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

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FNCA52 TJSJ 050827
FWFSJU

Fire Weather Planning Forecast for Puerto Rico
National Weather Service San Juan PR
427 AM AST Sat Oct 5 2024

.DISCUSSION...

KDBI and soil conditions remain below the fire danger thresholds
for the southeastern coastal plains of Puerto Rico. Relative
humidity values will range from the mid-50s to low-60s across
fire-prone areas. Winds will be light and variable during the
morning hours, becoming east-northeast at 10 knots with gusts near
shower activity in the afternoon. Given the expected conditions,
fire weather danger will remain low today.

PRZ014-060830-
Southeast Coastal Plains-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     70           50           50
Temp (24h trend)      91 (+1)      74 (-3)      91
RH % (24h trend)      52 (-6)      90 (+4)      53
Wind 20ft/early(mph)  SE  8        Lgt/Var      S  5
Wind 20ft/late(mph)   SE  8        Lgt/Var      S  5
Mixing Hgt(ft-agl/msl)4710                      3820
Transport Wnd (mph)   E  2                      SE  3
Vent Rate (kt-ft)     9420                      11460
Dispersion            4                         4
DSI                   5            0            5
LAL                   3            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ015-060830-
Southern Hills-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     80           40           70
Temp (24h trend)      87 (+2)      71 (-4)      87
RH % (24h trend)      62 (-8)      98 (+6)      63
Wind 20ft/early(mph)  SE  6        Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   SE  6        Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)5200                      4330
Transport Wnd (mph)   E  2                      SE  2
Vent Rate (kt-ft)     10400                     8660
Dispersion            5                         4
DSI                   5            1            5
LAL                   3            2            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ016-060830-
North Coastal Plains-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     40           50           50
Temp (24h trend)      89 (+1)      75 (-3)      89
RH % (24h trend)      68 (-5)      96 (+3)      70
Wind 20ft/early(mph)  NE  9        E  5         NE  8
Wind 20ft/late(mph)   NE  9        E  5         NE  8
Mixing Hgt(ft-agl/msl)4690                      4310
Transport Wnd (mph)   E  5                      E  2
Vent Rate (kt-ft)     18760                     8620
Dispersion            5                         4
DSI                   5            1            5
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ017-060830-
Northern Hills-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     60           20           70
Temp (24h trend)      88 (+2)      72 (-3)      88
RH % (24h trend)      68 (-6)      98 (+2)      69
Wind 20ft/early(mph)  NE  8        Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   NE  8        Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)5390                      4420
Transport Wnd (mph)   E  5                      SE  1
Vent Rate (kt-ft)     21560                     4420
Dispersion            5                         4
DSI                   5            1            4
LAL                   2            2            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ018-060830-
West Coast-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     60           10           70
Temp (24h trend)      90 (0)       72 (-3)      89
RH % (24h trend)      64 (-5)      99 (+4)      68
Wind 20ft/early(mph)  W  6         NE  6        SW  5
Wind 20ft/late(mph)   W  6         NE  6        SW  5
Mixing Hgt(ft-agl/msl)4430                      4190
Transport Wnd (mph)   SE  3                     S  2
Vent Rate (kt-ft)     13290                     8380
Dispersion            5                         4
DSI                   5            1            4
LAL                   2            1            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ019-060830-
Eastern Interior-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     70           50           80
Temp (24h trend)      87 (+1)      72 (-4)      88
RH % (24h trend)      66 (-6)      98 (+4)      65
Wind 20ft/early(mph)  NE  6        Lgt/Var      SE  6
Wind 20ft/late(mph)   NE  6        Lgt/Var      SE  6
Mixing Hgt(ft-agl/msl)6140                      4860
Transport Wnd (mph)   NE  3                     SE  2
Vent Rate (kt-ft)     18420                     9720
Dispersion            5                         4
DSI                   5            0            4
LAL                   3            2            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ022-060830-
Luquillo Mountain Range-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Mcldy        Pcldy        Mcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     70           50           70
Temp (24h trend)      84 (+3)      69 (-5)      86
RH % (24h trend)      69 (-8)      100 (+5)     67
Wind 20ft/early(mph)  NE  5        Lgt/Var      SE  5
Wind 20ft/late(mph)   NE  5        Lgt/Var      SE  5
Mixing Hgt(ft-agl/msl)5280                      4750
Transport Wnd (mph)   NE  3                     SE  3
Vent Rate (kt-ft)     15840                     14250
Dispersion            4                         4
DSI                   5            0            5
LAL                   3            2            3
Haines Index          4            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ023-060830-
Central Mountain Range-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     80           20           80
Temp (24h trend)      86 (+4)      68 (-4)      85
RH % (24h trend)      67 (-9)      99 (+2)      70
Wind 20ft/early(mph)  Lgt/Var      Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)6020                      4670
Transport Wnd (mph)   E  2                      S  2
Vent Rate (kt-ft)     12040                     9340
Dispersion            5                         4
DSI                   5            1            4
LAL                   3            2            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ024-060830-
Cayey Mountain Range-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Mcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     80           50           80
Temp (24h trend)      84 (+1)      69 (-4)      86
RH % (24h trend)      66 (-7)      100 (+3)     66
Wind 20ft/early(mph)  E  5         Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   E  5         Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)5610                      4710
Transport Wnd (mph)   E  2                      SE  3
Vent Rate (kt-ft)     11220                     14130
Dispersion            5                         4
DSI                   5            0            5
LAL                   3            2            3
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ025-060830-
Vieques-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Mcldy        Pcldy
Precip Type           Tstms        Tstms        Tstms
Chance Precip (%)     60           60           40
Temp (24h trend)      87 (-1)      74 (-5)      91
RH % (24h trend)      65 (-2)      99 (+12)     60
Wind 20ft/early(mph)  NE  5        Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   NE  5        Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)3280                      3160
Transport Wnd (mph)   NE  8                     S  6
Vent Rate (kt-ft)     22960                     15800
Dispersion            5                         4
DSI                   6            2            6
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

