Atlanta/North Georgia [9:00am EDT, 4/5]
***Weather Update***
Tom Moore here ... Here is an update regarding the ongoing severe weather event that is affecting our region today (in addition to our original post from last evening).
Round 1 is proceeding as planned as thunderstorms have developed in association with an advancing warm front. This front continues to move northward. Severe thunderstorms (some with large hail) are mainly confined to counties south of Atlanta. This activity will continue through most of the morning hours.
Round 2 will occur this afternoon, after a break from the first round, as scattered thunderstorms will erupt. Some of these storms will be severe, with large hail and damaging winds. There is also the possibility of a few tornadoes.
Round 3 will occur this evening as a squall line (line of severe thunderstorms) will move through the area in advance of a strong cold front. Damaging winds and isolated tornadoes are possible.
➤ Deep Gulf moisture is advecting northward and will take hold across our region. As upper-level dynamics increase today, owing to a deepening upper-level trough and veering surface winds, thunderstorms are expected.
➤ The magnitude of instability (CAPE) and low-level wind shear support the formation of discrete supercells, each with the potential for producing very large hail greater than 2 inches in diameter and tornadoes.
➤ As atmospheric precipitable water content increases, so too will the threat of heavy rain and localized flooding.
➤The potential for flash flooding will increase during the afternoon as upper-level winds become nearly parallel to the front – a configuration favorable for training thunderstorms
Harrison Sincavage and Tom Moore, Meteorologist,
iWeatherNet.com