Thursday 29th April weather observations

[Summer Sun]

A dry night with variable cloud and calm

Temp 4.2c

[The PIT]

A dry start with patchy cloud and ground frost

Temp 2.5C, low 1.4C, Barometer 1009mb steady, Wind F1 NNW, Rainfall since midnight Nil.

 

[johnholmes]

Dry with variable CUSc and sunny spells, a low of 2.0 C

[Summer Sun]

Currently dry and mostly cloudy after heavy rain overnight bringing 4.6mm

Temp 5.1c with a low of 2.6c

[Terminal Moraine]

A dry night with clear periods and yet another ground frost. A sunny start to the morning but cloud increased rapidly from 0700 g.m.t and it's now mainly cloudy with a few sunny intervals.

At 0800 g.m.t

Temp; 4.2c

24 hr max; 9.8c

24 hr min; 1.0c

Grass min; -1.6c

Rainfall in 24 hrs ending 0800 g.m.t; Trace

Mean wind speed; 14 mph N

7 oktas Ac, Sc and Cu mediocris

Vis; over 80 km

[Polar Continental]

Thursday 29th April 2021

 

Clear spells overnight, widespread ground frost  and just missing an air frost. Short shower which was possibly wintry around dawn. Sunny spells this morning, cloud bubbling up quickly producing showers in the area. A few spots of rain here at obs.

Now 24 ground frosts here this April, obliterating the local record which stood at 17 in 1991 and 2016. Air frost record also broken with 12. Previous record was 11 in 2016.

24-hour maximum 11.3c
24-hour minimum 0.0c

Minimum temperature on grass –3.5c
Maximum wind gust: (Midnight to Midnight) 20.7mph ENE

Rainfall total: tr.mm
 
Conditions at 09:00 GMT
 
6 Oktas Cumulus mediocris and congestus.

Visibility >10 miles
Temperature: 7.5c
Humidity 79.9%
Wind Direction E force 2-3

Barometer 1011.7mb Trend rising slowly.
 
Yesterday.

 

A cloudy night, some light to moderate showery rain. Overcast this morning, showery light rain. No further showers after mid morning here. Bright spells with hazy sunny spells late morning and in to the afternoon.

[The PIT]

A chilly morning with light showers some containing gruapal

Temp 8C, Barometer 1010mb rising, Wind F2 NNW, Rainfall Trace

[The PIT]

A cool afternoon with a couple of light showers. There was a large temperature drop in these showers despite being very light showing how cold the air is without the sun to warm it up.

Max temp 10.8C, now 6.4C, Barometer 1011mb rising slowly, Wind F1 NNE, Rainfall 0.2mm

[johnholmes]

wettest day of the month with 1.2 mm, this afternoon, still probably a record dry month but not yet checked

 

[Terminal Moraine]

Apart from a very brief, light shower of rain and soft hail mid afternoon the day has been dry with sunny intervals.

At 1700 g.m.t

Temp; 6.6c

Max today; 10.0c

Min last night; 1.0c

Grass min; -1.6c

Rainfall from 0800-1700 g.m.t; Trace

Sunshine today so far; 5.6 hrs

Mean wind speed; 12 mph NE

Highest gust today; 26 mph N at 0906 g.m.t

3 oktas Cu congestus, Cb and Ac

Vis; 80 km

[Stargazer]

Dry and cold with sunny spells, cloudier in the afternoon. Maximum 11.1, minimum 2.0. Wind light N.