LI Flash Flood Emergency: Severe Storms Strike NOW
Severe Weather Hits Long Island: What You Need to Know Right Now
IMPORTANT SAFETY ALERT
Multiple dangerous weather warnings are active across Long Island as of Thursday evening. Please take these seriously and stay indoors if possible.
What’s Happening Right Now?
Long Island is experiencing a significant severe weather event with multiple warnings happening at the same time. Think of it like the atmosphere throwing a temper tantrum—heavy rain, potential tornadoes, and flooding all at once.
Here’s the breakdown of what’s active:
Tornado Warning (Southern Nassau County)
- Active until: 7:15 PM
- Where: Southern Nassau County (Atlantic Beach, Long Beach areas)
- Moving: Northeast direction
- Dangers: Winds strong enough to knock down trees, damage homes and vehicles, and create dangerous flying debris
Flash Flood Warning (Nassau County)
- Active until: 8:15 PM
- What it means: Flooding is happening right now or will happen very soon
- Rain so far: Over 1 inch already recorded
- More coming: Up to 1.5 additional inches expected
- Who’s at risk: Drivers, pedestrians, anyone in low-lying areas
Flood Watch (Nassau & Suffolk Counties)
- What it means: Conditions are right for flooding—stay alert
- Difference from warning: A watch means "be ready," a warning means "take action now"
Major Airport Delays
- JFK & LaGuardia: Departures delayed 1 hour 45 minutes
- Arrivals: Held at origin airports ~1 hour 40 minutes
- Airborne flights: ~15 minute delays
- Cause: Thunderstorms in the area
Understanding the Alerts (ELI5 Style)
| Alert Type | What It Means | What You Should Do |
|---|---|---|
| Tornado Warning | A tornado has been spotted OR radar shows rotation | Take shelter immediately—interior room, lowest floor, away from windows |
| Flash Flood Warning | Flooding is happening/imminent | Don’t drive through water—turn around, don’t drown; move to higher ground |
| Flood Watch | Flooding is possible | Stay informed, prepare to act if upgraded to warning |
| Flood Advisory | Minor flooding occurring/expected | Use caution, avoid flooded roads |
Rainfall Expectations: Who Gets What?
The National Weather Service meteorologist Joe Pollina breaks down the expected totals:
- Western Nassau: ~2.5 inches (highest amounts)
- Central/Eastern Nassau: 1.5–2 inches
- Suffolk County (West to East): Decreasing amounts
- East End: Just under 1 inch
- Local spots: Up to 3 inches possible (isolated heavier bands)
PRO TIP: "An inch of rain" doesn’t sound like much, but on paved surfaces with storm drains, it can create dangerous flash flooding in minutes.
Step-by-Step: What To Do Right Now
- Check your location — Are you in the warned areas? (Southern Nassau for tornado, all Nassau for flash flood)
- Get indoors — If you’re outside, seek sturdy shelter immediately
- Avoid travel — Roads may flood rapidly; 6 inches of moving water can knock you down, 12 inches can float a car
- Monitor updates — Keep phone alerts ON; follow @NWSNewYorkNY on X/Twitter
- Prepare for power outages — Charge devices, have flashlights ready (not candles—fire risk)
- Check on neighbors — Especially elderly or those with mobility issues
- Stay put until warnings expire — 7:15 PM (tornado), 8:15 PM (flash flood) at earliest
Flight Travel: What to Expect
If you’re flying tonight or picking someone up:
- Check your airline app/website before heading to the airport
- Expect significant delays — 1.5 to 2+ hours is the current norm
- Arriving flights are being held at their departure cities
- Pro tip: Airlines often waive change fees during weather events—call to rebook if possible
Summary
Long Island is under a multi-threat weather event Thursday evening:
- Tornado warning for southern Nassau until 7:15 PM
- Flash flood warning for all Nassau until 8:15 PM (1+ inches fallen, 1.5+ more coming)
- Flood watch for Suffolk County
- Major delays at JFK and LaGuardia (90+ minutes)
Bottom line: This is a take-action-now situation. Stay inside, avoid roads, keep alerts on, and don’t become a statistic. The storms will pass—but safety comes first.
FAQ: Your Questions Answered
What’s the difference between a watch and a warning?
Watch = "Conditions are favorable, stay alert." Warning = "It’s happening NOW or imminent, TAKE ACTION." Think: Watch = "Grab your umbrella." Warning = "Get in the basement."
Can I drive through water if it doesn’t look deep?
NO. It takes only 6 inches of moving water to knock an adult down, 12 inches to float a small car, 18–24 inches for SUVs/trucks. You can’t see road damage underneath. Turn around, don’t drown.
Where’s the safest place in my house during a tornado warning?
Lowest floor, most interior room, away from windows. Basement > interior bathroom/closet > hallway. Put as many walls between you and outside as possible. Cover head/neck.
How long will the flight delays last?
As long as thunderstorms are near the airports. The FAA won’t let planes take off/land in lightning. Check your airline for real-time updates—delays often cascade throughout the evening.
My area isn’t in the warning—am I safe?
"Safe" is relative. Flood watch means flooding could develop. Storms can train (move over same areas repeatedly). Stay alert, have a plan, and don’t let your guard down just because you’re not in the polygon.
Stay safe, Long Island. This too shall pass—but only if we respect the weather.