Storm Station
Sign in

Seneca, Oregon

City in Grant County, Oregon

Air quality

The air at Seneca

Index 55, moderate, led by fine particles. Read at 9 PM from its reporting area, John Day (OR), 19 miles off.

55Moderate
  • Fine particles (PM2.5)55Moderate-

The days ahead

Yesterday measured 22, good.

Smoke, the next 45 hours

Smoke near the ground peaks at index 60, moderate, Fri 9 PM.

SatSun

Precipitation

What has fallen at Seneca

None in the last 3 days, to Fri 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Seneca, the next 45 hours

Visibility stays 3 miles or more through Sun 5 PM, lowest 4 miles Sun 8 AM.

SatSun

On the radar over Seneca, OregonReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Seneca, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

John DayGCD

At an airfield/18.6 mi away/3,697 ft/983 ft below here

temp, wind, gust, visibility, precip, pressure

Rank20of 1,639

measured daily2 instruments

Canyon City 12.6 SSWOR-GR-4

In a volunteer observer's own ground/9.3 mi away/4,799 ft/119 ft above here

precip, snowfall, snow depth

Rank-

John DayJDRO3

At a cooperative observer's station/19.9 mi away/3,100 ft/1,580 ft below here

snowfall, snow depth, precip, high, low

Rank1,018of 1,639

Station report

The weather at John Day, drawn

The nearest airport reporting now, 18.6 mi from Seneca, Oregon. From its report of Oct 16, 2026, 9:15 PM 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 6DATE2026-10-17IDSR-GCD-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

60.0 F with a dew point of 20.0 F, 21 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 9,000 ft up.

Chart of the air at John Day: temperature 60.0 degrees Fahrenheit and dew point 20.0, 21 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 9,000 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 STATION02,0004,0006,0008,00010,00012,0000 F20 F40 F60 FSATURATES 9,000 FT ABOVE THE STATION, AT 12.2 FTEMPERATURE 60.0 FDEW POINT 20.0 FSPREAD 40.0 FRELATIVE HUMIDITY 21 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 6DATE2026-10-17IDSR-GCD-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southeast (130 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at John Day, north up: blowing from 130 degrees, the southeast, at 7 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 GCDFIG. C THE WIND AT JOHN DAYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 130°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJohn Day, the windSTATION REPORT · ASOS GCDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-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

-

Snow on the ground

Elsewhere in Oregon

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

Near Seneca

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

Near Seneca

River and lake gauges