Tonbridge-Weather.org.uk

JANUARY 2014 daily and monthly summary

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JANUARY 2014
February

January 2014 monthyl summary stats to 16th
* Compared to site averages 1985 - 2012.
‡ SUN:
These sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is extremely limted this month. The sensor receives less than 25% of total possible sunshine exposure this month due to building obstruction and low sun altitude. There is no allowance above for sunshine by visual observation only, so the sunniest day figures above can be very significantly less than the actual daily sunshine duration.
THW = Shaded Heat Index calculated with cooling/warming effect of wind and humidity to give an apparent temperature.
THSW = Unshaded Heat Index calculated with cooling/warming effect of wind, humidity and full direct sunshine to give an apparent temperature.
EVAPO-TRANSPIRATION is drying effect due to sun and wind, and is equivalent to "negative rainfall"

   DAILY STATS JANUARY 2014
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
 WEATHER
 NOTES
DATE
Low
(21-09h)
High
(09-21h)
Temp at 14.00z
RH %
at 14.00z
Dewpoint ºc
at 14.00z
Bright
sun hrs
hPa   †
at 14.00z
Day Total
(mm)
Average
(mph)
Max Gust
(mph)
Dominant
(Compass)
 Precipitation
 type etc ‡
                       
1st
5.4 11.1 9.4 91 8.0 0.0 989.8 FQ 19.6 6.2 31 SW  Rain & gales
2nd
6.6 10.4 10.1 71 5.0 0.7 997.4 RS 3.3 4.0 24 SW  Rain shwrs night am
3rd
7.9 10.9 7.9 83 5.2 0.3 995.1 RS 10.4 7.1 31 SW  Rain showers
4th
5.6 9.6 8.9 88 7.0 0.0 988.0 F 11.9 3.3 28 SW  Rain
5th
-0.1 9.9 7.3 89 5.6 0.2 1003.0 FS 6.3 2.4 32 SW  Rain
6th
9.8 12.5 11.9 75 7.6 0.7 995.3 ST 4.6 8.0 32 SW  Rain showers
7th
9.7 11.6 10.8 80 7.5 0.2 1004.5 RS 7.6 7.0 27 SW  Rain
8th
7.6 11.4 10.3 81 7.2 0.5 1014.2 FS 1.8 3.8 24 SW  Rain night pm
9th
9.1 11.8 8.8 65 2.6 0.3 1007.1 RQ 0.0 4.9 29 SW  Cloudy
10th
-0.1 9.7 9.2 82 6.3 0.2 1013.7 FS 0.5 1.6 13 SW  Rain shower eve.
11th
6.4 8.7 8.7 62 1.8 1.5 1019.4 RS 1.3 1.7 12 SW  Rain showers am
12th
-2.8 9.7 5.9 89 4.2 0.2 1014.0 FQ 3.8 1.4 20 SE  Rain night pm
13th
6.2 8.7 8.3 84 5.8 0.2 1004.2 F 2.3 3.3 22 SW  Rain
14th
2.1 6.6 6.6 74 2.2 1.3 1005.5 RS 3.6 1.2 10 SW  Rain night
15th
4.3 10.3 10.1 93 9.0 0.0 997.7 F 4.8 3.4 17 SW  Rain
16th
7.8 10.6 9.3 82 6.4 0.2 989.7 F 4.6 3.9 28 SW  Rain showers
17th
6.7 8.8 8.5 87 6.5 1.0 990.9 ST 10.2 3.0 28 SW  Rain
18th
7.8 9.6 9.2 79 5.7 0.3 989.8 F 0.3 1.8 16 SE  Rain shower night am
19th
6.9 8.7 8.4 67 2.6 1.7 995.9 RS 0.8 0.9 10 SE  Rain shower am
20th
-0.6 7.0 6.6 88 4.7 0.1 1008.1 RS 0.0 0.0 2 NE  Cloudy/Fair
21st
0.9 5.8 4.6 95 3.8 0.3 1009.4 F 0.0 0.7 14 SE  Fog
22nd
4.7 9.8 8.8 83 6.1 1.3 1006.1 RS 2.0 1.2 17 SE  Rain am night
23rd
1.2 7.8 7.3 79 3.9 0.8 1009.9 RS 2.0 1.8 19 SW  Rain am
24th
2.0 8.3 8.2 76 4.2 0.2 1012.5 FS 3.8 0.8 11 SE  Rain night pm
25th
6.8 11.2 11.1 77 7.2 0.5 1010.3 F 2.8 2.6 38 SW  Rain am, squall pm
26th
4.2 9.9 8.4 91 7.0 0.0 992.2 FQ 5.6 3.3 24 SW  Rain
27th
2.9 8.3 7.9 67 2.1 0.2 988.2 FS 0.3 3.8 17 SW  Rain shower pm
28th
4.9 8.0         984.0 ST 8.5     S  Rain showers pm
29th
3.7 5.2         993.0 RS 13.5     ENE  Rain
30th
3.3 6.0         1001.2 ST 5.1     NNE  Rain
31st
-0.3 8.3 6.0 87 4.0   999.5 F 15.4 1.9 20 SW  Rain pm
                         
