Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM Extreme Heat Warning — Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 9:00 PM Heat Advisory — Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX 8:00 PM

Shelby County, Texas, United States

Last updated: 7:12 PM CDT  ·  Refresh
34°C
Feels like 42°
Overcast
▲ 40°  /  ▼ 24°
Wind
5 mph SW
Humidity
58%
Dew Point
21°
Pressure
29.62 inHg
Visibility
10 mi
UV Index
1.0
Cloud Cover
90%
Sunrise
6:45 AM
Sunset
7:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Shelby County is currently overcast at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1872 J/kg) — isolated convective development possible. Sunrise: 6:45AM · Sunset: 7:53PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
Extreme Heat Warning
Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 9:00 PM
Heat Advisory
Columbia, AR, Union, AR, Caddo, LA, Bossier, LA, Webster, LA, Claiborne, LA, Lincoln, LA, Union, LA, De Soto, LA, Red River, LA, Bienville, LA, Jackson, LA, Ouachita, LA, Sabine, LA, Natchitoches, LA, Winn, LA, Grant, LA, Caldwell, LA, La Salle, LA, Wood, TX, Upshur, TX, Marion, TX, Smith, TX, Gregg, TX, Harrison, TX, Cherokee, TX, Rusk, TX, Panola, TX, Nacogdoches, TX, Shelby, TX, Angelina, TX, San Augustine, TX, Sabine, TX
Expires 8:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
34%
8 PM
32°
30%
9 PM
32°
30%
10 PM
29°
29%
11 PM
28°
29%
12 AM
28°
27%
1 AM
28°
14%
2 AM
27°
15%
3 AM
27°
15%
4 AM
27°
7%
5 AM
27°
4%
6 AM
24°
4%
7 AM
24°
5%
8 AM
27°
17%
9 AM
29°
18%
10 AM
32°
18%
11 AM
34°
18%
12 PM
36°
19%
1 PM
37°
21%
2 PM
43°
23%
3 PM
43°
24%
4 PM
43°
24%
5 PM
42°
28%
6 PM
40°
42%
7-Day Forecast
Tonight
40° 24°
Overcast with a 34% chance of rain.
Sat
46° 24°
Partly Cloudy with a 34% chance of rain.
Sun
42° 23°
Partly Cloudy.
Mon
41° 24°
Clear with a 32% chance of rain.
Tue
41° 24°
Partly Cloudy.
Wed
40° 24°
Drizzle, 52% chance.
Thu
39° 24°
Partly Cloudy with a 43% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Overcast 34% 5 mph SW 58%
8 PM 32° Overcast 30% 5 mph SSW 62%
9 PM 32° Overcast 30% 4 mph S 65%
10 PM 29° Mostly Cloudy 29% 4 mph S 68%
11 PM 28° Mostly Cloudy 29% 4 mph S 72%
12 AM 28° Mostly Cloudy 27% 4 mph SSW 76%
1 AM 28° Mostly Cloudy 14% 4 mph SSW 77%
2 AM 27° Mostly Cloudy 15% 4 mph SW 77%
3 AM 27° Mostly Cloudy 15% 4 mph SW 77%
4 AM 27° Mostly Cloudy 7% 4 mph SW 78%
5 AM 27° Partly Cloudy 4% 5 mph SW 79%
6 AM 24° Partly Cloudy 4% 5 mph WSW 80%
7 AM 24° Mostly Clear 5% 5 mph WSW 79%
8 AM 27° Clear 17% 6 mph W 68%
9 AM 29° Mostly Clear 18% 6 mph W 56%
10 AM 32° Partly Cloudy 18% 6 mph WNW 46%
11 AM 34° Partly Cloudy 18% 5 mph WNW 40%
12 PM 36° Partly Cloudy 19% 4 mph NW 33%
1 PM 37° Partly Cloudy 21% 3 mph NNW 28%
2 PM 43° Partly Cloudy 23% 3 mph N 26%
3 PM 43° Partly Cloudy 24% 4 mph E 24%
4 PM 43° Partly Cloudy 24% 4 mph SE 24%
5 PM 42° Partly Cloudy 28% 4 mph SSE 25%
6 PM 40° Mostly Clear 42% 4 mph SSE 27%
15-Day Forecast
Today
8/21
Overcast
34%
24°
40°
Sat
8/22
Partly Cloudy
34%
24°
46°
Sun
8/23
Partly Cloudy
12%
23°
42°
Mon
8/24
Clear
32%
24°
41°
Tue
8/25
Partly Cloudy
7%
24°
41°
Wed
8/26
Drizzle
52%
24°
40°
Thu
8/27
Partly Cloudy
43%
24°
39°
Fri
8/28
Rain
58%
24°
41°
Sat
8/29
Drizzle
47%
23°
41°
Sun
8/30
Clear
23%
23°
41°
Mon
8/31
Clear
25%
23°
39°
Tue
9/1
Drizzle
60%
23°
39°
Wed
9/2
Drizzle
60%
23°
39°
Thu
9/3
Drizzle
60%
23°
39°
Fri
9/4
Clear
60%
23°
39°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 9.5 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 37 52
Sun 54 Moderate 39 54
Mon 57 Moderate 37 57
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Aug 21, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2367 J/kg
MLCAPE2377 J/kg
MUCAPE2542 J/kg
SBCIN-187 J/kg
MLCIN-75 J/kg
Lifted Index-5.0
Kinematics
0–6 km Shear16 kt
0–1 km Shear7 kt
Eff. Shear13 kt
0–1 km SRH29
0–3 km SRH31
Eff. SRH31
Storm Motion54° @ 17 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.0
Thermo & Levels
PWAT2.01 in
0–3 km LR7.6 °C/km
700–500 LR6.1 °C/km
Total Totals50.7
LCL828 hPa
LFC740 hPa
EL161 hPa
Freezing Lvl15,154 ft