The weather in Iceland can be notoriously variable. Average wind speeds in the lowlands may reach from 18 m/s (40 mph) on 10-20 days per year but upwards of 50 days per year at places in the highlands. However, wind speeds may reach a much higher number during severe weather conditions or up to 70.60 m/s (over 160 mph).
This Hex beam never stood a change against the forces of a recent February 2017 winter storm.
With this in mind, choosing the right durable HF antenna in a city environment is a must. Here is a recommend set-up consisting of a 43 foot marine antenna with a 1.5 KW antenna tuner. Yes, it is a compromise antenna with its pros and cons but when it comes to strength and endurance it will outperform any mass produced amateur radio antennas. The antenna counterpoise is achieved by a terminal to the roof metal sheets, the most common roofing material used in Iceland.
Another desirable option is a non-compromise antenna resonating as a ¼ wave on 5 bands (20-10m). This antenna, the LZAV-5B, made in Bulgaria in high grade aluminum with stainless steel hardware without any traps or delicate electronic components sensitive against long lasting wind vibrations, snow, ice, rain, humidity or other environmental elements. Radials are not necessary if the antenna is mounted on a large metal surface (roof). With proper guying, this antenna should last for a long period and requires minimum maintenance work. See the manufacture website.
Last but not least is the Ciro Mazzoni Magnetic HF Loop Antenna. An ideal antenna for limited space and made to withstand inclement weather. See this link for further info.