Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Extreme Heat Warning — Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 8:00 PM Heat Advisory — Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS 8:00 PM

Jefferson County, Mississippi, 39069, United States

Last updated: 6:24 PM CDT  ·  Refresh
26°C
Feels like 27°
Rain
▲ 38°  /  ▼ 22°
Wind
12 mph N
Humidity
80%
Dew Point
22°
Pressure
29.69 inHg
Visibility
4 mi
UV Index
1.2
Cloud Cover
96%
Sunrise
6:33 AM
Sunset
7:40 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently rain at 26°C. Precipitation is likely — peak probability 74% around 6 PM. Atmospheric instability is elevated (CAPE up to 2661 J/kg) — isolated convective development possible. Sunrise: 6:33AM · Sunset: 7:40PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Extreme Heat Warning
Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 8:00 PM
Heat Advisory
Morehouse, LA, West Carroll, LA, East Carroll, LA, Richland, LA, Madison, LA, Franklin, LA, Catahoula, LA, Tensas, LA, Concordia, LA, Issaquena, MS, Sharkey, MS, Yazoo, MS, Madison, MS, Warren, MS, Hinds, MS, Rankin, MS, Claiborne, MS, Copiah, MS, Simpson, MS, Jefferson, MS, Adams, MS, Franklin, MS, Lincoln, MS, Lawrence, MS, Jefferson Davis, MS, Marion, MS
Expires 8:00 PM
42 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
74%
7 PM
28°
51%
8 PM
28°
37%
9 PM
26°
28%
10 PM
25°
28%
11 PM
25°
19%
12 AM
25°
19%
1 AM
24°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
22°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
8%
9 AM
28°
8%
10 AM
29°
18%
11 AM
31°
19%
12 PM
32°
19%
1 PM
36°
21%
2 PM
37°
22%
3 PM
37°
22%
4 PM
37°
22%
5 PM
37°
25%
7-Day Forecast
Tonight
38° 22°
Rain, 74% chance.
Sat
40° 22°
Partly Cloudy with a 28% chance of rain.
Sun
38° 24°
Mostly Clear with a 26% chance of rain.
Mon
33° 23°
Partly Cloudy with a 53% chance of rain.
Tue
37° 23°
Mostly Clear with a 45% chance of rain.
Wed
35° 23°
Rain, 69% chance.
Thu
34° 22°
Rain, 67% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Rain 74% 12 mph N 80%
7 PM 28° Overcast 51% 6 mph SSE 88%
8 PM 28° Overcast 37% 5 mph S 88%
9 PM 26° Mostly Cloudy 28% 4 mph SSW 87%
10 PM 25° Mostly Cloudy 28% 4 mph SSW 87%
11 PM 25° Mostly Cloudy 19% 4 mph SW 88%
12 AM 25° Mostly Cloudy 19% 3 mph SW 88%
1 AM 24° Mostly Cloudy 3% 3 mph WSW 88%
2 AM 24° Partly Cloudy 3% 3 mph WSW 88%
3 AM 24° Partly Cloudy 3% 3 mph WSW 88%
4 AM 24° Partly Cloudy 3% 3 mph WSW 88%
5 AM 22° Partly Cloudy 3% 2 mph W 89%
6 AM 22° Partly Cloudy 3% 3 mph WSW 89%
7 AM 23° Partly Cloudy 3% 3 mph W 86%
8 AM 25° Partly Cloudy 8% 3 mph WNW 78%
9 AM 28° Partly Cloudy 8% 3 mph NW 68%
10 AM 29° Partly Cloudy 18% 4 mph NNW 59%
11 AM 31° Partly Cloudy 19% 4 mph NNW 52%
12 PM 32° Partly Cloudy 19% 4 mph N 45%
1 PM 36° Partly Cloudy 21% 4 mph N 41%
2 PM 37° Partly Cloudy 22% 4 mph NNE 38%
3 PM 37° Partly Cloudy 22% 4 mph NNE 36%
4 PM 37° Partly Cloudy 22% 4 mph NNE 35%
5 PM 37° Mostly Clear 25% 3 mph NE 38%
15-Day Forecast
Today
8/21
Rain
74%
22°
38°
Sat
8/22
Partly Cloudy
28%
22°
40°
Sun
8/23
Mostly Clear
26%
24°
38°
Mon
8/24
Partly Cloudy
53%
23°
33°
Tue
8/25
Mostly Clear
45%
23°
37°
Wed
8/26
Rain
69%
23°
35°
Thu
8/27
Rain
67%
22°
34°
Fri
8/28
Drizzle
54%
23°
37°
Sat
8/29
Rain
66%
22°
38°
Sun
8/30
Drizzle
47%
22°
38°
Mon
8/31
Partly Cloudy
36%
23°
38°
Tue
9/1
Drizzle
60%
23°
38°
Wed
9/2
Drizzle
60%
23°
37°
Thu
9/3
Drizzle
60%
23°
37°
Fri
9/4
Drizzle
60%
22°
37°
42
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
42 AQI 7.6 µg/m³
O3
Ground-level ozone
38 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 42 Good 38 42
Sun 46 Good 46 45
Mon 51 Moderate 37 51
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
SBCAPE769 J/kg
MLCAPE1432 J/kg
MUCAPE2756 J/kg
SBCIN-281 J/kg
MLCIN-161 J/kg
Lifted Index-3.6
Kinematics
0–6 km Shear5 kt
0–1 km Shear2 kt
Eff. Shear31 kt
0–1 km SRH36
0–3 km SRH88
Eff. SRH120
Storm Motion26° @ 18 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.2
Supercell5.4
K-Index37.0
Thermo & Levels
PWAT2.31 in
0–3 km LR5.0 °C/km
700–500 LR6.0 °C/km
Total Totals49.0
LCL961 hPa
LFC722 hPa
EL210 hPa
Freezing Lvl14,777 ft