kt-ft) 63440 44910 Dispersion 5 5 DSI 6 3 5 RH Recovery Excellent Remarks...None. $$ PRZ022-140930- Luquillo Mountain Range- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 50 50 50 Temp (24h trend) 85 (+4) 70 (-2) 86 RH % (24h trend) 66 (-10) 100 (+3) 68 Wind 20ft/early(mph) E 11 E 10 SE 10 Wind 20ft/late(mph) E 11 E 10 SE 10 Mixing Hgt(ft-agl/msl)4450 4270 Transport Wnd (mph) E 14 E 12 Vent Rate (kt-ft) 53400 42700 Dispersion 5 5 DSI 6 4 6 RH Recovery Excellent Remarks...None. $$ PRZ023-140930- Central Mountain Range- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 70 40 90 Temp (24h trend) 87 (+5) 68 (-3) 87 RH % (24h trend) 59 (-13) 98 (+4) 65 Wind 20ft/early(mph) E 9 E 9 SE 8 Wind 20ft/late(mph) E 9 E 9 SE 8 Mixing Hgt(ft-agl/msl)6130 5600 Transport Wnd (mph) E 10 SE 8 Vent Rate (kt-ft) 55170 39200 Dispersion 5 5 DSI 5 2 5 RH Recovery Excellent Remarks...None. $$ PRZ024-140930- Cayey Mountain Range- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 40 50 40 Temp (24h trend) 85 (+4) 70 (-2) 85 RH % (24h trend) 66 (-8) 100 (+3) 68 Wind 20ft/early(mph) E 10 NE 10 SE 9 Wind 20ft/late(mph) E 10 NE 10 SE 9 Mixing Hgt(ft-agl/msl)4770 4550 Transport Wnd (mph) E 15 E 12 Vent Rate (kt-ft) 62010 45500 Dispersion 5 5 DSI 6 3 6 RH Recovery Excellent Remarks...None. $$ PRZ025-140930- Vieques- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 40 50 40 Temp (24h trend) 90 (+2) 76 (-1) 90 RH % (24h trend) 59 (-5) 97 (+8) 61 Wind 20ft/early(mph) E 14 G18 E 14 G17 E 10 Wind 20ft/late(mph) E 14 G18 E 14 G17 E 10 Mixing Hgt(ft-agl/msl)3640 3410 Transport Wnd (mph) E 20 SE 10 Vent Rate (kt-ft) 61880 30690 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ PRZ026-140930- Culebra- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 40 50 40 Temp (24h trend) 92 (+3) 77 (-2) 92 RH % (24h trend) 57 (-9) 96 (+6) 59 Wind 20ft/early(mph) E 14 G18 E 14 G19 E 11 Wind 20ft/late(mph) E 14 G18 E 14 G19 E 11 Mixing Hgt(ft-agl/msl)3900 3450 Transport Wnd (mph) E 20 E 13 Vent Rate (kt-ft) 66300 37950 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ PRZ027-140930- Southwest Coastal Plains and Mona Island- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Mclear Mclear Pcldy Precip Type Showers Showers Showers Chance Precip (%) 20 40 30 Temp (24h trend) 92 (+3) 74 (-2) 93 RH % (24h trend) 55 (-10) 92 (+4) 58 Wind 20ft/early(mph) E 18 G24 E 13 G17 SE 14 G20 Wind 20ft/late(mph) E 18 G24 E 13 G17 SE 14 G20 Mixing Hgt(ft-agl/msl)5050 4980 Transport Wnd (mph) E 17 SE 13 Vent Rate (kt-ft) 75750 54780 Dispersion 5 5 DSI 6 3 5 RH Recovery Excellent Remarks...None. $$ VIZ001-140930- Saint Thomas and Saint John- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 40 40 40 Temp (24h trend) 87 (+1) 76 (-3) 87 RH % (24h trend) 63 (-7) 99 (+9) 65 Wind 20ft/early(mph) E 13 G17 E 16 G20 E 11 Wind 20ft/late(mph) E 13 G17 E 16 G20 E 11 Mixing Hgt(ft-agl/msl)3660 3420 Transport Wnd (mph) E 20 E 13 Vent Rate (kt-ft) 62220 37620 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ VIZ002-140930- St Croix- 529 AM AST Mon Oct 13 2025 Today Tonight Tue Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Precip (%) 40 50 40 Temp (24h trend) 90 (+3) 76 (-3) 89 RH % (24h trend) 63 (-6) 98 (+9) 63 Wind 20ft/early(mph) E 13 G17 E 13 G17 E 11 Wind 20ft/late(mph) E 13 G17 E 13 G17 E 11 Mixing Hgt(ft-agl/msl)4000 4190 Transport Wnd (mph) E 17 E 13 Vent Rate (kt-ft) 60000 46090 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ $$