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The sea's sudden outflow -

If you observe the water receding rapidly from the coast, it is important to move away from the beach and find elevated areas. This could potentially indicate that a tsunami is about to occur.

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The abrupt change of water in a creek or river -

Tsunami warnings can also be observed further inland, characterized by unusual surges or fluctuations in rivers or lakes. This may indicate an upcoming landslide.

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Hailstones without rainfall -

Clouds that produce hailstones but no precipitation are commonly linked to strong winds that have the potential to generate tornadoes.

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Outdoor ground showing bulges or cracks -

Landslide risks can be detected in various locations like sidewalks, roads, or open ground, signaling imminent danger.

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Hair standing up -

If you are outdoors and you see that your hair is standing up, it could be a sign of an approaching lightning storm. Take necessary precautions and avoid being near trees.

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Wild animals running towards you -

Wild animals in the forest typically avoid humans, so if they are approaching you, it is probable that they are escaping from danger, such as a wildfire. You should follow their example!

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Square (or cross) waves -

When two currents come together, they create a grid-like pattern on the water's surface. Despite appearing calm, these waves possess enough strength to divert swimmers, surfers, and boats from their intended paths.

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Drooping leaves -

When a storm approaches, the rise in humidity causes tree leaves to sag and turn over in the wind.

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Cone-shaped funnel clouds -

If you notice a cloud starting to rotate on its axis, it may indicate the likelihood of a tornado and potentially severe storms. Warm funnel clouds are said to be the only ones that pose potential danger.

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A sudden rise in sea level -

This unexpected event may suggest the approach of a tsunami, therefore it is advisable to move to higher ground.

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Insects slowing down -

Certain insects, such as armyworm moths, cucurbit beetles, and potato aphids, respond to an approaching storm by reducing their activity level and conserving energy.

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New cracks appear on walls inside buildings -

If you live in an area abundant in limestone, be cautious of potential sinkhole formation near your residence. To ensure safety, promptly contact a surveyor for a thorough examination of your home.

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Sharks behavior -

If you are standing on a pier and notice that the sharks below are quickly retreating toward deeper water, it is likely that they are detecting an approaching hurricane.

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Low-hanging cloud strips -

Meteorologists refer to these cloud formations as inflow bands, signaling severe weather conditions, potentially including tornadoes.

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Smelly green water gunk -

If you come across a green cover that emits an unpleasant odor in a lake or the ocean, it is likely an algal bloom. These blooms are caused by an overabundance of nitrogen or phosphorus in the water, and they can potentially be harmful. Take precautions to stay away from it!

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Strange recurring wave surges -

Unusual swells crashing irregularly on the beach might indicate the approach of a tsunami from the ocean toward the shore.

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A green tint in the sky -

This unusual occurrence often happens prior to thunderstorms and occasionally before hailstorms. Specialists speculate that the color arises when sunlight combines with the blue light emitted by storm clouds.

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A roaring sound after prolonged heavy rain -

That roaring sound could mean there is a flash flood coming towards you. To stay safe, move to higher ground immediately.

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Tree trunks with splits or bark missing -

While killer trees may not be a major worry for you, the possibility of a tree collapsing on your home should not be dismissed. Look for cracks in the trunk or areas where bark is absent, as they are signs of compromised tree health.

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Dead fish on the coast of Texas, Florida, or Mexico -

It is highly likely that the fish died due to a natural occurrence known as red tide. Red tide is caused by a harmful micro-organism, resulting in the appearance of red algal scum on the water's surface. While swimming is not fatal, it may lead to feelings of nausea and difficulty breathing.

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A different smell in the air -

There is a peculiar smell, similar to chlorine, that may indicate an upcoming heavy thunderstorm. This odor is caused by chemical reactions during thunderstorms.

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Huge white clouds floating in a deep blue sky -

These cloud formations frequently indicate an impending thunderstorm on the horizon.

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A peculiar metallic taste in your mouth -

If you notice an unusual metallic taste in your mouth or feel pinpricks on your skin, it may indicate an approaching lightning strike.

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Choppy waves forming into channels -

Choppy waves forming into channels and the movement of seaweed and other debris towards the horizon may suggest the presence of a powerful riptide capable of swiftly carrying you far into the ocean.

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The moon gets a ring -

The presence of halo-like circles around the moon occurs due to the reflection of light on ice crystals found in cirrus clouds that are situated at high altitudes. Notably, cirrus clouds typically appear prior to severe weather, so its best to take precautions if you see this. 

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A wall or pedestal cloud -

This significant and frequently sudden decrease in cloud height, which forms beneath a cumulonimbus cloud, is ideal for tornado formation.

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Number of seconds between lightning and thunder -

According to most sources, the proximity of a storm can be gauged by counting the seconds between observing lightning and hearing the thunderclap—each five seconds equals one mile.

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Slight earth tremors -

Earth tremors should be taken seriously, particularly if they occur near an active volcano, as they may indicate an imminent earthquake or volcanic eruption.

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Highly active bees -

Researchers from Jiangxi Agricultural University in China have discovered that bees tend to intensify their foraging activities when they sense impending rainy conditions. The diligent insects proactively gather sufficient nectar to sustain themselves during the upcoming storm, displaying a strategic approach to weather anticipation. This finding sheds light on the fascinating behavior of bees and their remarkable ability to adapt to environmental changes

(Source: Scribol)

See also: Fun, easy ways to help the bees

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