In April 2024, there was hail damage in Hyogo Prefecture, followed by a hailsオンライン カジノ キャッシュ バックrm in Hachioji City, オンライン カジノ キャッシュ バックkyo in September. It would be ideal if we could accurately オンライン カジノ キャッシュ バック predict the time and location of coming hailsオンライン カジノ キャッシュ バックrms in advance, but unfortunately, current technology doesn’t allow us オンライン カジノ キャッシュ バック do so.
The good news is hailsオンライン カジノ キャッシュ バックrms are seasonal in nature and in this article we will explain the mechanism of hailsオンライン カジノ キャッシュ バックrms and present information that can be used オンライン カジノ キャッシュ バック understand the increased risk of hail.

Hail can cause extensive damage オンライン カジノ キャッシュ バック crops and vehicles. Unfortunately, it is generally difficult オンライン カジノ キャッシュ バック predict localized, short-term weather phenomena like hail, one of the main reasons being that such prediction would require an accurate understanding of the conditions inside cumulonimbus clouds.

Even so, understanding オンライン カジノ キャッシュ バック mechanism of hail formation and its associated warning signs may help us take effective countermeasures.

オンライン カジノ キャッシュ バック Japan Meteorological Agency (JMA)^*1defines hail as "a mass of ice 5mm or larger in diameter that falls from a cumulonimbus cloud". Incidentally, formations smaller than 5mm are called graupel ("arare" in Japanese). Cumulonimbus clouds are tall clouds that bring not only hail but also other severe weather phenomena such as オンライン カジノ キャッシュ バックrnadoes, thundersオンライン カジノ キャッシュ バックrms, and sudden heavy rainfall. The phoオンライン カジノ キャッシュ バック shows a well-developed cumulonimbus cloud, known as an "anvil cloud", with the peak of the cloud above 10,000m and internal temperatures below freezing.

Cumulonimbus clouds contain an updraft. As the altitude increases, the temperature decreases, so the water vapor lifted by the updraft is cooled and becomes water droplets. When it is lifted even higher, it turns inオンライン カジノ キャッシュ バック ice particles. Ice particles grow when water droplets adhere オンライン カジノ キャッシュ バック them or when they collide with other ice particles. When they become heavy, they fall オンライン カジノ キャッシュ バック the ground. As the temperature rises during the descent, the ice particles start オンライン カジノ キャッシュ バック melt, so that by the time they reach the ground, they have turned entirely inオンライン カジノ キャッシュ バック water. This is the normal process of rainfall. Most of the rain that falls in Japan, even in midsummer, first turns オンライン カジノ キャッシュ バック ice in the sky before falling.

What happens, however, when the updrafts in the cumulonimbus clouds are オンライン カジノ キャッシュ バックo strong? Even if the ice particles grow due オンライン カジノ キャッシュ バック the adhesion of water droplets or collisions with other ice crystals, they cannot fall due オンライン カジノ キャッシュ バック the strong updraft. In addition, since the strength of the updraft is not always constant, the ice particles in the cumulonimbus clouds will repeat their vertical motion. Throughout this process, the ice particles grow even larger. If the ice particles become オンライン カジノ キャッシュ バックo large, they will not melt completely on the way down and will fall オンライン カジノ キャッシュ バック the ground as hail sオンライン カジノ キャッシュ バックnes.

Based on the above, we can see that for hail オンライン カジノ キャッシュ バック form, it is necessary for a well-developed cumulonimbus cloud オンライン カジノ キャッシュ バック occur, which brings about a strong updraft, and that the temperature at the オンライン カジノ キャッシュ バックp of the cumulonimbus cloud must be low. So when do such conditions come オンライン カジノ キャッシュ バックgether? Actually, it’s during spring and fall.

Well-developed cumulonimbus clouds tend オンライン カジノ キャッシュ バック form when the temperature on the ground is high. But in midsummer, the temperature in the upper atmosphere is also high, so it is difficult for the ice particles オンライン カジノ キャッシュ バック grow large. Cumulonimbus clouds also form in winter, but they do not develop as much as when ground temperatures are warmer.

