[HSEA2]

Burwell, E.cambs, 11m ASL. February 2012

February 2012 started exceptionally cold, with a mean maximum of 0.8c and a mean minimum of -5.8c (mean -2.5c) over the first 12 days, amongst the coldest recorded periods in February locally. However it was a month of two halves, with the last fortnight averaging a mean maximum of 11.3c and a mean minimum of 4.0c (mean 7.7c) - amongst the warmest periods in February. This gave an overall monthly mean close to average, hiding the unusual cold of early february and unusual warmth of late February. The minimum temperature of -16.3c on the 11th was the coldest on my record (since 2000) and not far off Cambridge Botanical Gardens absolute minimum (stretching back to 1904) of -17.2c. The daytime maximum of -4.9c was also the coldest on my record which was all the more impressive as except for a short period just after dawn, there was no freezing fog, only unbroken sunshine. It is insteresting to speculate of how cold the next night could have been if cloud hadnt moved in so quickly, as temperatures by 10pm were some 7c lower by 9pm on the 11th than the 10th, suggesting values of below -20c may have been possible.

It was also a very sunny month, with nearby readings of over 100 hours, or about 50% above the Cambridge long term average - 9 days were clear or mostly clear.


24 hour means (-/+ 30year average at Cambridge NIAB)
Mean temp: 3.0c / 37.4f (-1.3c)
Mean Max: 6.7c / 44.1f (-0.7c)
Mean Min: -0.7c / 30.7f (-1.8c)

12 hourly means
Mean temp: 3.3c / 37.9f
Mean Max: 6.7c / 44.1f
Mean Min: -0.2c / 31.6f

High Max: 17.0c / 62.6f (23rd)
Low Max: -4.9c / 23.2f (11th)
High Min: 9.2c / 48.6f (28th)
Low Min: -16.3c / 2.7f (11th)

Air frosts: 15
Ice days: 1
Snow falling: 5 days
Snow Lying: 9 days with full cover, 10 days if days <50% cover are included
Deepest snow: 10cm (5th)
Total Snowfall: 14cm (10cm 4th/5th, 4cm 10th)

[HSEA2]

Meteogroup report:

http://www.weatherca...d439ded82c.html



Highest monthly MEAN MAX: 9.8c Murlough
Lowest monthly MEAN MAX: 5.0c Leek/thorncliffe


Highest monthly MEAN MIN: 6.8c St Mary/Scilly
Lowest monthly MEAN MIN: -1.2c Chesham

[Dave K]

FEBRUARY 2012 at TONBRIDGE - COLD START, MILD END, DRY, RATHER SUNNY

It was a cold and frosty first 12 days of the month before a brief transition to much milder weather. On the 23rd there was a new site record of 17.4 °C for high temperature in February. Despite a mild last fortnight the cold start resulted in a monthly mean temperature 0.6 °C below average. The total precipitation for the month was 11.4 mm or only 22% of the February normal - more than half of that falling as snow overnight on the 4th and 5th. The snow, reaching a depth of 8cm, melted fairly quickly from roads and pavements but left snow cover for 5 days on grassy patches. Sunshine total was rather above average for February with an estimated 82 hours although the nearest UKMO station at East Malling officially recorded over 100 hours.

The month also set a new site record for highest monthly mean barometer with 1028.1 hPa since AWS logging started in Aug 2004.

Full daily stats at http://www.tonbridge...012/2012-02.htm

[Richie]

---------------------------
FEBRUARY 2012 Extremes:-
---------------------------
TEMPERATURES:-
Minimum Air temp: -7.8c ---- Day 11
Maximum Air temp: 15.6c ---- Day 23
Lowest Maximum: 0.2c ---- Day 11
Highest Minimum: 10.4c ----- Day 23
Mean Maximum: 7.3c
Mean Minimum: 1.4c
Mean: 4.4c

Minimum Grass Temp: -9.6c ---- Day 11

Dewpoint Minimum: -9.7c ---- Day 11
Dewpoint Maximum: 12.5c ---- Day 23
-----------------------------------------------------
RAINFALL:-
Highest Rainfall in 24 hours: 8.3mm ---- Day 04 **Meltwater**
Total Rainfall for the Month: 17.7mm
Days with Rain >0.2mm: 7 Days.
Days with Rain >1.0mm: 3 Days.

-------------------------
BAROMETRIC PRESSURE:-
Air Pressure Maximum: 1046.6 mb ---- Day 07 **Site record**
Air Pressure Minimum: 1002.0 mb ---- Day 18
Mean (0900 UTC): 1023.1 mb.

