Viewing archive of Thursday, 27 July 2006
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 2006 Jul 27 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 208 Issued at 2200Z on 27 Jul 2006IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity continues at very low levels. Region 901
(N05E00), the only sunspot group on the visible disk, produced
occasional low B-class flares. Considerable decay was observed in
the trailing sunspots in this region; however, new negative flux
emerged northwest of the leader spot. This location was the source
of most of the B-class flares.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet. Solar wind speed increased gradually
from 330 km/s to near 450 km/s by the end of the period. This
increase is associated with a weak high speed coronal hole stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet with isolated unsettled periods.
III. Event Probabilities 28 Jul to 30 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Jul 074 Predicted 28 Jul-30 Jul 075/075/075 90 Day Mean 27 Jul 078
V. Geomagnetic A Indices
Observed Afr/Ap 26 Jul 005/006 Estimated Afr/Ap 27 Jul 005/005 Predicted Afr/Ap 28 Jul-30 Jul 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 Jul to 30 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
Latest news
Monday, 13 May 2024
M6.6 solar flare with earth-directed CME
Sunday, 12 May 2024
Small CME impact, Record visitor amount
Saturday, 11 May 2024
Strongest geomagnetic storm since 2003, X5.8 solar flare
Latest forum messages
AR 3676 26May 2024 Geomagnetic Storms from AR 13664 (2) 285AR3664 856Space Weather Memes 354Could Cycle 25 be categorized as "historical"? 9
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 | 2024/05/12 | X1.02 |
| Last M-flare | 2024/05/13 | M1.5 |
| Last geomagnetic storm | 2024/05/12 | Kp7 (G3) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 144.3 +7.8 |
| Last 30 days | 176 +81.6 |