11 Jul 2023 | 02:32 PM UTC
Greece: Heatwave forecast over much of the country through at least July 17
Heatwave forecast over most of Greece through at least July 17. Transport and utility disruptions possible.
Event
Forecast models indicate that a heatwave will persist across much of Greece through at least July 17. As of July 11, the Hellenic National Meteorological Service has issued an updated red emergency weather bulletin (the highest level on a three-tier scale) warning extended area of high pressure accompanied by a very warm air mass will cause heatwave conditions across the country from July 12 through at least July 17. High temperatures are initially expected to prevail across central and southern mainland Greece on July 12, with highs of up to 40 C (104 F) possible in central interior regions. The excessive heat is expected to expand across the rest of the mainland and Greece's island regions from July 13 and is likely to peak July 14-15, when temperatures of up to 43 C (109 F) are expected in the interior of Thessaly and maximums of around 36-41 C (97-106 F) are likely across much of the country. A slight drop in temperatures is forecast from July 16; however, this will only be by a couple of degrees, and conditions will still remain extremely hot.
As of July 11, authorities have issued orange high-temperature warnings (the middle level on a three-tier scale) in the northern Aegean Islands. Yellow high-temperature warnings are in place across Crete, the Dodecanese Islands, Central and East Macedonia, East Sterea and Evia, Eprius, the Ionian Islands, Thessaly, and Thrace. Authorities will almost certainly issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.
Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout many parts of the country. Heatwaves also pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers being hospitalized for dehydration.
Transport and Utilities
Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Road surface damage is also possible, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on vehicles, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.
Advice
Monitor local media for weather updates and related advisories. During heatwaves, remain indoors in air conditioning when possible. If outdoor activities are necessary, frequently rest in shaded areas; avoid activity during the hottest times of the day. Stay well-hydrated by drinking plenty of fluids. Avoid alcoholic beverages, which are dehydrating; drink water that is bottled or has been boiled. Wear loose-fitting, light-colored clothing. Cotton fabrics are more cooling than synthetics. Promptly seek medical attention if signs of heat exhaustion or heat stroke develop. Charge battery-powered devices in case prolonged electricity outages occur.
