Pilots must request Special VFR clearance when conditions meet the parameters set by the FAA.
This includes visibility of at least 1 statute mile, remaining clear of clouds, and being instrument rated in an IFR capable aircraft at night.
Special VFR clearance is necessary when the reported weather is less than VFR minimums, such as when the airport has a green and white beacon spinning.
It can also be used when the ceilings are less than 1,000'.
The clearance must be requested from the control tower or Flight Service Station.
If the reported weather is less, a pilot can request a Special VFR Clearance.
Several conditions must be met; the visibility must be at least one statue mile, the pilot must remain clear of clouds and at night, the pilot must be instrument rated in an IFR capable aircraft.
Special VFR Clearance for Weather Under VFR Minima - PilotWorkshops
The Special VFR clearance exists to help VFR pilots/aircraft get in and out of controlled airfields when the field is IFR without an IFR clearance/flight plan.
It’s not an IFR clearance, so if your aircraft is a VFR-only aircraft, you can use special VFR (but only between sunrise and sunset).
What is a Special VFR Cloud Clearance? - ThinkAviation
If you're flying into or out of an airport that has Class E, D, C or B airspace to the surface, you need a minimum of 1,000' ceilings to operate under VFR.
If the ceilings are less than 1,000', you're going to need an IFR clearance to get in or out...or you're going to need a Special VFR clearance.
Special VFR Clearance: How To Use It | Boldmethod
The FAA authorizes Special VFR (SVFR) operations in weather conditions less than basic VFR minima, within Class B, Class C, Class D, or Class E surface areas below 10,000 feet MSL. SVFR flights may be approved only if arriving and departing IFR aircraft are not delayed, and non-radar or visual separation is authorized between SVFR fixed-wing aircraft, SVFR fixed-wing aircraft and SVFR helicopters. Radar vectors are authorized to expedite the entrance and exit of Class B, Class C, Class D, or Class E surface areas.
Special VFR (SVFR) - Federal Aviation Administration
Pilots can operate under either Visual or Instrument Flight Rules when weather conditions deteriorate from visual to instrument meteorological conditions. Special VFR (SVFR) operations may be authorized for aircraft operating in or transiting a Class B, Class C, Class D, or Class E surface area when the primary airport is reporting VFR but the pilot advises that basic VFR cannot be maintained. Pilots must meet certain requirements, such as maintaining clear of clouds and being instrument rated, and may request a Special VFR clearance from Air Traffic Control.
Special VFR (SVFR) - CFI Notebook
How to Request a Special VFR (SVFR) Clearance Requesting a special VFR clearance is relatively simple. If your destination is an airport with a control tower, the best place to …
What Is Special VFR: Pilotinstitute
Since VFR requirements include remaining at least 500 feet below clouds, and operating rules require us to be at least 500 feet above the surface—and the same distance from structures…
Special VFR - AVweb