Thread: Amazing Day
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Old January 29th 04, 10:15 AM posted to uk.sci.weather
Joan Lee Joan Lee is offline
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First recorded activity by Weather-Banter: Sep 2003
Posts: 10
Default Amazing Day

Hello

Yes, just as I thought we were missing out in the "soft south" as
usual, on Wednesday, the wind got up; then, we had thunder, lightening
and hail turning to snow. All within the space of ten minutes from
just after 17:30h. The snow continued until about 18:15h but the
temperature continued dropping rapidly after the sky cleared. During
Wednesday afternoon and evening, I recorded relatively rapid changes
in temperature, pressure and relative humidity (see below) The snow
has yet to melt and register as precipitation in my rain gauge,
though.

Time
13:47 5.3C 63% RH 1003 millibars(falling from 1007mb AM)
16:49 5.1C 65% RH 999
17:37 3.3C 75% 998 thunder, lightening, hail, snow
18:01 0.9C 92% 1000 snow settling
18:17 0.7C 96% 1001 snow stopping
19:03 -0.3C 92 1002
19:32 -1.4C 88 1003
19:56 -2.0C 89 1003 sky clear, moon out
20:31 -2.5C 89 1004
21:11 -3.0C 89 1004
21:35 -3.2C 88 1004

For the rest of the evening, the temperature stayed at around -3.2C. I
expected the temperature to fall further overnight, as it was clear.
However, it rose slightly overnight to -2.1C at 6:45h on Thursday
morning. It stayed below freezing until after 9.15am.

Joan (Fleet, Hampshire)