Severe Thunderstorm Watch 9:00 PM Severe Thunderstorm Watch 9:00 PM

Marshall County, Kentucky, United States

Last updated: 8:37 PM CDT  ·  Refresh
28°C
Feels like 33°
Rain
▲ 34°  /  ▼ 20°
Wind
6 mph WNW
Humidity
89%
Dew Point
26°
Pressure
29.37 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
70%
Sunrise
5:50 AM
Sunset
8:08 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Marshall County is currently rain at 28°C. Precipitation is likely — peak probability 63% around 8 PM. Atmospheric instability is elevated (CAPE up to 2674 J/kg) — isolated convective development possible. Sunrise: 5:50AM · Sunset: 8:08PM.

Alerts

Severe Thunderstorm Watch
Expires 9:00 PM
Severe Thunderstorm Watch
Expires 9:00 PM
44 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
63%
9 PM
26°
48%
10 PM
26°
19%
11 PM
26°
19%
12 AM
24°
9%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
22°
3%
5 AM
21°
3%
6 AM
20°
3%
7 AM
21°
3%
8 AM
22°
3%
9 AM
24°
3%
10 AM
26°
3%
11 AM
26°
3%
12 PM
27°
3%
1 PM
29°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
28°
3%
6 PM
27°
3%
7 PM
27°
3%
7-Day Forecast
Tonight
34° 20°
Rain, 63% chance.
Wed
30° 18°
Mostly Clear.
Thu
28° 17°
Mostly Clear.
Fri
27° 17°
Mostly Cloudy with a 50% chance of rain.
Sat
30° 19°
Partly Cloudy with a 64% chance of rain.
Sun
33° 23°
Clear.
Mon
33° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Rain 63% 6 mph WNW 89%
9 PM 26° Overcast 48% 5 mph NW 94%
10 PM 26° Mostly Cloudy 19% 4 mph NW 93%
11 PM 26° Partly Cloudy 19% 5 mph NNW 91%
12 AM 24° Mostly Clear 9% 7 mph N 88%
1 AM 23° Mostly Clear 3% 7 mph N 88%
2 AM 23° Partly Cloudy 3% 7 mph N 88%
3 AM 22° Mostly Clear 3% 6 mph N 89%
4 AM 22° Clear 3% 6 mph N 90%
5 AM 21° Clear 3% 6 mph N 90%
6 AM 20° Clear 3% 6 mph N 91%
7 AM 21° Clear 3% 7 mph N 88%
8 AM 22° Clear 3% 8 mph N 84%
9 AM 24° Clear 3% 8 mph N 79%
10 AM 26° Mostly Clear 3% 8 mph N 74%
11 AM 26° Mostly Clear 3% 8 mph N 70%
12 PM 27° Partly Cloudy 3% 9 mph N 67%
1 PM 29° Partly Cloudy 3% 9 mph N 66%
2 PM 29° Partly Cloudy 3% 10 mph N 66%
3 PM 29° Partly Cloudy 3% 10 mph N 67%
4 PM 29° Partly Cloudy 3% 10 mph N 68%
5 PM 28° Partly Cloudy 3% 10 mph N 71%
6 PM 27° Partly Cloudy 3% 9 mph N 74%
7 PM 27° Partly Cloudy 3% 9 mph NNE 75%
15-Day Forecast
Today
7/21
Rain
63%
20°
34°
Wed
7/22
Mostly Clear
3%
18°
30°
Thu
7/23
Mostly Clear
3%
17°
28°
Fri
7/24
Mostly Cloudy
50%
17°
27°
Sat
7/25
Partly Cloudy
64%
19°
30°
Sun
7/26
Clear
16%
23°
33°
Mon
7/27
Clear
17%
23°
33°
Tue
7/28
Clear
17%
20°
32°
Wed
7/29
Drizzle
65%
19°
30°
Thu
7/30
Drizzle
44%
16°
29°
Fri
7/31
Clear
51%
16°
29°
Sat
8/1
Drizzle
60%
19°
30°
Sun
8/2
Drizzle
60%
19°
31°
Mon
8/3
Drizzle
60%
20°
32°
Tue
8/4
Drizzle
60%
21°
31°
44
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
44 AQI 8.0 µg/m³
O3
Ground-level ozone
29 AQI 32 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 44 Good 29 44
Thu 31 Good 31 24
Fri 34 Good 34 16
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 Tue Jul 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3122 J/kg
MLCAPE3815 J/kg
MUCAPE4759 J/kg
SBCIN-76 J/kg
MLCIN0 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear36 kt
0–1 km Shear9 kt
Eff. Shear41 kt
0–1 km SRH-50
0–3 km SRH-88
Eff. SRH-88
Storm Motion270° @ 30 kt
0–1 km EHI-1.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.6
Thermo & Levels
PWAT2.22 in
0–3 km LR5.2 °C/km
700–500 LR5.2 °C/km
Total Totals44.7
LCL963 hPa
LFC860 hPa
EL135 hPa
Freezing Lvl17,746 ft