Viewing archive of Monday, 15 January 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jan 15 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 15 Jan 2018 until 17 Jan 2018
Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
15 Jan 2018071011
16 Jan 2018071006
17 Jan 2018072010

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. A small bipolar region has emerged at S14E45 and is showing some evidence of growth that may increase flaring activity over the next 24 hours. There are no other significant Active Regions (AR) on the solar disk. There's a small filament channel located in the South-West, but appears stable. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares. The solar wind speed has decreased from around 575 to 500 km/s over the past 24 hours. The total magnetic field strength has remained around 6 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet.

Today's estimated international sunspot number (ISN): 007, based on 06 stations.

Solar indices for 14 Jan 2018

Wolf number Catania///
10cm solar flux071
AK Chambon La Forêt019
AK Wingst015
Estimated Ap014
Estimated international sunspot number000 - Based on 16 stations

Noticeable events summary

DayBeginMaxEndLocStrengthOP10cmCatania/NOAARadio burst types
None

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

All times in UTC

<< Go to daily overview page

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!

No Ads on SWL Pro!
No Ads on SWL Pro! Subscriptions
Donations
Support SpaceWeatherLive.com! Donate
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2026/03/30X1.4
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
Last 30 days90 +16.9

This day in history*

Solar flares
12001M7.89
22017M6.34
32001M5.75
42025M5.6
52024M3.9
DstG
11960-327G4
22001-228G2
31976-218G4
41973-211G4
51989-93G2
*since 1994

Aurora on this day in history

No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation

Social networks