Radar and Nowcast(Precipitation, Thunder, Tornado): |
|
| Area |
Valid for
Period of Animation
Animation
Precipitation
|
Thunder
|
Tornado
|
|
|
Tornado
|
Composite weather radar echoes and precipitation forecasts up to 60 minutes ahead are displayed in 1 km x 1 km resolution every 5 minutes, respectively. Any out-of-operation radars may cause radar echoes in affected areas to be weaker than they should be or not displayed at all.
Precipitation Nowcasts provide precipitation intensity forecasts of swiftly growing convections with a spatial resolution of 1 km up to an hour ahead to assist with disaster prevention activities.
Precipitation Nowcasts provide precipitation intensity forecasts of swiftly growing convections with a spatial resolution of 1 km up to an hour ahead to assist with disaster prevention activities.
Each activity has the following meanings.
- activity 4 : many lightning strikes
- activity 3 : some lightning strikes
- activity 2 : thundering
- activity 1 : potential for thundering
In the level 2 area, a hazardous wind such as a tornado occurs at the probability of 5-10% within an hour.
Similarly, a hazardous wind occurs at the probability of 1-5% in the level 1 area.
Though a hazardous wind is very rare phenomenon, it might take a heavy toll of lives.
Therefore, even at the low possibility of occurrence of a hazardous wind in the level 1 or level 2 areas,
when you hear thunder, see lightning, or observe dark threatening clouds developing overhead,
please try to secure from the hazardous wind in a sturdy building. Besides,
hazardous wind also happen even in the region where the possibility is lower than level 1.
Please pay enough attention to the sudden changes in the weather.