Flood Advisory — Chesterfield County, VA, Essex County, VA, Gloucester County, VA, Hanover County, VA, Henrico County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Middlesex County, VA, New Kent County, VA, Northumberland County, VA, City of Richmond County, VA 3:45 AM Flood Watch 11:00 PM

Lancaster County, Virginia, United States

Last updated: 2:25 AM CDT  ·  Refresh
23°C
Feels like 27°
Overcast
▲ 31°  /  ▼ 19°
Wind
6 mph SW
Humidity
96%
Dew Point
23°
Pressure
29.70 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
94%
Sunrise
6:01 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lancaster County is currently overcast at 23°C. Precipitation is likely — peak probability 90% around 3 AM. Atmospheric instability is elevated (CAPE up to 1696 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 8:22PM.

Alerts

Flood Advisory
Chesterfield County, VA, Essex County, VA, Gloucester County, VA, Hanover County, VA, Henrico County, VA, King and Queen County, VA, King William County, VA, Lancaster County, VA, Middlesex County, VA, New Kent County, VA, Northumberland County, VA, City of Richmond County, VA
Expires 3:45 AM
Flood Watch
Expires 11:00 PM
33 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
90%
4 AM
23°
77%
5 AM
23°
39%
6 AM
23°
35%
7 AM
24°
39%
8 AM
25°
45%
9 AM
26°
49%
10 AM
27°
54%
11 AM
28°
48%
12 PM
29°
49%
1 PM
29°
53%
2 PM
29°
67%
3 PM
29°
77%
4 PM
28°
67%
5 PM
27°
62%
6 PM
26°
76%
7 PM
26°
73%
8 PM
25°
86%
9 PM
25°
86%
10 PM
24°
90%
11 PM
24°
90%
12 AM
24°
86%
1 AM
24°
77%
2 AM
23°
77%
7-Day Forecast
Today
31° 19°
Mostly Cloudy with a 90% chance of rain.
Thu
27° 19°
Mostly Cloudy with a 75% chance of rain.
Fri
28° 19°
Mostly Clear with a 31% chance of rain.
Sat
26° 18°
Overcast with a 44% chance of rain.
Sun
31° 18°
Drizzle, 82% chance.
Mon
34° 21°
Rain, 70% chance.
Tue
34° 21°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Overcast 90% 6 mph SW 96%
4 AM 23° Overcast 77% 8 mph SSW 96%
5 AM 23° Overcast 39% 9 mph SSW 94%
6 AM 23° Mostly Cloudy 35% 10 mph SSW 92%
7 AM 24° Mostly Cloudy 39% 11 mph SW 90%
8 AM 25° Mostly Cloudy 45% 11 mph SW 87%
9 AM 26° Mostly Cloudy 49% 12 mph SW 82%
10 AM 27° Mostly Cloudy 54% 12 mph SW 77%
11 AM 28° Mostly Cloudy 48% 12 mph SW 73%
12 PM 29° Mostly Cloudy 49% 12 mph SW 70%
1 PM 29° Mostly Cloudy 53% 12 mph SW 67%
2 PM 29° Mostly Cloudy 67% 11 mph SW 67%
3 PM 29° Partly Cloudy 77% 11 mph SW 69%
4 PM 28° Partly Cloudy 67% 12 mph SW 71%
5 PM 27° Partly Cloudy 62% 11 mph SSW 74%
6 PM 26° Partly Cloudy 76% 10 mph SW 78%
7 PM 26° Partly Cloudy 73% 8 mph SW 83%
8 PM 25° Partly Cloudy 86% 6 mph WSW 86%
9 PM 25° Mostly Cloudy 86% 6 mph WSW 87%
10 PM 24° Rain 90% 5 mph SW 89%
11 PM 24° Rain 90% 5 mph WSW 92%
12 AM 24° Rain 86% 5 mph WSW 94%
1 AM 24° Rain 77% 6 mph W 96%
2 AM 23° Rain 77% 7 mph WNW 97%
15-Day Forecast
Today
7/22
Mostly Cloudy
90%
19°
31°
Thu
7/23
Mostly Cloudy
75%
19°
27°
Fri
7/24
Mostly Clear
31%
19°
28°
Sat
7/25
Overcast
44%
18°
26°
Sun
7/26
Drizzle
82%
18°
31°
Mon
7/27
Rain
70%
21°
34°
Tue
7/28
Rain
63%
21°
34°
Wed
7/29
Drizzle
69%
21°
33°
Thu
7/30
Rain
66%
21°
31°
Fri
7/31
Rain
64%
20°
29°
Sat
8/1
Drizzle
60%
21°
29°
Sun
8/2
Drizzle
60%
21°
29°
Mon
8/3
Rain
90%
21°
29°
Tue
8/4
Drizzle
60%
22°
30°
Wed
8/5
Drizzle
60%
22°
31°
33
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
33 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 33 Good 33 28
Thu 40 Good 40 38
Fri 30 Good 30 26
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, 06:00'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
SBCAPE460 J/kg
MLCAPE968 J/kg
MUCAPE1361 J/kg
SBCIN-59 J/kg
MLCIN0 J/kg
Lifted Index-1.3
Kinematics
0–6 km Shear48 kt
0–1 km Shear31 kt
Eff. Shear48 kt
0–1 km SRH-43
0–3 km SRH-69
Eff. SRH-69
Storm Motion229° @ 42 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index40.2
Thermo & Levels
PWAT2.53 in
0–3 km LR5.2 °C/km
700–500 LR4.7 °C/km
Total Totals46.7
LCL993 hPa
LFC801 hPa
EL232 hPa
Freezing Lvl15,131 ft