Viewing archive of Sunday, 7 September 1997
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 1997 Sep 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 250 Issued at 2200Z on 07 SEP 1997IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS LOW. REGION 8085 (S25E64) HAS
ROTATED INTO VIEW AS A SMALL TO MODERATELY SIZED E-TYPE SUNSPOT
GROUP. 8085 HAS ALREADY PRODUCED SEVERAL SUBFLARES INCLUDING THE
LARGEST FLARE OF THE PAST DAY, A C3/SF AT 07/0620Z. REGION 8083
(S28E04) CONTINUES TO GROW BUT AT A REDUCED RATE FROM THE PREVIOUS
COUPLE OF DAYS. REGION 8082 (N21W04) HAS STARTED TO DECAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
C-CLASS ACTIVITY IS EXPECTED IN REGION 8085. ADDITIONAL SUBFLARES
ARE POSSIBLE IN REGIONS 8082 AND 8083 AS WELL. THERE IS A SMALL
CHANCE OF AN M-CLASS EVENT PREDOMINATELY FROM 8085.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS QUIET. THE GREATER THAN 2 MEV ELECTRON FLUX
WAS NORMAL TO MODERATE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 08 SEP to 10 SEP
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 SEP 102 Predicted 08 SEP-10 SEP 105/105/105 90 Day Mean 07 SEP 076
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 SEP 008/007 ESTIMATED AFR/AP 07 SEP 005/005 PREDICTED AFR/AP 08 SEP-10 SEP 005/008-010/012-010/015
VI. Geomagnetic Activity Probabilities 08 SEP to 10 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 05% |
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
AR 13932 84Season greetings from SpaceWeatherLive 2A little bit about our hobby for the general public 92024/12/23 AR13932 M8.9 & M4.1 associated CMEs 15Ask your obscure/"stupid" space weather questions. 128
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 | 120.1 -38.2 |