Epping Weather Station

Monthly Summary: February 2012(Daily Readings)

Temperature °C
  Date or compared to 1981-2010 average
Mean Maximum
6.7º
-0.5º
Mean Minimum
0.9º
-0.7º
Monthly Mean
3.8º
-0.6º
Highest Maximum
17.7º
23rd
Lowest Maximum
-1.2º
11th
Highest Minimum
8.6º
24th
Lowest Minimum
-8.4º
11th
Lowest Grass Min
-13.7º
11th
Wind mph
Mean wind speed
5.3
Strongest Gust
34
18th
Dominant Direction
SW
Direction at 0900
N
NE
E
SE
S
SW
W
NW
CALM
No of mornings
4
2
5
0
3
4
8
2
1
Precipitation mm
Date or compared to 1981-2010 average
Monthly Total
21.4
49.1%
Wettest Day
13.3
4th
Rain Days (>0.2mm)
7
Wet Days (>1mm)
4
Sunshine hours
Monthly Total
100.41
% Average
122.0%
Days with no sun
6
Sunniest day
9.14
Hours
23rd
Number of days with
Air Frost
14
Ground Frost
16
Snow/sleet falling (0000-2400GMT)
6
>50% snow cover at 0900
9
Fog at 0900 (vis <1000m)
1
Thunder heard
0
Hail <5mm diameter
0
Hail > 5mm diameter
0

 

Miscellaneous Data
Mean Relative Humidity at 0900 (%)
88.2
Mean Air Pressure at 0900 (mb)
1029.4
Lowest Pressure 1006.0mb
Date
18th
Highest Pressure 1042.6mb
Date
7th
Hours of air frost
236.0
Mean soil temp °C (20cm depth)
3.1
Greatest snow depth (0900)
15
Date
5th
Particular days/events

1st-3rd almost unbroken sunshine
2nd Ice day
4th Ice day
4th 13.3mm precipitation - all fell as snow
4th/5th Heavy snow overnight
Snow depths at 0900
5th 15cm, 6th 11cm, 7th 8cm, 8th 7cm, 9th 7cm, 10th 10cm, 11th 9cm, 12th 8cm, 13th 6cm.
8th Ice day
9th/10th Snow overnight
10th/11th Tmin -8.4º, grass min -13.7, the coldest night for 25 years
11th Ice day Tmax of -1.2º is coldest February day since 1986
12th Freezing rain with glaze at 0800
23rd Tmax of 17.7º, the warmest February day since 1998

 

Month as a whole

A month of contrasts and extremes. The first half of the month was very cold with easterly winds, some heavy snow and severe frosts. The second half of the month saw much milder westerly winds and temperatures recovering towards normal. At mid month the monthly temperature anomaly was running at -6.0º below the 1981-2010 long term average. By the end of the month this had recovered to -0.6º With a Tmin of -8.4º and Tmax of 17.7º this was the most extreme February temperature range on record (since 1979) Coldest February since 2010 and second coldest since 1996. February has generally been a much more Spring-like month here in the last 20 years or so. Driest and sunniest February since 2008 Precipitation so far this year is 61.0mm, only 58% normal for this period

 

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(amended January 2009)

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