Areal Flood Watch 5:00 PM

Barnstable County, Massachusetts, United States

Last updated: 3:49 PM CDT  ·  Refresh
20°C
Feels like 21°
Heavy Rain
▲ 21°  /  ▼ 19°
Wind
8 mph NE
Humidity
97%
Dew Point
20°
Pressure
29,80 inHg
Visibility
7 mi
UV Index
1,6
Cloud Cover
98%
Sunrise
6:19 AM
Sunset
6:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Barnstable County is currently heavy rain at 20°C. Precipitation is likely — peak probability 78% around 4 PM. Sunrise: 6:19AM · Sunset: 6:53PM.

Alerts

Areal Flood Watch
Expires 5:00 PM
32 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
77%
5 PM
21°
50%
6 PM
20°
51%
7 PM
20°
35%
8 PM
19°
15%
9 PM
19°
17%
10 PM
19°
14%
11 PM
19°
14%
12 AM
19°
24%
1 AM
19°
24%
2 AM
19°
37%
3 AM
19°
27%
4 AM
19°
27%
5 AM
19°
28%
6 AM
19°
28%
7 AM
19°
25%
8 AM
20°
25%
9 AM
20°
22%
10 AM
20°
23%
11 AM
21°
9%
12 PM
21°
10%
1 PM
21°
3%
2 PM
21°
3%
3 PM
21°
3%
7-Day Forecast
Today
21° 19°
Heavy Rain, 77% chance.
Mon
21° 17°
Partly Cloudy with a 27% chance of rain.
Tue
19° 14°
Clear.
Wed
20° 12°
Partly Cloudy.
Thu
20° 18°
Clear with a 35% chance of rain.
Fri
19° 17°
Rain, 81% chance.
Sat
21° 17°
Clear with a 68% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 20° Heavy Rain 77% 8 mph NE 97%
5 PM 21° Rain 50% 7 mph N 97%
6 PM 20° Rain 51% 6 mph N 97%
7 PM 20° Mostly Cloudy 35% 6 mph NW 98%
8 PM 19° Partly Cloudy 15% 7 mph WNW 98%
9 PM 19° Partly Cloudy 17% 9 mph WNW 98%
10 PM 19° Haze 14% 9 mph WNW 98%
11 PM 19° Partly Cloudy 14% 8 mph W 98%
12 AM 19° Partly Cloudy 24% 6 mph WSW 98%
1 AM 19° Partly Cloudy 24% 6 mph SW 98%
2 AM 19° Partly Cloudy 37% 7 mph SW 97%
3 AM 19° Mostly Cloudy 27% 7 mph SW 97%
4 AM 19° Partly Cloudy 27% 8 mph WSW 97%
5 AM 19° Partly Cloudy 28% 8 mph WSW 95%
6 AM 19° Mostly Cloudy 28% 9 mph W 93%
7 AM 19° Mostly Cloudy 25% 10 mph WNW 90%
8 AM 20° Mostly Cloudy 25% 11 mph NW 86%
9 AM 20° Mostly Cloudy 22% 12 mph NW 82%
10 AM 20° Partly Cloudy 23% 12 mph NW 78%
11 AM 21° Partly Cloudy 9% 13 mph NW 73%
12 PM 21° Partly Cloudy 10% 14 mph NW 68%
1 PM 21° Mostly Clear 3% 14 mph NW 63%
2 PM 21° Mostly Clear 3% 14 mph NW 62%
3 PM 21° Mostly Clear 3% 13 mph NW 63%
15-Day Forecast
Today
9/13
Heavy Rain
77%
19°
21°
Mon
9/14
Partly Cloudy
27%
17°
21°
Tue
9/15
Clear
3%
14°
19°
Wed
9/16
Partly Cloudy
16%
12°
20°
Thu
9/17
Clear
35%
18°
20°
Fri
9/18
Rain
81%
17°
19°
Sat
9/19
Clear
68%
17°
21°
Sun
9/20
Rain
90%
14°
20°
Mon
9/21
Drizzle
60%
14°
16°
Tue
9/22
Drizzle
60%
14°
17°
Wed
9/23
Drizzle
60%
13°
17°
Thu
9/24
Clear
60%
16°
17°
Fri
9/25
Drizzle
60%
16°
18°
Sat
9/26
Drizzle
60%
15°
17°
Sun
9/27
Drizzle
60%
14°
17°
32
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
14 AQI 2.5 µg/m³
O3
Ground-level ozone
Dominant
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 32 Good 32 14
Tue 31 Good 31 19
Wed 23 Good 23 7
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid dim. sept. 13, 19:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE96 J/kg
MUCAPE228 J/kg
SBCIN—
MLCIN-29 J/kg
Lifted Index1.6
Kinematics
0–6 km Shear30 kt
0–1 km Shear9 kt
Eff. Shear19 kt
0–1 km SRH3
0–3 km SRH67
Eff. SRH59
Storm Motion268° @ 21 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.4
Thermo & Levels
PWAT2.20 in
0–3 km LR4.3 °C/km
700–500 LR5.3 °C/km
Total Totals44.5
LCL1002 hPa
LFC—
EL—
Freezing Lvl13,973 ft