May 29, 2013 (Thursday) April 21, 2010 National Space Weather Monitoring and Early Warning Center

Space Focus

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How to plan an aurora tour that can go at once!

In the early morning of April 24, 2023 Beijing time, an unexpected aurora occurred in the night sky of Xinjiang Uygur Autonomous Region of China. So why can Xinjiang also witness this aurora?

Space weather index (Issued at 10:00 on May 9, 2013)

  • Short wave listening index
  • Level 1 appropriate
  • The space weather conditions in the next 24 hours will not interfere with the short wave.
  • Carrier pigeon flight index
  • Level 1 appropriate
  • The space weather conditions in the next 24 hours will have little impact on carrier pigeon flight.
  • Beijing GPS navigation index
  • Level 1 appropriate
  • The space weather conditions in the next 24 hours will not interfere with GPS navigation.

Corresponding Table of Space Weather Levels

Space weather category Space weather level
solar activity
Extremely low low in high
Geomagnetic activity
calm Small magnetic storm Large magnetic storm Giant magnetic storm
Ionospheric radio wave propagation environment
good commonly difference range

Overview of space weather in the past 24 hours
(Issued at 10:00 on May 9, 2013)

In the past 24 hours, the solar activity level was moderate, and an M1.2 flare broke out; The solar wind speed dropped from 400 km/s to about 350 km/s.
In the past 24 hours, the solar activity level was moderate, and an M1.2 flare broke out; The solar wind speed dropped from 400 km/s to about 350 km/s.
In the past 24 hours, the solar activity level was moderate, and an M1.2 flare broke out; The solar wind speed dropped from 400 km/s to about 350 km/s.

Space weather forecast for the next three days
(Issued at 10:00 on May 9, 2013)

In the past 24 hours, the level of solar activity was about medium li/s.
In the past 24 hours, the solar activity level was about 350 km/s.
In the past 24 hours, the solar activity level in water li/s was about 350.

Major space weather events

Bastille Day incident

The "Bastille Day Event" in 2000 destroyed the satellite.

Halloween solar flare event

The strong flare that broke out from October to November 2003 is called Halloween Storm.

Solar storm destroys communication satellite

The 1997 solar storm event destroyed the geosynchronous communication satellite.

Magnetospheric strong electrons triggered by magnetic storms

The 1991 magnetic storm event resulted in extremely strong electrons in the magnetosphere.

Single event interfering with satellite

In 1990, the single event interfering with FY-1 satellite.

Magnetic storm that severely damages power system

In 1989, the most serious magnetic storm event that damaged the transmission system.

Carrington event

In 1859, the largest solar storm ever recorded occurred in history.

Journalism

Solar image (Issued at 10:00 on May 9, 2013)

Monochromatic image of the sun

Sun H α Image refers to H α Solar chromospheric images observed in the waveband. Solar flares, plaques and filaments (also called prominences on the edge of the solar surface) can be observed through this image

interview with an expert

Space tsunami helps you escape 20 minutes earlier

Have you ever thought that when the big earthquake came, space also shook? "Space tsunami" can help you escape 20 minutes earlier!