Severe Thunderstorm Watch 1:00 AM Severe Thunderstorm Watch 1:00 AM Areal Flood Advisory — Essex County, VA, King and Queen County, VA, King William County, VA, Northumberland County, VA, Richmond County, VA, Westmoreland County, VA 1:45 AM Flash Flood Warning — Essex County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Northumberland County, VA, Richmond County, VA 2:15 AM Areal Flood Watch 11:00 PM

King William County, Virginia, United States

Last updated: 12:02 AM CDT  ·  Refresh
23°C
Feels like 27°
Heavy Rain
▲ 29°  /  ▼ 19°
Wind
4 mph SW
Humidity
98%
Dew Point
23°
Pressure
29.66 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
81%
Sunrise
6:03 AM
Sunset
8:25 PM
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WeatherAI™ Analysis

WeatherAI Analysis: King William County is currently heavy rain at 23°C. Precipitation is likely — peak probability 90% around 1 AM. Atmospheric instability is elevated (CAPE up to 1567 J/kg) — isolated convective development possible. Sunrise: 6:03AM · Sunset: 8:25PM.

Alerts

Severe Thunderstorm Watch
Expires 1:00 AM
Severe Thunderstorm Watch
Expires 1:00 AM
Areal Flood Advisory
Essex County, VA, King and Queen County, VA, King William County, VA, Northumberland County, VA, Richmond County, VA, Westmoreland County, VA
Expires 1:45 AM
Flash Flood Warning
Essex County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Northumberland County, VA, Richmond County, VA
Expires 2:15 AM
Areal Flood Watch
Expires 11:00 PM
45 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
90%
2 AM
23°
90%
3 AM
23°
90%
4 AM
23°
84%
5 AM
23°
55%
6 AM
22°
56%
7 AM
22°
56%
8 AM
23°
53%
9 AM
24°
65%
10 AM
26°
69%
11 AM
27°
69%
12 PM
27°
69%
1 PM
28°
69%
2 PM
28°
65%
3 PM
28°
75%
4 PM
28°
81%
5 PM
27°
80%
6 PM
27°
85%
7 PM
26°
90%
8 PM
26°
90%
9 PM
25°
86%
10 PM
24°
86%
11 PM
24°
86%
12 AM
23°
81%
7-Day Forecast
Today
29° 19°
Partly Cloudy with a 90% chance of rain.
Thu
27° 18°
Partly Cloudy with a 77% chance of rain.
Fri
28° 17°
Mostly Cloudy with a 51% chance of rain.
Sat
25° 19°
Drizzle, 60% chance.
Sun
30° 18°
Rain, 82% chance.
Mon
33° 18°
Rain, 63% chance.
Tue
35° 21°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Heavy Rain 90% 4 mph SW 98%
2 AM 23° Rain 90% 5 mph S 99%
3 AM 23° Thunderstorm 90% 6 mph SW 97%
4 AM 23° Heavy Rain 84% 7 mph SSW 95%
5 AM 23° Mostly Cloudy 55% 9 mph SSW 94%
6 AM 22° Mostly Cloudy 56% 9 mph SW 92%
7 AM 22° Partly Cloudy 56% 10 mph SW 91%
8 AM 23° Partly Cloudy 53% 10 mph SW 89%
9 AM 24° Rain 65% 11 mph SW 84%
10 AM 26° Partly Cloudy 69% 11 mph SW 79%
11 AM 27° Mostly Cloudy 69% 11 mph SW 74%
12 PM 27° Heavy Rain 69% 12 mph SW 70%
1 PM 28° Heavy Rain 69% 11 mph SW 66%
2 PM 28° Heavy Rain 65% 11 mph SW 62%
3 PM 28° Partly Cloudy 75% 10 mph SW 64%
4 PM 28° Partly Cloudy 81% 10 mph SSW 66%
5 PM 27° Partly Cloudy 80% 10 mph SSW 68%
6 PM 27° Partly Cloudy 85% 8 mph SSW 74%
7 PM 26° Partly Cloudy 90% 6 mph SSW 79%
8 PM 26° Partly Cloudy 90% 6 mph SSW 84%
9 PM 25° Mostly Cloudy 86% 5 mph SSW 87%
10 PM 24° Heavy Rain 86% 5 mph SSW 91%
11 PM 24° Rain 86% 5 mph SSW 95%
12 AM 23° Rain 81% 3 mph W 95%
15-Day Forecast
Today
7/22
Partly Cloudy
90%
19°
29°
Thu
7/23
Partly Cloudy
77%
18°
27°
Fri
7/24
Mostly Cloudy
51%
17°
28°
Sat
7/25
Drizzle
60%
19°
25°
Sun
7/26
Rain
82%
18°
30°
Mon
7/27
Rain
63%
18°
33°
Tue
7/28
Rain
71%
21°
35°
Wed
7/29
Rain
69%
19°
31°
Thu
7/30
Drizzle
44%
18°
29°
Fri
7/31
Drizzle
51%
17°
29°
Sat
8/1
Drizzle
60%
19°
29°
Sun
8/2
Drizzle
90%
19°
29°
Mon
8/3
Drizzle
60%
20°
31°
Tue
8/4
Drizzle
60%
21°
32°
Wed
8/5
Drizzle
60%
22°
32°
45
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
45 AQI 8.1 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 45 Good 35 45
Thu 51 Moderate 39 51
Fri 28 Good 28 17
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 Wed Jul 22, 03:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE416 J/kg
MLCAPE877 J/kg
MUCAPE1034 J/kg
SBCIN-92 J/kg
MLCIN0 J/kg
Lifted Index-1.8
Kinematics
0–6 km Shear47 kt
0–1 km Shear27 kt
Eff. Shear47 kt
0–1 km SRH-83
0–3 km SRH-118
Eff. SRH-118
Storm Motion222° @ 41 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.1
Thermo & Levels
PWAT2.38 in
0–3 km LR4.6 °C/km
700–500 LR5.4 °C/km
Total Totals47.0
LCL997 hPa
LFC756 hPa
EL235 hPa
Freezing Lvl15,302 ft