uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged.

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Old July 1st 08, 10:03 PM posted to uk.sci.weather
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Default June 2008 - Pitsford Hall, Northants

PITSFORD HALL WEATHER STATION
NORTHAMPTON, UNITED KINGDOM

WEATHER REVIEW - JUNE 2008

Air Temperatures
The Highest Maximum: 25.0 C on 9th
The Lowest Maximum: 14.3 C on 12th
The Highest Minimum: 15.0 C on 28th
The Lowest Minimum: 6.5 C on 16th
The Mean Maximum: 19.1 C
The Mean Minimum: 10.3 C
The Overall Mean: 14.7 C
Difference from the Monthly Mean: +0.4 C

Black Bulb
Maximum (at 0900): 35.0 C on 9th
Mean (at 0900): 23.4 C

Relative Humidity:
Highest Relative Humidity (at 0900): 98.9 % on 3rd
Lowest Relative Humidity (at 0900): 53.5 % on 9th
Mean Relative Humidity (at 0900): 72.3 %

Dew Point:
The Highest Dew Point (0900): 12.9 C on 3rd & 8th
The Lowest Dew Point (at 0900): 6.6 C on 15th
The Mean Dew Point (at 0900): 10.1 C

Rainfall:
Total: 39.9 mm
Difference from the Monthly Mean: 69.9 %
Duration: 42.9 hrs
Highest 24 hour fall (0900 to 0900): 10.9 mm on 2nd
Rain Days (/=0.2mm): 8
Wet Days (/=1.0mm): 8

Sunshine:
Total Duration of Bright Sunshine: 219.4 hrs
Sunniest day: 11.7 hrs on 19th
No. of days without sunshine: 3
Difference from the Monthly Mean: 139.2 %
Cloud cover (mean at 0900): 5.7 oktas (71.3 %)

Pressure (reduced to sea level at 09:00):
The Highest Pressu 1025.8 mb on 9th
The Lowest Pressu 1006.2 mb on 22nd
Mean Pressure (recorded at 0900): 1016.4 mb

Winds
Run of wind (mean over 24 hrs): 98.3 miles
Mean daily wind speed: 5.3 mph
Run of wind (cumulative): 2949.5 miles
Highest Maximum Gust: 36 mph on 22nd
No. of gusts of 50mph or mo 0
Highest wind strength (at 0900): 16.1 mph on 14th
Mean wind strength (at 0900): 8.2 mph

Winds from the Following Directions:

N 6 NE 3 E 1 SE 1 S 3 SW 4 W 4 NW 8 Calm 0

Concrete
Lowest Concrete Minimum: 5.2 C on 16th
Mean Concrete Minimum: 9.0 C

Evaporation
Piche 98.7 ml
Pan 97.04 mm

Days with:
Thunder: 0
Hail 5mm: 0
Hail /=5mm: 0
Snow or snow & rain: 0
Snow lying: 0
Fog: 0
Air Frost: 0
Gales: 0

All data © Pitsford Hall weather station.



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Old July 2nd 08, 10:36 AM posted to uk.sci.weather
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Default June 2008 - Pitsford Hall, Northants

On 1 Jul, 22:03, "Mike Lewis" wrote:
PITSFORD HALL WEATHER STATION
NORTHAMPTON, UNITED KINGDOM

N 6 NE 3 E 1 SE 1 S 3 SW 4 W 4 NW 8 Calm 0
All data © Pitsford Hall weather station.


Hi Mike and COL people on UkSci.weather.

When you use just 8 compass points for the wind direction, what
happens to SSW, WSW etc?

Just wondered!

Steve J

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Old July 2nd 08, 08:46 PM posted to uk.sci.weather
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Default June 2008 - Pitsford Hall, Northants

Hi Steve

In Appendix III of the Observer's Handbook there is a table which
demonstrates the method of reduction of wind directions from 16 to 8 compass
points. On a routine daily basis, we do record to 16 compass points but as
you know the COL summary requires 8.

In short, the number of occurrences of wind from NNW, SSE etc. is 'shared'
between the two nearest compass points. For example, if NNW were recorded on
4 occasions, 2 would be added to NW and 2 added to N. Where you have an odd
number they are shared such the extra observation is thrown clockwise, e.g.
5 observations of SSE would result in 2 being added to SE and 3 to S.

I hope this is clear...but as I say the Observer's Handbook does explain it
quite well.

Regards

Mike

"Steve J" wrote in message
...
On 1 Jul, 22:03, "Mike Lewis" wrote:
PITSFORD HALL WEATHER STATION
NORTHAMPTON, UNITED KINGDOM

N 6 NE 3 E 1 SE 1 S 3 SW 4 W 4 NW 8 Calm 0
All data © Pitsford Hall weather station.


Hi Mike and COL people on UkSci.weather.

When you use just 8 compass points for the wind direction, what
happens to SSW, WSW etc?

Just wondered!

Steve J




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