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Twin Brooks, South Dakota

Town in Grant County, South Dakota

Air quality

The air at Twin Brooks

Index 23, good, led by fine particles. Read at 5 AM from its reporting area, Watertown (SD), 27 miles off.

23Good
  • Fine particles (PM2.5)23Good-
  • Ozone19Good-
  • Coarse particles (PM10)6Good-

The days ahead

Yesterday measured 28, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Twin Brooks

0.19 in in the last 24 hours, 0.33 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.19in
Last 3 days
0.33in

Visibility

How far you can see at Twin Brooks, the next 45 hours

Visibility stays 10 miles or more through Sun 1 AM.

FriSat

On the radar over Twin Brooks, South DakotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Twin Brooks, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.9 miles away.

measured now3 instruments

Milbank1D1

At an airfield/10.6 mi away/1,122 ft/139 ft below here

temp, wind, gust, visibility, precip, pressure

Rank165of 806

Marvin 9SWMVNS2

At a river or reservoir gauge/14.2 mi away/1,924 ft/663 ft above here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

MilbankMLBS2

At a cooperative observer's station/7.6 mi away/1,142 ft/119 ft below here

snowfall, snow depth, precip, high, low

Rank24of 806

Station report

The weather at Milbank, drawn

The nearest airport reporting now, 10.6 mi from Twin Brooks, South Dakota. From its report of Oct 16, 2026, 5:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 3,000 ft; the ceiling is 3,000 ft; visibility 10 mi or more.

Section of the sky over Milbank, height above the station to scale: overcast cloud with its base at 3,000 feet, the ceiling at 3,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. A THE SKY OVER MILBANKSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 3,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMilbank, the skySTATION REPORT · ASOS 1D1TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-1D1-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

42.8 F with a dew point of 39.2 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 3,000 ft.

Chart of the air at Milbank: temperature 42.8 degrees Fahrenheit and dew point 39.2, 87 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 3,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. B THE AIR AT MILBANKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 FSATURATES 800 FT ABOVE THE STATION, AT 38.4 FLOWEST CLOUD REPORTED, OVC 3,000 FTTEMPERATURE 42.8 FDEW POINT 39.2 FSPREAD 3.6 FRELATIVE HUMIDITY 87 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEMilbank, the airSTATION REPORT · ASOS 1D1TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-1D1-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 29 mph, gusting 39 mph: force 6, a strong breeze on the Beaufort scale. The strongest gust today was 48 mph.

Plan of the wind at Milbank, north up: blowing from 340 degrees, the north northwest, at 29 miles an hour, gusting 39; beside it the Beaufort scale from calm to hurricane force, force 6, strong breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 1D1FIG. C THE WIND AT MILBANKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE25NOW, 29 MPH7NEAR GALE328GALE39GUST, 39 MPH9STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMilbank, the windSTATION REPORT · ASOS 1D1TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-1D1-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Milbank, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Milbank (MLBS2), 7.6 miles from here, read 15 Oct, 07:30. measured daily

Elsewhere in South Dakota

24 places, each with its own forecast and its own instruments.

Near Twin Brooks

The nearest places, each with its own forecast and the instruments nearest it.

Near Twin Brooks

River and lake gauges