Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR

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FNCA52 TJSJ 030805
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
405 AM AST Thu Jul 3 2025

.DISCUSSION...

Cloudiness and passing showers will result in RH values stay above
the fire danger thresholds for today. Winds will remain from the
E-SE up to 15 knots during the late morning hours into the
afternoon hours. Although soils conditions at the surface southern
plains remain under critical conditions, today conditions will not
favor fire danger conditions.

PRZ014-040815-
Southeast Coastal Plains-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Pcldy
Precip Type           Showers      Showers      Showers
Chance Precip (%)     20           10           40
Temp (24h trend)      91 (+2)      75 (0)       91
RH % (24h trend)      54 (-7)      88 (-3)      53
Wind 20ft/early(mph)  SE 14 G19    E 11         SE 17 G22
Wind 20ft/late(mph)   SE 14 G19    E 11         SE 17 G22
Mixing Hgt(ft-agl/msl)4890                      4770
Transport Wnd (mph)   SE 14                     E 16
Vent Rate (kt-ft)     58680                     66780
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-040815-
Southern Hills-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Pcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     10           10           50
Temp (24h trend)      87 (+3)      71 (-1)      88
RH % (24h trend)      60 (-7)      95 (+1)      60
Wind 20ft/early(mph)  SE 12        E  8         SE 12
Wind 20ft/late(mph)   SE 12        E  8         SE 12
Mixing Hgt(ft-agl/msl)5670                      5760
Transport Wnd (mph)   SE 14                     E 15
Vent Rate (kt-ft)     68040                     74880
Dispersion            5                         5
DSI                   6            2            5
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-040815-
North Coastal Plains-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     40           10           60
Temp (24h trend)      90 (+1)      75 (0)       90
RH % (24h trend)      60 (-5)      93 (-3)      64
Wind 20ft/early(mph)  E 17 G19     E 11         E 17 G20
Wind 20ft/late(mph)   E 17 G19     E 11         E 17 G20
Mixing Hgt(ft-agl/msl)5150                      4770
Transport Wnd (mph)   E 13                      E 15
Vent Rate (kt-ft)     56650                     62010
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-040815-
Northern Hills-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     50           20           60
Temp (24h trend)      88 (+1)      70 (-3)      88
RH % (24h trend)      62 (-2)      96 (-1)      64
Wind 20ft/early(mph)  E 13         SE  9        E 14
Wind 20ft/late(mph)   E 13         SE  9        E 14
Mixing Hgt(ft-agl/msl)6080                      5910
Transport Wnd (mph)   SE 10                     E 10
Vent Rate (kt-ft)     54720                     53190
Dispersion            5                         5
DSI                   6            2            5
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-040815-
West Coast-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Pcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     30           30           40
Temp (24h trend)      91 (+2)      72 (0)       92
RH % (24h trend)      59 (-3)      97 (0)       59
Wind 20ft/early(mph)  E 16         SE 10        E 13
Wind 20ft/late(mph)   E 16         SE 10        E 13
Mixing Hgt(ft-agl/msl)4800                      4400
Transport Wnd (mph)   SE 12                     E  8
Vent Rate (kt-ft)     48000                     30800
Dispersion            5                         5
DSI                   6            4            5
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-040815-
Eastern Interior-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     30           30           60
Temp (24h trend)      88 (+3)      73 (0)       88
RH % (24h trend)      60 (-7)      94 (-3)      66
Wind 20ft/early(mph)  SE 11        SE 10        E 12
Wind 20ft/late(mph)   SE 11        SE 10        E 12
Mixing Hgt(ft-agl/msl)6180                      5960
Transport Wnd (mph)   SE 13                     E 15
Vent Rate (kt-ft)     67980                     77480
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-040815-
Luquillo Mountain Range-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     40           40           70
Temp (24h trend)      84 (+5)      69 (-1)      84
RH % (24h trend)      68 (-10)     100 (0)      73
Wind 20ft/early(mph)  SE 10        SE  9        E 11
Wind 20ft/late(mph)   SE 10        SE  9        E 11
Mixing Hgt(ft-agl/msl)4460                      3510
Transport Wnd (mph)   SE 13                     E 16
Vent Rate (kt-ft)     49060                     49140
