Storm Station
Sign in

Orrtanna, Pennsylvania

Community in Adams County, Pennsylvania

Air quality

The air at Orrtanna

Index 16, good, led by ozone. Read at 3 AM from its reporting area, Maryland Piedmont (MD), 25 miles off.

16Good
  • Fine particles (PM2.5)-6.4 mi
  • Ozone16Good-

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 19, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Orrtanna

0.05 in in the last 24 hours, 0.07 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.05in
Last 3 days
0.07in

Visibility

How far you can see at Orrtanna, the next 41 hours

Mist or haze: visibility falls to 3 miles Fri 6 AM.

FriSat

On the radar over Orrtanna, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Orrtanna, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

measured daily2 instruments

Cashtown 1SORTP1

At a cooperative observer's station/1.8 mi away/719 ft/38 ft above here

snowfall, snow depth, precip, high, low

Rank274of 1,383

Station report

The weather at Liberty - Raven Rock, drawn

The nearest airport reporting now, 8.8 mi from Orrtanna, Pennsylvania. From its report of Oct 16, 2026, 3:10 AM local time: 3 of its 6 sheets.

The sky

Overcast at 700 ft; the ceiling is 700 ft; visibility 6 mi.

Section of the sky over Liberty - Raven Rock, height above the station to scale: overcast cloud with its base at 700 feet, the ceiling at 700 feet, and visibility of 6 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT XIFFIG. A THE SKY OVER LIBERTY - RAVEN ROCKSECTION, 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 SHEETOVC 700 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 700 FTVISIBILITY, MILES: 6 MI0510TITLELiberty - Raven Rock, the skySTATION REPORT · ASOS XIFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-XIF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 57.2 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 700 ft.

Chart of the air at Liberty - Raven Rock: temperature 59.0 degrees Fahrenheit and dew point 57.2, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT XIFFIG. B THE AIR AT LIBERTY - RAVEN ROCKTHE 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 400 FT ABOVE THE STATION, AT 56.8 FLOWEST CLOUD REPORTED, OVC 700 FTTEMPERATURE AND DEW POINT 59.0 F, 57.2 FRELATIVE HUMIDITY 94 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 POINTTITLELiberty - Raven Rock, the airSTATION REPORT · ASOS XIFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-XIF-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (240 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Liberty - Raven Rock, north up: blowing from 240 degrees, the west southwest, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT XIFFIG. C THE WIND AT LIBERTY - RAVEN ROCKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELiberty - Raven Rock, the windSTATION REPORT · ASOS XIFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-XIF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Liberty - Raven Rock, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Cashtown 1S (ORTP1), 1.8 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Pennsylvania

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

Near Orrtanna

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

Near Orrtanna

River and lake gauges