Viewing archive of Sunday, 17 December 2017

Geophysical report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2017 Dec 17 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 351 Issued at 0245Z on 17 Dec 2017 This report is compiled from data received at SWO on 16 Dec
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
None
B. Proton Events
None.
C. Geomagnetic Activity Summary
The geomagnetic field was quiet.
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 071  SSN 000  Afr/Ap 003/002   X-ray Background A3.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 8.0e+05   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-15 satellite synchronous orbit W135 degrees)
Daily Electron Fluence
GT 2 MeV 8.80e+06 e/(cm2-ster-day)
(GOES-15 satellite synchronous orbit W135 degrees)
3 Hour K-indices
Boulder 0 0 2 1 1 1 1 2 Planetary 0 0 1 1 0 0 0 2 
F. Comments
  None.

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

Oulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes, Tromsø
Murmansk, Vorkuta
Kiruna, Luleå
The solar wind speed is currently high (780.7 km/sec.)

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

16:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 16:05 UTC

alert


15:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:59 UTC

alert


09:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 08:59 UTC

alert


06:27 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 54GW at 07:01 UTC


06:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 05:51 UTC

alert


Get instant alerts!

Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/27M2.0
Last geomagnetic storm2025/03/26Kp6+ (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025132.3 -22.3
Last 30 days131.2 -21.8

This day in history*

Solar flares
12001M3.28
21998M3.23
32025M2.0
42000M1.5
52000M1.38
DstG
11959-234G4
21976-125G2
31988-121G2
41991-101G1
51978-98G3
*since 1994

Social networks