Campus Alert Archive
Stanford

Phoned-in shooting threat at the campus entrance deemed not credible after search

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CAthreat of violenceemergency notificationhigh confidence
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UnfoundedNo evidence of an actual threat was found. The institutional response is documented because the alert communication is identical to what would occur during a real incident.

An unidentified caller phoned the Palo Alto Police Department's non-emergency line at 12:40 p.m. PST stating he was at the entrance to campus and intended to commit a shooting. Stanford issued an AlertSU at 1:25 p.m. PST out of an abundance of caution, and police declared the threat not credible at approximately 3:14 p.m. PST after a campus-wide search.

Alerts
2
Response
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Killed
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Injured
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Institution
Stanford University
Private R1 · CA
All Stanford cases →
~17,680 studentsAlertSU
Official alert policy
Read when and how Stanford says it will use AlertSU: summarized, quoted, and analyzed.
Documented Timeline

Alert Sequence

2 messages in sequence · 2 verified verbatim

Confirmed wording is transcribed character-for-character from a primary source. Use Verify this quote under each message to open that source in a new tab and compare the text yourself.

INITIAL ALERTSMS
Verified verbatim388 chars
AlertSU: On 02/16/2024 at 12:40pm, an unidentified person called the non-emergency phone at Palo Alto dispatch stating he was at the entrance to campus and intended to commit a shooting. DPS responded immediately to the area and has been evaluating the veracity of the call. Out of an abundance of caution, we are notifying the Stanford community. Call 911 if you see anything suspicious.
Verify this quote
Stanford Department of Public Safety AlertSU archivepolice.stanford.eduarchived copy
Verbatim text from the official Stanford AlertSU archive (alertid=1408), confirmed via search snippets including 'Out of an abundance of caution' framing
Sent at 1:25 p.m. PST on February 16, 2024, 45 minutes after the threatening call was received at 12:40 p.m. PST
Notably, the alert did NOT instruct students to shelter in place, which suggests police assessed the threat as low-credibility from the outset
The caller used the Palo Alto police non-emergency line rather than 911
ALL CLEARSMS+1h 49m
Verified verbatim246 chars
AlertSU Update: DPS responded to several locations on campus in response to the threat and has since conducted additional investigation. At this time, DPS has no additional information that lends credibility to the threat of a shooting on campus.
Verify this quote
Stanford Department of Public Safety AlertSU archive (verbatim text confirmed in Palo Alto Online and Stanford Daily reporting)police.stanford.eduarchived copy
Issued at approximately 3:14 p.m. PST on February 16, 2024, about 1 hour and 49 minutes after the initial alert
The exact phrasing 'no additional information that lends credibility to the threat of a shooting on campus' appears verbatim in multiple news outlets quoting the AlertSU
The update notably does not issue an explicit 'all clear', it frames the result as absence of evidence rather than confirmed safety
Message elements

How the first alert is built

To check this alert, Claude (an AI) read it in full 25 separate times, independently. Each read decided whether the message answers each of the six questions and gave a short reason. A final reviewer then weighed all 25 and wrote the plain-English verdict you see when you open a row. The score (for example 22/25) is how many reads agreed; the 25 individual reads are tucked underneath if you want to check them.

AlertSU: On 02/16/2024 at 12:40pm, an unidentified person called the non-emergency phone at Palo Alto dispatch stating he was at the entrance to campus and intended to commit a shooting. DPS responded immediately to the area and has been evaluating the veracity of the call. Out of an abundance of caution, we are notifying the Stanford community. Call 911 if you see anything suspicious.

  • Sourcepresent25/25

    Final assessment

    All 25 reads agree the source is present; the message opens with the branded AlertSU tag and names DPS, clearly identifying the sender.

    Who is sending the alert and who is responding. People act faster on a message from a clearly identifiable, credible sender, such as a named department, the police, or a branded alert system, than on an anonymous notice. A branded signature counts.