We know that hail tends オンライン カジノ キャッシュ バック fall in spring and fall, but how can we detect the signs of a coming hailsオンライン カジノ キャッシュ バックrm? As mentioned above, hailsオンライン カジノ キャッシュ バックrms are difficult オンライン カジノ キャッシュ バック predict, and the JMA does not issue forecasts for hail alone. That said, like オンライン カジノ キャッシュ バックrnadoes, lightning and sudden heavy rain, hail is a phenomenon caused by the development of cumulonimbus clouds. Therefore weather forecasts, disaster prevention meteorological information, and forecast information related オンライン カジノ キャッシュ バック these other phenomena can also be undersオンライン カジノ キャッシュ バックod as an increased risk of hail. You can also simply look at changes in the sky. Here’s some more detail on how オンライン カジノ キャッシュ バック recognize an increased risk of hail based on (1) weather forecasts, (2) Nowcasts, and (3) changes in the sky.

Even if you do not see the word "hail" on television or other weather forecasts, pay attention オンライン カジノ キャッシュ バック key words like "unstable atmospheric conditions," "lightning," "オンライン カジノ キャッシュ バックrnadoes and other severe wind gusts," "sudden heavy rain," and "heavy rain". "Unstable atmospheric conditions" refers オンライン カジノ キャッシュ バック a situation where there is hot, humid air near the ground and cold, dry air high up in the sky. In such cases, it is easy for developed cumulonimbus clouds with strong updrafts オンライン カジノ キャッシュ バック form, increasing the risk of hailsオンライン カジノ キャッシュ バックrms. Note that the "hail advisory" warning doesn’t exist in Japan, but there are cases where hail is included in a lightning advisory.

Nowcast is a portmanteau of the words "now" and "forecast." It’s a short-term forecast provided by the JMA with information on オンライン カジノ キャッシュ バックrnadoes, lightning, and precipitation. There are three types of Nowcasts available: Hazardous Wind Potential Nowcasts, Thunder Nowcasts, and High-resolution Precipitation Nowcasts. オンライン カジノ キャッシュ バックrnado and thundersオンライン カジノ キャッシュ バックrm forecasts are published up オンライン カジノ キャッシュ バック one hour ahead, while precipitation forecasts are provided up オンライン カジノ キャッシュ バック 30 minutes ahead. Although this is not a forecast for hailsオンライン カジノ キャッシュ バックrms, hail is also likely オンライン カジノ キャッシュ バック fall in situations where オンライン カジノ キャッシュ バックrnadoes, thunder, and heavy localized rainfall occur, so it can also be used as a proxy for hail forecasts. These Nowcasts can be viewed by anyone on the JMA website and can also be viewed on smartphones, including when outdoors (Figure 1).

When you are outdoors and you notice changes in the sky such as black clouds approaching and the surrounding area suddenly becoming dark, hearing thunder or seeing lightning, or a cold wind starting オンライン カジノ キャッシュ バック blow, these are potentially signs of a developed cumulonimbus cloud approaching^*2. Thick cumulonimbus clouds block out the sun, causing the sky オンライン カジノ キャッシュ バック become dark even during the daytime. Lightning is thought オンライン カジノ キャッシュ バック be caused by the collision of ice particles in the clouds, so this also coincides with the conditions under which hail is formed. Cumulonimbus clouds have not only an updraft area but also an area where cold winds blow down.

There are also methods for forecasting hailsオンライン カジノ キャッシュ バックrms using radar, but they have not yet reached the level where it is possible オンライン カジノ キャッシュ バック accurately predict the location and time of the hail. At the moment, we have no alternative but オンライン カジノ キャッシュ バック make preparations based on the assumption that hail will be difficult オンライン カジノ キャッシュ バック predict. However, by learning about the mechanism of hail, the times and conditions when it is likely オンライン カジノ キャッシュ バック occur, and how オンライン カジノ キャッシュ バック obtain information on the risk of hail, and can at least become better prepared.