Viewing archive of Tuesday, 4 February 2014
Solar activity 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.
Report of Solar-Geophysical Activity 2014 Feb 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 35 Issued at 2200Z on 04 Feb 2014IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z
Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M5 event observed at
04/0400Z from Region 1967 (S12W24). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate
with a chance for X-class flares on days one, two, and three (05 Feb, 06
Feb, 07 Feb).
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 380 km/s at
04/2055Z. Total IMF reached 9 nT at 04/1318Z. The maximum southward
component of Bz reached -5 nT at 04/0203Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (05 Feb, 06 Feb, 07
Feb). Protons have a slight chance of crossing threshold on days one,
two, and three (05 Feb, 06 Feb, 07 Feb).
III. Event Probabilities 05 Feb to 07 Feb
| Class M | 80% | 80% | 80% |
| Class X | 50% | 50% | 50% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Feb 188 Predicted 05 Feb-07 Feb 185/180/180 90 Day Mean 04 Feb 154
V. Geomagnetic A Indices
Observed Afr/Ap 03 Feb 005/005 Estimated Afr/Ap 04 Feb 008/008 Predicted Afr/Ap 05 Feb-07 Feb 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 05 Feb to 07 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
Latest news
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Latest forum messages
Unspecified geomagnetic activity 2306Filaments and prominences 81Incoming & Unnumbered Active Regions 1783AR4062 53Ask your obscure/"stupid" space weather questions. 366
More topicsSupport 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!
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/21 | M1.9 |
| Last geomagnetic storm | 2025/04/20 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 119.2 -15 |
| Last 30 days | 111.1 -31.9 |