The recent drop in temperatures to around -10°C has prompted the rapid freezing of lakes in the Stockholm area, enticing residents to dust off their ice skates. However, despite the seemingly solid surfaces, caution is paramount. The ice, while appearing safe, needs several days of consistent cold to achieve sufficient thickness for safe recreation. Annica Gerentz of the Stockholm Skating Association (SSSK) emphasizes the deceptive nature of newly formed ice, highlighting the need for it to ”grow” for a few days before venturing onto its surface. Freshly returned from surveying ice conditions in the Sörmland region, she underscores the dynamic nature of ice formation, explaining how suitable weather conditions can rapidly transform open water into skateable ice in a remarkably short time. The previous mild weather had thawed earlier ice formations in the Nacka and Södertörn areas, including around Hellasgården, Orlången, and Huddinge, leaving these typically early-freezing shallow, high-altitude lakes open once more.
The current freeze, however, presents an advantage: the formation of ”black ice”—a dense, hard ice known for its excellent load-bearing capacity. This desirable ice type forms on open water, unlike ice that forms over existing snow layers. However, the anticipated snowfall predicted for Monday poses a concern, as snow cover can impede further ice growth and compromise the ice’s overall strength. Should the ice continue to thicken sufficiently for weekend skating, Gerentz emphasizes three crucial considerations: equipment, companionship, and knowledge. Venturing onto the ice alone is strongly discouraged. Ideally, skaters should go in small groups, preferably with someone experienced in assessing ice conditions. Essential equipment includes ice claws with an attached whistle, an ice pick or drill, a measuring tape, a throw rope for rescuing someone who has fallen through, and a dry change of clothes in a waterproof bag.
Before heading out, consulting ice reports is vital. These reports, available from municipalities, skating associations, online skating networks, and the Swedish Meteorological and Hydrological Institute (SMHI), provide crucial updates on prevailing ice conditions. Importantly, observing others on the ice should not be interpreted as a guarantee of safety. Gerentz warns against the ”follow the leader” mentality, where seeing others on the ice can create a false sense of security, leading to ill-equipped individuals taking unnecessary risks. For beginners or those venturing out alone, opting for designated skating rinks, such as the one at Östermalms IP, is a safer alternative.
The deceptive nature of early ice can be attributed to several factors. While the surface may appear frozen, the underlying layers might still be thin and unstable. Fluctuations in temperature, underwater currents, and even the presence of vegetation can create weak spots invisible from the surface. The ’black ice’ mentioned, while strong, is also notoriously slippery, increasing the risk of falls and requiring extra caution. The anticipated snow further complicates the situation. Snow acts as an insulator, slowing down the freezing process and potentially creating a layer of slush beneath the snow, which further weakens the ice. Additionally, snow cover obscures the ice surface, making it difficult to identify potential hazards such as cracks or thin patches.
The importance of the recommended safety equipment cannot be overstated. Ice claws are crucial for self-rescue should one fall through the ice. The attached whistle allows for signaling for help. The ice pick or drill helps assess ice thickness, providing valuable information about its stability. A measuring tape aids in accurately determining ice thickness. The throw rope is a vital rescue tool, allowing others to pull a fallen individual out of the water. Finally, dry clothes are essential to prevent hypothermia, a serious risk for anyone immersed in freezing water.
The emphasis on companionship and experience underscores the inherent risks of ice skating on natural bodies of water. An experienced skater can identify potentially dangerous ice conditions, advise on safe routes, and assist in case of an accident. Going in a small group ensures that help is readily available should an incident occur. For those new to ice skating or unfamiliar with local conditions, participating in organized events or seeking guidance from experienced skaters is highly recommended. The annual ”Skating Day” event at Östermalms IP, organized by the Stockholm City Sports Administration, offers a safe and educational introduction to various ice sports, including bandy, speed skating, ice hockey, curling, ringette, and sled skating. The presence of the Friluftsfrämjandet (Swedish Outdoor Association) at this event further contributes to public awareness of ice safety.
In summary, while the allure of freshly frozen lakes is strong, venturing onto the ice requires careful consideration and preparation. The seemingly solid surface can conceal hidden dangers, and the dynamic nature of ice formation requires constant vigilance. By adhering to the recommended safety guidelines, consulting ice reports, and prioritizing proper equipment and companionship, skaters can minimize risks and enjoy a safe and pleasurable experience on the ice. For those unsure about conditions or lacking experience, organized skating events and designated rinks offer a safer alternative, allowing enjoyment of winter activities without compromising personal safety.
