Welcome to Weather-Above
******* Weather data is based on amateur readings and should not be interpreted as being totally accurate. ********
This site is just for people with a general interest in weather
UK Weather Warnings
Cloud-Base
DAILY FIRE WEATHER INDEX
Important note Due to our earthquake monitoring the time zone was changed to UTC this was started on 24/03/2010
| Snow risk for Cheddleton, initialized at 4:07 PM Dec 16, 2024 | |
 |
No Snow Risk |
| 0% snow risk for the next few days. | |
Measurement
The WBGT is measured by a simple three-temperature element device:
The natural wet-bulb temperature (Tw), which consists of a thermometer with its bulb covered with a wettened cotton wick supplied with distilled water from a reservoir. The cotton wick will always be wet, allowing continuous evaporative cooling of the thermometer's bulb, simulating the evaporation of sweat. The natural wet-bulb thermometer, like the black globe thermometer is not shielded from wind or radiation. This thermometer represents the integrated effect of humidity, wind and radiation.The black globe temperature (Tg), which usually consists of a 150 mm (6 inch) black globe with a thermometer located at the center. The black globe temperature represents the integrated effects of radiation and wind.The (shade) air temperature (Ta), which consists of a thermometer shielded from radiation - generally by being placed in a weather screen. It is the standard temperature normally quoted in weather observations and forecasts.Calculations
The three elements Tw, Tg, and Ta are combined into a weighted average to produce the WBGT.
This page is updated from recent data collected by a Dallas 1-wire weather station
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WBGT
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(0.7 X Tw)
+
(0.2 X Tg)
+
(0.1 X Ta)
