Viewing archive of Saturday, 18 June 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Jun 18 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 18 Jun 2016 until 20 Jun 2016
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
18 Jun 2016087006
19 Jun 2016087007
20 Jun 2016087007

Bulletin

Solar activity was very low with the X-ray flux remaining below C-level. The new region (Catania group 96, NOAA 2556) that rotated onto the disk from the east appears fairly simple and inactive, as do the two remaining other groups. Hence, quiet solar conditions are expected to continue with X-ray flux remaining below C level. No Earth directed CMEs have been observed in coronagraph data. Solar wind speed remained at elevated levels of around 600 km/s throughout the period. Total magnetic field slightly decreased to around 5nT with Bz variable. Solar wind is expected to gradually recover to nominal levels. Geomagnetic conditions were quiet to unsettled (both NOAA Kp and local K Dourbes 1-3) and expected to remain so.

Today's estimated international sunspot number (ISN): 049, based on 15 stations.

Solar indices for 17 Jun 2016

Wolf number Catania038
10cm solar flux087
AK Chambon La Forêt017
AK Wingst010
Estimated Ap009
Estimated international sunspot number041 - Based on 23 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-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026114.3 +28.4
Last 30 days102.4 +48.5

This day in history*

Solar flares
12001X3.14
22002X1.17
32023M2.83
42002M2.34
52000M1.23
DstG
11990-281G4
21982-137G3
31957-124G3
41959-122G4
51960-81G3
*since 1994

Aurora on this day in history

Discover more observations in our archive!

Social networks