Severe Thunderstorm Watch 11:00 PM

Roanoke, Alabama

Last updated: 10:39 PM CDT  ·  Refresh
26°C
Feels like 28°
Clear
▲ 31°  /  ▼ 21°
Wind
7 mph SSE
Humidity
83%
Dew Point
22°
Pressure
29.05 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
9%
Sunrise
5:47 AM
Sunset
7:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Roanoke is currently clear at 25°C. Precipitation is likely — peak probability 57% around 4 PM. Atmospheric instability is elevated (CAPE up to 1724 J/kg) — isolated convective development possible. Sunrise: 5:47AM · Sunset: 7:48PM.

Alerts

Severe Thunderstorm Watch
Expires 11:00 PM
33 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
11 PM
24°
21%
12 AM
23°
14%
1 AM
23°
3%
2 AM
22°
4%
3 AM
22°
4%
4 AM
22°
4%
5 AM
21°
7%
6 AM
22°
8%
7 AM
23°
16%
8 AM
24°
29%
9 AM
26°
30%
10 AM
27°
33%
11 AM
28°
38%
12 PM
29°
45%
1 PM
31°
49%
2 PM
31°
49%
3 PM
31°
50%
4 PM
31°
56%
5 PM
31°
43%
6 PM
31°
44%
7 PM
30°
40%
8 PM
29°
40%
9 PM
26°
41%
7-Day Forecast
Tonight
31° 21°
Clear.
Wed
32° 21°
Overcast with a 56% chance of rain.
Thu
33° 22°
Rain, 70% chance.
Fri
31° 22°
Heavy Rain, 90% chance.
Sat
29° 21°
Haze with a 90% chance of rain.
Sun
34° 21°
Drizzle, 64% chance.
Mon
36° 23°
Clear with a 30% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 3% 7 mph SSE 83%
11 PM 24° Partly Cloudy 21% 7 mph SSE 86%
12 AM 23° Partly Cloudy 14% 4 mph SSE 87%
1 AM 23° Mostly Cloudy 3% 4 mph SSE 89%
2 AM 22° Mostly Cloudy 4% 4 mph SE 90%
3 AM 22° Overcast 4% 3 mph SSE 92%
4 AM 22° Overcast 4% 3 mph SE 93%
5 AM 21° Overcast 7% 4 mph SE 92%
6 AM 22° Overcast 8% 4 mph SSE 91%
7 AM 23° Overcast 16% 6 mph SSE 87%
8 AM 24° Overcast 29% 7 mph SSE 80%
9 AM 26° Overcast 30% 8 mph S 74%
10 AM 27° Overcast 33% 8 mph S 71%
11 AM 28° Overcast 38% 8 mph S 68%
12 PM 29° Rain 45% 8 mph S 66%
1 PM 31° Rain 49% 8 mph S 67%
2 PM 31° Rain 49% 7 mph S 69%
3 PM 31° Rain 50% 7 mph S 69%
4 PM 31° Mostly Cloudy 56% 6 mph S 70%
5 PM 31° Partly Cloudy 43% 6 mph S 71%
6 PM 31° Partly Cloudy 44% 7 mph S 74%
7 PM 30° Partly Cloudy 40% 7 mph S 76%
8 PM 29° Partly Cloudy 40% 6 mph S 80%
9 PM 26° Mostly Clear 41% 6 mph SSW 83%
15-Day Forecast
Today
7/21
Clear
3%
21°
31°
Wed
7/22
Overcast
56%
21°
32°
Thu
7/23
Rain
70%
22°
33°
Fri
7/24
Heavy Rain
90%
22°
31°
Sat
7/25
Haze
90%
21°
29°
Sun
7/26
Drizzle
64%
21°
34°
Mon
7/27
Clear
30%
23°
36°
Tue
7/28
Clear
31%
23°
37°
Wed
7/29
Thunderstorm
44%
21°
37°
Thu
7/30
Drizzle
44%
18°
34°
Fri
7/31
Drizzle
60%
18°
36°
Sat
8/1
Drizzle
60%
21°
33°
Sun
8/2
Drizzle
60%
21°
34°
Mon
8/3
Drizzle
60%
21°
34°
Tue
8/4
Drizzle
60%
22°
33°
33
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
33 AQI 5.9 µg/m³
O3
Ground-level ozone
31 AQI 33 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 33 Good 31 33
Thu 47 Good 26 47
Fri 53 Moderate 22 53
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, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE71 J/kg
MLCAPE54 J/kg
MUCAPE264 J/kg
SBCIN-253 J/kg
MLCIN0 J/kg
Lifted Index-0.1
Kinematics
0–6 km Shear12 kt
0–1 km Shear13 kt
Eff. Shear14 kt
0–1 km SRH51
0–3 km SRH34
Eff. SRH13
Storm Motion253° @ 11 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.7
Thermo & Levels
PWAT1.85 in
0–3 km LR4.6 °C/km
700–500 LR5.6 °C/km
Total Totals38.9
LCL929 hPa
LFC596 hPa
EL274 hPa
Freezing Lvl16,368 ft