Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Lenni.
Use the Radar Maps link provided to understand the trajectory of a storm.
State: PATotal alerts: 2Updated: Jun 10, 2026 4:32am EDT
Heat Advisory
Area New Castle; Mercer; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
Heat Advisory issued June 10 at 2:24AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ
* WHAT...Heat index values up to 103 degrees expected.
* WHERE...In Delaware, New Castle County. In New Jersey, Mercer,
Camden, Gloucester, and Northwestern Burlington Counties. In
Pennsylvania, Delaware, Eastern Chester, Eastern Montgomery, Lower
Bucks, and Philadelphia Counties.
* WHEN...From 11 AM Thursday to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Heat Advisory
Area Berks; Lehigh; Northampton; Western Chester; Western Montgomery; Upper Bucks
Heat Advisory issued June 10 at 2:24AM EDT until June 12 at 8:00PM EDT by NWS Mount Holly NJ
* WHAT...Heat index values up to 101 degrees expected.
* WHERE...Berks, Lehigh, Northampton, Upper Bucks, Western Chester,
and Western Montgomery Counties.
* WHEN...From 11 AM Thursday to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
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Lenni weather report and traffic updates by locals
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