Storm Station

-F

-

What is measuring near here

The 6 instruments nearest Mount Gretna, 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 now4 instruments

LancasterLNS

At an airfield/12.7 mi away/404 ft/318 ft below here

temp, wind, gust, visibility, precip, pressure

Rank47of 544

Indiantown RunRUNP1

At a river or reservoir gauge/16.6 mi away/705 ft/17 ft below here

temp, wind, gust, humidity, pressure

Rank159of 544

Mahantango CkS2028

At a soil climate station/30.8 mi away/730 ft/8 ft above here

temp, humidity, soil temp, soil moisture

Rank-

measured daily2 instruments

LebanonLEBP1

At a cooperative observer's station/4.9 mi away/486 ft/236 ft below here

snowfall, snow depth, precip, high, low

Rank-

Lebanon 2.9 WSWPA-LB-16

In a volunteer observer's own ground/5.5 mi away/450 ft/272 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Lancaster, drawn

The nearest airport reporting now, 12.7 mi from Mount Gretna. From its report of Sep 27, 2026, 6:53 AM local time: 3 of its 6 sheets.

The sky

Overcast at 11,000 ft; the ceiling is 11,000 ft; visibility 10 mi or more.

Section of the sky over Lancaster, height above the station to scale: overcast cloud with its base at 11,000 feet, the ceiling at 11,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LNSFIG. A THE SKY OVER LANCASTERSECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,500ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 11,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 11,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELancaster, the skySTATION REPORT · ASOS LNSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-LNS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

58.0 F with a dew point of 52.0 F, 80 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 11,000 ft.

Chart of the air at Lancaster: temperature 58.0 degrees Fahrenheit and dew point 52.0, 80 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 11,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LNSFIG. B THE AIR AT LANCASTERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00040 F50 F60 F70 FSATURATES 1,400 FT ABOVE THE STATION, AT 50.6 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 11,000 FTTEMPERATURE 58.0 FDEW POINT 52.0 FSPREAD 6.0 FRELATIVE HUMIDITY 80 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 POINTTITLELancaster, the airSTATION REPORT · ASOS LNSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-LNS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 12 mph, gusting 21 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Lancaster, north up: blowing from 330 degrees, the north northwest, at 12 miles an hour, gusting 21; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LNSFIG. C THE WIND AT LANCASTERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 21 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELancaster, the windSTATION REPORT · ASOS LNSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-LNS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-in

Snow on the ground

Elsewhere in Pennsylvania

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

Near Mount Gretna

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