Severe Thunderstorm Watch 8:00 PM Severe Thunderstorm Watch 8:00 PM Heat Advisory — Columbus, NC, Inland Pender, NC, Coastal Pender, NC, Inland New Hanover, NC, Coastal New Hanover, NC, Inland Brunswick, NC, Coastal Brunswick, NC, Coastal Horry, SC, Inland Georgetown, SC, Coastal Georgetown, SC, Central Horry, SC, Northern Horry, SC 7:00 PM

Topsail Beach, North Carolina

Last updated: 6:17 PM CDT  ·  Refresh
26°C
Feels like 28°
Heavy Rain
▲ 32°  /  ▼ 24°
Wind
12 mph ENE
Humidity
83%
Dew Point
24°
Pressure
29.99 inHg
Visibility
7 mi
UV Index
0.5
Cloud Cover
99%
Sunrise
6:36 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Topsail Beach is currently heavy rain at 26°C. Precipitation is likely — peak probability 87% around 10 AM. Atmospheric instability is elevated (CAPE up to 2151 J/kg) — isolated convective development possible. Sunrise: 6:36AM · Sunset: 7:50PM.

Alerts

Severe Thunderstorm Watch
Expires 8:00 PM
Severe Thunderstorm Watch
Expires 8:00 PM
Heat Advisory
Columbus, NC, Inland Pender, NC, Coastal Pender, NC, Inland New Hanover, NC, Coastal New Hanover, NC, Inland Brunswick, NC, Coastal Brunswick, NC, Coastal Horry, SC, Inland Georgetown, SC, Coastal Georgetown, SC, Central Horry, SC, Northern Horry, SC
Expires 7:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
63%
8 PM
27°
72%
9 PM
26°
75%
10 PM
26°
72%
11 PM
26°
71%
12 AM
25°
70%
1 AM
25°
60%
2 AM
25°
60%
3 AM
26°
47%
4 AM
26°
50%
5 AM
26°
54%
6 AM
26°
59%
7 AM
26°
67%
8 AM
26°
79%
9 AM
28°
79%
10 AM
28°
87%
11 AM
28°
87%
12 PM
28°
87%
1 PM
28°
87%
2 PM
28°
78%
3 PM
28°
77%
4 PM
28°
67%
5 PM
28°
63%
6 PM
29°
60%
7-Day Forecast
Tonight
32° 24°
Heavy Rain, 72% chance.
Sat
31° 25°
Heavy Rain, 87% chance.
Sun
33° 25°
Partly Cloudy with a 48% chance of rain.
Mon
33° 25°
Partly Cloudy with a 60% chance of rain.
Tue
32° 23°
Rain, 75% chance.
Wed
32° 24°
Heavy Rain, 83% chance.
Thu
31° 24°
Heavy Rain, 83% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Heavy Rain 63% 12 mph ENE 83%
8 PM 27° Thunderstorm 72% 12 mph E 85%
9 PM 26° Heavy Rain 75% 8 mph ESE 86%
10 PM 26° Overcast 72% 5 mph NE 88%
11 PM 26° Overcast 71% 6 mph N 88%
12 AM 25° Heavy Rain 70% 7 mph WNW 87%
1 AM 25° Heavy Rain 60% 6 mph E 87%
2 AM 25° Mostly Cloudy 60% 5 mph ESE 87%
3 AM 26° Mostly Cloudy 47% 5 mph SE 87%
4 AM 26° Mostly Cloudy 50% 5 mph SE 87%
5 AM 26° Mostly Cloudy 54% 5 mph SSE 86%
6 AM 26° Mostly Cloudy 59% 7 mph SSE 85%
7 AM 26° Overcast 67% 9 mph S 84%
8 AM 26° Overcast 79% 10 mph SSW 83%
9 AM 28° Mostly Cloudy 79% 9 mph SSW 80%
10 AM 28° Heavy Rain 87% 7 mph SSW 78%
11 AM 28° Heavy Rain 87% 7 mph SSW 76%
12 PM 28° Mostly Cloudy 87% 8 mph SSW 77%
1 PM 28° Mostly Cloudy 87% 10 mph SSW 79%
2 PM 28° Mostly Cloudy 78% 10 mph SSW 79%
3 PM 28° Mostly Cloudy 77% 10 mph SSW 78%
4 PM 28° Mostly Cloudy 67% 10 mph SSW 77%
5 PM 28° Mostly Cloudy 63% 10 mph SSW 77%
6 PM 29° Partly Cloudy 60% 11 mph SSW 80%
15-Day Forecast
Today
8/21
Heavy Rain
72%
24°
32°
Sat
8/22
Heavy Rain
87%
25°
31°
Sun
8/23
Partly Cloudy
48%
25°
33°
Mon
8/24
Partly Cloudy
60%
25°
33°
Tue
8/25
Rain
75%
23°
32°
Wed
8/26
Heavy Rain
83%
24°
32°
Thu
8/27
Heavy Rain
83%
24°
31°
Fri
8/28
Rain
83%
25°
32°
Sat
8/29
Thunderstorm
73%
24°
32°
Sun
8/30
Rain
72%
25°
33°
Mon
8/31
Rain
66%
24°
34°
Tue
9/1
Drizzle
60%
24°
33°
Wed
9/2
Drizzle
60%
24°
32°
Thu
9/3
Drizzle
60%
23°
32°
Fri
9/4
Drizzle
60%
23°
32°
53
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
53 AQI 10.3 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 53 Moderate 37 53
Sun 34 Good 34 28
Mon 42 Good 34 42
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
SBCAPE1614 J/kg
MLCAPE1227 J/kg
MUCAPE1766 J/kg
SBCIN-4 J/kg
MLCIN-10 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear30 kt
0–1 km Shear15 kt
Eff. Shear30 kt
0–1 km SRH74
0–3 km SRH91
Eff. SRH91
Storm Motion252° @ 20 kt
0–1 km EHI0.8
Composite Parameters
Sig. Tornado0.4
STP (eff)0.4
Supercell2.5
K-Index34.2
Thermo & Levels
PWAT2.40 in
0–3 km LR5.4 °C/km
700–500 LR5.7 °C/km
Total Totals44.5
LCL982 hPa
LFC916 hPa
EL171 hPa
Freezing Lvl14,587 ft