Viewing archive of Wednesday, 13 December 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 Dec 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 348 Issued at 2200Z on 13 Dec 2000IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity was low, with only minor C-class events
observed during the past 24 hours. The largest flare, a C4/Sf at
13/0823Z, originated from Region 9267, a growing region (currently a
23-spot DAI Beta) that generated yesterday's M1/1F event. Three new
regions were numbered today: 9268 (S17E74), 9269 (N14E63) and 9270
(S11E10).
IB. Solar Activity Forecast
Solar activity is expected to be low,
with the continued probability for isolated M-class events,
primarily from Region 9267.
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field was mostly quiet, with a single period of
unsettled conditions recorded at Boulder during the interval
13/0000-0300Z. The greater than 2 MeV electron fluxes at
geosynchronous altitudes continue to fluctuate between low and
moderate levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain at quiet to unsettled levels for the next three
days.
III. Event Probabilities 14 Dec to 16 Dec
| Class M | 40% | 40% | 40% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Dec 165 Predicted 14 Dec-16 Dec 170/170/175 90 Day Mean 13 Dec 176
V. Geomagnetic A Indices
Observed Afr/Ap 12 Dec 003/005 Estimated Afr/Ap 13 Dec 005/006 Predicted Afr/Ap 14 Dec-16 Dec 005/010-005/010-005/010
VI. Geomagnetic Activity Probabilities 14 Dec to 16 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Wednesday, 14 May 2025
Another X-flare! Potent sunspot region 4087!
Tuesday, 13 May 2025
X1.1 solar flare from sunspot region 4086
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Latest forum messages
Have you ever dreamed of the sun? 38AR 14093 10AR 14079 179Upper atmosphere phenomena Red sprites and Blue jets 23AR4087 213
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 | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/21 | M1.2 |
| Last geomagnetic storm | 2025/05/17 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 68.7 -72 |
| Last 30 days | 88.8 -25.2 |