How long is a lightning delay?

A minimum of 30 minutes, counted from the most recent lightning strike detected inside the venue's suspension radius (typically 8 miles). Every new strike inside the radius resets the clock, so real delays often run 45 to 90 minutes and there is no fixed maximum.

What is the 30-minute lightning rule?

Play may resume only after 30 consecutive minutes with no lightning detected inside the exclusion radius. It is the standard across NFHS and NCAA sport, golf, professional leagues and major events, and it appears in NWS, CISA and NATA guidance.

Why is the suspension radius 8 miles?

Lightning routinely strikes 6 to 10 miles from the parent storm, beyond the rain and sometimes from apparently clear sky. An 8-mile radius means play stops before the storm's reach extends over the venue, not after.

Who decides when play stops for lightning?

A designated decision-maker named in the venue's lightning policy: match officials in professional sport, a designated weather watcher under NFHS and NCAA guidance, the committee in golf, or event control at festivals and stadium events. The best-run venues remove judgement from the moment by tying the decision to detection data.

Can a match or round be abandoned because of lightning?

Yes. There is usually no automatic cut-off; officials weigh conditions, scheduling and safety. If strikes keep resetting the 30-minute clock, delays can stretch for hours before abandonment is considered.

Do stadiums with roofs still have lightning delays?

Play inside a fully roofed stadium normally continues, but operators still track nearby lightning for concourses, queues, fan zones, parking and staff working outside.

What do venues use to detect lightning?

Four tiers are in use: free consumer apps (no alerting duty of care), on-site prediction hardware sirens ($10,000 to $50,000 installed), professional detection network subscriptions, and software-only alerting services such as StrikeWatch that monitor a venue's exact coordinates on the Vaisala global lightning network and text the whole staff automatically.

How far away can lightning strike from a storm?

Cloud-to-ground strikes commonly land 6 to 10 miles from the storm core, and strikes beyond 10 miles are documented. That is why guidance uses detection radii rather than waiting for rain or overhead thunder.

The reference on lightning suspensions in sport

Lightning delay rules, sport by sport.

A lightning delay is the suspension of outdoor play when a cloud-to-ground strike is detected within a defined radius of the venue, most commonly 8 miles. Play resumes only after 30 consecutive minutes with no strike inside that radius; every new strike resets the clock. There is no maximum delay.

Published by StrikeWatch, the lightning intelligence service that monitored all sixteen stadiums of the 2026 FIFA World Cup in real time. Last updated 25 August 2026.

8 miles

The suspension radius. A cloud-to-ground strike inside it stops play immediately, because the next strike could be at the venue.

30 minutes

The all-clear clock, counted from the most recent strike inside the radius. Each new strike resets it to zero.

The rules by sport

The physics is identical everywhere; the paperwork differs. This is what each code actually specifies.

Sport	What the rules say
Golf	The R&A's Committee Procedures (Section 6) make the committee responsible for judging lightning danger and recommend a siren to suspend play; the USGA operates the same way at its championships. Neither fixes a radius, so well-run clubs adopt the 8-mile / 30-minute standard in their own written policy. Players may also stop on their own initiative if they believe lightning threatens them (Rule 5.7a).
High school (NFHS)	Suspend at the first observed lightning or thunder; wait 30 minutes from the last event before resuming. A designated weather watcher is recommended for every contest.
College (NCAA)	Guidance mirrors NFHS: monitoring by radius, suspension when strikes near the venue, 30-minute reset clock, and a named decision-maker in the emergency action plan.
Soccer	Referees suspend play for safety; at the 2026 World Cup the operational standard applied across venues was an 8-mile suspension radius with a 30-minute all-clear, and U.S. Soccer's Recognize to Recover guidance follows the same logic for the grassroots game.
American football (NFL)	Stadium severe-weather plans and league game-operations procedures use detection-based suspension with the 30-minute restart clock; crowds are moved to protected concourses during the delay.
Baseball	MLB leaves suspension to the umpire crew chief and home club's emergency plan; Little League publishes a formal policy (Appendix A) built on the 30-minute rule.
Tennis, athletics, cricket	Comparable event-level protocols: detection radius, immediate suspension, 30-minute reset.
Festivals & outdoor events	The U.S. federal government published its first Lightning Safety Guide for Sports and Special Events in May 2026 (CISA with the National Security Council): monitor professionally, define trigger distances in advance, name the decision-maker, and document the record.

