Sign In »
Register Now!
Help
---------------------------
APRIL 2012 Extremes:-
---------------------------
SCREEN TEMPERATURES:-
Minimum Air temp: 0.0c ---- Day 16
Maximum Air temp: 15.7c ---- Day 01
Lowest Maximum: 6.5c ---- Day 04
Highest Minimum: 8.2c ----- Day 26
Mean Maximum: 11.6c
Mean Minimum: 4.2c
Mean: 7.9c
Minimum Grass Temp: -1.8c ---- Day 16
---------------------------------------------------------
RAINFALL:-
Highest Rainfall in 24 hours: 20.4mm ---- Day 04
Total Rainfall for the Month: 136.4mm
Days with Rain >0.2mm: 2 Days.
Days with Rain >1.0mm: 18 Days.
----------------------------------------------------------
BAROMETRIC PRESSURE:-
Air Pressure Maximum: 1027.1 mb ---- Day 15
Air Pressure Minimum: 980.4 mb ---- Day 10
Mean (0900 UTC): 1005.1 mb.
----------------------------------------------------------
RELATIVE HUMIDITY:-
RH Max: 100%
RH Min: 43%
Mean RH (0900 UTC): 71.5%
----------------------------------------------------------
SOIL TEMPERATURE:- (30cm Depth)
Soil Max: 9.9c
Soil Min: 7.0c
Soil Mean: 8.4c
------------------------------------
WIND
N: 4
NE: 0
E: 7
SE: 0
S: 5
SW: 0
W: 8
NW: 3
CALM: 3
Mean Wind Speed: 24.2 mph
Maximum Wind Gust: 38.5 mph ---- Day 03
----------------------------------
Days with:-
Air Frost: 0
Ground Frost: 3
Fog/Mist: 0
Thunder/Lightning: 1
Snow Falling: 0
Snow Lying: 0
Sleet: 1
Hail: 4
Gale: 0
Ice Days: 0
Page 1 of 1
APRIL 2012 -- Monthly Reports & Statistics--
#1
- Group: Members
- Posts: 4916
- Joined: 28-May 09
- LocationHornsea, East Yorkshire. 10m AMSL
Posted 01 May 2012 - 12:41
#2
- Group: Members
- Posts: 43
- Joined: 23-April 12
- LocationWarwick UK
Posted 01 May 2012 - 16:35
Summary for period 01/04/2012 to 30/04/2012 - WARWICK
Temperature (°C):
Mean (1 minute) 7.6
Mean (min+max) 8.0
Mean Minimum 3.7
Mean Maximum 12.4
Minimum -2.6 on 06/04/2012
Maximum 17.7 on 30/04/2012
Highest Minimum 8.4 on 26/04/2012
Lowest Maximum 6.3 on 04/04/2012
Air frosts 3
Rainfall (mm):
Total for period 111.9
Wettest day 25.4 on 29/04/2012
High rain rate 40.8 day 19/04/2012
Rain days 23
Wind (mph):
Highest Gust 32.3 on 29/04/2012
Average Speed 3.0
Wind Run 1010.3 miles
Gale days 0
Pressure (hPa):
Maximum 1027.84 on 16/04/2012
Minimum 976.87 on 18/04/2012
Temperature (°C):
Mean (1 minute) 7.6
Mean (min+max) 8.0
Mean Minimum 3.7
Mean Maximum 12.4
Minimum -2.6 on 06/04/2012
Maximum 17.7 on 30/04/2012
Highest Minimum 8.4 on 26/04/2012
Lowest Maximum 6.3 on 04/04/2012
Air frosts 3
Rainfall (mm):
Total for period 111.9
Wettest day 25.4 on 29/04/2012
High rain rate 40.8 day 19/04/2012
Rain days 23
Wind (mph):
Highest Gust 32.3 on 29/04/2012
Average Speed 3.0
Wind Run 1010.3 miles
Gale days 0
Pressure (hPa):
Maximum 1027.84 on 16/04/2012
Minimum 976.87 on 18/04/2012
#3
- Group: Registered Climate Users
- Posts: 16854
- Joined: 31-May 06
- LocationTonbridge, Kent. 44m asl.
