• Watch vs. Warning: Explained


Local weather alerts previously issued by the National Weather Service since 09/21/2013.

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Wednesday June 10, 2026
16 total alerts issued on this day
LOCATIONS & ALERT COUNT: New Castle  1  Chester  1  Chesapeake Bay north of Pooles Island MD  2  Lancaster  2  
 
New Castle
HTY.gif   HEAT ADVISORY   (2 updates)
Areas affected: New Castle; Mercer; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
Effective: Jun 10 2:24 am Expired: Jun 10 4:00 pm Duration: 13 hrs   36 mins  
Areas affected: New Castle; Mercer; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
Effective: Jun 10 2:36 pm Expired: Jun 11 5:00 am Duration: 14 hrs   24 mins  
Chester
HTY.gif   HEAT ADVISORY   (4 updates)
Areas affected: New Castle; Mercer; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
Effective: Jun 10 2:24 am Expired: Jun 10 4:00 pm Duration: 13 hrs   36 mins  
Areas affected: Berks; Lehigh; Northampton; Western Chester; Western Montgomery; Upper Bucks
Effective: Jun 10 2:24 am Expired: Jun 10 4:00 pm Duration: 13 hrs   36 mins  
Areas affected: New Castle; Mercer; Gloucester; Camden; Northwestern Burlington; Delaware; Philadelphia; Eastern Chester; Eastern Montgomery; Lower Bucks
Effective: Jun 10 2:36 pm Expired: Jun 11 5:00 am Duration: 14 hrs   24 mins  
Areas affected: Berks; Lehigh; Northampton; Western Chester; Western Montgomery; Upper Bucks
Effective: Jun 10 2:36 pm Expired: Jun 11 5:00 am Duration: 14 hrs   24 mins  
Chesapeake Bay north of Pooles Island MD   2 alerts
SCY.gif   SMALL CRAFT ADVISORY   (2 updates)
Areas affected: Chesapeake Bay north of Pooles Island MD; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD
Effective: Jun 10 3:09 am Expired: Jun 10 12:00 pm Duration: 8 hrs   51 mins  
Areas affected: Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Chester River to Queenstown MD; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; Patuxent River to Broomes Island MD; Tangier Sound and the inland waters surrounding Bloodsworth Island
Effective: Jun 10 10:45 am Expired: Jun 10 6:45 pm Duration: 8 hrs   00 mins  
SMW.gif   SPECIAL MARINE WARNING   (2 updates)
SMWLWX
Areas affected: Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Patapsco River including Baltimore Harbor
Effective: Jun 10 3:27 pm Expired: Jun 10 5:30 pm Duration: 2 hrs   03 mins  
For the following areas... Chesapeake Bay from Pooles Island to Sandy Point MD... Chesapeake Bay north of Pooles Island MD... Patapsco River including Baltimore Harbor... At 430 PM EDT, strong thunderstorms were located along a line
Areas affected: Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Patapsco River including Baltimore Harbor
Effective: Jun 10 4:30 pm Expired: Jun 10 5:30 pm Duration: 1 hr   00 mins  
Lancaster   2 alerts
SPS.gif   SPECIAL WEATHER STATEMENT   (5 updates)
At 327 PM EDT, Doppler radar was tracking a strong thunderstorm near
Areas affected: Dauphin; Schuylkill; Lebanon; Lancaster
Effective: Jun 10 3:28 pm Expired: Jun 10 4:15 pm Duration: 0 hrs   47 mins  
At 410 PM EDT, Doppler radar was tracking a strong thunderstorm over
Areas affected: Lebanon; Lancaster
Effective: Jun 10 4:11 pm Expired: Jun 10 4:45 pm Duration: 0 hrs   34 mins  
At 357 PM EDT, Doppler radar was tracking a strong thunderstorm over
Areas affected: Dauphin; Cumberland; York; Lancaster
Effective: Jun 10 3:58 pm Expired: Jun 10 4:30 pm Duration: 0 hrs   32 mins  
At 356 PM EDT, Doppler radar was tracking a strong thunderstorm over
Areas affected: Lancaster
Effective: Jun 10 3:57 pm Expired: Jun 10 4:30 pm Duration: 0 hrs   33 mins  
At 429 PM EDT, Doppler radar was tracking a strong thunderstorm over
Areas affected: York; Lancaster
Effective: Jun 10 4:29 pm Expired: Jun 10 5:00 pm Duration: 0 hrs   31 mins  
HTY.gif   HEAT ADVISORY  
Areas affected: Dauphin; Lebanon; Cumberland; Adams; York; Lancaster
Effective: Jun 10 5:36 pm Expired: Jun 11 12:00 pm Duration: 18 hrs   24 mins  

 

 

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