Malvern Wells Weather  (malvernwx.co.uk)

Worcestershire, UK. 

N 52 4' 6"  W 2 19' 26"  Altitude: 90 m

Based on the east side of the Malvern hills.

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  UK - WEATHER STATION TOPSITES - UK

Malvern Wells Weather - About Us

 

 

  About Us:
I have put together this page to give a bit more detail of the Malvern Wells Weather Station. I hope you find it interesting and informative. I would encourage you to contact me with queries or even corrections. I don't consider myself to be a weather expert, although I probably know more than most, I am more interested in the gathering and analysis of the data.
 
     
  Location:
The station is based at my home which is on the border between Malvern Wells and Upper Welland. We are at an altitude of about 90 metres above Mean Sea Level (MSL) and are partway up the east side of the Malvern Hills (which appear to the left in this image), an area of outstanding natural beauty. The Malvern Hills are on the boundary between the counties of Worcestershire and and Herefordshire and are in the form of a long ridge that runs north-south on the edge of the Severn Valley. Further to the west is the county of Herefordshire and the Welsh Borders.

Below is a 3-D representation of the Malvern Hills viewed from the north. This weather station is in the vicinity of the red arrow. Great Malvern is bottom left and Malvern Wells stretches along the left side of the hills for several miles. West Malvern runs along the right side of the image.
 

 
 


A 3-D representation of the Malvern Hills looking South from just north of North Hill.

 
   

 

 
  Weather Station:
Malvern Wells weather has been in existence since September 2006. So I have archive material from then. I have always been interested in solar radiation so I purchased a Davis Instruments Wireless Vantage Pro2 Plus station that includes measurements of air temperature, relative humidity, air pressure, rain, wind speed and direction, UV and solar radiation. From these parameters other data is derived, for example; dew point temperature and wind chill. I purchased the station from Weather Shop who are based in Eastbourne. They provide an excellent service (see links page).

There are particular standards for placement of a weather station. The ideal site is in the middle of a grass field. Many amateur weather station enthusiasts are unable to locate their stations to meet these standards so there are usually compromises made. I opted to site my station on the roof of my house. This gives the clearest readings for wind, rain, solar and UV, but not for air temperature and humidity. I have a separate wireless temperature and humidity sensor that is located at the correct height above ground level. It is interesting to see the difference in readings between these two heights (see below).
 

 
     
 

Vantage Pro2 Plus station and console
(solar and UV sensors are not shown)
 
Solar Sensor
 
 
Temperature/Humidity Station
 
     
 
 

Air Temperature:
The Malvern Wells station has two sensors for air temperature. One is located at roof level and the second is located at the correct height of 4 feet above ground level. Both the sensors are located inside a Stevenson's screen that protects the sensor from direct solar heating and allows the air to pass through.
The graph to the right shows the difference between the two readings. Often these are very close, although differences will normally be more apparent on days when the air is still and settles into layers. Foggy or very hot days would typically give a difference.

 

 
     
 
Relative Humidity:
As with the air temperature sensors above, the station has two sensors for relative humidity. These are co-located with the temperature sensors inside the Stevenson's screen.
The graph to the right shows the difference between the two readings. Regular visitors will see that the difference can be quite large.

 

 
     
 

Rain:
Rain is measured using a tipping bucket arrangement with a funnel to collect the rain. The graduations are in steps of 0.2 mm, therefore smaller amounts of rain will not be indicated until enough rain has entered the bucket for it to tip and the magnet sends an impulse through the reed switch to the weather station. The funnel above the tipping bucket is not heated, so snow (or it's rainfall equivalent) will not be recorded in the same way until it melts and the total may be slightly lower due to evaporation. The diagram on the right shows the arrangement.
In general the weather station records annual rainfall and the software calculates daily, hourly, rain rates etc. from that. For reference the daily rainfall graph is always reset to zero at midnight.

 

 
     
 

Wind Speed and Direction:
The weather station has a combined anemometer/wind vane. The principle of wind vanes and anemometers is well known so will not be explained further.
The software is continually monitoring the speed and direction of the wind. The gust value is the maximum wind speed over a period and the wind speed value is the average over that period.
In this station's location there are a few trees someway to the north, but the whole arc from North-West through the South to North-East is clear and represents a small percentage of the population.

 
     
  Photographs:
The photographs below are those I use in the header. I rotate these around and usually use about five at any one time. Where the photographs have come from other sources I have attributed the source. Some are hyperlinked with a higher resolution version. If you have a suitable photograph to offer then I may well be able to use it.
 
 
 

 
 

Super Large Panorama taken from Poolbrook Common by Brian Sweet

 
     
 

Four Peak by Rob Embleton (view North from above British Camp reservoir)

Hang gliders off Pinnacle Hill
by Jenny Ward

Looking North towards Pinnacle Hill
by Linton Seabrook

Herefordshire Beacon
by Jenny Ward

Upper Welland and Little Malvern
by Jenny Ward

Dawn from The Wyche Cutting
by Jon Garfitt

View North from Gullet Quarry area

View of Pinnacle Hill

St. Anne's Well

View of Worcestershire Beacon from the area of Pinnacle Hill

View North of Pinnacle Hill with Worcestershire Beacon in the background

View South of Pinnacle Hill and Herefordshire Beacon in the background

View North from the Herefordshire Beacon

Black Hill with Pinnacle Hill in the background

Looking South from Worcestershire Beacon

From Chase End looking North

Worcestershire Beacon with North Hill

Somers Obelisk
     
     
 
     
     
     
Contact me at webmaster@malvernwx.co.uk