Areal Flood Watch 7:00 AM

Williamson County, Middle Tennessee, Tennessee, United States

Last updated: 11:16 PM CDT  ·  Refresh
17°C
Feels like 18°
Overcast
▲ 18°  /  ▼ 13°
Wind
5 mph NE
Humidity
98%
Dew Point
16°
Pressure
29.06 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
93%
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 68% around 11 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°
68%
12 AM
16°
64%
1 AM
16°
67%
2 AM
15°
67%
3 AM
15°
47%
4 AM
14°
48%
5 AM
13°
50%
6 AM
13°
64%
7 AM
13°
43%
8 AM
13°
49%
9 AM
14°
41%
10 AM
14°
29%
11 AM
16°
17%
12 PM
16°
13%
1 PM
21°
8%
2 PM
21°
8%
3 PM
22°
8%
4 PM
23°
6%
5 PM
22°
6%
6 PM
21°
3%
7 PM
20°
3%
8 PM
19°
3%
9 PM
17°
3%
10 PM
17°
3%
7-Day Forecast
Tonight
18° 13°
Overcast with a 68% chance of rain.
Sun
23° 13°
Mostly Cloudy with a 67% 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 with a 22% chance of rain.
Fri
31° 8°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 17° Overcast 68% 5 mph NE 98%
12 AM 16° Overcast 64% 4 mph ENE 97%
1 AM 16° Overcast 67% 4 mph E 97%
2 AM 15° Overcast 67% 3 mph ENE 97%
3 AM 15° Overcast 47% 4 mph NW 97%
4 AM 14° Overcast 48% 4 mph WNW 98%
5 AM 13° Overcast 50% 5 mph WNW 98%
6 AM 13° Overcast 64% 7 mph WNW 97%
7 AM 13° Overcast 43% 9 mph WNW 97%
8 AM 13° Overcast 49% 10 mph WNW 97%
9 AM 14° Overcast 41% 10 mph WNW 96%
10 AM 14° Overcast 29% 11 mph WNW 94%
11 AM 16° Overcast 17% 11 mph WNW 91%
12 PM 16° Mostly Cloudy 13% 12 mph WNW 88%
1 PM 21° Mostly Cloudy 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° Mostly Clear 6% 10 mph WNW 68%
5 PM 22° Mostly Clear 6% 8 mph WNW 71%
6 PM 21° Mostly Clear 3% 6 mph WNW 74%
7 PM 20° 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%
10 PM 17° Mostly Clear 3% 5 mph W 79%
15-Day Forecast
Today
10/10
Overcast
68%
13°
18°
Sun
10/11
Mostly Cloudy
67%
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
22%
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, 03:00'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
SBCAPE10 J/kg
MLCAPE8 J/kg
MUCAPE2 J/kg
SBCIN-6 J/kg
MLCIN-1 J/kg
Lifted Index4.6
Kinematics
0–6 km Shear31 kt
0–1 km Shear17 kt
Eff. Shear—
0–1 km SRH47
0–3 km SRH13
Eff. SRH—
Storm Motion205° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index27.5
Thermo & Levels
PWAT1.41 in
0–3 km LR4.6 °C/km
700–500 LR4.8 °C/km
Total Totals38.1
LCL977 hPa
LFC916 hPa
EL817 hPa
Freezing Lvl11,598 ft