Regional Impacts
Local rainfall amounts of 20 mm for central sections of NF today.
Convective Discussion
This morning the low at 500mb/surface are located over Cabot strait and continue to move eastward passing east of the Avalon tonight. Ahead of these features, several curving bands of rain are detected by NF radar. Satellite shows colder cloud tops along the south coast and over central regions, but the Stephenville sounding shows that the instability is limiting vertical development to embedded ACC which could still give higher rainfall rates periodically during the day. There has not been any lightning activity detected by CLDN or GLM over the region since last night and none is anticipated for the rest of the day. The low feature will exit NF after midnight.
For Tuesday, the RDPS is indicating an area of potential instability west of Nain, but this activity will likely be limited to the 850-700mb level due to a mid-level inversion.. Otherwise dry conditions are expected Tuesday and Wednesday as an upper ridge builds over Atlantic Canada.
*Note that National Monitoring has an open ticket on the lightning sensor at Wabush Lake. They are unable to access the equipment since yesterday (June 18)
Thunderstorm Outlook for Today
