Weather at Tonbridge, Kent, Latitude 51° 11' N, Longitude 0° 16' E, Altitude 44m.  Sunrise: 06:20  Sunset: 17:58
 CONDITIONS (AS AT 22:20 UTC, 12/03/10 ): Dry. Cloudy
 TEMPERATURE/HUMIDITY  CURRENT  TREND  LOW 12/03/10  HIGH 12/03/10
 Temperature  5.3°C  0.0°C/last hr  0.8°C at 02:29  8.1°C at 13:52
 Dewpoint  2.5°C  -0.3 ºC/last hr  -4.0 °C at 00:40  4.3 °C at 15:46
 Relative Humidity (RH)  82%  -2% last hr  63% at 00:01  85% at 19:21
 Humidex (Apparent Temp.)  3.8°C  N/A  N/A  6.9 ºC
 Feels Like (Heat Index)  5.3°C  N/A  0.8 °C at 02:30  8.1 °C at 13:52
 Feels Like (Wind-chill)  5.3°C  N/A  0.7 °C at 08:24  N/A
 Wet Bulb Temp  4.1°C  ( Wet Bulb Depression = 1.1 ºC : Dewpoint depression = 2.8 °C )
 WIND SPEED / DIRECTION  CURRENT  RECENT    HIGH 12/03/10
 Wind Speed average  0.8 mph = 1.3 km/h  = Calm  7.2 mph = 3.2 m/s at 14:24
 Gust Wind Speed Snapshot  2.3 mph = 1.0 m/s  High Last Hour: 7.0 mph = 3.1 m/s  13.0 mph = 5.8 m/s at 14:27
 Dominant Wind Direction  N  Last 10 Mins: N  Dominant direction since 00h: North northwesterly
 BAROMETER  CURRENT  TREND (last 3 hours)  LOW 12/03/10  HIGH 12/03/10
 Barometer (Mean Sea Level)  1024.7 hpa  Rising  (+2.2 hPa )  1019.0 hPa at 14:01  1024.7 hPa at 22:11
 History  Pressure change in hPa last 1 / 6 / 12 / 24 hours = +0.7  / +4.8  / +5.5  / +3.1
 Vapour Pressure  7.29 hPa
 RAIN  CURRENT  RECENT   HIGH 12/03/10
 Today's Rainfall (total since midnight)   1.8 mm  0.0 mm rain in last hour
 Rain Rate  0.0 mm/hr  Has been raining for 0 minutes  6.1 mm/hr at 17:34
 SUNSHINE DATA  CURRENT    HIGH 12/03/10
 ( N.B. Solar radiation sensor has severely limited exposure to direct sun from November to February. )
 Apparent Temperature in the sun  4.0 °C
 Solar Radiation  0 of possible 0 w/m² ( 0 %)  598 w/m² at 13:43 
 Sunshine Hours hh:mm   0 mins in last/hr  : Total today: 00:06  (auto + manual input)
 Maximum Possible Sunshine hh:mm  11:38:00  
 Ultraviolet Radiation Index  0.0 / Burn time (skin type burns easily) --- mins   2.4 at 13:42
 MORE RAIN DATA
 Last Rainfall recorded  0 day(s) ago, on 12/3/2010
 Rain in 24 hours to 22:20  1.8 mm
 Rain Total Last 7 Days  0.0 mm
 Rainy Days This Month  1
 Rain Total This Month  1.8 mm
 Rain Total This Year  128.1 mm
 LAST 7 DAYS IN BRIEF
 Low Temperature  -3.2 ºC on Sun
 High Temperature  8.4 ºC on Fri
 Low Humidity  42.0 % on Sun
 Max gust wind speed  18.4 mph on Mon
 Low Barometer  1019.0 on Fri
 High Barometer  1032.7 on Sun
 EXTREME READINGS TO 22:20, 12/03/10 FOR:
March
2010
 High Temperature
12.1
  ºC on day 2
12.1
 ºC on 2 / 3
 Low Temperature
-3.5
  ºC on day 7
-5.7
 ºC on 7 / 1
 High Dew Point
4.3
 ºC on day 12
8.0
  ºC on 24 / 2
 Low Dew Point
-7.1
 ºC on day 7
-7.8
  ºC on 7 / 1
 Low Relative Humidity
39
  % on day 2
39
  % on 2 / 3
 Low Wind Chill
-3.2
  ºC on day 7
-7.0
  ºC on 9 / 1
 High Heat Index
12.1
  ºC on day 2
12.1
  ºC on 2 / 3
 High Wind Gust Speed
18.1
  mph on day 3
25.0
   mph on 26 / 2
 High Average Wind Speed
9.4
  mph on day 10
18.3
   mph on 28 / 2
 High Barometer (Mean Sea Level)
1032.7
  hPa on day 7
1040.5
  hPa on 26 / 1
 Low Barometer (Mean Sea Level)
1002.5
  hPa on day 1
975.7
  hPa on 28 / 2
 Highest Daily Rainfall Total
1.8
  mm on day 12
19.3
  mm on 28 / 2
 High Rain Rate
0.1
  mm/min on day 12
0.5
  mm/min on 21 / 2
 High Solar Radiation
757.0
  w/m² on day 6
757.0
  w/m² on 6 / 3
 OTHER STATS    
 Number of days with air frosts
4
32
 Mean Average Temperature
3.4 ºC
 2.8ºC
 Calculated Sunshine Hours (hh:mm)
56:06
165:06
MORE LIVE DATA READINGS PAGE 2
Note: Following the 8th Congress of the World Meteorological Organization, from 1 January 1986 the term hectopascal (hPa) is preferred to the numerically identical millibar (mbar) for meteorological purposes. 1 hPa = 1mb
HISTORICAL DATA GRAPHS (Data plotted every 30 mins)
( Data for last 48 hours logged every 10 mins shown in simple text file format. )
  Press "Back" in your browser to return to this page


This data is recorded using a wireless Davis Vantage Pro 1 with the datalogger and Weatherlink software. Presentation to web also uses Dreamweaver 8 and customisation features of Weather Display and Weather Display Live and the VirtualVP utility. The ISS ( rain gauge / temperature and humidity sensor ) is attached to the top of a fence, facing ESE. It is sited at 1.2m above loose soil, 4m away from the house. The anemometer is located separately, 4.5m above ground level and with the house obstructing much airflow from NE to E.

Automatic Weather Station History
28 July 2004: Wireless Davis Vantage Pro installed with passive radiation shield.
29 Oct 2004: Anemometer exposure slightly improved.
06 Jan 2005: Installed Daytime Fan Aspirated Radiation Shield (DFARS).
25 Feb 2005: Installed solar radiation sensor.
02 Sep 2005: Weatherlink software upgraded to v5.60
29 May 2006: Weatherlink software upgraded to v5.70
01 Jun 2006: Started using new software VirtualVP and Weather Display with Weather Display Live
01 Jan 2007: Installed independent lux (brightness) sensor to improve sunshine readings (not linked to above readings).
03 April 2008 Added UV Radiation sensor