What a real tournament's lightning summer looks like

During the 2026 World Cup, StrikeWatch monitored every host stadium continuously on the Vaisala global lightning detection network. The numbers from one six-week tournament window:

3,069

cloud-to-ground strikes logged inside the monitoring radii of the 16 host stadiums

315

safety status changes called across the tournament as strikes crossed alert thresholds

325 hrs

of lightning warnings at Hard Rock Stadium, Miami, in a single year: the most lightning-affected U.S. stadium (Vaisala Annual Lightning Report 2025)

The backdrop: U.S. lightning activity rose about 20% in 2025 to 251.8 million events, an eight-year high (Vaisala Annual Lightning Report 2025). Delays are not getting rarer.

Why the radius, not the rain

Cloud-to-ground lightning routinely strikes 6 to 10 miles from the parent storm, ahead of the rain and occasionally from sky that looks clear overhead. Waiting for overhead thunder means the venue is already inside strike range. Detection-based radii exist so the decision happens before the storm's reach arrives, and the 30-minute clock exists because trailing strikes kill: a large share of casualties happen after the rain has passed, when people return outside too early.

Who makes the call, and how the best venues make it

Every credible guidance document (NWS, CISA, NFHS, NATA) agrees on the same skeleton: a written policy, defined trigger distances, one named decision-maker, a reliable detection source, a way to notify everyone at once, and a record of what was done. The difference between venues is not the rule; it is whether the rule runs on someone glancing at a free app, or on professional detection that alerts the whole staff simultaneously and timestamps every decision. Industry guidance for events is blunt on this point: for higher-risk gatherings, relying on free consumer apps may not constitute reasonable precaution.

For venue operators

The delay is coming either way. The record is optional.

StrikeWatch gives golf courses and outdoor venues tournament-grade lightning intelligence with no hardware: your exact coordinates monitored continuously on the Vaisala network, automatic SMS and email to your whole team at 20, 10 and 8 miles, the 30-minute all-clear clock, and a timestamped log of every alert; your documented record of diligence. $249 per venue per month, no setup fees, first invoice after your monitoring is live.

See StrikeWatch for Business

Common questions

How long is a lightning delay?: At least 30 minutes from the most recent strike inside the suspension radius. Because every new strike resets the clock, typical real-world delays run 45 to 90 minutes, and multi-hour delays happen every season. There is no maximum.
What is the 30-minute lightning rule?: Play resumes only after 30 consecutive strike-free minutes inside the radius. It is the standard across NFHS and NCAA sport, golf, professional leagues and major events, and appears in NWS, CISA and NATA guidance.
Why 8 miles?: Because lightning routinely strikes 6 to 10 miles from the storm core. An 8-mile trigger stops play before the venue is inside strike range rather than after.
Who decides when play stops?: Whoever the venue's lightning policy names: match officials, a designated weather watcher, the golf committee, or event control. Good policies tie the decision to detection data so nobody has to guess.
Can play be abandoned entirely?: Yes, at the officials' discretion once delays become impractical. Nothing forces abandonment automatically.
Do roofed stadiums have lightning delays?: Play usually continues under a full roof, but operators still track nearby strikes for everything outside the bowl: queues, concourses, fan zones, car parks, staff.
What do venues use to detect lightning?: Free consumer apps (no alerting, no record), on-site prediction hardware at $10,000 to $50,000 installed, professional detection subscriptions, or software-only alerting such as StrikeWatch on the Vaisala network.
Is there official guidance to build a policy on?: Yes: the NWS Lightning Safety Toolkits, the CISA/NSC Lightning Safety Guide for Sports and Special Events (May 2026), NFHS guidelines, and the NATA position statement. Sources below.

Sources and further reading

CISA & National Security Council, Lightning Safety Guide for Sports and Special Events (May 2026) · National Weather Service, Lightning Safety for Sports and outdoor-venue toolkits · NFHS, guidelines on handling contests during lightning disturbances · NATA, position statement on lightning safety for athletics and recreation · The R&A, Committee Procedures, Section 6 · U.S. Soccer, Recognize to Recover: lightning and severe weather · Vaisala, Annual Lightning Report 2025 · Little League, Appendix A: lightning policy.