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: 5:08 PM CDT  ·  Refresh
38°C
Feels like 43°
Partly Cloudy
▲ 40°  /  ▼ 24°
Wind
3 mph WSW
Humidity
39%
Dew Point
20°
Pressure
29.63 inHg
Visibility
10 mi
UV Index
5.7
Cloud Cover
56%
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 partly cloudy at 38°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1827 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
38°
46%
6 PM
36°
47%
7 PM
34°
36%
8 PM
32°
33%
9 PM
31°
38%
10 PM
29°
30%
11 PM
29°
15%
12 AM
28°
17%
1 AM
28°
20%
2 AM
27°
20%
3 AM
27°
20%
4 AM
27°
8%
5 AM
27°
5%
6 AM
24°
5%
7 AM
24°
5%
8 AM
26°
18%
9 AM
28°
18%
10 AM
30°
19%
11 AM
31°
19%
12 PM
35°
19%
1 PM
37°
20%
2 PM
39°
22%
3 PM
39°
22%
4 PM
41°
24%
7-Day Forecast
Today
40° 24°
Partly Cloudy with a 46% chance of rain.
Sat
44° 24°
Mostly Clear with a 30% chance of rain.
Sun
42° 22°
Mostly Clear.
Mon
41° 25°
Clear with a 31% chance of rain.
Tue
38° 23°
Partly Cloudy.
Wed
40° 23°
Drizzle, 53% chance.
Thu
38° 24°
Drizzle, 49% chance.
TimeTempConditionsPrecipWindHumidity
Now 38° Partly Cloudy 46% 3 mph WSW 39%
6 PM 36° Mostly Cloudy 47% 4 mph S 53%
7 PM 34° Mostly Cloudy 36% 4 mph SSW 61%
8 PM 32° Overcast 33% 5 mph SSW 60%
9 PM 31° Rain 38% 7 mph WNW 60%
10 PM 29° Overcast 30% 4 mph SSE 60%
11 PM 29° Overcast 15% 3 mph SSW 62%
12 AM 28° Overcast 17% 4 mph SSW 65%
1 AM 28° Thunderstorm 20% 3 mph SW 67%
2 AM 27° Rain 20% 5 mph SW 68%
3 AM 27° Partly Cloudy 20% 4 mph WSW 70%
4 AM 27° Partly Cloudy 8% 4 mph SW 71%
5 AM 27° Partly Cloudy 5% 4 mph SW 73%
6 AM 24° Mostly Clear 5% 4 mph WSW 75%
7 AM 24° Mostly Clear 5% 4 mph WSW 76%
8 AM 26° Clear 18% 5 mph WSW 67%
9 AM 28° Clear 18% 5 mph W 56%
10 AM 30° Clear 19% 5 mph W 48%
11 AM 31° Mostly Clear 19% 4 mph W 44%
12 PM 35° Mostly Clear 19% 3 mph W 39%
1 PM 37° Mostly Clear 20% 3 mph WNW 35%
2 PM 39° Mostly Clear 22% 3 mph W 34%
3 PM 39° Mostly Clear 22% 4 mph W 34%
4 PM 41° Mostly Clear 24% 4 mph ESE 33%
15-Day Forecast
Today
8/21
Partly Cloudy
46%
24°
40°
Sat
8/22
Mostly Clear
30%
24°
44°
Sun
8/23
Mostly Clear
10%
22°
42°
Mon
8/24
Clear
31%
25°
41°
Tue
8/25
Partly Cloudy
7%
23°
38°
Wed
8/26
Drizzle
53%
23°
40°
Thu
8/27
Drizzle
49%
24°
38°
Fri
8/28
Drizzle
49%
22°
40°
Sat
8/29
Drizzle
47%
23°
39°
Sun
8/30
Clear
35%
23°
41°
Mon
8/31
Clear
25%
24°
40°
Tue
9/1
Drizzle
60%
23°
39°
Wed
9/2
Drizzle
60%
23°
39°
Thu
9/3
Clear
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
Sat 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, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2608 J/kg
MLCAPE2349 J/kg
MUCAPE2608 J/kg
SBCIN-2 J/kg
MLCIN-9 J/kg
Lifted Index-5.5
Kinematics
0–6 km Shear15 kt
0–1 km Shear6 kt
Eff. Shear10 kt
0–1 km SRH24
0–3 km SRH33
Eff. SRH33
Storm Motion62° @ 17 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index40.7
Thermo & Levels
PWAT2.08 in
0–3 km LR8.8 °C/km
700–500 LR6.2 °C/km
Total Totals51.9
LCL777 hPa
LFC764 hPa
EL157 hPa
Freezing Lvl15,000 ft