Excessive Heat Warning/Heat Advisory

The National Weather Service has issued a warning/advisory for Metropolitan Philadelphia, the Lehigh Valley and Berks County:

THIS EXCESSIVE HEAT IS EXPECTED TO WORSEN THURSDAY AND FRIDAY WITH THE HEAT WAVE PROBABLY LINGERING INTO SATURDAY. THE HIGHEST HEAT INDICES… OF AROUND 105 DEGREES… SHOULD OCCUR THURSDAY AND FRIDAY AFTERNOONS. LOW TEMPERATURES IN THE URBAN CENTERS INCLUDING PHILADELPHIA WEDNESDAY NIGHT THROUGH FRIDAY NIGHT…SHOULD BE CLOSE TO 80 DEGREES. RELIEF IN THE FORM OF SIGNIFICANTLY COOLER TEMPERATURES IS EXPECTED TO ARRIVE SUNDAY.