SpaceWeatherLive .com
Real-time auroral and solar activity

Viewing archive of Wednesday, 1 July 2015

Solar activity report

Previous rotation Previous day Calendar
Next day Next rotation
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.
Report of Solar-Geophysical Activity 2015 Jul 01 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 182 Issued at 2200Z on 01 Jul 2015

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 30/2211Z from Region 2376 (N13E57). There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (02 Jul, 03 Jul, 04 Jul).
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 446 km/s at 01/1318Z. Total IMF reached 6 nT at 01/0624Z. The maximum southward component of Bz reached -4 nT at 01/1336Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 3 pfu at 01/1920Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 5953 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on days one, two, and three (02 Jul, 03 Jul, 04 Jul).
III. Event Probabilities 02 Jul to 04 Jul
Class M10%10%10%
Class X01%01%01%
Proton05%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       01 Jul 109
  Predicted   02 Jul-04 Jul 110/115/120
  90 Day Mean        01 Jul 124
V. Geomagnetic A Indices
  Observed Afr/Ap 30 Jun  008/007
  Estimated     Afr/Ap 01 Jul  006/007
  Predicted    Afr/Ap 02 Jul-04 Jul  006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 02 Jul to 04 Jul
A. Middle Latitudes
Active10%10%10%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%20%
Minor storm20%20%20%
Major-severe storm10%10%10%

All times in UTC

Previous rotation Previous day Calendar
Next day Next rotation

<< Go to daily overview page

Back to top

G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 23:19 UTC

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

Reykjavik

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

Tórshavn
Oulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes, Tromsø
Murmansk
Kiruna, Luleå

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

Kuopio
Bergen, Trondheim
Arkhangelsk
Sundsvall, Umeå

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

Tampere
The solar wind speed is currently moderately high (524.4 km/sec.)
The strength of the interplanetary magnetic field is moderate (11.1nT), the direction is slightly South (-6.62nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-79nT)
The maximum X-ray flux of the past two hours is:
C5.75

Latest news

Latest forum messages

Unspecified geomagnetic activity 2205AR4048 114New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 36Incoming & Unnumbered Active Regions 1659Filaments and prominences 750
More topics

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

23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:17 UTC

alert

21:03 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 75GW at 21:49 UTC

13:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 13:07 UTC

alert

12:33 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 75GW at 13:21 UTC

00:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:59 UTC

alert

Get instant alerts!

Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.5
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025143 +8.8
Last 30 days129.8 -16.3

This day in history*

Solar flares
12002M8.82
21999M6.76
32001M2.91
42003M2.74
52001M2.31
DstG
11979-202G3
21988-133G3
31984-120G4
42004-117G2
51994-111G3
*since 1994

Social networks