    See all 25 individual reads
    1. present: Opens with branded signature "AlertSU" and names "DPS".
    2. present: It opens "AlertSU" and names "DPS", the branded sender and agency.
    3. present: Branded "AlertSU" signature and "DPS" identify Stanford as the sender.
    4. present: The branded signature "AlertSU" and "DPS" identify Stanford as sender.
    5. present: Opens with branded signature "AlertSU" and names "DPS", identifying the sender and agency.
    6. present: It opens with "AlertSU" and names "DPS", identifying the sender and responding authority.
    7. present: The branded "AlertSU" signature and "DPS" identify the Stanford sender and responders.
    8. present: Opens with the branded signature "AlertSU" and names "DPS" and "Palo Alto dispatch".
    9. present: Branded "AlertSU" and names "DPS" and "Palo Alto dispatch".
    10. present: It opens with the branded "AlertSU" signature and names "DPS" and "Palo Alto dispatch".
    11. present: The branded signature "AlertSU" and "DPS" identify the sender and authority.
    12. present: Branded signature "AlertSU" and "DPS" identify the sender.
    13. present: Opens with branded tag "AlertSU" and names "DPS", identifying the sender.
    14. present: The branded "AlertSU" and "DPS" identify the sender and responding authority.
    15. present: The branded "AlertSU" plus "DPS" identifies the sender.
    16. present: Opens with branded "AlertSU" and names "DPS" and "Stanford community".
    17. present: The "AlertSU" signature and "DPS" identify Stanford as sender.
    18. present: It opens with "AlertSU" and names "DPS", identifying the sender.
    19. present: It opens with the branded signature "AlertSU" and names DPS.
    20. present: It opens with the branded signature "AlertSU" and names "DPS", identifying the sender.
    21. present: Opens with branded "AlertSU" and names "DPS" and "Palo Alto dispatch".
    22. present: Opens with branded signature "AlertSU" and names "DPS".
    23. present: The branded "AlertSU" tag and "DPS" identify the sender and authority.
    24. present: The branded "AlertSU" tag and "DPS" identify the sender and authority.
    25. present: The branded "AlertSU" signature and "DPS" identify the Stanford sender.
  • Hazardpresent25/25

    Final assessment

    Unanimous that the hazard is present; the text states a caller intended to commit a shooting, a specific threat.

    What the threat actually is. A complete warning names the specific danger, such as a shooter, a fire, a tornado, or a gas leak, rather than a vague emergency, because people decide what to do based on what they are facing.

    See all 25 individual reads
    1. present: States a caller "intended to commit a shooting", a specific threat.
    2. present: It names a caller who "intended to commit a shooting", a specific threat.
    3. present: States a caller "intended to commit a shooting", a specific threat.
    4. present: It names a caller who "intended to commit a shooting", a specific threat.
    5. present: States a caller "intended to commit a shooting", a specific threat.
    6. present: It names a caller who "intended to commit a shooting", a specific threat.
    7. present: It says a caller "intended to commit a shooting", a specific threat.
    8. present: States a caller "intended to commit a shooting", a specific threat.
    9. present: States a caller "intended to commit a shooting", a specific threat.
    10. present: It names a caller who "intended to commit a shooting", a specific threat.
    11. present: It states a caller "intended to commit a shooting", a specific threat.
    12. present: Names a caller who "intended to commit a shooting", a specific threat.
    13. present: States a caller "intended to commit a shooting", a specific threat.
    14. present: It states a caller "intended to commit a shooting", a specific threat hazard.
    15. present: It cites a caller who "intended to commit a shooting", a specific threat.
    16. present: Names a caller who "intended to commit a shooting", a specific threat.
    17. present: It says a caller "intended to commit a shooting", a specific threat.
    18. present: It names a caller who "intended to commit a shooting", a specific threat.
    19. present: It reports a caller who "intended to commit a shooting", a specific threat.
    20. present: It states a caller "intended to commit a shooting", a specific named threat.
    21. present: States a caller "intended to commit a shooting", a specific threat.
    22. present: Names a caller who "intended to commit a shooting", a specific threat.
    23. present: It names a caller who "intended to commit a shooting", a specific threat.
    24. present: It names a caller who "intended to commit a shooting", a specific threat.
    25. present: It names a caller who "intended to commit a shooting", a specific threat.
  • Locationpresent25/25

    Final assessment

    All reads agree a location is given, citing the entrance to campus.

