Surface Systems

78.1 °F / 25.6 °C
SE at 3 MPH
87%
74.1°F / 23.4 °C
29.79" (1008 mb)
10 mile(s)
clear
2021.09.21 1640 UTC

Surface Systems

Kwajalein Island

For the latest surface observation, see here.

Automated surface observations are made by an FAA-certified Automated Weather Observing System (AWOS) on Kwajalein Island. Data collected include wind speed and direction, temperature, dewpoint, relative humidity, pressure, precipitation accumulation, cloud layers, horizontal visibility, and lightning. Sensors are split between the east (left) and west (right) ends of the Bucholz Army Airfield runway.

Manual surface observations can be performed at the RTS weather station in the event of AWOS failure. The conventional ground measurements performed at the weather station include wind speed and direction, temperature, dewpoint, relative humidity, pressure, precipitation accumulation, cloud layers and types, and horizontal visibility.

Surface pressure is measured using a Coastal Environmental Systems Precision Digital Barometer, PDB-1. This system is calibrated annually by the National Weather Service. A second portable digital barometer manufactured by Paroscientific, Inc., is kept on site as a spare and for use when the PDB-1 is undergoing calibration. It is also calibrated annually by the National Weather Service.

Tipping BucketRainfall is measured by two rain gauges located outside the weather station. The tipping bucket gauge (left) has an automatic readout in the weather station, and the NWS standard 8 inch gauge is read manually by weather station personnel.

Roi-Namur

For the latest surface observation, see here.

Automated surface observations are made by an Airport Weather Advisor (AWA) system on Roi-Namur. Data collected include wind speed and direction, temperature, dewpoint, relative humidity, pressure, precipitation accumulation, cloud layers, and horizontal visibility. Sensors are found at the southwest end of the Dyess Army Airfield runway.

Outer Islands

Automated surface observations are made by a network of Mini Automated Weather Stations (MAWS) around Kwajalein Atoll. For more information, see here.

Anemometers that provide direct readouts of wind conditions to the weather station are routinely set up on Meck Launch Hill, and can be deployed to other locations as needed.