Viewing archive of Thursday, 31 January 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jan 31 1234 UTC

SIDC Forecast

Valid from 1230 UTC, 31 Jan 2013 until 02 Feb 2013
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
31 Jan 2013097003
01 Feb 2013096003
02 Feb 2013096003

Bulletin

The all-quiet alert still holds. Catania sunspot group 75/NOAA AR 1663 showed minor flaring activity in the B-level. The solar wind passing the Earth is smooth, not causing any turbulence at all.

Today's estimated international sunspot number (ISN): 034, based on 10 stations.

Solar indices for 30 Jan 2013

Wolf number Catania059
10cm solar flux097
AK Chambon La Forêt004
AK Wingst001
Estimated Ap001
Estimated international sunspot number036 - Based on 17 stations

Noticeable events summary

DayBeginMaxEndLocStrengthOP10cmRadio burst typesCatania/NOAA
None

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

All times in UTC

<< Go to daily overview page

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB, Iqaluit, NU
Nuuk
The direction of the interplanetary magnetic field is slightly South (-6.84nT).
The maximum X-ray flux of the past two hours is:
C6.12

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

Sunday, 13 April 2025
22:21 UTC - Solar flare

Moderate M1.66 flare from sunspot region 4055

alert


22:03 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.01)


20:48 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 50GW at 21:39 UTC


19:09 UTC - Solar flare

Moderate M3.24 flare from sunspot region 4055

alert


18:51 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.07)


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/13M1.6
Last geomagnetic storm2025/04/06Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025136.4 +2.2
Last 30 days134.2 -8.9

This day in history*

Solar flares
12024M4.3
22002M2.07
32023M1.5
42001M1.47
52002M1.38
DstG
11973-134G4
21981-129G1
31971-121G4
41961-118G3
51990-104G2
*since 1994

Social networks