Severe Thunderstorm Watch 11:00 PM Marine Warning — Chesapeake Bay from Drum Point MD to Smith Point VA, AN, Tangier Sound and the inland waters surrounding Bloodsworth Island, AN 12:00 AM

Somerset County, Maryland, United States

Last updated: 10:33 PM CDT  ·  Refresh
27°C
Feels like 26°
Rain
▲ 29°  /  ▼ 21°
Wind
19 mph SSW
Humidity
86%
Dew Point
24°
Pressure
29.78 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
90%
Sunrise
5:57 AM
Sunset
8:22 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Somerset County is currently rain at 26°C. Precipitation is likely — peak probability 90% around 11 PM. Atmospheric instability is elevated (CAPE up to 1837 J/kg) — isolated convective development possible. Sunrise: 5:57AM · Sunset: 8:22PM.

Alerts

Severe Thunderstorm Watch
Expires 11:00 PM
Marine Warning
Chesapeake Bay from Drum Point MD to Smith Point VA, AN, Tangier Sound and the inland waters surrounding Bloodsworth Island, AN
Expires 12:00 AM
37 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
90%
12 AM
27°
90%
1 AM
26°
90%
2 AM
26°
90%
3 AM
26°
84%
4 AM
26°
78%
5 AM
24°
60%
6 AM
24°
61%
7 AM
24°
59%
8 AM
24°
60%
9 AM
24°
51%
10 AM
25°
52%
11 AM
25°
55%
12 PM
26°
60%
1 PM
27°
66%
2 PM
27°
69%
3 PM
27°
65%
4 PM
27°
65%
5 PM
28°
65%
6 PM
27°
71%
7 PM
27°
67%
8 PM
27°
72%
9 PM
27°
73%
10 PM
26°
71%
7-Day Forecast
Tonight
29° 21°
Rain, 90% chance.
Wed
28° 21°
Mostly Cloudy with a 90% chance of rain.
Thu
27° 20°
Partly Cloudy with a 39% chance of rain.
Fri
27° 20°
Mostly Cloudy with a 44% chance of rain.
Sat
26° 19°
Overcast with a 45% chance of rain.
Sun
27° 19°
Rain, 70% chance.
Mon
28° 22°
Rain, 71% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Rain 90% 19 mph SSW 86%
12 AM 27° Rain 90% 20 mph SW 88%
1 AM 26° Heavy Rain 90% 18 mph SW 90%
2 AM 26° Heavy Rain 90% 17 mph SW 91%
3 AM 26° Heavy Rain 84% 18 mph SW 90%
4 AM 26° Overcast 78% 24 mph SSW 89%
5 AM 24° Overcast 60% 26 mph SW 89%
6 AM 24° Mostly Cloudy 61% 24 mph SW 88%
7 AM 24° Mostly Cloudy 59% 23 mph SW 87%
8 AM 24° Mostly Cloudy 60% 22 mph SW 86%
9 AM 24° Mostly Cloudy 51% 20 mph SW 85%
10 AM 25° Mostly Cloudy 52% 19 mph SW 84%
11 AM 25° Overcast 55% 18 mph SW 82%
12 PM 26° Overcast 60% 17 mph SW 81%
1 PM 27° Overcast 66% 16 mph SW 80%
2 PM 27° Overcast 69% 15 mph SSW 80%
3 PM 27° Mostly Cloudy 65% 14 mph SSW 80%
4 PM 27° Mostly Cloudy 65% 14 mph SSW 80%
5 PM 28° Partly Cloudy 65% 13 mph SSW 80%
6 PM 27° Partly Cloudy 71% 11 mph SSW 81%
7 PM 27° Partly Cloudy 67% 10 mph SW 83%
8 PM 27° Partly Cloudy 72% 10 mph SW 84%
9 PM 27° Mostly Cloudy 73% 9 mph SW 84%
10 PM 26° Heavy Rain 71% 10 mph SW 85%
15-Day Forecast
Today
7/21
Rain
90%
21°
29°
Wed
7/22
Mostly Cloudy
90%
21°
28°
Thu
7/23
Partly Cloudy
39%
20°
27°
Fri
7/24
Mostly Cloudy
44%
20°
27°
Sat
7/25
Overcast
45%
19°
26°
Sun
7/26
Rain
70%
19°
27°
Mon
7/27
Rain
71%
22°
28°
Tue
7/28
Thunderstorm
71%
22°
29°
Wed
7/29
Rain
69%
21°
27°
Thu
7/30
Drizzle
44%
20°
27°
Fri
7/31
Drizzle
60%
20°
27°
Sat
8/1
Drizzle
60%
21°
27°
Sun
8/2
Drizzle
60%
22°
26°
Mon
8/3
Drizzle
60%
22°
27°
Tue
8/4
Drizzle
60%
23°
28°
37
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
33 AQI 6.0 µg/m³
O3
Ground-level ozone
Dominant
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 37 33
Thu 42 Good 42 22
Fri 37 Good 37 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, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1861 J/kg
MLCAPE1034 J/kg
MUCAPE1861 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear40 kt
0–1 km Shear30 kt
Eff. Shear46 kt
0–1 km SRH-22
0–3 km SRH-14
Eff. SRH-14
Storm Motion225° @ 48 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.4
Thermo & Levels
PWAT2.37 in
0–3 km LR5.6 °C/km
700–500 LR5.7 °C/km
Total Totals47.9
LCL969 hPa
LFC1008 hPa
EL165 hPa
Freezing Lvl15,207 ft