Viewing archive of Wednesday, 29 July 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jul 29 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 29 Jul 2015 until 31 Jul 2015
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
29 Jul 2015101007
30 Jul 2015102007
31 Jul 2015104007

Bulletin

Solar activity is low, no C-class flares in past 24 h, although they can be expected to happen.

Geomagnetic conditions are quiet and expected to remain so, with solar wind speeds around 400 km/s and interplanetary magnetic field magnitudes below 5 nT.

Today's estimated international sunspot number (ISN): 074, based on 20 stations.

Solar indices for 28 Jul 2015

Wolf number Catania067
10cm solar flux101
AK Chambon La Forêt013
AK Wingst010
Estimated Ap010
Estimated international sunspot number068 - Based on 34 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-flare2026/02/04X4.21
Last M-flare2026/02/25M2.4
Last geomagnetic storm2026/03/03Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (4%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202675.1 -3.1
Last 30 days54.5 -72.1

This day in history*

Solar flares
12011X2.14
22012M9.15
32015M8.38
42015M6.5
52002M3.72
DstG
11970-258G2
22012-145G4
31993-137G3
41989-101G1
51978-93
*since 1994

Social networks