PRZ026-060830-
Culebra-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Mclear
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     60           50           20
Temp (24h trend)      89 (0)       76 (-5)      92
RH % (24h trend)      63 (-4)      95 (+10)     59
Wind 20ft/early(mph)  Lgt/Var      Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)3280                      3130
Transport Wnd (mph)   NE  8                     SE  5
Vent Rate (kt-ft)     22960                     12520
Dispersion            5                         4
DSI                   6            2            6
LAL                   2            2            1
Haines Index          3            4            4
RH Recovery                        Excellent

Remarks...None.

$$

PRZ027-060830-
Southwest Coastal Plains and Mona Island-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Mclear       Pcldy
Precip Type           Tstms        Showers      Tstms
Chance Precip (%)     40           30           30
Temp (24h trend)      92 (+1)      75 (-2)      91
RH % (24h trend)      52 (-4)      89 (+3)      52
Wind 20ft/early(mph)  SW  8        NE  5        S  6
Wind 20ft/late(mph)   SW  8        NE  5        S  6
Mixing Hgt(ft-agl/msl)4640                      4060
Transport Wnd (mph)   SE  3                     SE  3
Vent Rate (kt-ft)     13920                     12180
Dispersion            4                         5
DSI                   5            1            5
LAL                   2            2            2
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ001-060830-
Saint Thomas and Saint John-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Mclear
Precip Type           Tstms        Tstms        Showers
Chance Precip (%)     40           50           20
Temp (24h trend)      87 (0)       76 (-4)      88
RH % (24h trend)      67 (-2)      95 (+8)      65
Wind 20ft/early(mph)  Lgt/Var      Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)2910                      3310
Transport Wnd (mph)   E  3                      SE  5
Vent Rate (kt-ft)     8730                      13240
Dispersion            4                         4
DSI                   6            2            6
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$

VIZ002-060830-
St Croix-
427 AM AST Sat Oct 5 2024

                      Today        Tonight      Sun

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Showers      Showers      Showers
Chance Precip (%)     50           40           30
Temp (24h trend)      87 (-1)      73 (-7)      89
RH % (24h trend)      68 (+2)      99 (+13)     65
Wind 20ft/early(mph)  Lgt/Var      Lgt/Var      Lgt/Var
Wind 20ft/late(mph)   Lgt/Var      Lgt/Var      Lgt/Var
Mixing Hgt(ft-agl/msl)3920                      4220
Transport Wnd (mph)   E  2                      S  3
Vent Rate (kt-ft)     7840                      12660
Dispersion            4                         4
DSI                   5            1            6
LAL                   2            2            1
Haines Index          3            3            3
RH Recovery                        Excellent

Remarks...None.

$$


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