Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Extreme Heat Warning — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM Heat Advisory — Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS 8:00 PM

Mississippi Sound, GM

Last updated: 7:19 PM CDT  ·  Refresh
26°C
Feels like 28°
Rain
▲ 37°  /  ▼ 23°
Wind
9 mph NE
Humidity
90%
Dew Point
24°
Pressure
29.96 inHg
Visibility
5 mi
UV Index
0.4
Cloud Cover
100%
Sunrise
6:35 AM
Sunset
7:40 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Mississippi Sound is currently rain at 26°C. Precipitation is likely — peak probability 80% around 8 PM. Atmospheric instability is elevated (CAPE up to 2857 J/kg) — isolated convective development possible. Sunrise: 6:35AM · Sunset: 7:40PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Extreme Heat Warning
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
Heat Advisory
Pointe Coupee, LA, West Feliciana, LA, East Feliciana, LA, St. Helena, LA, Washington, LA, Iberville, LA, West Baton Rouge, LA, East Baton Rouge, LA, Assumption, LA, St. James, LA, St. John The Baptist, LA, Upper St. Bernard, LA, Lower St. Bernard, LA, Northern Tangipahoa, LA, Southeast St. Tammany, LA, Western Orleans, LA, Eastern Orleans, LA, Northern St. Tammany, LA, Southwestern St. Tammany, LA, Central Tangipahoa, LA, Lower Tangipahoa, LA, Northern Livingston, LA, Southern Livingston, LA, Western Ascension, LA, Eastern Ascension, LA, Upper Jefferson, LA, Upper Plaquemines, LA, Central Plaquemines, LA, Lower Plaquemines, LA, Central Jefferson, LA, Coastal Jefferson, LA, Upper Lafourche, LA, Lower Lafourche, LA, Upper Terrebonne, LA, Lower Terrebonne, LA, Upper St. Charles, LA, Central St. Charles, LA, Lower St. Charles, LA, Wilkinson, MS, Amite, MS, Pike, MS, Walthall, MS, Pearl River, MS, Northern Hancock, MS, Northern Harrison, MS, Northern Jackson, MS, Southern Hancock, MS, Southern Harrison, MS, Southern Jackson, MS
Expires 8:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
68%
8 PM
27°
80%
9 PM
26°
78%
10 PM
26°
59%
11 PM
26°
30%
12 AM
26°
22%
1 AM
26°
8%
2 AM
26°
8%
3 AM
26°
8%
4 AM
26°
7%
5 AM
23°
4%
6 AM
23°
4%
7 AM
24°
3%
8 AM
26°
3%
9 AM
27°
3%
10 AM
29°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
36°
3%
2 PM
37°
5%
3 PM
38°
5%
4 PM
38°
5%
5 PM
37°
5%
6 PM
37°
10%
7-Day Forecast
Tonight
37° 23°
Rain, 68% chance.
Sat
41° 23°
Partly Cloudy.
Sun
40° 26°
Partly Cloudy with a 44% chance of rain.
Mon
36° 25°
Partly Cloudy with a 52% chance of rain.
Tue
38° 25°
Partly Cloudy with a 40% chance of rain.
Wed
36° 24°
Heavy Rain, 80% chance.
Thu
35° 24°
Rain, 83% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Rain 68% 9 mph NE 90%
8 PM 27° Rain 80% 6 mph NNE 90%
9 PM 26° Heavy Rain 78% 5 mph S 91%
10 PM 26° Rain 59% 7 mph SSW 91%
11 PM 26° Mostly Cloudy 30% 5 mph SW 90%
12 AM 26° Mostly Cloudy 22% 4 mph W 90%
1 AM 26° Mostly Cloudy 8% 4 mph W 89%
2 AM 26° Mostly Cloudy 8% 4 mph W 90%
3 AM 26° Mostly Cloudy 8% 4 mph W 90%
4 AM 26° Mostly Cloudy 7% 3 mph WNW 90%
5 AM 23° Mostly Cloudy 4% 3 mph W 90%
6 AM 23° Mostly Cloudy 4% 3 mph W 90%
7 AM 24° Partly Cloudy 3% 3 mph WSW 89%
8 AM 26° Partly Cloudy 3% 4 mph W 83%
9 AM 27° Mostly Cloudy 3% 6 mph WNW 76%
10 AM 29° Mostly Cloudy 3% 6 mph WNW 68%
11 AM 31° Mostly Cloudy 3% 5 mph NW 61%
12 PM 32° Mostly Cloudy 3% 4 mph NW 54%
1 PM 36° Mostly Cloudy 3% 4 mph NNW 48%
2 PM 37° Partly Cloudy 5% 4 mph NNW 44%
3 PM 38° Partly Cloudy 5% 4 mph NNW 41%
4 PM 38° Partly Cloudy 5% 4 mph NNW 40%
5 PM 37° Partly Cloudy 5% 3 mph NNW 42%
6 PM 37° Partly Cloudy 10% 2 mph E 44%
15-Day Forecast
Today
8/21
Rain
68%
23°
37°
Sat
8/22
Partly Cloudy
10%
23°
41°
Sun
8/23
Partly Cloudy
44%
26°
40°
Mon
8/24
Partly Cloudy
52%
25°
36°
Tue
8/25
Partly Cloudy
40%
25°
38°
Wed
8/26
Heavy Rain
80%
24°
36°
Thu
8/27
Rain
83%
24°
35°
Fri
8/28
Rain
66%
24°
37°
Sat
8/29
Rain
58%
24°
37°
Sun
8/30
Drizzle
47%
24°
38°
Mon
8/31
Drizzle
47%
24°
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%
23°
37°
51
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
51 AQI 9.1 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 39 51
Sun 44 Good 34 44
Mon 52 Moderate 48 52
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
SBCAPE1235 J/kg
MLCAPE1816 J/kg
MUCAPE2161 J/kg
SBCIN-211 J/kg
MLCIN-126 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear13 kt
0–1 km Shear11 kt
Eff. Shear12 kt
0–1 km SRH49
0–3 km SRH101
Eff. SRH101
Storm Motion9° @ 22 kt
0–1 km EHI0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index42.8
Thermo & Levels
PWAT2.59 in
0–3 km LR5.0 °C/km
700–500 LR5.7 °C/km
Total Totals51.4
LCL987 hPa
LFC760 hPa
EL165 hPa
Freezing Lvl15,066 ft