Areal Flood Watch 7:00 AM

Roanoke, Virginia

Last updated: 1:06 AM CDT  ·  Refresh
23°C
Feels like 27°
Partly Cloudy
▲ 29°  /  ▼ 19°
Wind
4 mph WSW
Humidity
92%
Dew Point
22°
Pressure
28.62 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
47%
Sunrise
6:16 AM
Sunset
8:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Roanoke is currently partly cloudy at 24°C. Precipitation is likely — peak probability 83% around 3 AM. Atmospheric instability is elevated (CAPE up to 968 J/kg) — isolated convective development possible. Sunrise: 6:16AM · Sunset: 8:35PM.

Alerts

Areal Flood Watch
Expires 7:00 AM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
77%
3 AM
23°
83%
4 AM
23°
63%
5 AM
23°
43%
6 AM
21°
39%
7 AM
21°
45%
8 AM
21°
47%
9 AM
23°
47%
10 AM
24°
42%
11 AM
25°
54%
12 PM
26°
44%
1 PM
26°
54%
2 PM
27°
63%
3 PM
27°
63%
4 PM
27°
67%
5 PM
27°
46%
6 PM
28°
43%
7 PM
27°
43%
8 PM
26°
40%
9 PM
25°
44%
10 PM
24°
34%
11 PM
23°
45%
12 AM
23°
46%
1 AM
22°
51%
7-Day Forecast
Today
29° 19°
Rain, 77% chance.
Thu
26° 17°
Partly Cloudy with a 40% chance of rain.
Fri
26° 16°
Mostly Cloudy with a 72% chance of rain.
Sat
23° 18°
Rain, 67% chance.
Sun
31° 18°
Rain, 70% chance.
Mon
34° 19°
Rain, 70% chance.
Tue
36° 19°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Partly Cloudy 77% 4 mph WSW 92%
3 AM 23° Rain 83% 6 mph W 94%
4 AM 23° Mostly Cloudy 63% 6 mph WSW 92%
5 AM 23° Partly Cloudy 43% 5 mph SW 92%
6 AM 21° Partly Cloudy 39% 4 mph SW 91%
7 AM 21° Partly Cloudy 45% 4 mph SW 92%
8 AM 21° Partly Cloudy 47% 4 mph SW 91%
9 AM 23° Mostly Cloudy 47% 4 mph SW 82%
10 AM 24° Mostly Cloudy 42% 5 mph WSW 73%
11 AM 25° Mostly Cloudy 54% 5 mph WSW 65%
12 PM 26° Mostly Cloudy 44% 5 mph WSW 63%
1 PM 26° Drizzle 54% 6 mph SW 60%
2 PM 27° Rain 63% 6 mph SW 58%
3 PM 27° Rain 63% 5 mph SW 60%
4 PM 27° Rain 67% 5 mph SW 63%
5 PM 27° Rain 46% 5 mph SSW 67%
6 PM 28° Rain 43% 4 mph SW 69%
7 PM 27° Rain 43% 4 mph WSW 72%
8 PM 26° Rain 40% 4 mph W 76%
9 PM 25° Partly Cloudy 44% 4 mph W 78%
10 PM 24° Partly Cloudy 34% 4 mph W 80%
11 PM 23° Partly Cloudy 45% 4 mph W 81%
12 AM 23° Partly Cloudy 46% 4 mph W 80%
1 AM 22° Mostly Cloudy 51% 4 mph WNW 78%
15-Day Forecast
Today
7/22
Rain
77%
19°
29°
Thu
7/23
Partly Cloudy
40%
17°
26°
Fri
7/24
Mostly Cloudy
72%
16°
26°
Sat
7/25
Rain
67%
18°
23°
Sun
7/26
Rain
70%
18°
31°
Mon
7/27
Rain
70%
19°
34°
Tue
7/28
Rain
71%
19°
36°
Wed
7/29
Drizzle
43%
18°
36°
Thu
7/30
Rain
66%
17°
31°
Fri
7/31
Rain
68%
17°
29°
Sat
8/1
Drizzle
60%
17°
28°
Sun
8/2
Drizzle
60%
17°
29°
Mon
8/3
Drizzle
60%
17°
31°
Tue
8/4
Drizzle
60%
18°
32°
Wed
8/5
Drizzle
60%
19°
32°
55
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
55 AQI 11.1 µg/m³
O3
Ground-level ozone
37 AQI 41 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 37 55
Thu 56 Moderate 41 56
Fri 50 Good 26 50
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, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE958 J/kg
MLCAPE886 J/kg
MUCAPE1066 J/kg
SBCIN-73 J/kg
MLCIN0 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear45 kt
0–1 km Shear32 kt
Eff. Shear45 kt
0–1 km SRH-94
0–3 km SRH-108
Eff. SRH-108
Storm Motion232° @ 39 kt
0–1 km EHI-0.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.7
Thermo & Levels
PWAT1.81 in
0–3 km LR5.0 °C/km
700–500 LR5.9 °C/km
Total Totals47.6
LCL948 hPa
LFC786 hPa
EL195 hPa
Freezing Lvl14,055 ft