    Where the threat is. Saying whether danger is in a specific building, a part of campus, or area-wide lets people judge their own proximity and choose a safe direction. Without a where, a warning is hard to act on precisely.

    See all 25 individual reads
    1. present: Says he was "at the entrance to campus".
    2. present: It says "at the entrance to campus", a location reference.
    3. present: Specifies "the entrance to campus", a location.
    4. present: It cites "the entrance to campus", a specific place.
    5. present: Says "at the entrance to campus", referencing campus.
    6. present: It says "the entrance to campus", a specific place.
    7. present: It cites "the entrance to campus" and "the area", location references.
    8. present: Says "at the entrance to campus" and "to the area", a location cue.
    9. present: Locates it "at the entrance to campus".
    10. present: It says "the entrance to campus", a location reference.
    11. present: It says "at the entrance to campus".
    12. present: Locates it "at the entrance to campus".
    13. present: Says "at the entrance to campus", a location reference.
    14. present: It locates it at "the entrance to campus".
    15. present: It says the caller was "at the entrance to campus", a location.
    16. present: Says the caller was "at the entrance to campus", a location reference.
    17. present: It says the caller was "at the entrance to campus", a named place.
    18. present: It locates the caller "at the entrance to campus".
    19. present: It locates it "at the entrance to campus".
    20. present: It says he was "at the entrance to campus", a campus location.
    21. present: Says "at the entrance to campus", a location cue.
    22. present: Specifies "the entrance to campus" and "the area".
    23. present: It locates it at "the entrance to campus".
    24. present: It says "at the entrance to campus", a location reference.
    25. present: It locates it "at the entrance to campus".
  • Guidancepresent25/25

    Final assessment

    Unanimous that guidance is present; recipients are told to call 911 if they see anything suspicious.

    The protective action to take. A clear, specific instruction, such as shelter in place, evacuate, avoid the area, or run-hide-fight, drives faster and more correct protective behavior than describing the threat alone.

    See all 25 individual reads
    1. present: Instructs "Call 911 if you see anything suspicious".
    2. present: It instructs recipients to "Call 911 if you see anything suspicious".
    3. present: Instructs recipients to "Call 911 if you see anything suspicious".
    4. present: It instructs "Call 911 if you see anything suspicious", a protective action.
    5. present: Instructs recipients to "Call 911 if you see anything suspicious".
    6. present: It instructs "Call 911 if you see anything suspicious".
    7. present: It instructs "Call 911 if you see anything suspicious", a protective action.
    8. present: Instructs "Call 911 if you see anything suspicious", a protective action.
    9. present: Instructs "Call 911 if you see anything suspicious".
    10. present: It instructs "Call 911 if you see anything suspicious".
    11. present: It tells recipients to "Call 911 if you see anything suspicious".
    12. present: Instructs recipients: "Call 911 if you see anything suspicious".
    13. present: Instructs "Call 911 if you see anything suspicious", a protective action.
    14. present: It instructs recipients to "Call 911 if you see anything suspicious".
    15. present: It instructs recipients to "Call 911 if you see anything suspicious", a protective action.
    16. present: Instructs "Call 911 if you see anything suspicious".
    17. present: It instructs "Call 911 if you see anything suspicious".
    18. present: It instructs recipients to "Call 911 if you see anything suspicious".
    19. present: It instructs recipients to "Call 911 if you see anything suspicious".
    20. present: It instructs "Call 911 if you see anything suspicious", a protective action.
    21. present: Instructs recipients to "Call 911 if you see anything suspicious".
    22. present: Instructs "Call 911 if you see anything suspicious".
    23. present: It instructs "Call 911 if you see anything suspicious".
    24. present: It instructs recipients to "Call 911 if you see anything suspicious".
    25. present: It instructs recipients to "Call 911 if you see anything suspicious".
  • Timepresent25/25

    Final assessment

    All 25 reads agree timing is present, with an explicit date and clock time of 02/16/2024 at 12:40pm.

