


Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
476 FNCA52 TJSJ 160935 FWFSJU Fire Weather Planning Forecast for Puerto Rico National Weather Service San Juan PR 535 AM AST Thu Oct 16 2025 .DISCUSSION... Like yesterday, there is LOW fire weather threat across the vulnerable areas. During the overnight hours showers and thunderstorms filtered across the all coastal and fire hot spot increasing moisture/rainfall activity today across the area. PRZ014-170945- Southeast Coastal Plains- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Tstms Tstms Chance Precip (%) 40 40 60 Temp (24h trend) 88 (-1) 74 (-1) 89 RH % (24h trend) 66 (+7) 95 (+1) 65 Wind 20ft/early(mph) SW 14 G19 W 9 SW 12 G17 Wind 20ft/late(mph) SW 14 G19 W 9 SW 12 G17 Mixing Hgt(ft-agl/msl)4600 4840 Transport Wnd (mph) SW 14 SW 10 Vent Rate (kt-ft) 55200 43560 Dispersion 5 5 DSI 6 2 5 RH Recovery Excellent Remarks...None. $$ PRZ015-170945- Southern Hills- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Mcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 50 50 70 Temp (24h trend) 84 (0) 70 (-3) 85 RH % (24h trend) 69 (0) 98 (+4) 69 Wind 20ft/early(mph) SW 12 SW 10 SW 10 Wind 20ft/late(mph) SW 12 SW 10 SW 10 Mixing Hgt(ft-agl/msl)4870 5270 Transport Wnd (mph) SW 15 SW 12 Vent Rate (kt-ft) 63310 52700 Dispersion 5 5 DSI 5 2 5 RH Recovery Excellent Remarks...None. $$ PRZ016-170945- North Coastal Plains- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 80 20 90 Temp (24h trend) 90 (-1) 73 (-2) 89 RH % (24h trend) 63 (0) 97 (+3) 65 Wind 20ft/early(mph) SW 14 G17 SW 11 W 12 Wind 20ft/late(mph) SW 14 G17 SW 11 W 12 Mixing Hgt(ft-agl/msl)5270 4860 Transport Wnd (mph) SW 13 SW 8 Vent Rate (kt-ft) 57970 34020 Dispersion 5 5 DSI 6 3 5 RH Recovery Excellent Remarks...None. $$ PRZ017-170945- Northern Hills- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Mcldy Precip Type Tstms Showers Tstms Chance Precip (%) 60 40 90 Temp (24h trend) 87 (-1) 72 (-1) 87 RH % (24h trend) 66 (+2) 98 (+3) 66 Wind 20ft/early(mph) SW 14 SW 11 SW 12 Wind 20ft/late(mph) SW 14 SW 11 SW 12 Mixing Hgt(ft-agl/msl)5480 5470 Transport Wnd (mph) SW 16 SW 12 Vent Rate (kt-ft) 76720 54700 Dispersion 5 5 DSI 5 3 5 RH Recovery Excellent Remarks...None. $$ PRZ018-170945- West Coast- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Mcldy Mcldy Pcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 60 70 60 Temp (24h trend) 87 (-3) 73 (-2) 88 RH % (24h trend) 70 (+3) 99 (+4) 70 Wind 20ft/early(mph) SW 13 S 11 SW 11 Wind 20ft/late(mph) SW 13 S 11 SW 11 Mixing Hgt(ft-agl/msl)4500 4550 Transport Wnd (mph) SW 16 S 12 Vent Rate (kt-ft) 63000 45500 Dispersion 5 5 DSI 6 4 5 RH Recovery Excellent Remarks...None. $$ PRZ019-170945- Eastern Interior- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 80 20 70 Temp (24h trend) 87 (-1) 72 (-1) 88 RH % (24h trend) 65 (0) 99 (+3) 66 Wind 20ft/early(mph) SW 13 SW 11 SW 11 Wind 20ft/late(mph) SW 13 SW 11 SW 11 Mixing Hgt(ft-agl/msl)5330 5690 Transport Wnd (mph) SW 14 SW 12 Vent Rate (kt-ft) 63960 56900 Dispersion 5 5 DSI 6 2 5 RH Recovery Excellent Remarks...None. $$ PRZ022-170945- Luquillo Mountain Range- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Mclear Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 90 10 70 Temp (24h trend) 84 (+2) 69 (-2) 84 RH % (24h trend) 69 (-4) 100 (+1) 71 Wind 20ft/early(mph) SW 9 SW 5 SW 8 Wind 20ft/late(mph) SW 