026
FNUS54 KHGX 211939
FWFHGX
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST TEXAS
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
239 PM CDT TUE APR 21 2026
DISCUSSION
SOUTHEASTERLY WINDS GENERALLY IN THE 10-15 MPH RANGE WILL PERSIST
FOR MOST OF THE WEEK. WITH CHANCES FOR SHOWERS AND THUNDERSTORMS THIS AFTERNOON
AND PERSISTING THROUGH THE END OF THE WEEK, MINIMUM
RH VALUES WILL REMAIN GENERALLY ABOVE 60%.
TXZ163-164-220915-
HOUSTON-TRINITY-
INCLUDING THE CITIES OF CROCKETT, GROVETON, AND TRINITY
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 60 0 0
CHANCE OF THUNDER (%) 30 50 0 0
TEMP (24H TREND) 57 (+1) 79 (+16) 63 83
RH % (24H TREND) 100 (+9) 69 (-13) 100 59
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR SE 5 LGT/VAR S 7
MAX/MIN MIX HGT(M) 1020 1640
MAX/MIN MIX HGT(FT) 3330 5380
TRANSPORT WND (KTS) S 9 S 17
TRANSPORT WND (M/S) S 5 S 9
VENT RATE (M/S-M) 5100 14760
CATEGORY DAY 3 4
SUNSHINE HOURS 5 5
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ176-195>198-220915-
BRAZOS-BURLESON-GRIMES-MADISON-WASHINGTON-
INCLUDING THE CITIES OF BRENHAM, BRYAN, CALDWELL,
COLLEGE STATION, MADISONVILLE, NAVASOTA, AND SOMERVILLE
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 40 0 0
CHANCE OF THUNDER (%) 30 40 0 0
TEMP (24H TREND) 60 (+2) 80 (+15) 65 83
RH % (24H TREND) 100 (+3) 72 (-18) 100 62
WIND 20FT/EARLY(MPH) SE 6 LGT/VAR SE 5 S 7
WIND 20FT/LATE(MPH) LGT/VAR SE 6 S 5 S 10 G17
MAX/MIN MIX HGT(M) 1040 1640
MAX/MIN MIX HGT(FT) 3410 5370
TRANSPORT WND (KTS) S 9 S 17
TRANSPORT WND (M/S) S 5 S 9
VENT RATE (M/S-M) 5200 14760
CATEGORY DAY 3 4
SUNSHINE HOURS 5 5
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ177>179-199-200-220915-
MONTGOMERY-NORTHERN LIBERTY-POLK-SAN JACINTO-WALKER-
INCLUDING THE CITIES OF CLEVELAND, COLDSPRING, CONROE, CORRIGAN,
DAYTON, HUNTSVILLE, LIBERTY, LIVINGSTON, SHEPHERD,
AND THE WOODLANDS
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE TSTMS
CHANCE PRECIP (%) 40 70 0 20
CHANCE OF THUNDER (%) 40 70 0 20
TEMP (24H TREND) 59 (+1) 81 (+16) 64 85
RH % (24H TREND) 100 (+9) 71 (-11) 100 60
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR SE 5 LGT/VAR S 8
MAX/MIN MIX HGT(M) 1110 1630
MAX/MIN MIX HGT(FT) 3650 5360
TRANSPORT WND (KTS) SE 10 S 16
TRANSPORT WND (M/S) SE 5 S 8
VENT RATE (M/S-M) 5550 13040
CATEGORY DAY 3 4
SUNSHINE HOURS 5 6
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ212-213-227-237-238-220915-
FORT BEND-INLAND BRAZORIA-INLAND GALVESTON-INLAND HARRIS-WALLER-
INCLUDING THE CITIES OF ALVIN, ANGLETON, BROOKSHIRE,
FIRST COLONY, FRIENDSWOOD, HEMPSTEAD, HOUSTON, LEAGUE CITY,
MISSION BEND, MISSOURI CITY, PEARLAND, PECAN GROVE, PRAIRIE VIEW,
ROSENBERG, SUGAR LAND, AND WALLER
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE TSTMS
CHANCE PRECIP (%) 40 60 0 10
CHANCE OF THUNDER (%) 40 50 0 10
TEMP (24H TREND) 64 (+2) 81 (+11) 67 84
RH % (24H TREND) 100 (+7) 68 (-13) 100 60
WIND 20FT/EARLY(MPH) SE 6 LGT/VAR SE 6 SE 6
WIND 20FT/LATE(MPH) LGT/VAR SE 7 LGT/VAR S 10
MAX/MIN MIX HGT(M) 1160 1470
MAX/MIN MIX HGT(FT) 3810 4820
TRANSPORT WND (KTS) SE 10 S 15
TRANSPORT WND (M/S) SE 5 S 8
VENT RATE (M/S-M) 5800 11760
CATEGORY DAY 3 4
SUNSHINE HOURS 5 6
