Severe Thunderstorm Watch 11:00 PM

Jefferson County, West Virginia, United States

Last updated: 10:33 PM CDT  ·  Refresh
20°C
Feels like 21°
Mostly Cloudy
▲ 29°  /  ▼ 19°
Wind
8 mph SSW
Humidity
92%
Dew Point
19°
Pressure
29.17 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
80%
Sunrise
6:02 AM
Sunset
8:33 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Jefferson County is currently mostly cloudy at 20°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 762 J/kg) — isolated convective development possible. Sunrise: 6:02AM · Sunset: 8:33PM.

Alerts

Severe Thunderstorm Watch
Expires 11:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
31%
12 AM
21°
37%
1 AM
21°
27%
2 AM
21°
6%
3 AM
20°
7%
4 AM
20°
8%
5 AM
19°
16%
6 AM
19°
13%
7 AM
21°
13%
8 AM
22°
13%
9 AM
23°
13%
10 AM
24°
13%
11 AM
25°
5%
12 PM
26°
3%
1 PM
27°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
27°
3%
5 PM
27°
3%
6 PM
26°
3%
7 PM
24°
3%
8 PM
23°
3%
9 PM
22°
3%
10 PM
21°
3%
7-Day Forecast
Tonight
29° 19°
Mostly Cloudy with a 31% chance of rain.
Wed
28° 17°
Mostly Clear.
Thu
27° 14°
Clear.
Fri
28° 13°
Mostly Cloudy.
Sat
27° 17°
Partly Cloudy.
Sun
32° 17°
Rain, 82% chance.
Mon
33° 19°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 20° Mostly Cloudy 31% 8 mph SSW 92%
12 AM 21° Mostly Cloudy 37% 6 mph SSW 92%
1 AM 21° Partly Cloudy 27% 6 mph SSW 94%
2 AM 21° Mostly Clear 6% 5 mph SSW 94%
3 AM 20° Mostly Clear 7% 5 mph SSW 95%
4 AM 20° Partly Cloudy 8% 5 mph SW 95%
5 AM 19° Partly Cloudy 16% 5 mph SW 95%
6 AM 19° Mostly Clear 13% 5 mph SW 93%
7 AM 21° Mostly Clear 13% 5 mph WSW 91%
8 AM 22° Clear 13% 7 mph W 85%
9 AM 23° Clear 13% 9 mph W 76%
10 AM 24° Clear 13% 11 mph W 66%
11 AM 25° Clear 5% 12 mph W 60%
12 PM 26° Mostly Clear 3% 12 mph W 57%
1 PM 27° Mostly Clear 3% 12 mph W 54%
2 PM 27° Mostly Clear 3% 12 mph WNW 52%
3 PM 27° Mostly Clear 3% 12 mph WNW 51%
4 PM 27° Mostly Clear 3% 11 mph WNW 51%
5 PM 27° Mostly Clear 3% 10 mph WNW 53%
6 PM 26° Mostly Clear 3% 9 mph WNW 56%
7 PM 24° Mostly Clear 3% 8 mph NW 60%
8 PM 23° Mostly Clear 3% 8 mph NW 62%
9 PM 22° Mostly Clear 3% 8 mph NW 64%
10 PM 21° Partly Cloudy 3% 8 mph NW 66%
15-Day Forecast
Today
7/21
Mostly Cloudy
31%
19°
29°
Wed
7/22
Mostly Clear
16%
17°
28°
Thu
7/23
Clear
3%
14°
27°
Fri
7/24
Mostly Cloudy
7%
13°
28°
Sat
7/25
Partly Cloudy
8%
17°
27°
Sun
7/26
Rain
82%
17°
32°
Mon
7/27
Rain
71%
19°
33°
Tue
7/28
Rain
63%
17°
36°
Wed
7/29
Drizzle
69%
16°
31°
Thu
7/30
Drizzle
44%
16°
30°
Fri
7/31
Drizzle
60%
16°
30°
Sat
8/1
Drizzle
60%
17°
30°
Sun
8/2
Drizzle
60%
17°
31°
Mon
8/3
Drizzle
60%
18°
32°
Tue
8/4
Drizzle
60%
18°
33°
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 10.4 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 32 53
Thu 37 Good 37 27
Fri 36 Good 36 36
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 22, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE41 J/kg
MUCAPE180 J/kg
SBCIN-6097 J/kg
MLCIN0 J/kg
Lifted Index1.2
Kinematics
0–6 km Shear38 kt
0–1 km Shear34 kt
Eff. Shear11 kt
0–1 km SRH-26
0–3 km SRH-4
Eff. SRH15
Storm Motion240° @ 38 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index35.5
Thermo & Levels
PWAT1.78 in
0–3 km LR4.1 °C/km
700–500 LR5.9 °C/km
Total Totals46.7
LCL969 hPa
LFC—
EL—
Freezing Lvl14,209 ft