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Is this a heatburst?

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Nin3DSFan
Posts: 18
Joined: Sat 10 Oct 2015 6:14 pm
Weather Station: Fine Offset
Operating System: Windows 10
Location: Oxted, Surrey

Is this a heatburst?

Post by Nin3DSFan »

The temperature, dew point, wind, and humidity readings that my station somehow recorded were (over a 10 minute period):

00:07 = 17.5C, 9.2C, 1.4 mph, 58%
00:08 = 18.0C, 9.1C, 1.7 mph, 56%
00:09 = 18.2C, 9.0C, 2.0 mph, 55%
00:10 = 18.3C, 9.1C, 2.1 mph, 55%
00:11 = 18.3C, 9.1C, 2.1 mph, 55%
00:12 = 18.4C, 9.2C, 2.1 mph, 55%
00:13 = 18.6C, 8.8C, 2.5 mph, 53%
00:14 = 18.7C, 8.7C, 2.6 mph, 52%
00:15 = 18.8C, 8.7C, 2.7 mph, 52%
00:16 = 18.9C, 8.6C, 2.9 mph, 51%
00:17 = 19.1C, 8.4C, 2.8 mph, 50%

freddie
Posts: 796
Joined: Wed 08 Jun 2011 11:19 am
Weather Station: Davis Vantage Pro 2
Operating System: GNU/Linux Ubuntu 18.04 LXC
Location: Alcaston, Shropshire, UK
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Re: Is this a heatburst?

Post by freddie »

Nin3DSFan wrote:The temperature, dew point, wind, and humidity readings that my station somehow recorded were (over a 10 minute period):

00:07 = 17.5C, 9.2C, 1.4 mph, 58%
00:08 = 18.0C, 9.1C, 1.7 mph, 56%
00:09 = 18.2C, 9.0C, 2.0 mph, 55%
00:10 = 18.3C, 9.1C, 2.1 mph, 55%
00:11 = 18.3C, 9.1C, 2.1 mph, 55%
00:12 = 18.4C, 9.2C, 2.1 mph, 55%
00:13 = 18.6C, 8.8C, 2.5 mph, 53%
00:14 = 18.7C, 8.7C, 2.6 mph, 52%
00:15 = 18.8C, 8.7C, 2.7 mph, 52%
00:16 = 18.9C, 8.6C, 2.9 mph, 51%
00:17 = 19.1C, 8.4C, 2.8 mph, 50%
I saw similar last night but just before midnight. It is just a small rise in the wind speed leading to an increase in mixing of the air near the ground, which leads to warm air just above the surface being mixed downwards and causing a small temperature rise. It is quite common on nights with light (but not calm) winds.
Freddie
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jimkorman
Posts: 1
Joined: Wed 02 Aug 2017 9:54 pm
Weather Station: Davis Vantage Pro
Operating System: Windows 8
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Re: Is this a heatburst?

Post by jimkorman »

A heat burst normally looks more like these data - From central Nebraska, USA (June 11, 2013)

Note the over 20F temperature rise - as well as the drastic decrease in humidity.
Image

Jim Korman

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