The following summaries cover selected significant meteorological events occurring in the National Weather Service Philadelphia/Mount Holly county warning area (CWA). The information provided on these pages should be considered preliminary. Please also refer to the Event Archives for more information.

2020

• 4 August 2020 Tropical Storm Isaias (Updated 7 August 2020)


• 10 July 2020 Tropical Storm Fay (Updated 13 July 2020)


• 6 July 2020 Severe Weather and Flash Flooding (Updated 12 July 2020)


• 3 June 2020 Derecho (Updated 11 July 2020)


• 7 February 2020 Squall Line (Updated 28 July 2020)

2019

• 31 October 2019 Severe Weather and Flash Flooding (Updated 15 July 2020)


• 29 June 2019 Widespread Severe Weather (Updated 30 July 2019)


• 19-20 June 2019 Significant Flash Flooding in Southeast Pennsylvania and Southern New Jersey (Updated 29 July 2019)


• 13 June 2019 Tornadoes/Wind Damage from Cecil to Camden County (Updated 18 June 2019)


• 2 June 2019 Severe Wind/Hail Event (Updated 16 June 2019)


• 30 May 2019 Delmarva Severe Storms and E PA/NJ Flooding (Updated 16 June 2019)


• 29 May 2019 Severe Weather Outbreak and Flash Flooding (Updated 16 June 2019)


• 28 May 2019 Severe Weather Outbreak (Updated 16 June 2019)


• 19 May 2019 E PA/N NJ Severe Storms (Updated 6 June 2019)


• 26 April 2019 Severe Weather (Updated 6 June 2019)


• 14-15 April 2019 Severe Weather (Updated 1 May 2019)


• 24 January 2019 Flooding (Updated 5 Feb 2018)

2018

• 5 December 2018 - Southern NJ Snow Event (Updated 9 Dec 2018)


• 24-25 November 2018 - Thanksgiving Weekend Flood Event (Updated 9 Dec 2018)


• 15-16 November 2018 - Winter Storm (Updated 9 Dec 2018)


• 2-3 November 2018 - Montgomery/Chester County Downbursts and Flooding in E PA and N NJ (Updated 8 Dec 2018)


• 11-12 October 2018 - Remnants of Michael Flooding NJ/Delmarva (Updated 13 Oct 2018; under construction)


• 2 October 2018 - Severe Thunderstorms and Flooding in E PA/N NJ (Updated 14 Oct 2018; under construction)


• 3-4 August 2018 - Flooding in Lehigh Valley and N NJ (Updated 14 Oct 2018)


• 15 May 2018 - Widespread Thunderstorm Wind Damage in E PA/N NJ (Updated 13 Oct 2018)