Posted 01 May 2012 - 16:47
Unlike the preceding two months, April was dominated by low pressure systems, often tracking well south and very slowly. It was the first time here that April was colder than the March it followed since 1991. It was especially unsettled from Easter Monday (9th) with frequent rain and showery downpours, some of these prolonged and with thunder. There were many rather cool days and nights with two air frosts, and only the 30th was a genuinely warm day. This was the third coldest April in these site records and the fourth wettest, the rainfall total being more than twice the April normal. There were also some strong winds, and sunshine hours were rather lower than normal at about 85%.
Full daily data at http://www.tonbridge...012/2012-04.htm
Full daily data at http://www.tonbridge...012/2012-04.htm
#4
- Group: Moderators
- Posts: 22785
- Joined: 02-August 04
- LocationBournemouth, England
Posted 01 May 2012 - 18:03
Well what a rotten month.
Mean 8.2C (March 9.0c)
Max 16.8C 30th
Low Max 8.9C 5th
Low Min -0.8C 6th
Max Min 11.6C 30th
RF 128.2mm (Although approx 4-8mm lost when rain gauge unblocked)
Wettest day 26.6mm 29th
Max wind gust 35mph 17th
Mean 8.2C (March 9.0c)
Max 16.8C 30th
Low Max 8.9C 5th
Low Min -0.8C 6th
Max Min 11.6C 30th
RF 128.2mm (Although approx 4-8mm lost when rain gauge unblocked)
Wettest day 26.6mm 29th
Max wind gust 35mph 17th
#5
- Group: Chasers
- Posts: 1001
- Joined: 25-October 02
- LocationWitham, Essex
Posted 04 May 2012 - 22:15
An absolutely amazing month here, never seen so much rain fall and had lots of convection and a few thunderstorms to boot! I love the fact that April 2011 we had only 3mm all month, 2010 just 9mm. April generally in later years has been a pretty dry month for us. Also even more amazingly appart from being my wettest April recorded (since 2004) I never actually broke any records in rainfall, although I have to check as I think its probably the wettest month I've ever recorded. However we are only 5 days into May and we are already and we are already at nearly half of last months total. Interesting times!
Averages\Extremes for the month of April 2012
Average temperature = 8.5°C
Average humidity = 78%
Average dewpoint = 4.6°C
Average barometer = 1004.3 mb
Average windspeed = 2.0 mph
Average gustspeed = 3.6 mph
Average direction = 210° (SSW)
Rainfall for month = 157.8 mm
Rainfall for year = 255.1 mm
Maximum rain per minute = 1.1 mm on day 25 at time 10:24
Maximum temperature = 16.9°C on day 02 at time 14:33
Minimum temperature = -0.2°C on day 06 at time 06:54
Maximum humidity = 94% on day 29 at time 14:26
Minimum humidity = 46% on day 01 at time 14:54
Maximum dewpoint = 10.8°C on day 27 at time 15:03
Minimum dewpoint = -3.7°C on day 06 at time 6:54
Maximum pressure = 1027.1 mb on day 16 at time 07:42
Minimum pressure = 978.1 mb on day 19 at time 00:22
Maximum windspeed = 15.0 mph from 113°(ESE) on day 29 at time 05:01
Maximum gust speed = 24.2 mph from 068°(ENE) on day 29 at time 11:22
Maximum heat index = 16.9°C on day 02 at time 14:33
Avg daily max temp :12.8°C
Avg daily min temp :5.1°C
Growing degrees days :42.1 GDD
Total windrun = 1409.6miles
Frost days= 1
-----------------------------------
Daily rain totals
-----------------------------------
02.0 mm on day 3
07.2 mm on day 4
05.1 mm on day 9
00.5 mm on day 10
08.8 mm on day 11
10.8 mm on day 12
01.5 mm on day 13
01.5 mm on day 15
04.1 mm on day 17
04.1 mm on day 18
05.1 mm on day 19
03.6 mm on day 20
01.0 mm on day 21
14.9 mm on day 23
05.6 mm on day 24
25.2 mm on day 25
03.1 mm on day 26
06.2 mm on day 27
22.2 mm on day 28
23.8 mm on day 29
01.0 mm on day 30
#6
Posted 05 May 2012 - 10:58
Station Statistics for April 2012 AWS Burncross, Sheffield, South Yorkshire UK
TEMPERATURE
11.4 Mean Max c
-0.6 Diff from Average
4.4 Mean Min c
0 Diff from Average
7.9 Mean c
-0.3 Diff from Average
16.5 High Max c 30th
5.0 Low Max c 4th
7.5 High Min c 9th
1.0 Low Min c 15th and 16th
-2.3 Grass Min c 16th
RAIN
172.8 Rain Total (mm)
291 % of Average
7 Wet days with >0.2 mm
18 Wet days with >1.0 mm
26.5 Most Rain in a day 18th
NUMBER OF DAYS WITH.
