Tag Archives: C flares

The Sun online and solar activity. 19.10.2014

картинка солнца 19 октября

During the past 24 hours, one X flare and nine C flares were released by beta-gamma region NOAA AR 2192. The long duration X1.1 flare peaked at 5:03 UT on October 19. It seems that the X flare was not accompanied by a CME. In the next 48 hours, X flares are possible, especially from AR 2192.Over the last 24 hours the solar wind speeds observed by ACE varied between about 355 and 515 km/s, with current speed values around 400 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between 2 and 11 nT, with current values around 10 nT. Solar wind speeds are expected to stay nominal until October 22, when they are likely to increase to well over 500 km/s due to the expected arrival of a coronal hole high speed stream. Geomagnetic conditions during the last 24 hours were quiet to active (K Dourbes between 2 and 4; NOAA Kp between 2 and 4). Quiet geomagnetic levels (K Dourbes < 4) with active excursions (K Dourbes = 4) are expected on October 19, 20 and 21.

The Sun online and solar activity 17.10.2014

солнце 17 октября

INFO FROM SIDC – RWC BELGIUM 2014 Oct 17 11:34:19

During the past 24 hours, one M flare and four C flares were released by the backside region close to the east limb that produced both M flares on October 14 (probably this region is the return of M-flaring region NOAA AR 2173). The M4.3 flare peaked at 13:03 UT on October 16. In the next 48 hours, M flares are possible, especially from the region near the east limb that has produced the three M flares.Over the last 24 hours the solar wind speeds observed by ACE varied between about 380 and 500 km/s, with current speed values around 435 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between 1.5 and 7.5 nT, with current values around 5.5 nT. Geomagnetic conditions during the last 24 hours were quiet to active (K Dourbes between 1 and 4; NOAA Kp between 1 and 3). Quiet geomagnetic levels (K Dourbes < 4) are expected on October 17, 18 and 19.

The Sun online and solar activity. 14.10.2014

солнце 14 октября

 

INFO FROM SIDC – RWC BELGIUM 2014 Oct 14

No C flares occurred during the past 24 hours. In the next 48 hours, Cflares are possible, especially from beta regions NOAA AR 2187 and2188.Over the last 24 hours, solar wind speed observed by ACE hasfluctuated between about 340 and 430 km/s. The magnitude of theInterplanetary Magnetic Field (IMF) first varied between 3 and 9 nT, andincreased further to 13 nT from around 4h UT on October 14.Over the past 24 hours, geomagnetic conditions were quiet (K Dourbesbetween 1 and 3; NOAA Kp between 1 and 3). Quiet geomagnetic levels (KDourbes < 4) are expected on October 14, 15 and 16, with a chance foractive levels (K Dourbes = 4).