Viewing archive of Monday, 14 September 2015
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 2015 Sep 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 257 Issued at 2200Z on 14 Sep 2015IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (15 Sep,
16 Sep, 17 Sep).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 545 km/s at 14/1354Z. Total IMF reached 10 nT at 14/0855Z. The
maximum southward component of Bz reached -8 nT at 14/0900Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 7601
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (15 Sep), unsettled
to active levels on day two (16 Sep) and quiet levels on day three (17
Sep).
III. Event Probabilities 15 Sep to 17 Sep
| Class M | 05% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Sep 097 Predicted 15 Sep-17 Sep 095/095/095 90 Day Mean 14 Sep 106
V. Geomagnetic A Indices
Observed Afr/Ap 13 Sep 008/011 Estimated Afr/Ap 14 Sep 014/018 Predicted Afr/Ap 15 Sep-17 Sep 015/020-015/018-007/008
VI. Geomagnetic Activity Probabilities 15 Sep to 17 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 20% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 30% | 25% | 30% |
| Major-severe storm | 55% | 45% | 25% |
All times in UTC
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