SpaceWeatherLive .com
Real-time auroral and solar activity

Viewing archive of Wednesday, 10 February 2010

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 2010 Feb 10 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 041 Issued at 2200Z on 10 Feb 2010

IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z

Solar activity was low. Todays activity consisted of 3 C-class events, as well as numerous B-class events. Region 1045 (N22W39) produced the largest event of the day, a C3.7 flare at 10/1514Z, but is beginning to show signs of decay. Region 1046 (N24E28) and Region 1047 (S18E43) remain stable and quiet. There is a recurrent, southern hemisphere coronal hole near the center disk.
IB. Solar Activity Forecast
Solar activity is expected to be predominately low. However, there is a chance for an isolated M-class flare for the next 3 days (11-13 February).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field has been quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be unsettled on day 1 (11 February). An increase to unsettled with a slight chance for active conditions is expected on day 2 (12 February), and unsettled conditions are expected on day 3 (13 February). The activity is forecast as a response to CME activity on 6 February.
III. Event Probabilities 11 Feb to 13 Feb
Class M30%20%20%
Class X05%05%05%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       10 Feb 091
  Predicted   11 Feb-13 Feb  090/090/092
  90 Day Mean        10 Feb 078
V. Geomagnetic A Indices
  Observed Afr/Ap 09 Feb  001/003
  Estimated     Afr/Ap 10 Feb  003/004
  Predicted    Afr/Ap 11 Feb-13 Feb  010/010-012/012-008/010
VI. Geomagnetic Activity Probabilities 11 Feb to 13 Feb
A. Middle Latitudes
Active30%35%30%
Minor storm05%10%05%
Major-severe storm01%05%01%
B. High Latitudes
Active35%40%35%
Minor storm10%15%10%
Major-severe storm01%05%01%

All times in UTC

Previous rotation Previous day Calendar
Next day Next rotation

<< Go to daily overview page

Back to top

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

Oulu, Rovaniemi, Sodankylä, Utsjoki
Reykjavik
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

Tórshavn
Kuopio
Bergen, Trondheim
Arkhangelsk, Vorkuta
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 (513 km/sec.)
The strength of the interplanetary magnetic field is high (20.09nT), the direction is slightly South (-9.06nT).

Latest news

Latest forum messages

CMEs from March 16-17 and small CH 199Aurora- with positive BZ and negative BY 39Filaments and prominences 738AR4028 16Changelog/Featurelog 167
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

19:39 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 53GW at 20:34 UTC

19:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:55 UTC

alert

17:45 UTC - Geomagnetic activity

Active geomagnetic conditions (Kp4) Threshold Reached: 17:30 UTC

alert

16:18 UTC - Solar flare

Moderate M1.22 flare

alert

16:15 UTC - Type II Radio Emission

Begin Time: 21/03/2025 15:57 UTC Estimated Velocity: 242km/sec.

Get instant alerts!

Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/21M1.2
Last geomagnetic storm2025/03/14Kp6- (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025138.4 -16.2
Last 30 days143 -6.3

This day in history*

Solar flares
12001M2.65
22013M2.32
32000M1.51
42001M1.41
52000M1.26
DstG
11990-136G3
21998-85G2
32001-83
41974-77G3
51989-75
*since 1994

Social networks