Severe Thunderstorm Warning: 60 MPH Winds and Hail Hit NYC and Long Island — Expect Flooding After a Week of Sinkholes

NWS issues severe thunderstorm warning for Brooklyn, Manhattan, Staten Island with 60 mph winds and hail. Long Island under threat as storms push east. Flash...

Updated May 20, 2026
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Severe Thunderstorm Warning: 60 MPH Winds and Hail Hit NYC and Long Island — Expect Flooding After a Week of Sinkholes

⚠️ ACTIVE WEATHER ALERT — May 20, 2026. The National Weather Service has issued a Severe Thunderstorm Warning for Brooklyn, Manhattan, and Staten Island until 7:00 PM EDT. 60 mph winds and penny-sized hail expected. Storms are pushing eastward toward Queens, Nassau County, and Suffolk County.


Current Warning

NWS Severe Thunderstorm Warning radar

NYCEM — Notify NYC issued the alert at approximately 6:28 PM EDT:

@NWSNewYork Severe Thunderstorm Warning for Brooklyn, Manhattan, Staten Island: Until 7:00 PM on 5/20. 60mph winds & penny-sized hail expected.

What to Expect

  • Wind gusts up to 60 mph — strong enough to down tree limbs, blow unsecured objects, and create dangerous driving conditions on exposed highways
  • Penny-sized hail — minor vehicle damage possible; pedestrians should seek shelter
  • Heavy rainfall — localized flash flooding likely, particularly in low-lying areas and near storm drains
  • Lightning — frequent cloud-to-ground strikes expected with this cell

Long Island Impact

As of 8:15 PM, the storm cell is moving eastward from NYC into western Nassau County. Long Island commuters should expect:

  • Road flooding on low-lying routes including Hempstead Turnpike, Sunrise Highway (western sections), Merrick Road, and underpasses throughout Nassau County
  • Power outages — PSEG Long Island typically sees scattered outages with 60+ mph wind events. Check PSEG Long Island outage map
  • LIRR disruptions — Severe weather can trigger speed restrictions and service suspensions on exposed track sections. Check MTA LIRR alerts
  • LaGuardia additional delays — The airport is already operating on one runway due to today’s sinkhole. Thunderstorms compound the problem — the FAA had already implemented a traffic management program causing 1h 37m average delays before the storms arrived

The Sinkhole Connection

This storm arrives at the worst possible time for New York’s infrastructure.

As our data analysis published earlier today detailed, the region has experienced four sinkholes in seven days — a statistical anomaly driven in part by 2.8 inches of rainfall in the first half of May (140% of the historical average).

Tonight’s severe thunderstorm will dump additional rainfall onto ground that is already saturated and has demonstrated subsurface instability in multiple locations:

  • The LIE sinkhole in Melville (May 14) was caused by damage to a sewage project — additional water flow through that same corridor tonight increases the risk of further settlement
  • The LaGuardia runway sits on 1930s fill that is already compromised — additional rainfall will test whatever temporary repairs were made today
  • Any NYC street with an aging water main or sewer line underneath is at elevated risk when sudden heavy rainfall overwhelms already-stressed drainage systems

More rain on unstable ground = more sinkholes. Avoid driving over areas where you see standing water that wasn’t there before, unusual pavement depressions, or bubbling/flowing water near utility covers.


Safety Guidance

If You’re Driving on Long Island

  1. Reduce speed and increase following distance — hydroplaning risk is highest in the first 15 minutes of heavy rain when oil rises to the road surface
  2. Avoid flooded underpasses — turn around, don’t drown. Six inches of moving water can knock an adult off their feet; 12 inches can float a vehicle
  3. Pull over if visibility drops below 100 feet — turn on hazard lights and wait for the heaviest cell to pass
  4. Stay away from downed power lines — treat every downed line as live. Call 911 and PSEG Long Island at 1-800-490-0075

If You’re at Home

  • Bring in unsecured outdoor items — patio furniture, trash cans, and anything that can become a projectile in 60 mph gusts
  • Charge devices — power outages are likely
  • Stay away from windows during the strongest gusts
  • Monitor weather.gov/okx for updated warnings and watches

Timeline

Time (EDT)Event
6:28 PMNWS issues Severe Thunderstorm Warning for Brooklyn, Manhattan, Staten Island
~7:00 PMWarning expires for NYC; storms pushing into Queens and western Nassau
7:00–9:00 PMStorm cell expected to cross Nassau County into western Suffolk
OvernightResidual showers, diminishing winds
Thursday AMClearing skies; assess damage and flooding

Long Island Traffic will update this article as the storm progresses eastward.