0 Air frost (air min temp -0.1C or less)
5 Ground Frost (grass min temp -0.1C or less)
3 Sleet/Snow Falling
1 50% snow cover at morning observation hour
0 Thunder Heard
5 Small hail (<5mm diameter)
1 Large Hail (>=5mm diameter)
0 Fog at morning observation hour
SUNSHINE
81.09 Total Sunshine (hours)
68% of Average
11.70 Most in a day (hours)
1st Day of Most Sun
6 Sunless Days
WIND
0 Days with gale (10 min mean wind 39 mph or more)
Wind Direction number of days with wind from.
11 N
1 NE
3 E
1 SE
0 S
5 SW
7 W
2 NW
0 Calm
WIND GUST
Mean Wind Speed 4.3 mph
Maximum Gust 27.5 mph
Day of Max Gust 3rd
THUNDER EVENTS
None
OTHER MEASUREMENTS
75 Cloud Cover %
66 Mean Relative Humidity % (Taken at Morning Observation)
999 Mean Pressure (mb) at 9:00 am GMT only
1020 Max pressure at any time of day 16th
978 Min pressure at any time of day 18th
STATION NOTES.
April was a very wet cold month but it was not a record breaker there were colder and wetter Aprils than this year.
The first precipitation which was recorded was the snow of the morning of the 4th which had melted away by noon this gave 7.6mm. We were in for a month of Power Showers with hail mixed in you had only to travel half a mile and you would miss the rain. We had a very wet day on the 18th with 26.5 mm falling then on the 25th 25.6 mm and on the 26th 25.2 mm finally on the 29th 20.0 mm a total of 172.8 mm was recorded and this is still short of April 2000 when 179.4 mm was recorded contrast this with last April when 20.1 mm was recorded.
The month commenced with warm and sunny condition with 11.70 hours of sunshine recorded on the 1st by the 4th it was cold with a maximum of only 5.0c recorded. Temperatures never recovered until the maximum of 16.5 c on the 30th Lower double digit maximums were the norm throughout the month. The coldest nights were the 15th and 16th when the minimum was 1.0c and the warmest night was on the 9th with a maximum of 7.6c.
Pressure was a feature on the 17th when the low moved in 991 mb was recorded on the 18th during the period the persistent low was present 978 mb was recorded and it was during that period until the 28th when pressure rose to 1016 mm that there was any improvement in conditions
TEMPERATURE
11.4 Mean Max c
-0.6 Diff from Average
4.4 Mean Min c
0 Diff from Average
7.9 Mean c
-0.3 Diff from Average
16.5 High Max c 30th
5.0 Low Max c 4th
7.5 High Min c 9th
1.0 Low Min c 15th and 16th
-2.3 Grass Min c 16th
RAIN
172.8 Rain Total (mm)
291 % of Average
7 Wet days with >0.2 mm
18 Wet days with >1.0 mm
26.5 Most Rain in a day 18th
NUMBER OF DAYS WITH.
0 Air frost (air min temp -0.1C or less)
5 Ground Frost (grass min temp -0.1C or less)
3 Sleet/Snow Falling
1 50% snow cover at morning observation hour
0 Thunder Heard
5 Small hail (<5mm diameter)
1 Large Hail (>=5mm diameter)
0 Fog at morning observation hour
SUNSHINE
81.09 Total Sunshine (hours)
68% of Average
11.70 Most in a day (hours)
1st Day of Most Sun
6 Sunless Days
WIND
0 Days with gale (10 min mean wind 39 mph or more)
Wind Direction number of days with wind from.
