Severe Thunderstorm Watch 7:00 PM

Cass County, Michigan, United States

Last updated: 6:08 PM CDT  ·  Refresh
23°C
Feels like 24°
Rain
▲ 28°  /  ▼ 20°
Wind
10 mph SSW
Humidity
86%
Dew Point
21°
Pressure
28.83 inHg
Visibility
7 mi
UV Index
2.9
Cloud Cover
79%
Sunrise
6:32 AM
Sunset
9:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cass County is currently rain at 23°C. Precipitation is likely — peak probability 63% around 7 PM. Atmospheric instability is elevated (CAPE up to 827 J/kg) — isolated convective development possible. Sunrise: 6:32AM · Sunset: 9:07PM.

Alerts

Severe Thunderstorm Watch
Expires 7:00 PM
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
63%
8 PM
25°
51%
9 PM
24°
39%
10 PM
23°
45%
11 PM
23°
44%
12 AM
23°
49%
1 AM
23°
57%
2 AM
23°
34%
3 AM
23°
27%
4 AM
22°
22%
5 AM
22°
22%
6 AM
20°
22%
7 AM
20°
10%
8 AM
20°
7%
9 AM
21°
10%
10 AM
21°
14%
11 AM
22°
13%
12 PM
23°
4%
1 PM
24°
4%
2 PM
24°
4%
3 PM
24°
4%
4 PM
24°
4%
5 PM
23°
4%
6 PM
24°
5%
7-Day Forecast
Tonight
28° 20°
Rain, 63% chance.
Tue
27° 17°
Fog with a 57% chance of rain.
Wed
28° 14°
Clear.
Thu
28° 16°
Clear with a 32% chance of rain.
Fri
27° 19°
Partly Cloudy with a 34% chance of rain.
Sat
24° 17°
Rain, 83% chance.
Sun
26° 16°
Partly Cloudy with a 53% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 63% 10 mph SSW 86%
8 PM 25° Partly Cloudy 51% 7 mph SSW 85%
9 PM 24° Partly Cloudy 39% 9 mph S 87%
10 PM 23° Mostly Cloudy 45% 10 mph S 90%
11 PM 23° Partly Cloudy 44% 9 mph S 92%
12 AM 23° Partly Cloudy 49% 7 mph SSW 92%
1 AM 23° Partly Cloudy 57% 6 mph SW 93%
2 AM 23° Mostly Cloudy 34% 8 mph W 93%
3 AM 23° Mostly Cloudy 27% 6 mph WNW 95%
4 AM 22° Mostly Cloudy 22% 8 mph NW 96%
5 AM 22° Mostly Cloudy 22% 9 mph NNW 98%
6 AM 20° Mostly Cloudy 22% 9 mph NNW 96%
7 AM 20° Fog 10% 10 mph N 94%
8 AM 20° Fog 7% 11 mph N 93%
9 AM 21° Fog 10% 10 mph N 90%
10 AM 21° Fog 14% 10 mph N 86%
11 AM 22° Haze 13% 10 mph N 82%
12 PM 23° Mostly Cloudy 4% 10 mph NNW 75%
1 PM 24° Partly Cloudy 4% 10 mph NNW 69%
2 PM 24° Partly Cloudy 4% 11 mph NNW 65%
3 PM 24° Partly Cloudy 4% 12 mph NNW 65%
4 PM 24° Partly Cloudy 4% 13 mph NNW 66%
5 PM 23° Mostly Clear 4% 14 mph NW 67%
6 PM 24° Clear 5% 13 mph NW 68%
15-Day Forecast
Today
7/27
Rain
63%
20°
28°
Tue
7/28
Fog
57%
17°
27°
Wed
7/29
Clear
3%
14°
28°
Thu
7/30
Clear
32%
16°
28°
Fri
7/31
Partly Cloudy
34%
19°
27°
Sat
8/1
Rain
83%
17°
24°
Sun
8/2
Partly Cloudy
53%
16°
26°
Mon
8/3
Clear
21%
16°
28°
Tue
8/4
Drizzle
47%
18°
29°
Wed
8/5
Rain
66%
19°
28°
Thu
8/6
Rain
64%
18°
28°
Fri
8/7
Drizzle
60%
19°
29°
Sat
8/8
Drizzle
60%
19°
28°
Sun
8/9
Drizzle
90%
18°
27°
Mon
8/10
Drizzle
60%
18°
27°
50
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
50 AQI 9.0 µg/m³
O3
Ground-level ozone
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 50 Good 48 50
Wed 35 Good 35 23
Thu 39 Good 39 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 Mon Jul 27, 21:00'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
SBCAPE380 J/kg
MLCAPE60 J/kg
MUCAPE380 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.9
Kinematics
0–6 km Shear60 kt
0–1 km Shear21 kt
Eff. Shear45 kt
0–1 km SRH207
0–3 km SRH107
Eff. SRH107
Storm Motion268° @ 35 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.9
STP (eff)0.4
Supercell0.9
K-Index37.2
Thermo & Levels
PWAT1.99 in
0–3 km LR4.7 °C/km
700–500 LR6.4 °C/km
Total Totals45.8
LCL945 hPa
LFC976 hPa
EL302 hPa
Freezing Lvl14,134 ft