Sjc tower local controller reported an arrival 2 miles from the airport was not established on final...

Attributes
ACN	1705465
Time
Date	201911
Local Time Of Day	1201-1800
Place
Locale Reference	SJC.Airport
State Reference	CA
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 4
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT

Narrative:

We are normally on runways 30 left/right. Today is the first day in a long time that the entire area was in an east plan due to strong winds and rain. TRACON had been vectoring all the aircraft inbound for runway 12R at different angles and altitudes all day long; with several overtakes and at least one go-around because of compression on final. Aircraft X was about 10 to 12 miles northwest of 3 miles west of final descending out of about 2100 ft. I think he even went into conflict alert with a satellite airport aircraft because that is what drew my attention to him. I don't remember the aircraft checking on; but within 2 miles the aircraft was still not on final; but had descended further. It was about at this time that TRACON shouted over the shout line; 'aircraft X; low altitude alert. Oh; no; he's not here.' I asked if aircraft X was on frequency. When he replied that he was; I told him to return to the previous frequency because I wasn't sure which frequency it should be. I am not qualified enough to respond to this question.

Original NASA ASRS Text

Title: SJC Tower Local Controller reported an arrival 2 miles from the airport was not established on final and TRACON relayed a Low Altitude Alert to them to issue to the pilot.

Narrative: We are normally on runways 30 L/R. Today is the first day in a long time that the entire area was in an east plan due to strong winds and rain. TRACON had been vectoring all the aircraft inbound for Runway 12R at different angles and altitudes all day long; with several overtakes and at least one go-around because of compression on final. Aircraft X was about 10 to 12 miles northwest of 3 miles west of final descending out of about 2100 ft. I think he even went into conflict alert with a satellite airport aircraft because that is what drew my attention to him. I don't remember the aircraft checking on; but within 2 miles the aircraft was still not on final; but had descended further. It was about at this time that TRACON shouted over the shout line; 'Aircraft X; low altitude alert. Oh; no; he's not here.' I asked if Aircraft X was on frequency. When he replied that he was; I told him to return to the previous frequency because I wasn't sure which frequency it should be. I am not qualified enough to respond to this question.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Sjc tower local controller reported an arrival 2 miles from the airport was not established on final and TRACON relayed a low altitude alert to them to issue to the pilot.