Areal Flood Watch 7:00 AM

Williamson County, Middle Tennessee, Tennessee, United States

Last updated: 10:19 PM CDT  ·  Refresh
17°C
Feels like 18°
Overcast
▲ 18°  /  ▼ 13°
Wind
4 mph NNE
Humidity
98%
Dew Point
16°
Pressure
29.06 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
89%
Sunrise
6:50 AM
Sunset
6:18 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Williamson County is currently overcast at 17°C. Precipitation is likely — peak probability 88% around 10 PM. Sunrise: 6:50AM · Sunset: 6:18PM.

Alerts

Areal Flood Watch
Expires 7:00 AM
42 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
17°
87%
11 PM
16°
64%
12 AM
16°
64%
1 AM
16°
63%
2 AM
15°
52%
3 AM
14°
63%
4 AM
14°
63%
5 AM
13°
64%
6 AM
13°
51%
7 AM
13°
44%
8 AM
13°
62%
9 AM
14°
53%
10 AM
14°
17%
11 AM
16°
18%
12 PM
16°
13%
1 PM
21°
8%
2 PM
21°
8%
3 PM
22°
8%
4 PM
23°
6%
5 PM
21°
6%
6 PM
21°
3%
7 PM
19°
3%
8 PM
19°
3%
9 PM
17°
3%
7-Day Forecast
Tonight
18° 13°
Overcast with a 87% chance of rain.
Sun
23° 13°
Mostly Cloudy with a 63% chance of rain.
Mon
32° 12°
Clear.
Tue
34° 14°
Clear.
Wed
35° 16°
Clear with a 27% chance of rain.
Thu
33° 18°
Mostly Clear.
Fri
31° 8°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 17° Overcast 87% 4 mph NNE 98%
11 PM 16° Overcast 64% 5 mph NE 97%
12 AM 16° Overcast 64% 4 mph ENE 97%
1 AM 16° Overcast 63% 4 mph ENE 97%
2 AM 15° Overcast 52% 3 mph NE 97%
3 AM 14° Overcast 63% 4 mph WNW 97%
4 AM 14° Overcast 63% 5 mph WNW 98%
5 AM 13° Overcast 64% 6 mph WNW 98%
6 AM 13° Overcast 51% 7 mph WNW 97%
7 AM 13° Overcast 44% 8 mph WNW 97%
8 AM 13° Overcast 62% 10 mph WNW 97%
9 AM 14° Overcast 53% 10 mph WNW 96%
10 AM 14° Overcast 17% 11 mph WNW 94%
11 AM 16° Overcast 18% 11 mph WNW 91%
12 PM 16° Overcast 13% 12 mph WNW 88%
1 PM 21° Overcast 8% 12 mph WNW 84%
2 PM 21° Mostly Cloudy 8% 11 mph WNW 78%
3 PM 22° Partly Cloudy 8% 11 mph WNW 72%
4 PM 23° Partly Cloudy 6% 10 mph WNW 68%
5 PM 21° Partly Cloudy 6% 8 mph WNW 71%
6 PM 21° Mostly Clear 3% 6 mph WNW 74%
7 PM 19° Mostly Clear 3% 5 mph W 76%
8 PM 19° Mostly Clear 3% 5 mph W 77%
9 PM 17° Mostly Clear 3% 5 mph W 78%
15-Day Forecast
Today
10/10
Overcast
87%
13°
18°
Sun
10/11
Mostly Cloudy
63%
13°
23°
Mon
10/12
Clear
3%
12°
32°
Tue
10/13
Clear
7%
14°
34°
Wed
10/14
Clear
27%
16°
35°
Thu
10/15
Mostly Clear
17%
18°
33°
Fri
10/16
Mostly Clear
18%
8°
31°
Sat
10/17
Partly Cloudy
15%
2°
17°
Sun
10/18
Partly Cloudy
3%
1°
17°
Mon
10/19
Overcast
3%
3°
21°
Tue
10/20
Mostly Cloudy
3%
6°
24°
Wed
10/21
Drizzle
60%
8°
26°
Thu
10/22
Clear
60%
9°
26°
Fri
10/23
Drizzle
60%
9°
24°
Sat
10/24
Clear
60%
8°
24°
42
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
17 AQI 3.1 µg/m³
O3
Ground-level ozone
Dominant
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 42 Good 42 17
Mon 44 Good 44 11
Tue 51 Moderate 51 31
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 Sun Oct 11, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2 J/kg
MLCAPE11 J/kg
MUCAPE0 J/kg
SBCIN-6 J/kg
MLCIN0 J/kg
Lifted Index4.3
Kinematics
0–6 km Shear30 kt
0–1 km Shear12 kt
Eff. Shear—
0–1 km SRH54
0–3 km SRH138
Eff. SRH—
Storm Motion201° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index28.2
Thermo & Levels
PWAT1.43 in
0–3 km LR4.5 °C/km
700–500 LR4.9 °C/km
Total Totals39.4
LCL977 hPa
LFC901 hPa
EL834 hPa
Freezing Lvl12,119 ft