Viewing archive of Saturday, 9 September 2000
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 2000 Sep 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 253 Issued at 2200Z on 09 SEP 2000IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 9151 (N13W74)
PRODUCED AN M1/1N FLARE WITH ASSOCIATED TYPE-II RADIO SWEEP AT
09/0849 UTC. AVAILABLE SOHO/LASCO IMAGERY INDICATES AN ASSOCIATED
HALO CME WITH ITS EASTERN FLANK LIKELY DIRECTED EARTHWARD. REGION
9154 (S17W62) PRODUCED A C1/SF FLARE AT 09/0520 UTC. NEW REGION 9160
(S12E05) WAS NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE FOR THE NEXT THREE DAYS.
IIA. GEOPHYSICAL ACTIVITY SUMMARY 08/2100Z TO 09/2100Z:
THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET TO UNSETTLED, WITH AN
ISOLATED ACTIVE PERIOD ON 08/2100-2400 UTC.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED THROUGH DAY ONE, INCREASING TO
ACTIVE LEVELS ON DAYS TWO AND THREE, WITH THE ANTICIPATED ARRIVAL OF
THE EASTERN FLANK OF THE CME DISCUSSED IN SECTION 1A ABOVE.
III. Event Probabilities 10 SEP to 12 SEP
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 SEP 151 Predicted 10 SEP-12 SEP 145/140/135 90 Day Mean 09 SEP 180
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 SEP 014/021 ESTIMATED AFR/AP 09 SEP 010/011 PREDICTED AFR/AP 10 SEP-12 SEP 015/015-020/020-015/015
VI. Geomagnetic Activity Probabilities 10 SEP to 12 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 35% |
| Minor storm | 15% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 35% |
| Minor storm | 15% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Latest forum messages
Unproven theories 346AR3654 26Growth of Cycle 25 434Unspecified geomagnetic activity 954Changelog/Featurelog 154
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 | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/27 | M3.0 |
| Last geomagnetic storm | 2024/04/26 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |
| Last 30 days | 139.7 +33.3 |