May Ranch (MAYR)

  • Station Number: 61
  • Location: 16 miles NNE of Freedom
  • County: Woods
  • Commissioned: 01/01/1994
  • Latitude: 36.987070° / 36° 59' 13" N
  • Longitude: -99.011090° / 99° 0' 39" W
  • Elevation: 555 meters above Mean Sea Level (1,821 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 01/01/1994

Maximum air temperature (°F) 113 07/09/2011
Minimum air temperature (°F) -8 12/18/2016
Maximum daily rainfall (in.) 5.95 08/30/2003
Maximum monthly rainfall (in.) 9.76 08/1996
Maximum annual rainfall (in.) 36.60 1997
Maximum wind speed (mph) 94.3 07/25/2012



Soil Characteristics

  Texture Class % Sand % Silt % Clay
5 cm depth Loam 44.2 34.3 21.6
25 cm depth Loam 41.9 32.6 25.5
60 cm depth Silty clay 14.3 41.6 44.2
75 cm depth Silty clay 17 41.5 41.5