Storm Station
Thornburg, Iowa
60°
Overcast· Feels like 60°·Light air 4 mph SE
Rain showers. Cloudy, with a low around 57. Southeast wind around 5 mph. Chance of precipitation is 80%.
-UV
-Air quality
78%Humidity
86%Cloud

What is measuring near here

The 5 instruments nearest Thornburg, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 8.3 miles away.

measured now3 instruments

Sigourney (IA 92)RSGI4

Beside a road/8.3 mi away/663 ft/214 ft below here

temp, pavement temp, wind, visibility, precip

Rank573of 652

OskaloosaOOA

At an airfield/17.7 mi away/840 ft/37 ft below here

temp, wind, gust, visibility, precip, pressure

Rank208of 652

Red Rock DamRRMI4

At a dam/34.0 mi away/722 ft/155 ft below here

temp, wind, gust, humidity, pressure

Rank197of 652

measured daily2 instruments

Sigourney 0.4 NNEIA-KK-6

In a volunteer observer's own ground/10.6 mi away/787 ft/90 ft below here

precip, snowfall, snow depth

Rank-

SigourneySGYI4

At a cooperative observer's station/10.9 mi away/784 ft/93 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Oskaloosa, drawn

The nearest airport reporting now, 17.7 mi from Thornburg. From its report of Sep 27, 2026, 4:35 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 4 mi.

Section of the sky over Oskaloosa, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. A THE SKY OVER OSKALOOSASECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 4 MI0510TITLEOskaloosa, the skySTATION REPORT · ASOS OOATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-OOA-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

59.4 F with a dew point of 59.0 F, 99 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 100 ft up.

Chart of the air at Oskaloosa: temperature 59.4 degrees Fahrenheit and dew point 59.0, 99 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 100 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. B THE AIR AT OSKALOOSATHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 100 FT ABOVE THE STATION, AT 58.9 FTEMPERATURE AND DEW POINT 59.4 F, 59.0 FRELATIVE HUMIDITY 99 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 POINTTITLEOskaloosa, the airSTATION REPORT · ASOS OOATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-OOA-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Oskaloosa, north up: blowing from 150 degrees, the south southeast, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OOAFIG. C THE WIND AT OSKALOOSAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOskaloosa, the windSTATION REPORT · ASOS OOATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-OOA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Sigourney (SGYI4), 10.9 miles from here, read 26 Sep, 06:00. measured daily

Elsewhere in Iowa

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

Near Thornburg

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