Viewing archive of Tuesday, 18 March 2008
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 2008 Mar 18 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 078 Issued at 2200Z on 18 Mar 2008IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z Solar activity was very low. No flares occurred during
the past 24 hours. Region 986 (S04W84) has decayed to a spotless
plage region.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (19 - 21 March).
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field was predominantly quiet to unsettled. There was
a single active period from 0300-0600Z. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (19 - 21 March).
III. Event Probabilities 19 Mar to 21 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 18 Mar 070 Predicted 19 Mar-21 Mar 070/070/070 90 Day Mean 18 Mar 072
V. Geomagnetic A Indices
Observed Afr/Ap 17 Mar 003/004 Estimated Afr/Ap 18 Mar 005/005 Predicted Afr/Ap 19 Mar-21 Mar 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 19 Mar to 21 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Monday, 23 December 2024
M9.0 solar flare with earth-directed CME
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Latest forum messages
AR13936 4AR 3936 4AR 3938 92024/12/23 AR13932 M8.9 & M4.1 associated CMEs 45Ask your obscure/"stupid" space weather questions. 136
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 | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/25 | M4.9 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 115.2 -37.3 |
| Last 30 days | 118.5 -39.1 |