There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest
Convective/Thunderstorm Discussion : Summer/Autumn 2021
Comments
-
-
-
-
-
-
Advertisement
-
-
-
-
-
The heat and high Dp's especially in Connacht from around early afternoon with low level convergence giving loads of instability potential on Fri and perhaps increasing DLS towards evening in the S of the country adding maybe to late evening activity. High Theta E readings giving plenty of moisture in the atmosphere to tap into , some big PPW readings giving heavy localized rainfall with spot flooding potential. Should produce some photogenic cells .
Soundings around E Galway /Offaly border.
7 -
Advertisement
-
-
-
-
-
-
Yeah they don't display all the strikes together as far as I know, here is a gif of the afternoon / early evening. A good tally in all today. Me Eireann have a good information about the The ATDnet Lightning Detection System and being optimised for detecting Cg strikes , see below
https://www.met.ie/climate/what-we-measure/lightning
Click on Pic below to enlarge if needed
7 -
-
Interesting to see AROMES prediction for tomorrow , big CAPE values high temperatures and Dp's, and high Theta E advecting across Ireland from the SE to the W and later another band in the S. It is predicting some heavy localized rainfall especially towards the W but the midlands could see some big downpours also, could see a yellow warning being issued tomorrow when they see if much kicks off. Interesting the temperature prediction chart showing the temperatures drop significantly tomorrow evening as the weather goes through the W especially, I wonder could a large cell form in all that heat ?? Would think that hail is a possibility maybe even large and maybe some locally strong gusty downdrafts. Watch the last wind chart below and believe me I am no expert but wondering if it would indicate a very large intense storm forming, it looks like huge outflow as it crosses the W coast and dissipates ??
5 -
-
-
Advertisement
-
-
-
Interesting from Dan Holley with convective Weather :
Day 2 Convective Outlook
VALID 06:00 UTC Fri 23 Jul 2021 - 05:59 UTC Sat 24 Jul 2021
ISSUED 21:40 UTC Thu 22 Jul 2021
ISSUED BY: Dan
IRELAND ...
Diurnal heating of moist low-levels (dewpoints could be as high as 17-19C in places, with air temperatures once again locally exceeding 30C) will yield substantial SBCAPE, potentially >1,500 J/kg. Gradual cooling aloft and lowering heights as the main upper low over Biscay slowly approaches from the south, combined with low-level convergence and some forced ascent over high ground will all contribute to scattered thunderstorms developing from around 12-13z. These are expected to become more numerous through the afternoon and early evening as they drift gradually WNW-wards.
Profiles suggest fairly unidirectional winds with height, with some modest flow in the mid-levels contributing to marginal wind shear, but the magnitude of CAPE coupled with a marked dry layer in the mid-levels suggests some active thunderstorms are likely, with frequent lightning and the potential for large hail 2-4cm in diameter. In fact, the strongest cells may perhaps display some transient supercellular structures. Strong outflow winds could gust over 50mph locally, and substantial cold pooling may develop in western Ireland later in the afternoon resulting in several daughter cells developing in clusters nearby. Most thunderstorms will likely decay during the mid-late evening, however some may persist and/or additional cells develop across Munster perhaps even into the early hours of Saturday. Given PWAT of 30-35mm and the potential for training of cells, flash flooding will also be possible.
13 -
-
-
-
-
-
-
Advertisement
-
![[Deleted User]](/applications/dashboard/design/images/defaulticon.png)
