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

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623
FNCA52 TJSJ 250945
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
545 AM AST Wed Sep 25 2024

.DISCUSSION...

The RH values across the southern, southwestern and parts of the
north coast of Puerto Rico will drop to as low as the mid 50s,
but KBDI values will remain much below critical thresholds,
except for Guanica has now reached 556 due to persistent sunny
skies and high temperatures. Fortunately 10 hour fuel moistures
range from 15 to 28. Winds will be 10 to 15 mph with some higher
gusts today. There is a continued risk of thunderstorms and some
may contain frequent lightning, very gusty winds and torrential
rain, but nevertheless, the risk of dangerous fire behavior will
remain low through the week.


PRZ014-260945-
Southeast Coastal Plains-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     60           30           40
Temp (24h trend)      94 (+2)      75 (-3)      94
RH % (24h trend)      56 (-5)      96 (+6)      56
Wind 20ft/early(mph)  E 14         E 12         E 20 G26
Wind 20ft/late(mph)   E 14         E 12         E 20 G26
Mixing Hgt(ft-agl/msl)4890                      5130
Transport Wnd (mph)   E 13                      E 15
Vent Rate (kt-ft)     53790                     66690
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-260945-
Southern Hills-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     70           10           60
Temp (24h trend)      91 (+2)      72 (-4)      90
RH % (24h trend)      59 (-3)      98 (+7)      60
Wind 20ft/early(mph)  E 11         NE  9        E 14
Wind 20ft/late(mph)   E 11         NE  9        E 14
Mixing Hgt(ft-agl/msl)5150                      5350
Transport Wnd (mph)   E 12                      E 15
Vent Rate (kt-ft)     51500                     69550
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-260945-
North Coastal Plains-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     50           50           40
Temp (24h trend)      92 (+1)      75 (-4)      91
RH % (24h trend)      64 (-2)      100 (+8)     67
Wind 20ft/early(mph)  E 17 G19     E 14         E 18 G21
Wind 20ft/late(mph)   E 17 G19     E 14         E 18 G21
Mixing Hgt(ft-agl/msl)4710                      5020
Transport Wnd (mph)   E 14                      E 17
Vent Rate (kt-ft)     56520                     75300
Dispersion            5                         5
DSI                   5            5            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-260945-
Northern Hills-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     70           20           60
Temp (24h trend)      91 (+1)      74 (-2)      89
RH % (24h trend)      64 (0)       99 (+5)      65
Wind 20ft/early(mph)  E 13         E 12         NE 17
Wind 20ft/late(mph)   E 13         E 12         NE 17
Mixing Hgt(ft-agl/msl)5000                      5110
Transport Wnd (mph)   E 10                      E 15
Vent Rate (kt-ft)     45000                     66430
Dispersion            5                         5
DSI                   5            3            6
LAL                   2            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-260945-
West Coast-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        None         Tstms
Chance Precip (%)     80           0            60
Temp (24h trend)      93 (+1)      74 (-2)      92
RH % (24h trend)      62 (-1)      98 (+5)      62
Wind 20ft/early(mph)  E 12         E 11         SE 13
Wind 20ft/late(mph)   E 12         E 11         SE 13
Mixing Hgt(ft-agl/msl)4560                      4700
Transport Wnd (mph)   SE  8                     E  9
Vent Rate (kt-ft)     31920                     37600
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-260945-
Eastern Interior-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     50           60           40
Temp (24h trend)      91 (+1)      73 (-3)      89
RH % (24h trend)      60 (-3)      100 (+5)     64
Wind 20ft/early(mph)  E 11         E 10         E 13
Wind 20ft/late(mph)   E 11         E 10         E 13
Mixing Hgt(ft-agl/msl)5370                      5650
Transport Wnd (mph)   E 13                      E 16
Vent Rate (kt-ft)     59070                     79100
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-260945-
Luquillo Mountain Range-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     50           60           50
Temp (24h trend)      89 (+2)      71 (-3)      87
RH % (24h trend)      63 (-1)      100 (+2)     65
Wind 20ft/early(mph)  E 10         E  8         E 11
Wind 20ft/late(mph)   E 10         E  8         E 11
Mixing Hgt(ft-agl/msl)4650                      4350
Transport Wnd (mph)   E 13                      E 16
Vent Rate (kt-ft)     51150                     60900
Dispersion            5                         5
