Severe Thunderstorm Warning: Grand Manan and Coastal Charlotte County at Risk for Damaging Winds and Heavy Rain
A Severe Thunderstorm Warning is in effect for Grand Manan and Coastal Charlotte County, New Brunswick, as a powerful thunderstorm moves through the region with the potential to bring damaging wind gusts and heavy rainfall.
Environment Canada has issued a Yellow Warning, indicating that severe weather conditions are either occurring or expected to develop. Residents and visitors across the warned area should prepare for rapidly changing conditions as the storm moves through.
Storm Location and Movement
According to Environment Canada, a severe thunderstorm was located approximately 20 kilometers west of Seal Cove and was moving southeast at 70 km/h.
The fast-moving storm increases the risk of sudden wind shifts, heavy downpours, and hazardous conditions along coastal areas.
Hazards Expected
The severe thunderstorm may produce:
- Wind gusts up to 90 km/h
- Heavy rainfall amounts
- Rapid changes in visibility
- Hazardous travel conditions
- Possible localized flooding in areas with poor drainage
Strong wind gusts can damage trees, outdoor structures, and cause power disruptions, especially in exposed coastal locations.
Communities and Locations Impacted
Areas that may experience the effects of this severe thunderstorm include:
- Seal Cove
- Anchorage Provincial Park
- Grand Harbour
- Woodwards Cove
- White Head
- Grand Manan
Residents throughout Grand Manan Island and Coastal Charlotte County should remain alert as the storm moves across the region.
What a Severe Thunderstorm Warning Means
Severe Thunderstorm Warnings are issued when imminent or occurring thunderstorms are expected to produce damaging weather, including:
- Large or damaging hail
- Strong wind gusts
- Heavy rainfall capable of causing flooding
These storms can intensify quickly, leaving little time to react once dangerous conditions arrive.
Safety Tips During Severe Thunderstorms
Residents should:
- Move indoors when thunder is heard
- Secure loose outdoor objects that could become airborne
- Avoid unnecessary travel during the strongest winds and rainfall
- Stay away from trees and coastal exposed areas
- Monitor Environment Canada alerts for updates
Boaters and those near coastal waters should use extra caution, as strong winds and sudden storms can create dangerous marine conditions.
Radar Watch HQ Weather Impact Summary
The main threats from this severe thunderstorm are damaging wind gusts and heavy rainfall. With the storm moving quickly southeast, communities across Grand Manan and Coastal Charlotte County should remain prepared for sudden weather changes.
Stay weather aware and continue monitoring official weather alerts as this storm progresses.

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Radar Watch HQ Top 5 Essential Emergency Preparedness Picks
Whether you’re preparing for severe thunderstorms, flash flooding, hurricanes, wildfires, or extended power outages, these five emergency essentials can help keep your household safer when severe weather strikes.
A portable power station provides reliable backup electricity during outages, allowing you to power phones, medical devices, laptops, lights, small appliances, and communication equipment without fuel.
Best for:
- Extended power outages
- Severe thunderstorms
- Hurricanes
- Winter storms
- Wildfires
2. Flood Protection Barriers & Sandless Flood Bags
Flood barriers help divert or absorb water before it enters garages, doorways, and low-lying areas. They deploy quickly and can help reduce property damage during flash flooding.
Best for:
- Flash Flood Warnings
- Heavy rainfall
- River flooding
- Coastal flooding
3. Rechargeable LED Flashlights
Bright, dependable flashlights are essential when the power goes out. Rechargeable or solar-powered models provide long-lasting illumination for navigating safely indoors and outdoors.
Best for:
- Overnight power outages
- Emergency evacuations
- Storm damage inspections
Keep phones, tablets, weather radios, and USB-powered devices charged when the electrical grid is unavailable. A solar power bank offers an additional charging option during prolonged emergencies.
Best for:
- Communication during outages
- Emergency weather alerts
- Travel and evacuation
A NOAA Weather Radio delivers official weather alerts directly from the National Weather Service, even when cellular networks or internet service are unavailable. It remains one of the most dependable ways to receive life-saving warnings.
Best for:
- Tornado warnings
- Severe thunderstorm warnings
- Flash flood warnings
- Hurricane alerts
- Winter storm emergencies
Why Radar Watch HQ Recommends These Essentials
At Radar Watch HQ, preparedness is just as important as staying informed. These five emergency essentials can help you stay connected, protect your property, and safely navigate severe weather events. Having supplies ready before storms arrive allows you to respond quickly when warnings are issued and conditions begin to deteriorate.
