Severe Thunderstorm Watch 8:00 PM Special Marine Warning — S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM 7:00 PM

Onslow County, North Carolina, United States

Last updated: 6:25 PM CDT  ·  Refresh
25°C
Feels like 28°
Rain
▲ 32°  /  ▼ 23°
Wind
5 mph NNW
Humidity
84%
Dew Point
23°
Pressure
29.99 inHg
Visibility
6 mi
UV Index
0.4
Cloud Cover
99%
Sunrise
6:34 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Onslow County is currently rain at 25°C. Precipitation is likely — peak probability 89% around 8 PM. Atmospheric instability is elevated (CAPE up to 1830 J/kg) — isolated convective development possible. Sunrise: 6:34AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Special Marine Warning
S of Cape Lookout NC to Surf City NC out to 20 NM, AM, Waters from Cape Lookout to Surf City NC from 20 to 60 NM, AM
Expires 7:00 PM
49 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
80%
8 PM
26°
88%
9 PM
25°
87%
10 PM
24°
80%
11 PM
24°
70%
12 AM
24°
69%
1 AM
24°
60%
2 AM
24°
54%
3 AM
24°
47%
4 AM
24°
48%
5 AM
23°
54%
6 AM
23°
59%
7 AM
23°
59%
8 AM
24°
83%
9 AM
25°
83%
10 AM
26°
87%
11 AM
26°
87%
12 PM
26°
87%
1 PM
27°
87%
2 PM
27°
86%
3 PM
28°
86%
4 PM
28°
73%
5 PM
28°
53%
6 PM
28°
49%
7-Day Forecast
Tonight
32° 23°
Rain, 80% chance.
Sat
31° 23°
Heavy Rain, 87% chance.
Sun
33° 24°
Partly Cloudy with a 38% chance of rain.
Mon
33° 23°
Partly Cloudy with a 55% chance of rain.
Tue
32° 21°
Rain, 63% chance.
Wed
33° 22°
Heavy Rain, 83% chance.
Thu
32° 23°
Heavy Rain, 83% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Rain 80% 5 mph NNW 84%
8 PM 26° Rain 88% 6 mph NNW 88%
9 PM 25° Heavy Rain 87% 5 mph NNE 90%
10 PM 24° Heavy Rain 80% 5 mph NE 92%
11 PM 24° Overcast 70% 4 mph E 93%
12 AM 24° Mostly Cloudy 69% 5 mph SE 93%
1 AM 24° Rain 60% 4 mph ESE 93%
2 AM 24° Mostly Cloudy 54% 4 mph SE 93%
3 AM 24° Mostly Cloudy 47% 4 mph SE 93%
4 AM 24° Mostly Cloudy 48% 3 mph SE 93%
5 AM 23° Mostly Cloudy 54% 4 mph SE 92%
6 AM 23° Mostly Cloudy 59% 4 mph SE 91%
7 AM 23° Mostly Cloudy 59% 4 mph SSE 90%
8 AM 24° Mostly Cloudy 83% 4 mph S 87%
9 AM 25° Mostly Cloudy 83% 5 mph SSW 84%
10 AM 26° Heavy Rain 87% 6 mph SSW 80%
11 AM 26° Heavy Rain 87% 6 mph SSW 79%
12 PM 26° Mostly Cloudy 87% 7 mph SSW 79%
1 PM 27° Mostly Cloudy 87% 8 mph S 80%
2 PM 27° Mostly Cloudy 86% 8 mph S 79%
3 PM 28° Mostly Cloudy 86% 8 mph S 77%
4 PM 28° Mostly Cloudy 73% 8 mph S 74%
5 PM 28° Mostly Cloudy 53% 8 mph S 74%
6 PM 28° Partly Cloudy 49% 7 mph SSW 77%
15-Day Forecast
Today
8/21
Rain
80%
23°
32°
Sat
8/22
Heavy Rain
87%
23°
31°
Sun
8/23
Partly Cloudy
38%
24°
33°
Mon
8/24
Partly Cloudy
55%
23°
33°
Tue
8/25
Rain
63%
21°
32°
Wed
8/26
Heavy Rain
83%
22°
33°
Thu
8/27
Heavy Rain
83%
23°
32°
Fri
8/28
Rain
83%
23°
33°
Sat
8/29
Rain
73%
23°
33°
Sun
8/30
Drizzle
54%
23°
34°
Mon
8/31
Drizzle
56%
23°
36°
Tue
9/1
Drizzle
60%
24°
36°
Wed
9/2
Drizzle
60%
23°
32°
Thu
9/3
Drizzle
60%
23°
32°
Fri
9/4
Drizzle
60%
22°
32°
49
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
49 AQI 8.9 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 49 Good 36 49
Sun 35 Good 35 27
Mon 39 Good 36 39
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
SBCAPE905 J/kg
MLCAPE1075 J/kg
MUCAPE1573 J/kg
SBCIN-26 J/kg
MLCIN-13 J/kg
Lifted Index-3.3
Kinematics
0–6 km Shear26 kt
0–1 km Shear14 kt
Eff. Shear26 kt
0–1 km SRH98
0–3 km SRH110
Eff. SRH110
Storm Motion252° @ 20 kt
0–1 km EHI0.6
Composite Parameters
Sig. Tornado0.3
STP (eff)0.4
Supercell2.3
K-Index35.9
Thermo & Levels
PWAT2.43 in
0–3 km LR5.1 °C/km
700–500 LR5.6 °C/km
Total Totals46.4
LCL986 hPa
LFC860 hPa
EL226 hPa
Freezing Lvl14,462 ft