DSI                   6            3            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-260945-
Central Mountain Range-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     80           0            70
Temp (24h trend)      90 (+3)      69 (-5)      88
RH % (24h trend)      62 (-2)      99 (+6)      63
Wind 20ft/early(mph)  E  9         E  9         E 11
Wind 20ft/late(mph)   E  9         E  9         E 11
Mixing Hgt(ft-agl/msl)5760                      5330
Transport Wnd (mph)   E  7                      E 12
Vent Rate (kt-ft)     34560                     53300
Dispersion            5                         5
DSI                   5            2            5
LAL                   2            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-260945-
Cayey Mountain Range-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Showers      Showers
Chance Precip (%)     50           50           40
Temp (24h trend)      89 (+1)      72 (-2)      87
RH % (24h trend)      59 (-1)      100 (+2)     62
Wind 20ft/early(mph)  E 10         E  8         E 12
Wind 20ft/late(mph)   E 10         E  8         E 12
Mixing Hgt(ft-agl/msl)4990                      5150
Transport Wnd (mph)   E 14                      E 16
Vent Rate (kt-ft)     59880                     72100
Dispersion            5                         5
DSI                   5            3            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-260945-
Vieques-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     50           60           50
Temp (24h trend)      91 (0)       77 (-1)      89
RH % (24h trend)      61 (0)       94 (+1)      65
Wind 20ft/early(mph)  E 13 G17     E 12         E 14 G19
Wind 20ft/late(mph)   E 13 G17     E 12         E 14 G19
Mixing Hgt(ft-agl/msl)3590                      3610
Transport Wnd (mph)   E 14                      E 20
Vent Rate (kt-ft)     43080                     61370
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-260945-
Culebra-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     50           60           50
Temp (24h trend)      92 (+1)      78 (-2)      91
RH % (24h trend)      61 (-1)      94 (+5)      61
Wind 20ft/early(mph)  E 13         E 12         E 14 G19
Wind 20ft/late(mph)   E 13         E 12         E 14 G19
Mixing Hgt(ft-agl/msl)3560                      3600
Transport Wnd (mph)   E 14                      E 18
Vent Rate (kt-ft)     42720                     57600
Dispersion            5                         5
DSI                   6            6            6
LAL                   2            2            2
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-260945-
Southwest Coastal Plains and Mona Island-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     70           10           50
Temp (24h trend)      94 (+2)      75 (-4)      94
RH % (24h trend)      58 (-2)      92 (+6)      59
Wind 20ft/early(mph)  SE 18 G23    E 11         E 19 G25
Wind 20ft/late(mph)   SE 18 G23    E 11         E 19 G25
Mixing Hgt(ft-agl/msl)4940                      5410
Transport Wnd (mph)   E 15                      E 10
Vent Rate (kt-ft)     64220                     48690
Dispersion            5                         5
DSI                   5            3            5
LAL                   2            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-260945-
Saint Thomas and Saint John-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Showers      Tstms        Tstms
Chance Precip (%)     20           60           40
Temp (24h trend)      91 (+2)      78 (-2)      89
RH % (24h trend)      63 (0)       94 (+6)      66
Wind 20ft/early(mph)  E 14 G17     E 13         E 14 G18
Wind 20ft/late(mph)   E 14 G17     E 13         E 14 G18
Mixing Hgt(ft-agl/msl)3630                      3450
Transport Wnd (mph)   E 14                      E 18
Vent Rate (kt-ft)     43560                     55200
Dispersion            5                         5
DSI                   6            6            6
LAL                   1            2            2
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-260945-
St Croix-
545 AM AST Wed Sep 25 2024

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Showers      Showers      Tstms
Chance Precip (%)     30           50           50
Temp (24h trend)      92 (+1)      78 (0)       90
RH % (24h trend)      65 (+1)      95 (+2)      67
Wind 20ft/early(mph)  E 14 G18     E 13         E 12
Wind 20ft/late(mph)   E 14 G18     E 13         E 12
Mixing Hgt(ft-agl/msl)4430                      4870
Transport Wnd (mph)   E 18                      E 16
Vent Rate (kt-ft)     70880                     68180
Dispersion            5                         5
DSI                   6            6            6
LAL                   1            1            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$


$$