Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
949
FNCA52 TJSJ 060755
FWFSJU
Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
355 AM AST Sun Apr 6 2025
.DISCUSSION...
Similar conditions to yesterday should prevail today. Winds will
remain between 15 - 20 mph, with higher gusts around 26 - 28 mph.
The latest KDBI values remain well above fire weather thresholds
in Guanica (637), while Cabo Rojo and Maricao slightly increased
(370 - 379). Soils in the southern coastal plains of Puerto Rico
continue with precipitation deficit and dry soils, contributing to
rapid fire spread. As a dry air mass filters into the region
today and relative humidities drop near 40 %, elevated fire
danger conditions are expected along the southern coastal plains
of Puerto Rico. Therefore, a Fire Danger Statement (RFDSJU) will
be issued for portions of southern Puerto Rico.
PRZ014-070800-
Southeast Coastal Plains-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Mclear
Precip Type Showers None None
Chance Precip (%) 10 0 0
Temp (24h trend) 89 (+2) 68 (-2) 88
RH % (24h trend) 41 (-8) 83 (+1) 42
Wind 20ft/early(mph) E 20 G26 NE 16 G20 SE 16 G21
Wind 20ft/late(mph) E 20 G26 NE 16 G20 SE 16 G21
Mixing Hgt(ft-agl/msl)5550 5480
Transport Wnd (mph) E 16 E 15
Vent Rate (kt-ft) 77700 71240
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ015-070800-
Southern Hills-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 0
Temp (24h trend) 84 (+2) 63 (-5) 85
RH % (24h trend) 52 (-9) 93 (+4) 51
Wind 20ft/early(mph) E 14 NE 11 SE 12
Wind 20ft/late(mph) E 14 NE 11 SE 12
Mixing Hgt(ft-agl/msl)6400 6670
Transport Wnd (mph) E 13 E 13
Vent Rate (kt-ft) 70400 73370
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ016-070800-
North Coastal Plains-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 0 20 30
Temp (24h trend) 86 (+2) 68 (-3) 87
RH % (24h trend) 56 (-10) 94 (+3) 55
Wind 20ft/early(mph) E 19 G22 E 17 G19 E 20
Wind 20ft/late(mph) E 19 G22 E 17 G19 E 20
Mixing Hgt(ft-agl/msl)5010 5740
Transport Wnd (mph) E 17 E 16
Vent Rate (kt-ft) 75150 80360
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ017-070800-
Northern Hills-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 10 10 10
Temp (24h trend) 85 (+3) 66 (-2) 87
RH % (24h trend) 57 (-9) 93 (-3) 53
Wind 20ft/early(mph) NE 18 E 14 E 17
Wind 20ft/late(mph) NE 18 E 14 E 17
Mixing Hgt(ft-agl/msl)6410 7410
Transport Wnd (mph) E 13 E 12
Vent Rate (kt-ft) 70510 74100
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ018-070800-
West Coast-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Mclear
Precip Type Tstms Tstms Showers
Chance Precip (%) 60 50 10
Temp (24h trend) 88 (+1) 64 (-3) 87
RH % (24h trend) 54 (-5) 94 (0) 51
Wind 20ft/early(mph) E 14 E 17 SE 13
Wind 20ft/late(mph) E 14 E 17 SE 13
Mixing Hgt(ft-agl/msl)5710 5650
Transport Wnd (mph) E 9 E 10
Vent Rate (kt-ft) 45680 50850
Dispersion 5 5
DSI 6 4 6
RH Recovery Excellent
Remarks...None.
$$
PRZ019-070800-
Eastern Interior-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 20 30
Temp (24h trend) 84 (+2) 66 (-3) 85
RH % (24h trend) 55 (-9) 93 (+3) 55
Wind 20ft/early(mph) E 13 E 12 E 12
Wind 20ft/late(mph) E 13 E 12 E 12
Mixing Hgt(ft-agl/msl)5930 6850
Transport Wnd (mph) E 14 E 14
Vent Rate (kt-ft) 71160 82200
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ022-070800-
Luquillo Mountain Range-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 30 50
Temp (24h trend) 79 (+2) 64 (-4) 79
RH % (24h trend) 63 (-8) 95 (+3) 65
Wind 20ft/early(mph) E 12 E 10 E 11
Wind 20ft/late(mph) E 12 E 10 E 11
Mixing Hgt(ft-agl/msl)4760 4830
Transport Wnd (mph) E 15 E 16
Vent Rate (kt-ft) 61880 67620
Dispersion 5 5
DSI 6 5 6
RH Recovery Excellent
Remarks...None.
