Flood Warning — Brookings County, SD, Hamlin County, SD Flood Warning — Brookings County, SD

Brookings, South Dakota

Last updated: 10:46 PM CDT  ·  Refresh
27°C
Feels like 29°
Clear
▲ 34°  /  ▼ 18°
Wind
9 mph NNE
Humidity
65%
Dew Point
21°
Pressure
28.21 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
5%
Sunrise
5:59 AM
Sunset
9:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Brookings is currently clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1743 J/kg) — isolated convective development possible. Sunrise: 5:59AM · Sunset: 9:07PM.

Alerts

Flood Warning
Brookings County, SD, Hamlin County, SD
Expires
Flood Warning
Brookings County, SD
Expires
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
11 PM
26°
3%
12 AM
24°
3%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
18°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
21°
3%
9 AM
22°
3%
10 AM
24°
3%
11 AM
26°
3%
12 PM
27°
3%
1 PM
30°
3%
2 PM
30°
3%
3 PM
31°
3%
4 PM
31°
3%
5 PM
31°
3%
6 PM
31°
3%
7 PM
29°
3%
8 PM
27°
3%
9 PM
24°
3%
7-Day Forecast
Tonight
34° 18°
Clear.
Sat
32° 18°
Partly Cloudy.
Sun
34° 17°
Partly Cloudy.
Mon
37° 19°
Clear with a 30% chance of rain.
Tue
28° 13°
Clear.
Wed
28° 11°
Clear with a 30% chance of rain.
Thu
28° 13°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Clear 3% 9 mph NNE 65%
11 PM 26° Clear 3% 10 mph NE 64%
12 AM 24° Clear 3% 8 mph NE 66%
1 AM 23° Clear 3% 8 mph NE 69%
2 AM 23° Mostly Clear 3% 8 mph NE 73%
3 AM 22° Mostly Clear 3% 8 mph NE 76%
4 AM 21° Partly Cloudy 3% 7 mph NE 77%
5 AM 18° Partly Cloudy 3% 8 mph NE 77%
6 AM 18° Partly Cloudy 3% 8 mph NE 77%
7 AM 19° Mostly Clear 3% 10 mph NE 71%
8 AM 21° Mostly Clear 3% 10 mph ENE 63%
9 AM 22° Partly Cloudy 3% 10 mph ENE 54%
10 AM 24° Partly Cloudy 3% 10 mph ENE 47%
11 AM 26° Mostly Clear 3% 10 mph ENE 40%
12 PM 27° Mostly Clear 3% 10 mph NE 34%
1 PM 30° Mostly Clear 3% 9 mph NE 31%
2 PM 30° Mostly Clear 3% 9 mph ENE 29%
3 PM 31° Partly Cloudy 3% 9 mph ENE 28%
4 PM 31° Partly Cloudy 3% 9 mph ENE 28%
5 PM 31° Partly Cloudy 3% 9 mph ENE 30%
6 PM 31° Mostly Cloudy 3% 9 mph ENE 31%
7 PM 29° Partly Cloudy 3% 9 mph ENE 38%
8 PM 27° Partly Cloudy 3% 8 mph ENE 45%
9 PM 24° Partly Cloudy 3% 8 mph E 53%
15-Day Forecast
Today
7/17
Clear
3%
18°
34°
Sat
7/18
Partly Cloudy
3%
18°
32°
Sun
7/19
Partly Cloudy
13%
17°
34°
Mon
7/20
Clear
30%
19°
37°
Tue
7/21
Clear
8%
13°
28°
Wed
7/22
Clear
30%
11°
28°
Thu
7/23
Rain
28%
13°
28°
Fri
7/24
Clear
28%
14°
27°
Sat
7/25
Drizzle
44%
13°
32°
Sun
7/26
Rain
68%
16°
31°
Mon
7/27
Clear
60%
15°
31°
Tue
7/28
Drizzle
60%
19°
33°
Wed
7/29
Drizzle
60%
19°
33°
Thu
7/30
Drizzle
60%
19°
33°
Fri
7/31
Drizzle
60%
19°
32°
51
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
51 AQI 9.2 µg/m³
O3
Ground-level ozone
48 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 48 51
Sun 40 Good 40 35
Mon 45 Good 38 45
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 Sat Jul 18, 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
SBCAPE1363 J/kg
MLCAPE2724 J/kg
MUCAPE3708 J/kg
SBCIN-234 J/kg
MLCIN0 J/kg
Lifted Index-4.2
Kinematics
0–6 km Shear16 kt
0–1 km Shear8 kt
Eff. Shear21 kt
0–1 km SRH4
0–3 km SRH-12
Eff. SRH-12
Storm Motion239° @ 13 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.5
Thermo & Levels
PWAT1.86 in
0–3 km LR6.2 °C/km
700–500 LR6.2 °C/km
Total Totals52.3
LCL867 hPa
LFC716 hPa
EL181 hPa
Freezing Lvl14,446 ft