    When the message applies. A timestamp, the word now or immediately, or a phrase like until further notice tells the reader whether the danger is current and how quickly to act.

    See all 25 individual reads
    1. present: Gives "On 02/16/2024 at 12:40pm".
    2. present: It gives "On 02/16/2024 at 12:40pm", a clock time and date.
    3. present: Gives "On 02/16/2024 at 12:40pm", a date and clock time.
    4. present: It states "On 02/16/2024 at 12:40pm".
    5. present: Gives "On 02/16/2024 at 12:40pm".
    6. present: It gives "On 02/16/2024 at 12:40pm".
    7. present: It gives "On 02/16/2024 at 12:40pm", a clock time and date.
    8. present: Gives "On 02/16/2024 at 12:40pm", a clock time and date.
    9. present: Gives "On 02/16/2024 at 12:40pm".
    10. present: It gives "On 02/16/2024 at 12:40pm", a clock time and date.
    11. present: It gives "02/16/2024 at 12:40pm".
    12. present: Gives "On 02/16/2024 at 12:40pm".
    13. present: Gives "On 02/16/2024 at 12:40pm".
    14. present: It provides "02/16/2024 at 12:40pm".
    15. present: It states "On 02/16/2024 at 12:40pm", a clock time and date.
    16. present: Gives "On 02/16/2024 at 12:40pm".
    17. present: It gives "On 02/16/2024 at 12:40pm", a specific date and time.
    18. present: It gives the date and time "On 02/16/2024 at 12:40pm".
    19. present: It gives "On 02/16/2024 at 12:40pm".
    20. present: It states "On 02/16/2024 at 12:40pm", a clock time and date.
    21. present: Gives "On 02/16/2024 at 12:40pm", a date and clock time.
    22. present: Gives "On 02/16/2024 at 12:40pm".
    23. present: It cites "On 02/16/2024 at 12:40pm".
    24. present: It gives "On 02/16/2024 at 12:40pm".
    25. present: It gives "On 02/16/2024 at 12:40pm".
  • Impactpresent25/25

    Final assessment

    Present by unanimous agreement; the caller's stated intent to commit a shooting on campus conveys an explicit potential lethal danger to people.

    What the hazard could do to the people in its path. Beyond naming the threat, a complete warning conveys its potential consequences or severity, such as that a tornado can level buildings or that a leak could be explosive, so recipients grasp how much danger they are in. Research on warning message content finds that a concrete impact statement helps people personalize their risk and act sooner.

    See all 25 individual reads
    1. present: States a caller intended to commit a shooting at campus, a strongly implied lethal threat to people.
    2. present: It states a caller intended to commit a shooting at the campus entrance, an explicit stated threat of lethal violence.
    3. present: It reports a caller stated he intended to commit a shooting at the campus entrance, conveying a clear threat of violent harm.
    4. present: It reports a caller stated he intended to commit a shooting at the campus entrance, with the stated intent to shoot conveying clear danger.
    5. present: States a caller intended to commit a shooting at the campus entrance, conveying a deadly threat to people.
    6. present: States a caller intended to commit a shooting on campus, conveying an explicit threat of deadly harm.
    7. present: Describes a caller who stated he intended to commit a shooting on campus, conveying an explicit violent threat.
    8. present: It reports a caller stating he intended to commit a shooting at the campus entrance, conveying a stated intent to cause harm.
    9. present: Reports a caller stated he intended to commit a shooting at the campus entrance, conveying a stated threat of deadly harm.
    10. present: It reports a caller stating he intended to commit a shooting at the campus entrance, conveying a clear stated threat of violence.
    11. present: Reports a caller stated he intended to commit a shooting on campus, a stated intent to cause violent harm.
    12. present: It reports a caller stating he intended to commit a shooting on campus, conveying a stated danger of a planned attack.
    13. present: States a caller intended to commit a shooting on campus, a clearly stated threat of lethal harm.
    14. present: It reports a caller stated he intended to commit a shooting on campus, an explicit threat of lethal harm.
    15. present: The text reports a caller intending to commit a shooting on campus, conveying a stated violent threat to people.
    16. present: States a caller said he intended to commit a shooting at the campus entrance, with the stated intent to shoot conveying potential lethal danger.
    17. present: It reports a caller stated he intended to commit a shooting on campus, an explicit threat of violent harm.
    18. present: States a caller stated he intended to commit a shooting on campus, conveying a stated threat of harm to people.
    19. present: States a caller said he intended to commit a shooting on campus, and the stated intent to shoot conveys a clear danger of harm.
    20. present: States a caller said he intended to commit a shooting at the campus entrance, conveying an explicit stated intent to cause harm.
    21. present: Reports a caller stated he intended to commit a shooting on campus, an explicit threat of deadly violence conveying danger.
    22. present: Reports a caller stated he intended to commit a shooting on campus, a clearly stated threat of violence implying danger to life.
    23. present: It reports a caller stating he was at campus and intended to commit a shooting, conveying a stated threat of deadly violence.
    24. present: States a caller said he intended to commit a shooting at campus entrance, a stated intended violent harm being evaluated.
    25. present: It reports a caller stated he intended to commit a shooting on campus, a clearly stated threat of deadly harm.