Dispersion            5                         5
DSI                   6            4            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-040815-
Central Mountain Range-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Pcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     30           30           50
Temp (24h trend)      86 (+4)      68 (-2)      87
RH % (24h trend)      63 (-5)      97 (-1)      64
Wind 20ft/early(mph)  SE  9        SE  5        SE 10
Wind 20ft/late(mph)   SE  9        SE  5        SE 10
Mixing Hgt(ft-agl/msl)6780                      6780
Transport Wnd (mph)   SE 10                     E 10
Vent Rate (kt-ft)     61020                     61020
Dispersion            5                         5
DSI                   5            1            5
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-040815-
Cayey Mountain Range-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     30           40           60
Temp (24h trend)      83 (+3)      70 (0)       84
RH % (24h trend)      67 (-8)      100 (0)      71
Wind 20ft/early(mph)  SE 10        E  8         E 11
Wind 20ft/late(mph)   SE 10        E  8         E 11
Mixing Hgt(ft-agl/msl)5040                      4440
Transport Wnd (mph)   SE 13                     E 16
Vent Rate (kt-ft)     55440                     62160
Dispersion            5                         5
DSI                   6            3            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-040815-
Vieques-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     40           30           60
Temp (24h trend)      89 (+1)      76 (+1)      89
RH % (24h trend)      56 (-6)      91 (-4)      63
Wind 20ft/early(mph)  SE 11        E 11         E 14 G17
Wind 20ft/late(mph)   SE 11        E 11         E 14 G17
Mixing Hgt(ft-agl/msl)3210                      2580
Transport Wnd (mph)   SE 14                     E 20
Vent Rate (kt-ft)     38520                     43860
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-040815-
Culebra-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     40           30           60
Temp (24h trend)      90 (+2)      77 (0)       90
RH % (24h trend)      59 (-8)      92 (-2)      65
Wind 20ft/early(mph)  SE 12        E 11         E 14 G18
Wind 20ft/late(mph)   SE 12        E 11         E 14 G18
Mixing Hgt(ft-agl/msl)3160                      2580
Transport Wnd (mph)   SE 13                     E 18
Vent Rate (kt-ft)     34760                     41280
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-040815-
Southwest Coastal Plains and Mona Island-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Clear        Mclear
Precip Type           Showers      None         Showers
Chance Precip (%)     10           0            30
Temp (24h trend)      91 (+2)      75 (0)       93
RH % (24h trend)      55 (-5)      87 (0)       49
Wind 20ft/early(mph)  SE 20 G26    E 13 G17     SE 20 G26
Wind 20ft/late(mph)   SE 20 G26    E 13 G17     SE 20 G26
Mixing Hgt(ft-agl/msl)4960                      4850
Transport Wnd (mph)   SE 18                     E 16
Vent Rate (kt-ft)     79360                     67900
Dispersion            5                         5
DSI                   6            5            6
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-040815-
Saint Thomas and Saint John-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Pcldy
Precip Type           Showers      Showers      Showers
Chance Precip (%)     20           20           40
Temp (24h trend)      86 (+1)      74 (-3)      86
RH % (24h trend)      66 (-5)      96 (+3)      72
Wind 20ft/early(mph)  SE 13        E 14 G18     E 14 G19
Wind 20ft/late(mph)   SE 13        E 14 G18     E 14 G19
Mixing Hgt(ft-agl/msl)3130                      2600
Transport Wnd (mph)   SE 15                     E 20
Vent Rate (kt-ft)     40690                     44200
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-040815-
St Croix-
405 AM AST Thu Jul 3 2025

                      Today        Tonight      Fri

Cloud Cover           Clear        Mclear       Pcldy
Precip Type           None         Showers      Tstms
Chance Precip (%)     0            20           50
Temp (24h trend)      88 (+2)      75 (-2)      88
RH % (24h trend)      59 (-8)      95 (+5)      66
Wind 20ft/early(mph)  SE 12        E 12         E 16 G19
Wind 20ft/late(mph)   SE 12        E 12         E 16 G19
Mixing Hgt(ft-agl/msl)4340                      3620
Transport Wnd (mph)   SE 16                     E 21
Vent Rate (kt-ft)     60760                     65160
Dispersion            5                         5
DSI                   6            6            6
RH Recovery                        Excellent

Remarks...None.

$$


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