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: 8:19 PM CDT  ·  Refresh
32°C
Feels like 37°
Mostly Cloudy
▲ 40°  /  ▼ 24°
Wind
4 mph SSW
Humidity
62%
Dew Point
21°
Pressure
29.64 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
74%
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 mostly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1901 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
32°
16%
9 PM
30°
27%
10 PM
29°
27%
11 PM
28°
27%
12 AM
28°
20%
1 AM
27°
15%
2 AM
27°
15%
3 AM
27°
16%
4 AM
27°
4%
5 AM
24°
5%
6 AM
24°
5%
7 AM
24°
8%
8 AM
27°
16%
9 AM
30°
17%
10 AM
32°
17%
11 AM
34°
17%
12 PM
37°
17%
1 PM
41°
20%
2 PM
41°
20%
3 PM
44°
20%
4 PM
44°
23%
5 PM
41°
28%
6 PM
41°
34%
7 PM
39°
23%
7-Day Forecast
Tonight
40° 24°
Mostly Cloudy with a 27% chance of rain.
Sat
44° 24°
Partly Cloudy with a 26% chance of rain.
Sun
43° 22°
Mostly Clear.
Mon
41° 24°
Clear with a 32% chance of rain.
Tue
41° 25°
Mostly Clear.
Wed
41° 24°
Drizzle, 51% chance.
Thu
39° 23°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Cloudy 16% 4 mph SSW 62%
9 PM 30° Mostly Cloudy 27% 4 mph S 66%
10 PM 29° Overcast 27% 4 mph S 69%
11 PM 28° Mostly Cloudy 27% 4 mph S 73%
12 AM 28° Mostly Cloudy 20% 3 mph SSW 77%
1 AM 27° Mostly Cloudy 15% 4 mph SSW 78%
2 AM 27° Mostly Cloudy 15% 4 mph SW 77%
3 AM 27° Mostly Cloudy 16% 4 mph SW 77%
4 AM 27° Mostly Cloudy 4% 4 mph SW 78%
5 AM 24° Partly Cloudy 5% 4 mph SW 79%
6 AM 24° Partly Cloudy 5% 4 mph WSW 80%
7 AM 24° Partly Cloudy 8% 5 mph WSW 77%
8 AM 27° Partly Cloudy 16% 6 mph W 66%
9 AM 30° Partly Cloudy 17% 7 mph W 55%
10 AM 32° Partly Cloudy 17% 6 mph WNW 45%
11 AM 34° Partly Cloudy 17% 4 mph WNW 39%
12 PM 37° Partly Cloudy 17% 3 mph NW 33%
1 PM 41° Partly Cloudy 20% 3 mph NNW 28%
2 PM 41° Partly Cloudy 20% 3 mph NNE 26%
3 PM 44° Mostly Clear 20% 4 mph E 24%
4 PM 44° Mostly Clear 23% 4 mph ESE 24%
5 PM 41° Mostly Clear 28% 4 mph SSE 26%
6 PM 41° Mostly Clear 34% 5 mph SSE 28%
7 PM 39° Partly Cloudy 23% 5 mph S 31%
15-Day Forecast
Today
8/21
Mostly Cloudy
27%
24°
40°
Sat
8/22
Partly Cloudy
26%
24°
44°
Sun
8/23
Mostly Clear
7%
22°
43°
Mon
8/24
Clear
32%
24°
41°
Tue
8/25
Mostly Clear
8%
25°
41°
Wed
8/26
Drizzle
51%
24°
41°
Thu
8/27
Drizzle
52%
23°
39°
Fri
8/28
Rain
63%
23°
41°
Sat
8/29
Clear
18%
22°
41°
Sun
8/30
Clear
19%
22°
41°
Mon
8/31
Clear
25%
22°
39°
Tue
9/1
Clear
60%
24°
40°
Wed
9/2
Clear
25%
23°
41°
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, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1627 J/kg
MLCAPE2067 J/kg
MUCAPE3428 J/kg
SBCIN-379 J/kg
MLCIN-161 J/kg
Lifted Index-4.7
Kinematics
0–6 km Shear16 kt
0–1 km Shear8 kt
Eff. Shear8 kt
0–1 km SRH33
0–3 km SRH54
Eff. SRH42
Storm Motion49° @ 17 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.5
Thermo & Levels
PWAT1.94 in
0–3 km LR6.5 °C/km
700–500 LR6.6 °C/km
Total Totals52.1
LCL859 hPa
LFC703 hPa
EL171 hPa
Freezing Lvl15,184 ft