Weather
Maryland Winter Weather 2026/27: December Blizzard Survival Guide
Baltimore, MD – A powerful December winter storm could leave Maryland residents facing snow covered highways, frozen plumbing, dangerous ice accumulation and extended power outages. As winter 2026/27
By Erin Vale · 2026-11-15T17:23:41.450Z
Baltimore, MD – A powerful December winter storm could leave Maryland residents facing snow covered highways, frozen plumbing, dangerous ice accumulation and extended power outages. As winter 2026/27 approaches, homeowners across Baltimore, Baltimore County, the greater Baltimore metropolitan area and communities throughout Maryland should prepare before heavy snow, freezing rain and damaging winds create potentially dangerous conditions.
According to the National Weather Service and Maryland Department of Emergency Management, winter storms can produce significant snowfall, hazardous ice, strong winds and widespread transportation disruptions. Western Maryland faces greater potential for prolonged snowfall, while central Maryland and the Eastern Shore can experience rapidly changing conditions involving snow, sleet, freezing rain and coastal flooding.
Here are 10 critical steps Maryland residents should take before a December blizzard or major winter storm threatens their homes.
1. Inspect Your Roof Before Heavy Snow Causes Structural Damage Maryland winter storms can produce heavy, wet snow that places substantial weight on roofs, particularly when freezing rain follows earlier snowfall.
Inspect shingles, flashing, gutters and attic spaces for damage.
Homeowners in Baltimore, Columbia, Towson and Annapolis should pay particular attention to aging roofs and blocked drainage systems.
Residents in Garrett and Allegany counties should also prepare for repeated snowfall and drifting snow.
Watch for sagging ceilings, new cracks or unusual structural noises. Never climb onto an icy roof to remove snow.
2. Protect Water Pipes Before Freezing Temperatures Arrive Frozen pipes can burst and cause extensive water damage, especially in older homes with poorly insulated plumbing.
Insulate exposed pipes in basements, crawl spaces, garages and exterior walls.
Disconnect garden hoses, protect outdoor faucets and identify the home's main water shutoff valve.
Baltimore rowhouses and older homes throughout central Maryland may contain plumbing near exterior walls or unheated spaces.
Maintain indoor heating during cold outbreaks, including when traveling.
Open cabinet doors beneath vulnerable sinks to improve warm air circulation.
3. Service Your Furnace, Boiler or Heat Pump Before December A heating failure during a major snowstorm can quickly become a household emergency.
Schedule professional inspections of natural gas furnaces, oil fired boilers, propane systems and electric heat pumps.
Replace appropriate filters, verify thermostat operation and check heating fuel supplies.
Residents using fireplaces, pellet stoves or wood burning equipment should arrange chimney inspections and cleaning when necessary.
Keep outdoor heating equipment and exhaust outlets clear of drifting snow.
Never use kitchen ovens or outdoor cooking equipment to heat indoor spaces.
4. Prepare for Power Outages Lasting Several Days Heavy snow, freezing rain and strong winds can bring down trees and electrical lines.
Wooded neighborhoods in Howard, Montgomery, Baltimore and Anne Arundel counties may experience outages when ice covered branches fall onto utility infrastructure.
Keep flashlights, batteries, charged power banks and emergency radios accessible.
Households relying on electrically powered medical equipment should establish backup arrangements.
Portable generators must operate outdoors, at least 20 feet from windows, doors and vents, with exhaust directed away from buildings.
Never operate generators inside garages, basements or enclosed porches.
5. Build a Winter Storm Emergency Supply Kit Maintain at least three days of emergency supplies, with additional provisions for households in remote locations.
Store one gallon of drinking water per person daily, nonperishable food, prescription medications, blankets, first aid supplies and pet food.
Residents in western Maryland should consider additional provisions if mountain roads become impassable.
Homes relying on electrically powered private wells should store extra water because pumps may stop functioning during outages.
Keep supplies in an accessible location and review expiration dates before December.
6. Prevent Ice Dams and Expensive Interior Water Damage Ice dams develop when melting roof snow refreezes near colder roof edges, potentially allowing water to penetrate roofing materials.
Inspect attic insulation, seal accessible air leaks and maintain appropriate ventilation.
