Grandfield (GRA2)

  • Station Number: 117
  • Location: 3.3 miles W of Grandfield
  • County: Tillman
  • Commissioned: 03/31/1999
  • Latitude: 34.239444° / 34° 14' 21" N
  • Longitude: -98.743583° / 98° 44' 36" W
  • Elevation: 341 meters above Mean Sea Level (1,119 feet )

Variables Measured Every 5 Minutes

  • Station Battery Voltage (BATV)
  • Barometric Pressure at 0.75 m (PRES)
  • Rain since midnight UTC at 0.6m (RAIN)
  • Relative Humidity at 1.5 m (RELH)
  • Solar Radiation (SRAD)
  • Air Temperature at 9 m (TA9M)
  • Air Temperature at 1.5 m (TAIR)
  • Supplemental Air Temperature (TSLO)
  • Wind Direction at 10 m (WDIR)
  • Wind Direction Standard Deviation at 10 m (WDSD)
  • Maximum Wind Speed at 10 m (WMAX)
  • Maximum Wind Speed at 2 m (WMX2)
  • Wind Speed at 2 m (WS2M)
  • Wind Speed at 10 m (WSPD)
  • Wind Speed Standard Deviation at 10 m (WSSD)
  • Vector Wind Speed at 10 m (WVEC)

Variables Measured Every 15 Minutes

  • Soil Temperature at 10 cm under Bare Soil (TB10)
  • Soil Temperature at 5 cm under Native Vegetation (TS05)
  • Soil Temperature at 10 cm under Native Vegetation (TS10)

Variables Measured Every 30 Minutes

  • 229L Soil Moisture Final Temperature at 5 cm (FT05)
  • 229L Soil Moisture Final Temperature at 25 cm (FT25)
  • 229L Soil Moisture Final Temperature at 60 cm (FT60)
  • 229L Soil Moisture Starting Temperature at 5 cm (ST05)
  • 229L Soil Moisture Starting Temperature at 25 cm (ST25)
  • 229L Soil Moisture Starting Temperature at 60 cm (ST60)
  • Thermocouple Reference Temperature (TREF)

Site Extremes Site Extremes since commissioning on 03/31/1999

Maximum air temperature (°F) 114 06/17/2011
Minimum air temperature (°F) 1 02/10/2011
Maximum daily rainfall (in.) 4.83 09/26/2017
Maximum monthly rainfall (in.) 16.43 05/2015
Maximum annual rainfall (in.) 50.31 2015
Maximum wind speed (mph) 88.8 05/04/2012



Soil Characteristics

  Texture Class % Sand % Silt % Clay
5 cm depth Silty clay loam 15.7 55.3 29
25 cm depth Silty clay 13.6 43.2 43.2
60 cm depth Silty clay 16.9 41.9 41.2
75 cm depth Silty clay 17.5 42.2 40.3