Grmljavina, munje i nevera na vodi: što učiniti

Posljednja provjera: 14. listopada 2026.

Korak po korak

1. Djelujte na prvi znak

   Tamni oblaci, postupno jačanje vjetra ili valova ili nagla promjena smjera vjetra znače da možda dolazi nevrijeme. Ako čujete grmljavinu, dovoljno ste blizu da vas pogodi munja. Odmah krenite u luku ili siguran zaklon.[12][22][14][1][25]

2. Prsluci za spašavanje na sve

   Udari vjetra iz grmljavinskog oblaka mogu prevrnuti malo plovilo. Pobrinite se da svi na plovilu odmah obuku prsluke za spašavanje.[9][18]

3. Usporite i osigurajte plovilo

   Smanjite brzinu da zadržite kontrolu. Spremite opremu koja se može pomicati, a posada neka sjedi nisko i na sredini plovila.[18][19]

4. Na maloj jedrilici popustite jedra na udarima

   Kad udari nagli nalet vjetra, popustite flok i glavno jedro dok se jedrilica ne počne uspravljati.[21]

5. Uđite unutra ili se spustite nisko

   Ako vaše plovilo ima kabinu, ostanite unutra. Ako nema, čučnite što niže na sredini plovila.[2][13][10]

6. Klonite se metala i vode

   Držite se dalje od metalnih dijelova i električnih uređaja i ne dodirujte istodobno dva uzemljena metalna predmeta. Držite ruke i noge unutar plovila.[10][2][5]

7. Spustite antenu; radio samo za hitne slučajeve

   Spustite ili privežite radijsku antenu i druge visoke dijelove ako nisu dio gromobranskog sustava. Ne koristite radio osim u hitnom slučaju.[6][16]

8. Ne možete do obale? Pričekajte da prođe

   Ako se ne možete vratiti na kopno, US National Weather Service savjetuje da spustite sidro i spustite se što niže. Grmljavinska nevremena obično su kratka, pa je bolje pričekati da prođe nego ploviti kroz njega.[15][3]

9. Ako je netko pogođen

   Odmah pozovite pomoć. Osoba koju je pogodila munja ne nosi električni naboj, pa ju je sigurno dodirnuti i pomoći joj.[20][7]

10. Nakon nevremena provjerite plovilo

    Ako je munja pogodila plovilo ili mislite da jest, provjerite ima li oštećenja na električnom sustavu i kompasu prije nego što se na njih oslonite.[8]

Nemojte

• Ne čekajte grmljavinu ili kišu da biste se vratili. Munja može udariti mnogo milja ispred nevremena.[4][14]
• Ne isplovljavajte ako je prognozirana grmljavina.[1]
• Ne dodirujte istodobno više od jednog uzemljenog metalnog predmeta.[10]
• Ne držite ruke ili noge u vodi.[5]
• Ne koristite radio za razgovor dok sijevaju munje; čuvajte ga za hitne slučajeve.[16]

Prije isplovljavanja

• Prije polaska: provjerite pomorsku prognozu i upozorenja zbog bilo kakvog spomena grmljavine ili nevere.[24][1]
• Prije polaska: imajte na umu da udari vjetra mogu biti 40 % jači od prognozirane prosječne brzine vjetra, a u nevremenu i jači.[23]
• Prije polaska: isplanirajte put za povlačenje i na karti saznajte gdje se možete skloniti.[11][26]
• Na vodi: redovito provjeravajte vremenske obavijesti na pomorskom radiju.[27]

Česta pitanja

Izvori

Izvori su citirani na izvornom jeziku.

