Delays are expected at Washington Dulles International (IAD) today. All times on this page are displayed in local time for Washington Dulles International .
| Risk | Beginning | Ending | Details |
| Medium | 8:00 AM on 2/22 | 9:00 AM on 2/22 | More information |
| Medium | 9:00 AM on 2/22 | 10:00 AM on 2/22 | More information |
| High | 10:00 AM on 2/22 | 2:00 PM on 2/22 | More information |
| Medium | 2:00 PM on 2/22 | 3:00 PM on 2/22 | More information |
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Medium Probability of Delays Between 8:00 AM on 2/22 AND 9:00 AM on 2/22
During this time period the airport expects to experience snow which will cause a medium likelihood that flights will experience delays.
Snow causes many issues at airports, reducing the visibility for landing aircraft and making the runway slippery. Airports that typically see a lot of snow will have the resources to clean up, but heavy snowstorms may cause extended delays.
Here is a look at what the forecast conditions are and what is required for normal operation:
| Normal | Forecast | |
| Conditions | None | Snow |
| Visibility | Greater than 2 | 10 |
| Wind | Less than 11.8 MPH | 10.6 MPH gusting to 23.5 MPH |
| Clouds | Higher than 1,000 | Overcast at 6,000 |
Medium Probability of Delays Between 9:00 AM on 2/22 AND 10:00 AM on 2/22
During this time period the airport expects to experience snow which will cause a medium likelihood that flights will experience delays.
Snow causes many issues at airports, reducing the visibility for landing aircraft and making the runway slippery. Airports that typically see a lot of snow will have the resources to clean up, but heavy snowstorms may cause extended delays.
Here is a look at what the forecast conditions are and what is required for normal operation:
| Normal | Forecast | |
| Conditions | None | Snow, rain |
| Visibility | Greater than 2 | 10 |
| Wind | Less than 11.8 MPH | 11.8 MPH gusting to 23.5 MPH |
| Clouds | Higher than 1,000 | Overcast at 3,500 |
High Probability of Delays Between 10:00 AM on 2/22 and 2:00 PM on 2/22
During this time period the airport expects to experience low visibility which will cause a high 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 | Snow, rain |
| Visibility | Greater than 2 | 0.5 |
| Wind | Less than 11.8 MPH | 10.6 MPH gusting to 27.0 MPH |
| Clouds | Higher than 1,000 | Overcast at 800 |
While the weather conditions should be good enough to land aircraft the low visibility caused by these weather conditions will probably require ATC to slow down the flow of traffic to ensure that aircraft arrive safely.
Medium Probability of Delays Between 2:00 PM on 2/22 AND 3:00 PM on 2/22
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 |
| Visibility | Greater than 2 | 10 |
| Wind | Less than 11.8 MPH | 12.9 MPH gusting to 27.0 MPH |
| Clouds | Higher than 1,000 | Overcast at 800 |