Storm Station
Greenhorn, Oregon
49°
Mostly clear· Feels like 49°·Light air 2 mph SSW
Mostly cloudy, with a low around 38. Southeast wind around 6 mph.
-UV
-Air quality
28%Humidity
26%Cloud

What is measuring near here

The 5 instruments nearest Greenhorn, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 5.1 miles away.

measured now3 instruments

Tipton SnotelTIPO3

A snow pillow on a mountain/5.1 mi away/5,150 ft/1,173 ft below here

temp, wind, gust, humidity, pressure

Rank488of 914

OR7 SB at Sumpter MP 25.07OD128

Beside a road/16.4 mi away/4,245 ft/2,078 ft below here

temp, pavement temp, wind, visibility, precip

Rank572of 914

John DayGCD

At an airfield/31.1 mi away/3,697 ft/2,626 ft below here

temp, wind, gust, visibility, precip, pressure

Rank8of 914

measured daily2 instruments

Prairie City 0.2 NEOR-GR-1

In a volunteer observer's own ground/19.9 mi away/3,596 ft/2,727 ft below here

precip, snowfall, snow depth

Rank-

John DayJDRO3

At a cooperative observer's station/30.1 mi away/3,100 ft/3,223 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at John Day, drawn

The nearest airport reporting now, 31.1 mi from Greenhorn. From its report of Sep 27, 2026, 1:55 AM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over John Day, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GCDFIG. A THE SKY OVER JOHN DAYSECTION, 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: 10 MI OR MORE0510TITLEJohn Day, the skySTATION REPORT · ASOS GCDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-GCD-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

42.0 F with a dew point of 24.8 F, 50 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,900 ft up.

Chart of the air at John Day: temperature 42.0 degrees Fahrenheit and dew point 24.8, 50 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,900 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GCDFIG. B THE AIR AT JOHN DAYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00010 F20 F30 F40 F50 FSATURATES 3,900 FT ABOVE THE STATION, AT 21.3 FTEMPERATURE 42.0 FDEW POINT 24.8 FSPREAD 17.2 FRELATIVE HUMIDITY 50 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 POINTTITLEJohn Day, the airSTATION REPORT · ASOS GCDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-GCD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at John Day, north up: blowing from 110 degrees, the east southeast, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT GCDFIG. C THE WIND AT JOHN DAYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJohn Day, the windSTATION REPORT · ASOS GCDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-GCD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Oregon

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

Near Greenhorn

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