9 SW 5 SW 8 Mixing Hgt(ft-agl/msl)4780 4770 Transport Wnd (mph) SW 12 SW 12 Vent Rate (kt-ft) 47800 47700 Dispersion 5 5 DSI 6 1 5 RH Recovery Excellent Remarks...None. $$ PRZ023-170945- Central Mountain Range- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Mcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 60 50 80 Temp (24h trend) 84 (+1) 69 (-3) 84 RH % (24h trend) 72 (+2) 98 (+3) 69 Wind 20ft/early(mph) SW 13 SW 10 SW 10 Wind 20ft/late(mph) SW 13 SW 10 SW 10 Mixing Hgt(ft-agl/msl)5360 5840 Transport Wnd (mph) SW 16 SW 13 Vent Rate (kt-ft) 75040 64240 Dispersion 5 5 DSI 5 2 5 RH Recovery Excellent Remarks...None. $$ PRZ024-170945- Cayey Mountain Range- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 60 30 50 Temp (24h trend) 84 (+1) 70 (-1) 83 RH % (24h trend) 71 (0) 100 (+1) 71 Wind 20ft/early(mph) SW 11 SW 8 SW 10 Wind 20ft/late(mph) SW 11 SW 8 SW 10 Mixing Hgt(ft-agl/msl)4760 5070 Transport Wnd (mph) SW 15 SW 13 Vent Rate (kt-ft) 61880 55770 Dispersion 5 5 DSI 6 2 5 RH Recovery Excellent Remarks...None. $$ PRZ025-170945- Vieques- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Showers Chance Precip (%) 50 20 40 Temp (24h trend) 88 (0) 76 (0) 88 RH % (24h trend) 64 (+1) 98 (+3) 67 Wind 20ft/early(mph) SW 16 G20 SW 13 SW 13 G17 Wind 20ft/late(mph) SW 16 G20 SW 13 SW 13 G17 Mixing Hgt(ft-agl/msl)3480 3250 Transport Wnd (mph) SW 20 SW 15 Vent Rate (kt-ft) 59160 42250 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ PRZ026-170945- Culebra- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Mclear Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 60 10 50 Temp (24h trend) 90 (0) 76 (-2) 90 RH % (24h trend) 61 (-3) 98 (+4) 64 Wind 20ft/early(mph) SW 16 G20 SW 13 G18 SW 13 G17 Wind 20ft/late(mph) SW 16 G20 SW 13 G18 SW 13 G17 Mixing Hgt(ft-agl/msl)3470 3160 Transport Wnd (mph) SW 20 SW 16 Vent Rate (kt-ft) 58990 44240 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ PRZ027-170945- Southwest Coastal Plains and Mona Island- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Mcldy Mcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 50 70 60 Temp (24h trend) 89 (-1) 75 (-2) 89 RH % (24h trend) 65 (+8) 95 (+6) 64 Wind 20ft/early(mph) SW 16 G20 SW 11 SW 12 Wind 20ft/late(mph) SW 16 G20 SW 11 SW 12 Mixing Hgt(ft-agl/msl)4850 5050 Transport Wnd (mph) SW 14 SW 10 Vent Rate (kt-ft) 58200 45450 Dispersion 5 5 DSI 5 2 5 RH Recovery Excellent Remarks...None. $$ VIZ001-170945- Saint Thomas and Saint John- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Mcldy Pcldy Pcldy Precip Type Tstms Tstms Tstms Chance Precip (%) 60 50 60 Temp (24h trend) 85 (-1) 75 (-3) 86 RH % (24h trend) 69 (0) 100 (+6) 71 Wind 20ft/early(mph) SW 16 G19 SW 13 SW 13 G17 Wind 20ft/late(mph) SW 16 G19 SW 13 SW 13 G17 Mixing Hgt(ft-agl/msl)4110 3300 Transport Wnd (mph) SW 20 SW 16 Vent Rate (kt-ft) 69870 46200 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ VIZ002-170945- St Croix- 535 AM AST Thu Oct 16 2025 Today Tonight Fri Cloud Cover Pcldy Pcldy Pcldy Precip Type Tstms Showers Tstms Chance Precip (%) 50 40 50 Temp (24h trend) 86 (-2) 75 (-2) 88 RH % (24h trend) 70 (+3) 100 (+5) 70 Wind 20ft/early(mph) SW 13 G17 SW 11 SW 12 Wind 20ft/late(mph) SW 13 G17 SW 11 SW 12 Mixing Hgt(ft-agl/msl)4550 3950 Transport Wnd (mph) SW 18 S 16 Vent Rate (kt-ft) 72800 55300 Dispersion 5 5 DSI 6 6 6 RH Recovery Excellent Remarks...None. $$ $$