$$
PRZ023-070800-
Central Mountain Range-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 40 20 0
Temp (24h trend) 83 (+4) 61 (-4) 83
RH % (24h trend) 57 (-9) 96 (-1) 52
Wind 20ft/early(mph) E 12 E 11 E 10
Wind 20ft/late(mph) E 12 E 11 E 10
Mixing Hgt(ft-agl/msl)7930 8490
Transport Wnd (mph) E 7 E 8
Vent Rate (kt-ft) 47580 59430
Dispersion 5 5
DSI 6 2 6
RH Recovery Excellent
Remarks...None.
$$
PRZ024-070800-
Cayey Mountain Range-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Mclear
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 30
Temp (24h trend) 80 (+2) 64 (-3) 80
RH % (24h trend) 60 (-8) 95 (0) 61
Wind 20ft/early(mph) E 12 E 10 E 10
Wind 20ft/late(mph) E 12 E 10 E 10
Mixing Hgt(ft-agl/msl)5210 5600
Transport Wnd (mph) E 16 E 14
Vent Rate (kt-ft) 72940 67200
Dispersion 5 5
DSI 6 3 6
RH Recovery Excellent
Remarks...None.
$$
PRZ025-070800-
Vieques-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 20 10 40
Temp (24h trend) 85 (0) 71 (-2) 85
RH % (24h trend) 55 (-5) 83 (+1) 58
Wind 20ft/early(mph) E 14 G19 E 14 G19 E 13 G17
Wind 20ft/late(mph) E 14 G19 E 14 G19 E 13 G17
Mixing Hgt(ft-agl/msl)4270 4160
Transport Wnd (mph) E 20 E 20
Vent Rate (kt-ft) 72590 70720
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ026-070800-
Culebra-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers Showers Showers
Chance Precip (%) 30 10 50
Temp (24h trend) 86 (+1) 73 (-2) 86
RH % (24h trend) 54 (-8) 85 (+4) 58
Wind 20ft/early(mph) E 14 G19 E 14 G19 E 14 G18
Wind 20ft/late(mph) E 14 G19 E 14 G19 E 14 G18
Mixing Hgt(ft-agl/msl)4350 4150
Transport Wnd (mph) E 20 E 20
Vent Rate (kt-ft) 73950 70550
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
PRZ027-070800-
Southwest Coastal Plains and Mona Island-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Clear
Precip Type Showers Showers None
Chance Precip (%) 30 40 0
Temp (24h trend) 90 (+2) 67 (-3) 89
RH % (24h trend) 40 (-8) 87 (-1) 39
Wind 20ft/early(mph) E 21 G28 E 13 SE 20 G26
Wind 20ft/late(mph) E 21 G28 E 13 SE 20 G26
Mixing Hgt(ft-agl/msl)5720 5290
Transport Wnd (mph) E 13 E 18
Vent Rate (kt-ft) 62920 84640
Dispersion 5 5
DSI 5 4 6
RH Recovery Excellent
Remarks...None.
$$
VIZ001-070800-
Saint Thomas and Saint John-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 10 0 40
Temp (24h trend) 85 (0) 72 (-2) 86
RH % (24h trend) 54 (-6) 87 (+5) 58
Wind 20ft/early(mph) E 14 G18 E 16 G20 E 16 G19
Wind 20ft/late(mph) E 14 G18 E 16 G20 E 16 G19
Mixing Hgt(ft-agl/msl)4320 4010
Transport Wnd (mph) E 20 E 21
Vent Rate (kt-ft) 73440 72180
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
VIZ002-070800-
St Croix-
355 AM AST Sun Apr 6 2025
Today Tonight Mon
Cloud Cover Mclear Mclear Pcldy
Precip Type Showers None Showers
Chance Precip (%) 0 0 30
Temp (24h trend) 85 (0) 72 (-2) 85
RH % (24h trend) 56 (-6) 82 (-2) 58
Wind 20ft/early(mph) E 16 G19 E 14 G18 E 13 G17
Wind 20ft/late(mph) E 16 G19 E 14 G18 E 13 G17
Mixing Hgt(ft-agl/msl)4490 4850
Transport Wnd (mph) E 20 E 17
Vent Rate (kt-ft) 76330 72750
Dispersion 5 5
DSI 6 6 6
RH Recovery Excellent
Remarks...None.
$$
$$