Moderate Probability of Delays Expected at Philadelphia International (PHL) on May 4, 2021

Delays are expected at Philadelphia International (PHL) today. All times on this page are displayed in local time for Philadelphia International .

Risk Beginning Ending Details
Medium 2:00 AM on 5/4 4:00 AM on 5/4 More information
Medium 4:00 AM on 5/4 10:00 AM on 5/4 More information
Medium 10:00 AM on 5/4 12:00 PM on 5/4 More information

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Medium Probability of Delays Between 2:00 AM on 5/4 AND 4:00 AM on 5/4

During this time period the airport expects to experience low clouds and mist which will cause a medium likelihood that flights will experience delays.

Here is a look at what the forecast conditions are and what is required for normal operation:

Normal Forecast
Conditions None Mist, rain

Visibility Greater than 2 10
Wind Less than 11.8 MPH 4.7 MPH
Clouds Higher than 1,000 Overcast at 800

Medium Probability of Delays Between 4:00 AM on 5/4 AND 10:00 AM on 5/4

During this time period the airport expects to experience mist which will cause a medium likelihood that flights will experience delays.

Here is a look at what the forecast conditions are and what is required for normal operation:

Normal Forecast
Conditions None Mist

Visibility Greater than 2 10
Wind Less than 11.8 MPH 3.5 MPH
Clouds Higher than 1,000 Overcast at 1,000

Medium Probability of Delays Between 10:00 AM on 5/4 AND 12:00 PM on 5/4

During this time period the airport expects to experience mist which will cause a medium likelihood that flights will experience delays.

Here is a look at what the forecast conditions are and what is required for normal operation:

Normal Forecast
Conditions None Mist

Visibility Greater than 2 10
Wind Less than 11.8 MPH 5.9 MPH
Clouds Higher than 1,000 Overcast at 1,200

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