Severe Thunderstorm Watch 5:00 AM

Plymouth County, Iowa, United States

Last updated: 3:49 AM CDT  ·  Refresh
20°C
Feels like 20°
Rain
▲ 34°  /  ▼ 20°
Wind
9 mph ESE
Humidity
91%
Dew Point
19°
Pressure
28.58 inHg
Visibility
5 mi
UV Index
0.0
Cloud Cover
86%
Sunrise
6:50 AM
Sunset
7:57 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Plymouth County is currently rain at 20°C. Precipitation is likely — peak probability 73% around 3 AM. Atmospheric instability is elevated (CAPE up to 1929 J/kg) — isolated convective development possible. Sunrise: 6:50AM · Sunset: 7:57PM.

Alerts

Severe Thunderstorm Watch
Expires 5:00 AM
41 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
73%
4 AM
20°
48%
5 AM
18°
10%
6 AM
18°
9%
7 AM
19°
7%
8 AM
21°
7%
9 AM
21°
7%
10 AM
23°
4%
11 AM
26°
4%
12 PM
28°
3%
1 PM
32°
5%
2 PM
33°
8%
3 PM
33°
8%
4 PM
33°
17%
5 PM
34°
17%
6 PM
33°
18%
7 PM
31°
26%
8 PM
29°
35%
9 PM
27°
36%
10 PM
24°
36%
11 PM
24°
41%
12 AM
23°
39%
1 AM
24°
39%
2 AM
23°
39%
7-Day Forecast
Today
34° 20°
Clear with a 73% chance of rain.
Thu
38° 20°
Clear with a 44% chance of rain.
Fri
38° 21°
Mostly Clear with a 28% chance of rain.
Sat
37° 21°
Mostly Clear with a 49% chance of rain.
Sun
38° 21°
Drizzle, 64% chance.
Mon
37° 20°
Rain, 82% chance.
Tue
35° 18°
Clear with a 53% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 20° Rain 73% 9 mph ESE 91%
4 AM 20° Partly Cloudy 48% 4 mph ESE 91%
5 AM 18° Mostly Clear 10% 4 mph SE 93%
6 AM 18° Clear 9% 4 mph SSE 94%
7 AM 19° Clear 7% 4 mph SE 89%
8 AM 21° Clear 7% 6 mph SE 82%
9 AM 21° Clear 7% 8 mph SE 73%
10 AM 23° Clear 4% 8 mph SSE 64%
11 AM 26° Clear 4% 8 mph SSE 55%
12 PM 28° Clear 3% 9 mph S 45%
1 PM 32° Clear 5% 10 mph S 41%
2 PM 33° Clear 8% 10 mph S 38%
3 PM 33° Clear 8% 10 mph S 36%
4 PM 33° Clear 17% 9 mph S 36%
5 PM 34° Mostly Clear 17% 8 mph S 38%
6 PM 33° Mostly Clear 18% 6 mph S 41%
7 PM 31° Partly Cloudy 26% 6 mph SSE 48%
8 PM 29° Partly Cloudy 35% 6 mph SSE 56%
9 PM 27° Partly Cloudy 36% 6 mph SSE 63%
10 PM 24° Partly Cloudy 36% 6 mph SSE 68%
11 PM 24° Partly Cloudy 41% 7 mph SSE 72%
12 AM 23° Rain 39% 8 mph SSE 76%
1 AM 24° Rain 39% 6 mph SSE 78%
2 AM 23° Rain 39% 6 mph SE 81%
15-Day Forecast
Today
9/2
Clear
73%
20°
34°
Thu
9/3
Clear
44%
20°
38°
Fri
9/4
Mostly Clear
28%
21°
38°
Sat
9/5
Mostly Clear
49%
21°
37°
Sun
9/6
Drizzle
64%
21°
38°
Mon
9/7
Rain
82%
20°
37°
Tue
9/8
Clear
53%
18°
35°
Wed
9/9
Drizzle
72%
15°
30°
Thu
9/10
Drizzle
44%
16°
29°
Fri
9/11
Drizzle
68%
14°
32°
Sat
9/12
Drizzle
60%
16°
30°
Sun
9/13
Drizzle
60%
16°
29°
Mon
9/14
Clear
60%
15°
29°
Tue
9/15
Drizzle
60%
15°
29°
Wed
9/16
Drizzle
60%
15°
29°
41
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
34 AQI 6.1 µg/m³
O3
Ground-level ozone
Dominant
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 41 Good 41 34
Thu 43 Good 43 35
Fri 46 Good 46 32
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 Sep 2, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE5 J/kg
MLCAPE807 J/kg
MUCAPE1532 J/kg
SBCIN-497 J/kg
MLCIN-233 J/kg
Lifted Index0.5
Kinematics
0–6 km Shear40 kt
0–1 km Shear30 kt
Eff. Shear24 kt
0–1 km SRH116
0–3 km SRH169
Eff. SRH150
Storm Motion284° @ 31 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell2.9
K-Index38.8
Thermo & Levels
PWAT1.97 in
0–3 km LR4.3 °C/km
700–500 LR6.2 °C/km
Total Totals50.5
LCL949 hPa
LFC640 hPa
EL557 hPa
Freezing Lvl13,310 ft