Sources

Topics

severe thunderstormweather warningNYCLong IslandfloodingsinkholeNWShailwindNotifyNYCsevere thunderstorm warning Long IslandNYC severe weather today

Frequently Asked Questions

What should I do if I'm in a car accident on Long Island?

Call 911 immediately if anyone is injured or if the vehicles can't be moved safely off the roadway. Stay at the scene — leaving the scene of an accident with injuries is a crime under New York Vehicle and Traffic Law §600. Exchange license, registration, and insurance information with every other driver involved. Take photographs of every vehicle, the position of the vehicles before they're moved, all license plates, the road surface, traffic signs, and any visible injuries. Get the names and phone numbers of every witness — police often won't capture bystander witnesses on their own. Seek medical attention within 24 hours even if you feel fine; soft-tissue injuries and concussions can take a day or two to present, and a delayed medical visit weakens an injury claim. In Nassau County, NCPD responds outside of incorporated villages. In Suffolk County, SCPD covers the five western towns; East End towns have their own forces. New York State Police Troop L responds to accidents on state highways across both counties.

How long do I have to file a no-fault claim in New York?

Thirty days. New York Insurance Law §5102 requires you to file a Personal Injury Protection (PIP/no-fault) application with the insurer of the vehicle you were in (or, if you were a pedestrian or cyclist, with the insurer of the striking vehicle) within 30 days of the accident. Missing the 30-day deadline can void your no-fault benefits — that's up to $50,000 in medical bills and 80% of lost wages (capped at $2,000/month) per injured person. The form is the NF-2 application; your insurance carrier provides it on request. New York no-fault is a true PIP system: it pays regardless of who caused the crash.

What counts as a "serious injury" under New York law?

Under Insurance Law §5102(d), a "serious injury" is one that meets at least one of these categories: (1) death; (2) dismemberment; (3) significant disfigurement; (4) a fracture; (5) loss of a fetus; (6) permanent loss of use of a body organ, member, function, or system; (7) permanent consequential limitation of use of a body organ or member; (8) significant limitation of use of a body function or system; or (9) a medically determined injury that prevents the injured person from performing substantially all daily activities for at least 90 of the first 180 days following the accident. Only injuries that meet one of these nine categories create the right to sue the at-fault driver for pain and suffering damages — short of that threshold, recovery is limited to no-fault PIP benefits. Disputes over whether an injury meets the threshold are the single most-litigated issue in NY motor-vehicle cases.

How long do I have to sue after a Long Island car accident?

Three years from the date of the accident for personal injury claims under CPLR §214(5). Wrongful death claims have a two-year deadline under EPTL §5-4.1. If a government entity is involved (a county vehicle, a road defect on a state highway, a defective traffic signal, a county bus), you must file a Notice of Claim within 90 days under General Municipal Law §50-e — that's a non-negotiable jurisdictional deadline, and missing it usually bars the claim entirely. Property-damage-only claims have the same three-year clock. The clock starts on the day of the accident, not the day you discover the full extent of an injury.

Can I still recover compensation if I was partly at fault?

Yes. New York is a pure comparative negligence state under CPLR §1411. Even if you were 90% at fault, you can still recover 10% of your damages. (A pending 2026 budget proposal would change this to a 51% bar — meaning a plaintiff who is more than 50% at fault would recover nothing — but that hasn't passed.) Insurance carriers routinely try to inflate the injured driver's percentage of fault to reduce payouts. The percentage assignment is decided by the jury at trial (or negotiated during settlement); it isn't fixed by the police accident report and isn't binding even when the report assigns fault. Reporting practice and the actual legal apportionment are separate questions.

How do I get a copy of the police accident report?

If local police responded to the scene, the report is filed under an MV-104A form. In New York State, you can request a copy through the DMV at https://dmv.ny.gov/vehicle-safety/get-copy-accident-report (roughly $7 online, $10 by mail) once the responding agency has uploaded it to the state system, which usually takes 5-10 business days. NCPD and SCPD also have their own direct-request processes through the precinct that responded. If you weren't injured but the property damage exceeded $1,000, New York VTL §605 requires you (the driver) to file your own MV-104 report with the DMV within 10 days regardless of whether police responded.

Disclaimer: Incident information on this page is compiled from public sources including police reports, traffic agencies, and news outlets. It is provided for informational purposes only and may not reflect the most current status of this incident. Do not rely on this information for legal, insurance, or emergency decisions. For emergencies, call 911.