Replace deteriorated weatherstripping around windows and exterior doors.
Clean gutters and inspect downspouts before freezing conditions arrive.
Homes experiencing recurring ice dams should receive professional evaluations.
Avoid attempting dangerous roof repairs during icy weather.
7. Protect Chesapeake Bay and Coastal Homes From Winter Flooding Maryland's extensive shoreline creates winter hazards beyond snowfall.
Strong coastal storms can produce tidal flooding, damaging winds and elevated water levels along the Chesapeake Bay and Atlantic coastline.
Residents in Annapolis, Havre de Grace, Cambridge, St. Michaels, Ocean City and other vulnerable waterfront communities should review their property's flood exposure.
Secure outdoor furniture, inspect drainage systems and move valuables above known flood levels.
Homeowners should understand that standard homeowners insurance generally does not cover flood damage.
Review evacuation routes and follow local emergency management instructions when coastal flooding threatens.
8. Prepare Snowblowers, Driveways and Emergency Access Even moderate snowfall can cause significant disruptions across Maryland, especially when precipitation changes to freezing rain.
Inspect snowblowers, shovels and ice melting supplies before December.
Check equipment condition and store fuel safely.
Baltimore, Frederick, Rockville and Annapolis residents should review local snow emergency parking restrictions and sidewalk clearing requirements.
Keep exterior stairways, heating appliance vents, emergency exits and nearby fire hydrants accessible.
Residents with steep driveways should consider how ice accumulation could prevent vehicles or emergency responders from reaching their homes.
Avoid overexertion while shoveling, particularly if you have cardiovascular risk factors.
9. Test Carbon Monoxide Detectors Before Using Backup Heat Carbon monoxide poisoning becomes a serious concern when heating equipment malfunctions or generators are used improperly.
Test smoke and carbon monoxide alarms and replace batteries or devices according to manufacturer instructions.
Deep snow can obstruct vehicle exhaust pipes and heating system vents.
Never run a vehicle with its exhaust pipe blocked by snow.
Keep generator exhaust away from buildings and never use charcoal grills, camping stoves or kitchen ovens for indoor heating.
Anyone experiencing symptoms of possible carbon monoxide exposure should move to fresh air immediately and call 911.
10. Establish a Family Blizzard Emergency Plan Identify where household members can safely shelter if electricity or heating becomes unavailable.
Keep emergency contacts written down and locate warming centers when county or municipal officials announce their availability.
Check on older neighbors, residents with disabilities and people living alone.
Monitor National Weather Service forecasts, Maryland Department of Emergency Management announcements and Maryland 511 road conditions.
Avoid unnecessary travel during winter storm or blizzard warnings, particularly along Interstate 95, Interstate 70, Interstate 68, Interstate 83 and Interstate 695.
Drivers should also monitor conditions along U.S. Route 50 and the Chesapeake Bay Bridge, where strong winds and winter precipitation can create additional hazards.
Why December Preparation Matters for Maryland Winter 2026/27 Winter weather risks vary significantly across Maryland.
Baltimore, Towson, Columbia and central Maryland can experience heavy wet snow, freezing rain and widespread commuter disruptions.
Frederick, Hagerstown and Washington County may encounter greater snow accumulation, icy roads and colder temperatures.
Western Maryland communities, including Cumberland, Frostburg and Oakland, face additional risks from mountain snowfall, strong winds and prolonged freezing conditions.
Annapolis, Southern Maryland and the Eastern Shore can experience rapidly changing precipitation types, while Ocean City and other coastal communities face damaging winds and tidal flooding during powerful winter storms.
Maryland's location between colder inland air and milder Atlantic air can create difficult forecasting situations. A small change in storm track or temperature can determine whether a community receives heavy snow, sleet, freezing rain or mostly rain.
Although this preparedness guide does not predict a specific December blizzard, significant winter storms remain a recurring seasonal hazard.
Waiting until a winter storm warning is issued can leave households scrambling for heating fuel, emergency supplies, backup power and snow removal equipment.
For Maryland residents, completing these 10 preparations before December storms develop could mean the difference between safely weathering severe winter conditions and facing frozen plumbing, heating failures, coastal flooding, expensive property damage or dangerous emergency travel.