Summer Emergency: Surviving Heatwaves, Wildfires, and Storms
A heatwave without power, a wildfire nearby, or a severe storm — how to prepare for summer emergencies and protect yourself and your family.
A Heatwave Without Air Conditioning — When 40°C Becomes a Threat
It is mid-August. For three days the thermometer has been above 38 degrees Celsius, and last night never cooled below 28. The power grid in your region collapses under the load of millions of air conditioners — a rolling blackout hits your street. No power for at least 18 hours: no air conditioning, no fan.
Heat kills more people per year than all other weather extremes combined. During the heatwaves of 2019 and 2022 in Europe, thousands of people died — most were not homeless or seriously ill. They simply had no preparation.
Cooling Without Power: Strategy for Hot Days
Keep the House Cool, Not Warm
The most important rule: keep the heat outside during the day. Close all shutters, blinds, and curtains from sunrise to sunset. Dark, opaque shutters can reduce room temperature by up to 8 degrees Celsius. Open windows exclusively at night and in the early morning, when outdoor temperatures fall below indoor temperatures.
Damp cloths in front of openings act as a basic air conditioning system: air cools as it passes through wet fabric. Hang damp sheets in front of open windows at night.
Cooling the Body
Wrists, neck, and temples are effective cooling points because blood vessels run close to the skin surface there. Cool cloths on these spots measurably lower perceived body temperature. Cool foot baths are simple and effective.
Clothing made from linen or cotton in bright white reflects solar radiation and allows body heat to escape. Synthetic fabrics trap heat.
Water and Hydration Discipline
At 38 degrees, a resting adult loses up to one litre of fluid per hour through sweating. Without consistent drinking, dehydration can occur within hours. Target: at least three litres of water per day, more during physical activity.
Warning signs of heat stroke: hot, dry skin (no longer sweating), confusion, fainting. This is an emergency — move immediately to the coolest available room, apply wet cloth to the body, call emergency services (112 in Europe).
Wildfire Near Your Home: Preparing for Evacuation
In many parts of Europe — southern Germany, Brandenburg, the Mediterranean regions — wildfires are no longer exceptional events. The critical insight: a wildfire can spread faster than a person can run.
Early Recognition and Warning Signs
A smell of smoke despite closed windows, an orange tint on the horizon, ash flakes on the terrace — these are early signs that a fire is nearby. Switch on local radio immediately and seek information from civil protection services.
The rule is: do not wait for an official evacuation order. If in doubt, go early.
Evacuation Preparation
Your emergency backpack should always be ready at the exit. When evacuating, take: identity documents (copies in a waterproof pouch), medications for 30 days, drinking water for 24 hours, charging cables and a power bank, cash.
When leaving, close all windows and doors firmly — this slows the entry of smoke and sparks. Turn off the gas supply at the main valve. Take your pets.
Drive on evacuation routes, not on field tracks — field tracks can be cut off by flames.
Storms and Flooding in Summer
Heavy rainfall and flash storms can flood underpasses within minutes and fill cellars with water. Events like the flooding in the Ahr Valley in 2021 showed how quickly local rainfall can become catastrophe.
Prevention Before the Storm
Monitor weather radar apps and storm warnings from your national meteorological service. Warning level 3 (orange) means: prepare. Warning level 4 (red) means: act.
Protect the basement: sandbags (or water-filled flood barriers) in front of cellar doors and low-lying windows. Move valuable items out of the basement. Switch off power to the cellar.
During the Storm
Stay indoors. Never drive through a flooded road — as little as 30 centimetres of water depth can sweep away a car. If your vehicle is sinking in an underpass: open the window immediately (electric window controls do not work underwater), release the seatbelt, swim out.
Drinking Water After Flooding
Flooded tap water may be contaminated with faecal bacteria, chemicals, or heavy metals. Boil tap water or use your stored water supply until an official clearance has been issued.
Summer Supplies and Heat-Specific Requirements
In summer, food spoils quickly without refrigeration. Your emergency supply should be built around heat-stable products:
| Food | Stability at Heat | Notes |
|---|---|---|
| Nuts and dried fruit | > 12 months | Store in airtight packaging |
| Canned legumes | > 3 years | No heat risk |
| Crispbread | > 12 months | Store dry |
| Energy bars | 6–12 months | May melt but remain safe |
| Honey | Years | Ideal in heat |
| Bottled water | Per manufacturer | Always store in the shade |
Perishables such as meat, dairy, and fresh eggs: consume these first once refrigeration fails. Frozen food stays safe in a closed freezer for up to 48 hours — open as infrequently as possible.
Summer Emergency Preparedness Checklist
| Area | Measure | Priority |
|---|---|---|
| Cooling | Dark shutters / opaque curtains | High |
| Water | 20 litres drinking water per person as reserve | High |
| Cooling | Towels, spray bottles for body cooling | Medium |
| Evacuation | Emergency backpack with 72-hour contents, always ready | High |
| Information | Battery radio + storm warning app | High |
| Basement | Sandbags or flood barriers | Medium |
| Medication | Keep heat-sensitive medications (insulin, etc.) cool | High |
