Historical thawed depth (depth of surface frost thawed) data (2004-2024): click … Contact online >>
Historical thawed depth (depth of surface frost thawed) data (2004-2024): click
NCRFC Calculated Observed Mean Areal Precipitation (MAP) Mean Areal
US Dept of Commerce National Oceanic and Atmospheric Administration National
2024 NCRFC Spring Hydrologic Outlook . Please note: Information about current
Water Supply Products; Flow forecast for Mississippi Lock and Dam 22 - Cape
NCRFC incorporates 24 hours of QPF during Spring & Summer, and 48 hours
The data provided here is an experimental service of the National Weather Service
Open-Meteo uses data from thousands of weather stations around the world and combines global (11 km) and mesoscale (1 km) weather models from national weather services into one seamless prediction. These national weather services include the US National Oceanic and Atmospheric Administration (NOAA), Deutscher Wetter Dienst (DWD), Meteofrance and Canadian Meteorological Center (CMC). To provide the most precise and current weather data, Open-Meteo updates its weather predictions every hour.
The SMU temperature-at-depth maps start from the actual temperature measured in the Earth at as many sites as possible. In addition, the thermal conductance of the rocks (changing as the rock minerals change with deeper depths), the area heat flow, and the rock density (sedimentary rocks are less dense than basement rocks) are used to calculate the deeper temperatures. SMU Geothermal Lab calculates temperatures at specific depth intervals using these variables to produce the temperature maps at different depth slices for the United States.
Most of the measured temperatures used in the calculations are from sedimentary rocks which overlie the harder basement rock. The oil and gas industry has drilled into sedimentary rock as deep as 26,000 (ft) or 8 km in West Texas, yet more typical oil and gas drilling is 4,000 to 10,000 ft (1.2 to 3 km) depending on the depth to the resource. In areas with geothermal power production, drilling is usually in the 1 to 3 km depth range for western United States.
Temperature-at-depth maps are available for the following depths:
•near ground surface temperature mapDigitized from Gass, T.E., Geothermal heat pumps, Geothermal Resources Council Bulletin, 11, 3-8, 1982.
•3.5 kmtemperature-at-depth map
•4.5 km temperature-at-depth map
•5.5 km temperature-at-depth map
•6.5 km temperature-at-depth map
•7.5 km temperature-at-depth map
•8.5 km temperature-at-depth map
•10 km temperature-at-depth map
The citation for these maps is:Blackwell, D., Richards, M., Frone, Z., Ruzo, A., Dingwall, R., & Williams, M. (2011). Temperature-At-Depth Maps For the Conterminous US and Geothermal Resource Estimates. GRC Transactions, 35(GRC1029452).
For information on temperatures at even greater depths, visit EarthScope.
For global heat flow data, visit the International Heat Flow Commission.
Roy M. Huffington Department of Earth Sciences3225 Daniel Avenue, Suite 207Heroy HallDallas Texas 75205214-768-2750
Dedman College has an active alumni network with over 10,000 alumni in Dallas County and over 36,000 worldwide.
Link to Smithsonian Homepage
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