----------------------------------------------------------
RELATIVE HUMIDITY:-
RH Max: 100%
RH Min: 49%
Mean RH (0900 UTC): 75%
----------------------------------------------------------
SOIL TEMPERATURE:- (30cm Depth)
Soil Max: 8.9c
Soil Min: 2.0c
Soil Mean: 5.4c
------------------------------------
WIND

N: 1
NE: 0
E: 2
SE: 6
S: 0
SW: 7
W: 5
NW: 8
CALM: 0

Mean Wind Speed: 20.5 mph

Maximum Wind Gust: 36.0 mph ---- Day 22
----------------------------------
Days with:-

Air Frost: 13
Ground Frost: 13
Fog/Mist: 3
Thunder/Lightning: 0
Snow Falling: 3
Snow Lying: 11
Sleet: 0
Hail: 0
Gale: 0
Ice Days: 0

[Foxy2]

Huntsham (9.00 GMT data)

Simple Mean 4.05
Mean max 6.98
Mean min 1.12
Mean grass -1.18

High max 13.9 (29th)
low max -0.3 (8th)
high min 7.6 (28th, 29th)
Low min -7.1 (new Feb low but data only to 2003)
Grass low -15.2 (new record but data only back to Mid March 06)
Ice days 2
Air frosts 12
Grass frosts 16
Days of snow falling 1
Days of sleet 1
Days of Snow lying (complete cover) 4

Rainfall 36.0mm
Max fall 13.4mm (9th)
Days >0.2mm 8

This post has been edited by Foxy2: 01 March 2012 - 18:48

[Ian Williams]

Came in a tadge over average in terms of temperature but less than half the normal amount of rainfall. Cold first half of the month with my all time record February low of -4.6C in 2005 being beaten 3 times with -6.7C recorded on the 3rd a new month record. Also had 9 air frosts a new record beating the 7 i recorded in Feb 2004 and 2006.

A new record for Pressure - measured hourly my mean pressure was 1031.2mb this thrashes the previous record of 1023.5mb set in October 2007

uploads/monthly_03_2012/post-30656-0-49139100-1330965083_thumb.gif

Attached thumbnail(s)

• 

[Les]

Here are my weather stats for my site in the heart of the Midlothian countryside.I hope their of interest.


SUMMERY
It was a mainly mild month with the coldest weather in first 10 days.It was very dry with the wettest day on the 4th with 8.7mm and the 2nd wettest on the 18th with 3.9mm.There was freezing rain overnight of the 8th/9th,causing very slippery conditions.Pressure was generally high.

TEMPERATURES

Highest............................12.7C on the 28th
Lowest.............................-5.9C on the 2nd
Lowest Max..........................0.1c on the 2nd
Highest Min.........................8.4C on the 28th
Mean Max............................6.40C
Mean Min............................1.25C
MEAN................................3.82C

Days with....
Rain(1.0mm+).........................4
Snow.................................2
Sleet................................1
Fog..................................1
Thunder..............................0
Hail.................................0
Lying Snow(50%+).....................0
Air Frost...........................14
Total Rainfall......................20.4mm

PRESSURE

Highest..........................1040mbs on the 7th and 8th
Lowest............................995mbs on the 18th
MEAN.............................1017.5mbs

[ole blue eyes 1944]

Station Statistics for February 2012 AWS Burncross, Sheffield, South Yorkshire UK

TEMPERATURE

7.9 Mean Max c
+1.4 Diff from Average
2.9 Mean Min c
+1.4 Diff from Average
5.4 Mean c
+1.4 Diff from Average
17.2 High Max c 23rd
1.8 Low Max c 8th
11.3 High Min c 24th
-4.7 Low Min c 11th
-7.3 Grass Min c 11th


RAIN

20.5 Rain Total (mm)
30 % of Average
3 Wet days with >0.2 mm
5 Wet days with >1.0 mm
6.7 Most Rain in a day 22nd

NUMBER OF DAYS WITH.

6 Air frost (air min temp -0.1C or less)
15 Ground Frost (grass min temp -0.1C or less)
2 Sleet/Snow Falling
1 50% snow cover at morning observation hour
0 Thunder Heard
0 Small hail (<5mm diameter)
0 Large Hail (>=5mm diameter)
0 Fog at morning observation hour


SUNSHINE

60.05 Total Sunshine (hours)
94% of Average
8.61 Most in a day (hours)
19th Day of Most Sun
5 Sunless Days


WIND

0 Days with gale (10 min mean wind 39 mph or more)

Wind Direction number of days with wind from.

0 N
0 NE
0 E
6 SE
1 S
3 SW
9 W
1 NW
9 Calm

WIND GUST

Mean Wind Speed 3.6 mph
Maximum Gust 26.2 mph
Day of Max Gust 22nd


THUNDER EVENTS

None

OTHER MEASUREMENTS

77 Cloud Cover %
59 Mean Relative Humidity % (Taken at Morning Observation)
1025 Mean Pressure (mb) at 9:00 am GMT only
1041 Max pressure at any time of day 8th
1003 Min pressure at any time of day 18th

STATION NOTES.

February 2012 was a month which was dry and saw swings in temperature throughout the month. The month started with temperatures below normal and this lasted through until the 12th. On the 11th a minimum of -4.7c was recorded and at 09z the temperature had risen to -3.5c.

The rainfall was only 30% of the local average with 4.5mm falling as snow on the 4th. On the 4th the snow started about 14.30 hours and a slight covering snow again fell on the 8th but it was only flurries. The slight accumulation of the 4th lasted through until the 7th but only in patches

[BUTTERFLY]

Although 34 hours is the lowest total shown (at the often sunny Tiree in Western Scotland) for February 2012 at http://www.weatherca...d439ded82c.html, http://www.met.readi...rugge/PREV.html gives a total of 27.9 hours at Aldergrove, Co. Antrim, which broke its previous lowest February total of 30 hours in 1993 (see http://www.climate-u...onthly/1102.htm). Northern Ireland only had around 54% of its average sunshine; this may also be the lowest on record.