Delays Expected at Washington Dulles International (IAD) on February 20, 2019

Delays are expected at Washington Dulles International (IAD) today.

Medium Probability of Delays Between 10:00 AM on 2/20 AND 11:00 AM on 2/20

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 5.9 MPH
Clouds Higher than 1,000 Overcast at 8,000

Medium Probability of Delays Between 11:00 AM on 2/20 AND 12:00 PM on 2/20

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 5.9 MPH
Clouds Higher than 1,000 Overcast at 2,500

Medium Probability of Delays Between 12:00 PM on 2/20 AND 4:00 PM on 2/20

During this time period the airport expects to experience low clouds and 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 0.5
Wind Less than 11.8 MPH 7.1 MPH
Clouds Higher than 1,000 Overcast at 800

Medium Probability of Delays Between 4:00 PM on 2/20 AND 6:00 PM on 2/20

During this time period the airport expects to experience low clouds and 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 1.0
Wind Less than 11.8 MPH 8.2 MPH
Clouds Higher than 1,000 Overcast at 800

High Probability of Delays Between 6:00 PM on 2/20 and 9:00 PM on 2/20

During this time period the airport expects to experience low clouds and mist 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 Mist

Visibility Greater than 2 1.0
Wind Less than 11.8 MPH 9.4 MPH
Clouds Higher than 1,000 Overcast at 300

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.

The following flights may be impacted:

Departure Airport Airline Flight Departure Time Arrival Time
KATL Air France AF 2079 17:21 19:02
KATL KLM KL 6404 17:21 19:02
KATL Virgin Atlantic VS 4460 17:21 19:02
KATL WestJet WS 8014 17:21 19:02
KATL Delta Air Lines DL 2237 17:21 19:02
GMMN Royal Air Maroc AT 218 16:25 19:15
LTBA Pakistan International Airlines PK 5007 15:25 19:20
LTBA Singapore Airlines SQ 6207 15:25 19:20
LTBA Turkish Airlines TK 7 15:25 19:20
KDEN United Airlines UA 461 14:10 19:23
KCLT American Airlines AA 1733 18:03 19:30
MDPC United Airlines UA 1669 16:45 19:36
EGLL Air Canada AC 5351 16:20 19:40
EGLL Lufthansa LH 9266 16:20 19:40
EGLL Austrian OS 7807 16:20 19:40
EGLL United Airlines UA 925 16:20 19:40
KEWR SAS SK 6772 18:30 19:50
KEWR TAP Portugal TP 8506 18:30 19:50
KEWR United Airlines UA 1139 18:30 19:50
MMUN United Airlines UA 1133 16:51 20:04
MSLP ANA NH 7836 14:57 20:10
MSLP TACA TA 6658 14:57 20:10
MSLP Turkish Airlines TK 9401 14:57 20:10
MSLP AVIANCA AV 580 14:57 20:10
MSLP Avianca Costa Rica LR 580 14:57 20:10
EDDF Air Canada AC 5985 17:00 20:10
EDDF Lufthansa LH 9252 17:00 20:10
EDDF United Airlines UA 933 17:00 20:10
KIAH AVIANCA AV 2131 16:35 20:23
KIAH Air New Zealand NZ 6633 16:35 20:23
KIAH United Airlines UA 321 16:35 20:23
KCHO United Airlines UA 4815 19:45 20:30
KCHO Air Wisconsin ZW 4815 19:45 20:30
KLAX Azul AD 7055 12:55 20:33
KLAX Air China CA 7263 12:55 20:33
KLAX Air New Zealand NZ 9572 12:55 20:33
KLAX Asiana Airlines OZ 6286 12:55 20:33
KLAX United Airlines UA 653 12:55 20:33
KMDT United Airlines UA 3881 19:45 20:39
KMDT Air Wisconsin ZW 3881 19:45 20:39
EGLL American Airlines AA 6193 17:05 20:40
EGLL Finnair AY 5533 17:05 20:40
EGLL Aer Lingus EI 8993 17:05 20:40
EGLL Iberia IB 7449 17:05 20:40
EGLL British Airways BA 293 17:05 20:40
KORD Air Canada AC 5242 18:00 20:45
KORD Air New Zealand NZ 2453 18:00 20:45
KORD United Airlines UA 225 18:00 20:45
KLGA United Airlines UA 6261 19:25 20:46
KLGA Mesa Airlines YV 6261 19:25 20:46
KPIT AVIANCA AV 2089 19:45 20:47
KPIT United Airlines UA 6015 19:45 20:47
KPIT Mesa Airlines YV 6015 19:45 20:47
KAUS United Airlines UA 6150 16:45 20:50
KAUS Mesa Airlines YV 6150 16:45 20:50
KROC United Airlines UA 4807 19:30 20:54
KROC Air Wisconsin ZW 4807 19:30 20:54
KGSP Air Canada AC 4728 19:30 20:54
KGSP United Airlines UA 6005 19:30 20:54
KGSP Mesa Airlines YV 6005 19:30 20:54
KCVG Air Canada AC 4866 19:35 20:56
KCVG United Airlines UA 6113 19:35 20:56
KCVG Mesa Airlines YV 6113 19:35 20:56
CYOW Air Canada AC 4694 19:20 20:58
CYOW United Airlines UA 6235 19:20 20:58
CYOW Mesa Airlines YV 6235 19:20 20:58
KSFO Azul AD 7053 13:10 20:59
KSFO Air China CA 7314 13:10 20:59
KSFO Air New Zealand NZ 9166 13:10 20:59
KSFO United Airlines UA 727 13:10 20:59

High Probability of Delays Between 9:00 PM on 2/20 and 12:00 AM on 2/21

During this time period the airport expects to experience low clouds and mist 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 Mist, rain

Visibility Greater than 2 1.0
Wind Less than 11.8 MPH 8.2 MPH
Clouds Higher than 1,000 Overcast at 300

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.

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