Viewing archive of Sunday, 15 July 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jul 15 1230 UTC

SIDC Forecast

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

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
15 Jul 2018072003
16 Jul 2018073007
17 Jul 2018073007

Bulletin

Over the past 24 hours solar activity was very low with only a single B1.5 flare peaking at 08:47 UT from Catania sunspot group 89. This is the only spotted region on the visible disk. The greater than 10MeV proton flux remained at background levels over the past 24 hours. No Earth directed CMEs were detected. The flaring conditions are expected to be quiet for the next 24-hour period with a small chance of C-class flare. The solar wind speed has fluctuated between 495 and 360 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 2.5 and 5 nT. Bz component has fluctuated between -3.1 and +4 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. The geomagnetic field is expected to be mostly at quiet levels today and tomorrow.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 14 Jul 2018

Wolf number Catania///
10cm solar flux072
AK Chambon La Forêt009
AK Wingst005
Estimated Ap005
Estimated international sunspot number000 - Based on 22 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

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

Whitehorse, YT, Yellowknife, NT
Fairbanks, AK

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

Thursday, 10 April 2025
23:00 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 22:47 UTC

alert


20:45 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 50GW at 21:37 UTC


01:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 01:41 UTC

alert


Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/08M1.5
Last geomagnetic storm2025/04/06Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025141.4 +7.2
Last 30 days137.9 +0.4

This day in history*

Solar flares
12013M9.34
22024M5.47
32001M3.41
42000M1.63
52000M1.5
DstG
12001-271G4
21990-190G3
31978-114G4
41982-110G2
51959-88G1
*since 1994

Social networks