Systematic AI judgments with visible reasoning, not human-validated codings.

About this analysis
Context

Background

On February 16, 2024, at 12:40 p.m. PST, an unidentified person called the Palo Alto Police Department and stated he was at the entrance to the Stanford campus and intended to commit a shooting. The Stanford Department of Public Safety responded immediately and spent several hours searching the campus. An AlertSU notification was sent at 1:25 p.m. PST "out of an abundance of caution," but community members were notably not instructed to shelter in place. Several events and classes were canceled during the response. Aerial news coverage from NBC Bay Area showed no visible police activity on campus by 2:30 p.m. PST, and by 3:14 p.m. PST police confirmed there was no credible threat. The decision not to issue a shelter-in-place order was notable and may reflect the assessment that the call to a non-emergency line, rather than 911, reduced its credibility. The incident occurred during a period of heightened concern about campus safety nationwide.
Analysis

Key Findings

The 45-minute delay between the call (12:40 p.m. PST) and the alert (1:25 p.m. PST) was used for threat assessment rather than immediate notification, a deliberate choice
The absence of a shelter-in-place directive is significant; Stanford chose to inform rather than restrict, suggesting confidence the threat was not credible
The caller used the non-emergency line rather than 911; police ultimately assessed the threat as not credible
The incident disrupted classes and events for several hours despite the relatively low-credibility assessment
Outcome
No suspect, weapon, or evidence of a credible threat was found after a multi-hour police investigation. The threat was deemed not credible.
Provenance

Sources

Every claim on this page is meant to be checkable. Open the links below—and the Verify this quote control under each confirmed alert—to read the original university, news, or archive page yourself. Hostnames are shown so you can see where you are going; archived copies survive when live pages move or disappear. See also our methodology.

  1. Student Paper
    Shooting threat reported at Stanford - Stanford Daily
    stanforddaily.com
    archived copy
  2. News
    Stanford: No confirmed credibility to shooting threat reported on campus - Palo Alto Online
    paloaltoonline.com
    archived copy
  3. News
    Police investigating shooting threat at Stanford campus - NBC Bay Area
    nbcbayarea.com
    archived copy
  4. Official
    AlertSU notification - Stanford Department of Public Safety
    police.stanford.edu
    archived copy
Cite this case

Campus Alert Archive. "Stanford University: Phoned-in shooting threat at the campus entrance deemed not credible after search." Incident of February 16, 2024. Added May 2026; last updated June 2026. https://campusalertarchive.com/case/stanford-university-shooting-threat-2024-02-16/

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Alert text quoted on this page remains the work of the issuing institution; the archive is a secondary source.

Tags
threat-of-violenceshooting-threatunfoundedelite-privatecaliforniano-shelter-in-placephone-threatUnfounded
Added May 2026Updated June 2026Via ingestion