Viewing archive of Wednesday, 5 May 2010
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 2010 May 05 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 125 Issued at 2200Z on 05 May 2010IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity increased to moderate levels. Region
1069 (N41W40) produced an M1/Sf flare at 05/1719Z and a C8 flare at
05/1152Z, as well as occasional lesser B- and C-class flares. Region
1069 gradually increased in area and maintained a beta-gamma
magnetic configuration. Region 1066 (S26W22) produced a B4 flare at
05/1618Z associated with an EIT-wave/dimming event. New Region 1070
(N21W08), a small simple B-type spot group, was assigned late in the
period.
IB. Solar Activity Forecast
Solar activity is expected to be low
during days 1 - 3 (06 - 08 May) with a chance for isolated M-class
flares from Region 1069.
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
Geomagnetic field activity was at quiet to (briefly) unsettled
levels. ACE solar wind measurements indicated Earth remained within
a subsiding coronal hole high-speed stream. Velocities gradually
decreased from 620 to 538 km/sec during the summary period. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the past 24 hours.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at mostly quiet levels during days 1 - 2 (06 - 07
May) as the coronal hole high-speed stream continues to subside.
Field activity is expected to increase to unsettled levels on day 3
(08 May) in response to the B4 wave/dimming event mentioned above.
III. Event Probabilities 06 May to 08 May
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 05 May 083 Predicted 06 May-08 May 084/084/084 90 Day Mean 05 May 082
V. Geomagnetic A Indices
Observed Afr/Ap 04 May 007/010 Estimated Afr/Ap 05 May 006/008 Predicted Afr/Ap 06 May-08 May 005/005-005/005-010/010
VI. Geomagnetic Activity Probabilities 06 May to 08 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 20% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
Latest news
Monday, 6 May 2024
X4.5 solar flare
Saturday, 4 May 2024
Sunspot region 3663, X1 solar flare
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Latest forum messages
AR3664 51AR3663 237Latest SC25 Predictions 120CME Imagery isn't updating since May 3rd. 10Sporadic E and Flare activity 20
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 | 2024/05/06 | X4.4 |
| Last M-flare | 2024/05/07 | M2.6 |
| Last geomagnetic storm | 2024/05/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| Last 30 days | 159 +66.6 |