Viewing archive of Tuesday, 18 January 2022

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2022 Jan 18 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 18 Jan 2022 until 20 Jan 2022
Solar flares

C-class flares expected, (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
18 Jan 2022114017
19 Jan 2022112017
20 Jan 2022110017

Bulletin

There are 7 visible active regions on the solar disk. NOAA AR 2929 has evolved into beta-gamma configuration. Nevertheless, the flaring activity was concentrated on NOAA AR 2930, the strongest was a C2.8 flare peaking at 14:15 UT on 17 January. More C-class flares can be expected in the next 24 hours, M-class flares are possible.

The flare described above was related to a narrow northward-directed CME, which is not expected to affect the Earth. No Earth directed CMEs were observed in the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux increased slightly above the 1000 pfu alert threshold and is expected to remain close to the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to increase in the next 24 hours.

The Earth is still under the influence of a High Speed Stream (HSS) with solar wind speeds close 550 km/s and interplanetary magnetic field around 4 nT. The interplanetary magnetic field phi angle was predominately in the negative sector (directed towards the Sun) over the last 24 hours. Around 21:00 UT on 17 January the magnetic field increased up to 8 nT with several hours of negative Bz (peaking at -7 nT), these could be mild signatures of the passage of the CME from 14 January (this occurred during a period containing data gaps and with data source changes between ACE and DISCOVR). The solar wind speed is expected to decrease in the next 24 hours.

Geomagnetic conditions reached active levels in Belgium (K_Bel = 4) in the past 24 hours, and minor storm conditions were reached at planetary levels (Kp = 5). Mostly unsettled conditions expected for the next 24 hours, if the CMEs from 15-16 January arrive (expected 19-20 January) then up to minor storm conditions can be expected.

Today's estimated international sunspot number (ISN): 063, based on 11 stations.

Solar indices for 17 Jan 2022

Wolf number Catania107
10cm solar flux114
AK Chambon La Forêt028
AK Wingst012
Estimated Ap011
Estimated international sunspot number084 - Based on 18 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 Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

Donate SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.4
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
Last 30 days128.1 -22.5

This day in history*

Solar flares
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
41976-101G1
51994-96G3
*since 1994

Social networks