‡ SUN: Sunshine hours are calculated approximately and solely from solar radiation readings, but note that the solar sensor's exposure to sunshine is rather limited. The sensor receives less than 60% of total possible sunshine exposure this month, and there is no allowance for sunshine by visual observation only, so the figures above can be very significantly less than the actual daily sunshine duration.
† Barometer trend (previous 3 hours) : F = falling, ST = steady, R = rising; Q = quickly, S = slowly
Weather Notes use METAR codes: OVC = overcast; SHRA = rain showers; '+' = heavy; CAVOK = no cloud below 5000 ft & visibility> 10 km & no fog, precipitation or snow; SN = snow; RASN = Rain and snow

1st
LP 973 hPa SW Ireland. Spell of rain just after midnight with some small hail. Overcast, windy and gloomy day with rain starting soon after 10.00 lasting into the evening and heavy at times.
2nd
Rain showers in the pre-dawn hours. A bright day with some long sunny spells especially in the morning, a little more cloud in the afternoon with showers later. A band of heavier rain arrives just before midnight.
3rd
Rain continues overnight to 02.30 with passage of occluded front. A trough brings a short spell of heavy rain around sunrise. A long sunny spell in the morning with some heavy rain showers in the afternoon and evening.
4th
Rain resumes around 04.00 and lasts the whole of daytime, sometimes light but mostly moderate. Finally stops in early evening.
5th
Ground frost and fairly bright in the morning with some hazy sunshine. Cloudy in the afternoon.
6th
LP 954 hPa NW of Ireland and filling. Light rain with strong wings in the night. A couple of heavy showers in the morning and sunny intervals.
7th
More heavy showers in the night and mid-morning. Some brightness in the middle of the day. Another band of heavy rain late in the night.
8th
A little rain continuing from the previous day. A cloudy but sometimes bright day with some sunny intervals. Further spell of rain in the night.
9th
Mainly cloudy but with some sunny intervals. Sky clearing late in the afternoon.
10th
Bright and sunny morning with ground frost. Rather cloudy from early afternoon with a rain shower in the evening.
11th
HP 1023 hPa N Italy. Some early morning rain showers before sky clears just before 09.00. A sunny day with few clouds.
12th
Clear morning with hard ground frost. A couple of long sunny spells before cloud arrives in late morning. An overcast and dull afternoon. A spell of rain in late evening and the night.
13th
LP 991 hPa NW Ireland. A mainly cloudy day with a little brightness and some rain showers, heavier in the evening.
14th
A spell of rain just after midnight. A fine day with some long sunny periods.
15th
LP 970 hPa S of Iceland and W of Ireland. A gloomy day with intermittent rain and drizzle.
16th
LP 977 hPa Ireland. Mainly cloudy day with rain showers (one with small hail) and just a little brightness in between.
17th
LP 980 hPa Isle of Man. A long spell of rain in mid-morning, sometimes heavy, from slow moving occluded front. Lightning seen just to the west. Some short sunny spells during the day with some light rain showers in early afternoon and evening.
18th
A rain shower just after midnight, A cloudy but sometimes bright day with a few short sunny intervals.
19th
A rain shower in the early morning, Some long sunny spells morning and afternoon interrupted by a couple of cloudier spells mid-morning and lunchtime.
20th
A fairly bright day but persistent high cloud means that there is only a brief glimpse of bright sunshine late in the afternoon.
21st
A foggy morning with visibility down to 150m, fog/mist doesn't clear until early afternoon to allow just some brief sunshine.
22nd
Light rain and drizzle in the early hours, becoming dry by sunrise. Cloudy in the morning but brightening up to give sunny spells in the afternoon.
23rd
Early fog and mist, spell of rain midmorning from occluded front, followed by a shower with a little hail in the middle of the day. Clearing to give some short sunny spells later.
24th
LP 952 hPa WSW of Iceland, HP 1040 hPa Azores. A cloudy but bright morning with some brief weak sunshine, becoming overcast in the afternoon. Rain starts in the late evening.
25th
LP 955 hPa Iceland, HP 1037 hPa Baltic states. Rain continues overnight until around 02.30. Overcast sky clears to give a sunny spell in the middle of the day. Very squally gust front passage around 17.00 with lightning, hail and heavy rain in addition to strong wind.
26th
LP 950 hPa S of Iceland and W of Scotland. Dull morning with rain starting just after 10.00 and end in late afternoon.
27th
LP 954 hPa W of Outer Hebrides. Mainly bright morning with some hazy sunshine. A rain shower in late afternoon.
28th
NB MAIN EXTERNAL WEATHER SENSORS STOPPED WORKING AT 07.00, some readings possible from backup instruments . A bright morning with some sunshine. Rain showers from mid-afternoon. Further rain with a flash of lightning and thunder in the evening.
29th
Light rain and drizzle persist for virtually the whole day with an occlusion pushing slowly across from the SE.
30th
LP 998 hPa Normandy. Rain from occlusion continues to push in, now from the south. Rain finally ends around 15.00
31st
Deepening LP 940 hPa S of Iceland at 56°N, 20°W. A couple of showers in the night. Briefly bright in the morning but cloud soon spreads across from the west with rain starting in mid-afternoon and continuing overnight.