Philly Flood Threat: When & Where the Water Rises
Your Weekend Weather Guide: Rain, Storms, and a Beautiful Week Ahead!
Hey there! Let’s break down what Mother Nature has in store for the Philadelphia area over the next few days. Think of this as your cheat sheet for deciding whether you need an umbrella, sunscreen, or maybe both!
Friday Night: The Calm Before the Storm
- Sky: Clouds rolling in
- Temperature: Dropping to the upper 60s (that’s around 67°F–69°F)
- Vibe: Cool and cloudy. A perfect night for cozy blankets!
Saturday: The "Wet & Wild" Day — HEADS UP!
IMPORTANT ALERT: FLASH FLOOD RISK
There is a risk of flash flooding Saturday morning.
- When: Rain arrives early morning.
- How much: Most spots get ~½ inch, but some lucky (or unlucky!) spots could see 1 inch or more.
- Action: Never drive through flooded roads. "Turn Around, Don’t Drown!"
Saturday Timeline
- Early Morning: Steady, soaking rain begins. Highest flood risk.
- Afternoon: Rain tapers off to light, scattered showers.
- Late Day: Peeks of sunshine possible!
- High Temperature: Only the middle to upper 70s (feels cooler with the rain).
Sunday: The "Steamy & Stormy" Day
Sunday is a tale of two halves: muggy start, stormy finish.
- Morning: Humid and cloudy. You’ll feel the moisture in the air.
- Midday: Some sunny breaks likely.
- Afternoon/Evening: That sunshine heats things up and triggers thunderstorms.
- Severe Risk: A few storms could be strong to severe (damaging winds, hail).
- High Temperature: Low to middle 80s (feels warmer with humidity).
Next Week: The "Winner Winner Chicken Dinner" Stretch
Finally! A stretch of dry, seasonable, low-humidity weather to enjoy.
| Day | Sky | Humidity | High Temp | Verdict |
|---|---|---|---|---|
| Monday | Bright Sunshine | Low | ~80°F | Beautiful |
| Tuesday | Bright Sunshine | Low | ~80°F | Beautiful |
| Wednesday | Mostly Sunny | Low | Mid 80s | Fantastic |
Bottom line: Monday through Wednesday look gorgeous. Plan outdoor activities for these days!
Tornado Confirmations from Yesterday
The National Weather Service (NWS) surveyed damage from Thursday’s storms and confirmed two tornadoes touched down:
- Dover, Delaware: EF-1 Tornado (Winds 86–110 mph). More details coming Saturday.
- Downingtown, Pennsylvania: EF-0 Tornado (Winds 65–85 mph).
ELI5: What is the EF Scale?
The Enhanced Fujita (EF) Scale rates tornadoes based on the damage they cause (which estimates wind speed).
- EF-0: Minor damage (broken branches, peeled shingles).
- EF-1: Moderate damage (roofs stripped, mobile homes flipped, cars pushed).
- Scale goes up to EF-5 (incredible damage, well-built homes swept away).
Stay Updated On-The-Go
Weather changes fast! Keep the latest forecast in your pocket:
- Download the NBC10 App → Get it here
- Follow the NBC10 First Alert Weather Team → Follow here
Quick Summary Checklist
- Friday Night: Cloudy, Upper 60s.
- Saturday: AM Rain / Flood Risk → PM Showers/Sun → Highs 70s.
- Sunday: Humid Start → Sun Breaks → PM Storms (Severe Possible) → Highs 80s.
- Mon–Wed: BEST DAYS OF THE WEEK. Sunny, Low Humidity, Low 80s.
- Confirmed Tornadoes: EF-1 (Dover, DE) & EF-0 (Downingtown, PA).
Frequently Asked Questions (FAQ)
1. What exactly is "Flash Flooding"?
It’s flooding that happens very fast (usually within 6 hours of heavy rain). It can turn roads into rivers and sweep away cars. If you see water covering the road, DO NOT DRIVE THROUGH IT. You don’t know how deep it is or if the road is even still there.
2. What does "Strong to Severe" thunderstorm mean?
- Strong: Heavy rain, frequent lightning, gusty winds (40-58 mph), small hail.
- Severe: Damaging winds (58+ mph), Large hail (1 inch / quarter size or bigger), or a Tornado. Sunday afternoon/evening storms could reach severe levels.
3. Why is Saturday cooler than Sunday?
Saturday has thick clouds and rain all day acting like a "lid," keeping temps in the 70s. Sunday gets sunshine breaks before the storms. That sun heats the ground, warming the air into the 80s and adding fuel (energy) for the afternoon storms.
4. What does "Seasonable" mean for next week?
It means temperatures are normal for this time of year (usually low 80s for late August). Combined with low humidity, it will feel very comfortable—none of that sticky, tropical feeling!
5. Where can I see the tornado damage pictures/stats?
The article references a "Tornado Stats" graphic from the NBC10 weather team. For the latest survey results and photos, check the NBC10 App or the NBC10 Weather social media pages.
Stay safe this weekend, and enjoy that amazing start to next week!