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ210-211-226-235-236-220915-
AUSTIN-COLORADO-INLAND JACKSON-INLAND MATAGORDA-WHARTON-
INCLUDING THE CITIES OF BAY CITY, BELLVILLE, COLUMBUS,
EAGLE LAKE, EDNA, EL CAMPO, GANADO, SEALY, WEIMAR, AND WHARTON
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 40 40 0 0
CHANCE OF THUNDER (%) 40 40 0 0
TEMP (24H TREND) 64 (+2) 83 (+12) 67 85
RH % (24H TREND) 100 (+1) 65 (-19) 100 58
WIND 20FT/EARLY(MPH) SE 7 SE 5 SE 6 S 6
WIND 20FT/LATE(MPH) LGT/VAR SE 8 LGT/VAR S 12
MAX/MIN MIX HGT(M) 1190 1660
MAX/MIN MIX HGT(FT) 3910 5460
TRANSPORT WND (KTS) S 10 S 15
TRANSPORT WND (M/S) S 5 S 8
VENT RATE (M/S-M) 5950 13280
CATEGORY DAY 3 4
SUNSHINE HOURS 5 6
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ214-300-313-338-220915-
CHAMBERS-COASTAL GALVESTON-COASTAL HARRIS-SOUTHERN LIBERTY-
INCLUDING THE CITIES OF ANAHUAC, BAYTOWN, DEVERS, DICKINSON,
LA MARQUE, MONT BELVIEU, OLD RIVER-WINFREE, PASADENA, STOWELL,
TEXAS CITY, AND WINNIE
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 70 10 20
CHANCE OF THUNDER (%) 40 70 10 20
TEMP (24H TREND) 64 (+1) 80 (+9) 67 82
RH % (24H TREND) 100 (+14) 71 (-3) 100 66
WIND 20FT/EARLY(MPH) SE 7 SE 5 SE 7 SE 7
WIND 20FT/LATE(MPH) LGT/VAR SE 9 SE 5 S 12
MAX/MIN MIX HGT(M) 1060 1230
MAX/MIN MIX HGT(FT) 3460 4030
TRANSPORT WND (KTS) SE 12 S 16
TRANSPORT WND (M/S) SE 6 S 8
VENT RATE (M/S-M) 6360 9840
CATEGORY DAY 3 4
SUNSHINE HOURS 6 7
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ335>337-220915-
COASTAL BRAZORIA-COASTAL JACKSON-COASTAL MATAGORDA-
INCLUDING THE CITIES OF CLUTE, FREEPORT, LAKE JACKSON,
AND PALACIOS
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 40 50 0 0
CHANCE OF THUNDER (%) 40 50 0 0
TEMP (24H TREND) 68 (+2) 82 (+7) 69 83
RH % (24H TREND) 97 (+3) 69 (-7) 100 67
WIND 20FT/EARLY(MPH) SE 9 SE 6 SE 8 SE 8
WIND 20FT/LATE(MPH) SE 5 SE 10 SE 6 SE 12
MAX/MIN MIX HGT(M) 1180 1240
MAX/MIN MIX HGT(FT) 3880 4060
TRANSPORT WND (KTS) S 11 S 15
TRANSPORT WND (M/S) S 6 S 8
VENT RATE (M/S-M) 7080 9920
CATEGORY DAY 3 4
SUNSHINE HOURS 6 7
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
TXZ436>439-220915-
BOLIVAR PENINSULA-BRAZORIA ISLANDS-GALVESTON ISLAND-
MATAGORDA ISLANDS-
INCLUDING THE CITIES OF GALVESTON AND SURFSIDE BEACH
239 PM CDT TUE APR 21 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 60 20 20
CHANCE OF THUNDER (%) 40 50 20 20
TEMP (24H TREND) 71 (+2) 78 (+3) 70 79
RH % (24H TREND) 91 (+8) 75 (+1) 95 75
WIND 20FT/EARLY(MPH) SE 13 SE 8 SE 11 S 10
WIND 20FT/LATE(MPH) SE 9 SE 11 SE 10 SE 12
MAX/MIN MIX HGT(M) 880 920
MAX/MIN MIX HGT(FT) 2890 3010
TRANSPORT WND (KTS) SE 12 S 15
TRANSPORT WND (M/S) SE 6 S 8
VENT RATE (M/S-M) 5280 7360
CATEGORY DAY 3 3
SUNSHINE HOURS 7 8
REMARKS...
FOG POTENTIAL (FIRST 24 HOURS)...LOW
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE
LOWER 80S. SOUTH WINDS AROUND 10 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE
MID 80S. SOUTH WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE MID
80S. SOUTHEAST WINDS 5 TO 10 MPH.
MONDAY
PARTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE MID
80S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE MID
80S. EAST WINDS AROUND 5 MPH.
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