Mưa bão giảm, “vùng mưa khủng” bất ngờ chuyển hướng Ninh Bình – Thanh Hóa – Nghệ An
Typhoon No. 4 Brings Heavy Rain and Strong Winds to Northern Vietnam
What Happened? A Simple Overview
Imagine a giant spinning storm sitting over the ocean. That’s Typhoon No. 4. Even though the center of the storm is out at sea, its massive "arms" (called circulation) reach far inland, dumping huge amounts of rain on Northern Vietnam and Thanh Hoa province.
Important Point: You don’t need to be under the eye of the storm to get hit hard. The outer rain bands can bring dangerous flooding hundreds of kilometers away!
Where Did the Rain Fall? (August 23–24, 2024)
In just 24 hours (7:00 AM Aug 23 → 7:00 AM Aug 24), these places got serious soaking:
| Location | Province | Rainfall (mm) |
|---|---|---|
| Yên Lập | Quảng Ninh | 253 mm |
| Cát Bà | Hải Phòng | 275 mm |
| Vạn Mai | Phú Thọ | 238 mm |
| Mường Men | Sơn La | 160 mm |
| Quân Chu | Thái Nguyên | 164 mm |
| Bình Gia | Lạng Sơn | 125 mm |
| Cổ Pháp | Bắc Ninh | 129 mm |
| Cổ Lũng | Thanh Hóa | 136 mm |
| Nà Tấu 2 | Điện Biên | 110 mm |
ELI5 Tip: 100mm of rain is about 4 inches — that’s a lot of water in one day! Think of it like leaving a garden hose running on full blast over a small patch of ground for hours.
Where Is the Typhoon Now?
- Time: 8:00 AM, August 24, 2024
- Location: Over the sea north of Bạch Long Vĩ Island (a special zone in the Gulf of Tonkin).
- Speed: Moving very slowly — only 3–5 km/h (walking speed!).
- Strength: Category 9 (Strong typhoon), gusting to Category 11.
Because it’s moving so slowly, the rain bands keep spinning over the same areas for a long time.
What’s the Rain Forecast? (Next 24–48 Hours)
Today (August 24)
- Northeast region, South of Phú Thọ, Thanh Hóa, Nghệ An: 20–40 mm (some spots >70 mm).
- Hưng Yên, Ninh Bình, Thanh Hóa, Nghệ An: 40–100 mm (some spots >200 mm ).
Tonight → Morning August 25
- Coastal & Delta areas (Northern Vietnam, Thanh Hóa, Nghệ An): 20–50 mm (some spots >100 mm).
Afternoon August 25
- Rain gradually decreases .
Where Is the Typhoon Going? (Track Forecast)
| Time | Location | Strength | Movement |
|---|---|---|---|
| 7:00 AM Aug 25 | East of Gulf of Tonkin, ~110 km East of Bạch Long Vĩ | Cat 9 / Gust 11 | Moving South-Southeast |
| 7:00 AM Aug 26 | ~245 km Northeast of Bạch Long Vĩ, heading toward Quảng Tây, China | Cat 8 / Gust 10 (Weakening) | Turns East-Northeast |
Key Takeaway: The storm is moving AWAY from Vietnam toward China, but its outer bands will still bring rain and wind for another day or so.
DANGER ZONE: The Sea Conditions
If you are on a boat, STAY IN PORT. Seriously.
| Area | Wind | Gusts | Waves | Risk |
|---|---|---|---|---|
| Bạch Long Vĩ, Vân Đồn, Cô Tô, Cát Hải, Hòn Dấu, Quảng Ninh coast, Hải Phòng coast | Level 6–7 | Level 8–9 (Near center: 10–11) | 3–5 meters (10–16 feet!) | Extreme Danger |
CALLOUT: Waves this high can capsize fishing boats, cargo ships, and tourist vessels. Do not go out!
The Big Picture: 3-Day Total Rainfall (Aug 21–24)
It hasn’t just been one day. The ground is already saturated.
- General Northern Region & Thanh Hóa: 100–200 mm.
- Lạng Sơn, Quảng Ninh, Bắc Ninh, Hải Phòng: 180–380 mm (Extreme!).
Top 3 Wettest Spots (3 Days):
- Hồng Hà (Quảng Ninh): 548 mm
- Mẫu Sơn (Lạng Sơn): 520 mm
- Cát Bà (Hải Phòng): 414 mm
ELI5: 500mm = half a meter (≈20 inches) of water. That’s up to your knees — everywhere.
What Should You Do? (Simple Steps)
- Stay Informed: Check official forecasts (NCHMF – National Center for Hydro-Meteorological Forecasting).
- Avoid Travel: Don’t drive through flooded roads. Turn around, don’t drown.
- Secure Loose Things: Tie down roofs, pots, signs — anything wind can grab.
- Stay Off the Water: No fishing, no ferries, no swimming.
- Prepare for Landslides: If you live near hills/mountains (especially Lạng Sơn, Quảng Ninh, Phú Thọ), be ready to evacuate if soil gets loose.
- Stock Basics: Water, food, flashlight, phone charged — just in case power goes out.
Summary
- Typhoon No. 4 is offshore but huge circulation brings torrential rain to Northern Vietnam.
- Record rainfall already recorded (500mm+ in 3 days in some spots).
- Flood & Landslide Risk: HIGH — especially Lạng Sơn, Quảng Ninh, Bắc Ninh, Hải Phòng, Phú Thọ, Thanh Hóa, Nghệ An.
- Storm moving SLOWLY away toward China, weakening after landfall there.
- Sea extremely dangerous — all vessels stay in port.
- Rain eases by afternoon Aug 25.
FAQ (Frequently Asked Questions)
1. Is the typhoon going to hit Hanoi directly?
No. The center stays at sea, moving toward China. But Hanoi gets heavy rain from the outer bands.
2. What does "Category 9" mean?
It’s a wind speed scale (Beaufort). Cat 9 = Strong Gale (75–88 km/h sustained). Trees snap, structural damage possible. Cat 11 gusts = Violent Storm (103–117 km/h).
3. Why is the rain so heavy if the storm is far away?
Typhoons are like giant wet sponges spinning. The "arms" (rain bands) stretch hundreds of km. Slow movement = rain stays longer over one place.
4. When will it be safe to go to the beach / take a boat trip?
Not until several days after the storm passes and authorities give the all-clear. Waves and currents stay dangerous long after the rain stops.
5. Where do I get official updates?
- NCHMF Website:
nchmf.gov.vn - Vietnam Disaster Management Authority:
vnpt.vn/ local People’s Committees - Weather Apps: Windy, Ventusky, or local news (VTV, VnExpress).
Stay safe, stay dry, and listen to local authorities!
— Khánh Ly (Source: Nongnghiepmoitruong.vn / NCHMF)