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Convective/Thunderstorm Discussion : 2019 and Winter 2020
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Sferic showed up here in N Kerry early this morning . Hit and miss showers but remained dry here near Tralee during daylight hours. Drove through some very heavy showers near Killorglin but would be dry a couple of Km's down the road.
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Meteorite58 wrote: »Sferic showed up here in N Kerry early this morning . Hit and miss showers but remained dry here near Tralee during daylight hours. Drove through some very heavy showers near Killorglin but would be dry a couple of Km's down the road.
Jesus, all the lightning0 -
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ECM showing a bit of convection potential running off or along Southern coasts later tonight / early morning.
Nice bit of Deep Layer Shear available and a convergence zone off the SW which might aid the development of some big enough convection that might become electrified but not sure . Might get a few sferics over water, or the Mountains along the SW might help give a bit of lift. Maybe Cork later ?
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Occluded front and trough passing down over the country tomorrow with reasonable CAPE readings giving some heavy convective showers and perhaps brief pulse type thunderstorms.
Blustery early on across the country and then easing to breezy later in the afternoon.
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For a few days ECM has been showing potential thunderstorms for Saturday , primarily in the SE and E.
LP staying off and moving up along the W coast introducing a fresh humid moisture laden SE airflow giving scattered showers , prolonged in places and some heavier localized thundery rain. There is quite a bit of LLS and DLS aiding instability with Dp's of about 15 or 16C. Looks like a Negative tilted Trough.
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Waterford shows up as a potential hot spot tomorrow morning / early afternoon for thunderstorm activity with some heavy rain possible in the SE in the morning.
Trough tilted negatively over Ireland tomorrow followed by frontal activity. Will see if it produces lightning.
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http://www.convectiveweather.co.uk/forecast.php?date=2019-09-21
Day 1 Convective Outlook
VALID 06:00 UTC Sat 21 Sep 2019 - 05:59 UTC Sun 22 Sep 2019
ISSUED 07:12 UTC Sat 21 Sep 2019
ISSUED BY: Dan
Atlantic upper trough will disrupt during Saturday, digging towards Biscay while becoming increasingly negatively-tilted. As a result, continued advection of a relatively high Theta-W airmass will occur from Biscay across SW England and Ireland, aided by isentropic upglide and a strong low-level jet. A corridor of elevated instability will exist, rooted from around 850mb, with 300-500 J/kg MLCAPE at times. This whole NNW - SSE oriented instability plume will shift gradually northeastwards through this forecast period, straddling a zone from SW Scotland to SE England by 06z Sunday.
Subtle forcing running northwestwards along this instability plume, ahead of the largescale upper trough, will encourage pulses of medium-level instability release at various times through Saturday and Saturday night. It is likely clusters of elevated showers will develop in a rather semi-random fashion, drifting to the N or NNW.
Consequently, sporadic lightning activity is likely in places within the instability plume, but trying to pick specific areas where this is more likely is rather difficult due to the crucial phasing of subtle forcing overlapping sufficient instability, which in itself is a little meagre. Given the uncertainty and marginality, a broad low-end SLGT has been issued for now, but confidence on much in the way of lightning is rather low and it is likely many areas within the SLGT will remain void of lightning.0 -
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