11 N
1 NE
3 E
1 SE
0 S
5 SW
7 W
2 NW
0 Calm
WIND GUST
Mean Wind Speed 4.3 mph
Maximum Gust 27.5 mph
Day of Max Gust 3rd
THUNDER EVENTS
None
OTHER MEASUREMENTS
75 Cloud Cover %
66 Mean Relative Humidity % (Taken at Morning Observation)
999 Mean Pressure (mb) at 9:00 am GMT only
1020 Max pressure at any time of day 16th
978 Min pressure at any time of day 18th
STATION NOTES.
April was a very wet cold month but it was not a record breaker there were colder and wetter Aprils than this year.
The first precipitation which was recorded was the snow of the morning of the 4th which had melted away by noon this gave 7.6mm. We were in for a month of Power Showers with hail mixed in you had only to travel half a mile and you would miss the rain. We had a very wet day on the 18th with 26.5 mm falling then on the 25th 25.6 mm and on the 26th 25.2 mm finally on the 29th 20.0 mm a total of 172.8 mm was recorded and this is still short of April 2000 when 179.4 mm was recorded contrast this with last April when 20.1 mm was recorded.
The month commenced with warm and sunny condition with 11.70 hours of sunshine recorded on the 1st by the 4th it was cold with a maximum of only 5.0c recorded. Temperatures never recovered until the maximum of 16.5 c on the 30th Lower double digit maximums were the norm throughout the month. The coldest nights were the 15th and 16th when the minimum was 1.0c and the warmest night was on the 9th with a maximum of 7.6c.
Pressure was a feature on the 17th when the low moved in 991 mb was recorded on the 18th during the period the persistent low was present 978 mb was recorded and it was during that period until the 28th when pressure rose to 1016 mm that there was any improvement in conditions
#7
Posted 06 May 2012 - 14:58
Here are the stats form my site amid the rolling Midlothian countryside. 
SUMMERY
It was a cold wet month.It was 2.75C colder than March and there was only 5 days without recordable rainfall.The wettest day was on the 10th with 16.8mm and the second wettest was the 2nd with 6.6mm.Its somewhat of a suprise that the rainfall for the month was 66.9mm as it seemed wetter than that to me ,although it was over four times as much rain as in March.
TEMPERATURES
Highest..................14.3C on the 1st
Lowest...................-3.1C on the 5th
Lowest Max................3.8C on the 4th
Highest Min...............4.5C on the 8th
Mean Max..................9.05C
Mean Min..................0.70C
MEAN......................4.87C
WEATHER
Days with...
Rain(1.0mm+)................19
Snow.........................3
Sleet........................1
Hail.........................3
Thunder......................0
Fog..........................2
Lying Snow(50%+).............1
Air Frost...................10
Rainfall.....................66.9mm
PRESSURE
Highest......................1026mbs on the 28th
Lowest........................975mbs on the 10th
MEAN.........................1000.5mbs
SUMMERY
It was a cold wet month.It was 2.75C colder than March and there was only 5 days without recordable rainfall.The wettest day was on the 10th with 16.8mm and the second wettest was the 2nd with 6.6mm.Its somewhat of a suprise that the rainfall for the month was 66.9mm as it seemed wetter than that to me ,although it was over four times as much rain as in March.
TEMPERATURES
Highest..................14.3C on the 1st
Lowest...................-3.1C on the 5th
Lowest Max................3.8C on the 4th
Highest Min...............4.5C on the 8th
Mean Max..................9.05C
Mean Min..................0.70C
MEAN......................4.87C
WEATHER
Days with...
Rain(1.0mm+)................19
Snow.........................3
Sleet........................1
Hail.........................3
Thunder......................0
Fog..........................2
Lying Snow(50%+).............1
Air Frost...................10
Rainfall.....................66.9mm
PRESSURE
Highest......................1026mbs on the 28th
Lowest........................975mbs on the 10th
MEAN.........................1000.5mbs
This post has been edited by Les: 06 May 2012 - 14:58
Share this topic:
Page 1 of 1