Urgent: Severe Storms Threaten Philly – Live Updates Now
Severe Weather Alert: What You Need to Know for Thursday, August 20, 2026
Hey there! If you’re in the Philadelphia area, Mother Nature has a busy day planned for Thursday. Let’s break down what’s happening, what it means for you, and how to stay safe — all in plain English.
What’s Happening Right Now?
The National Weather Service has issued multiple alerts for our region. Think of these like yellow and red warning lights on your car dashboard — they mean "pay attention" and "take action."
Current Alerts at a Glance
| Alert Type | Areas Affected | Until When | What It Means |
|---|---|---|---|
| FIRST ALERT (Heavy Rain, Severe Storms, Tornadoes) | Philadelphia region | 9:00 PM Thursday | Dangerous weather is happening now or very soon |
| Tornado Watch | Parts of DE, NJ, PA, VA | 10:00 PM Thursday | Conditions are right for tornadoes to form — stay ready |
The Main Threats (In Simple Terms)
[!IMPORTANT]
Three big dangers are coming together at once:
- Flash Flooding → Lots of rain + short time = roads turning into rivers
- Damaging Winds → Gusts strong enough to knock down trees and power lines
- Isolated Tornadoes → Spinning storms that can pop up quickly with little warning
Why This Is Extra Tricky
- Timing is terrible → The worst weather hits during the afternoon and evening commute (roughly 3–7 PM)
- Multiple rounds → It’s not just one storm. Waves of storms keep coming through
- Darkness coming → By evening rush, it’ll be getting dark, making it harder to see flooding or debris
Your Safety Checklist: 5 Steps to Take Right Now
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Download the NBC10 App → Get real-time alerts pushed to your phone
Download here -
Follow the NBC10 First Alert Weather Team → They’ll explain what’s happening as it happens
Follow them here -
Plan Your Commute Early → If you can leave work/school before 3 PM, do it. If not, have a backup route.
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Charge Everything → Phones, laptops, portable chargers — power outages are likely.
- Know Your Safe Spot → Basement or interior room on the lowest floor (no windows). Practice getting there with kids/pets.
If You’re Caught on the Road
| Situation | What to Do |
|---|---|
| Flash flood warning | TURN AROUND, DON’T DROWN — 6 inches of moving water knocks you down; 1 foot floats a car |
| Tornado warning while driving | Get to a sturdy building immediately. No building? Lie flat in a ditch, cover your head. |
| Downed power lines | Stay in your car. Call 911. Do NOT touch the line or anything touching it. |
Quick Summary
- FIRST ALERT active until 9 PM — severe storms, heavy rain, possible tornadoes
- Tornado Watch until 10 PM — DE, NJ, PA, VA — conditions favor tornado formation
- Flash flooding is the #1 threat — especially during evening commute
- Stay connected — NBC10 app + weather team = your best info sources
- Best protection — be indoors, in a safe room, before storms arrive
FAQ: Your Questions Answered
Q: What’s the difference between a "Watch" and a "Warning"?
A: Great question!
- Watch = "Be ready." Ingredients for danger are there (like having all the stuff to bake a cake).
- Warning = "Take cover NOW." The danger is happening or imminent (the cake is in the oven and burning).
Q: Can I still drive if it’s "just rain"?
A: If there’s a Flash Flood Warning — NO. It’s never "just rain" when that’s issued. Roads can wash away underneath water that looks shallow. Wait it out.
Q: What if I live in an apartment on the 2nd floor?
A: You’re safer from flooding up there, but not from wind or tornadoes. Go to a hallway, bathroom, or closet on the lowest floor without windows. Bring a helmet (bike helmet works!) and shoes.
Q: How will I know if a tornado is coming?
A: Listen for:
- A loud, continuous roar (like a freight train)
- Sudden calm after heavy rain/hail
- Debris falling from the sky
- Best bet: Your phone alert + NBC10 app will tell you before you see/hear it.
Q: When will this be over?
A: The highest risk ends around 9–10 PM Thursday, but leftover flooding and power outages may last into Friday. Keep checking updates before heading out Friday morning.
Final Thought
You’ve got this. Severe weather is scary, but preparation turns panic into a plan. You’ve read this — now act on it. Charge your phone. Talk to your family. Download the app. And remember: stuff can be replaced. You can’t.
Stay safe, Philly!