1. US National Weather Service (NOAA) (2026-10-14): “It is therefore strongly recommended you do not venture out if thunderstorms are a possibility. If you do venture out and recognize thunderstorms nearby, head to port or safe shelter as quickly as possible.”
2. US National Weather Service (NOAA) (2026-10-14): “If your boat has a cabin, then stay inside and avoid touching metal or electrical devices. If your boat doesn't have a cabin, stay as low as you can in the boat.”
3. US National Weather Service (NOAA) (2026-10-14): “Keep in mind that thunderstorms are usually brief so waiting it out is better than riding it out.”
4. US National Weather Service (NOAA) (2026-10-14): “Stop all activities when there is lightning or when weather conditions look threatening. The first lightning strike can come out of a clear blue sky many miles ahead of an approaching thunderstorm cloud.”
5. US National Weather Service (NOAA) (2026-10-14): “Keep arms and legs in the boat. Do not dangle them in the water. Water conducts electricity from lightning.”
6. US National Weather Service (NOAA) (2026-10-14): “Lower, remove or tie down the radio antenna and other protruding devices if they are NOT part of a lightning protection system.”
7. US National Weather Service (NOAA) (2026-10-14): “Victims do not carry an electrical charge after being struck.”
8. US National Weather Service (NOAA) (2026-10-14): “If a boat has been struck by lightning, or is suspected of having been struck, check the electrical system and the compasses to ensure that no damage has occurred.”
9. US National Weather Service Melbourne (NOAA) (2026-10-14): “If a thunderstorm threatens while afloat, be sure everyone aboard is wearing a life jacket as a small boat can be overturned by gusty winds.”
10. US National Weather Service Melbourne (NOAA) (2026-10-14): “If lightning is threatening, keep below decks if possible; keep away from metal objects that are not grounded to the boat's protection system; don't touch more than one grounded object at the same time.”
11. US National Weather Service Melbourne (NOAA) (2026-10-14): “Have an escape plan in mind. Thunderstorms and weather related hazards form quickly. Never let these storms cut off your route back to land.”
12. US National Weather Service Melbourne (NOAA) (2026-10-14): “Dark, threatening clouds usually foretell the approach of severe weather. Other things to watch for are a steady increase in wind or seas or an increase in wind opposite in direction to a strong current.”
13. US National Weather Service Miami (NOAA) (2026-10-14): “Get out of the water, off the beach and out of small boats. If caught in a boat, crouch down in the center of the boat, away from metal hardware.”
14. US National Weather Service Miami (NOAA) (2026-10-14): “Remember, if you can hear thunder, you are close enough to the storm to be struck by lightning.”
15. US National Weather Service (NOAA) (2026-10-14): “If you are out and cannot get back to land and safety, drop anchor and get as low as possible.”
16. US National Weather Service (NOAA) (2026-10-14): “Remember to stay inside the cabin and away from any metal surfaces. Stay off the radio unless it is an emergency!”
17. US National Weather Service (NOAA) (2026-10-14): “Wait 30 minutes until after the last rumble of thunder before going back to the beach.”
18. Coastguard New Zealand (2026-10-14): “If you’re close to shore, consider heading back early. If you’re further out, reduce speed, secure loose items, and ensure all passengers are wearing lifejackets if not already.”
19. Coastguard New Zealand (2026-10-14): “Stabilise your boat by stowing loose gear and get your crew to sit low and in the middle of the hull to further improve stability and safety, especially in smaller boats.”
20. Coastguard New Zealand (2026-10-14): “And lastly, if you are in danger, call for help. Don’t risk a fatal event, as your pride got in the way of radio CH16.”
21. Transport Canada – Rental Boat Safety Checklist (Sailing Dinghy) (2026-10-14): “Release the jib and main sail until the boat starts to flatten out when there are unexpected gusts of wind”
22. Australian Bureau of Meteorology (2026-10-14): “sudden increase in wind speed or change in wind direction”
23. Australian Bureau of Meteorology (2026-10-14): “Forecasts show average wind speeds. Wind gusts can be 40% stronger than the average wind speed and even stronger during a storm.”
24. Australian Bureau of Meteorology (2026-10-14): “Check for mention of thunderstorms or squalls, as this may indicate strong winds could develop faster.”
25. Transport Canada – Safe Boating Guide (TP 511E) (2026-10-14): “Summer thunderstorms can strike quickly and without warning. Keep your eye on the sky when you’re out on the water. If it starts to look dark and cloudy, and conditions are changing quickly, head for shore.”
26. Transport Canada – Safe Boating Guide (TP 511E) (2026-10-14): “Remember to check your up-to-date nautical charts in advance so you’ll know where to find shelter.”
27. Transport Canada – Safe Boating Guide (TP 511E) (2026-10-14): “If you have a marine radio, you can get weather updates while you’re on the water.”

Još vodiča za hitne slučajeve

Brojevi za spašavanje po zemljama → Kako uputiti poziv MAYDAY → Kartica za hitne slučajeve za ispis →