Viewing archive of Saturday, 14 March 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 Mar 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 73 Issued at 2200Z on 14 Mar 2015IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
14/0440Z from Region 2297 (S17W25). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(15 Mar, 16 Mar, 17 Mar).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 395 km/s at
13/2101Z. Total IMF reached 7 nT at 13/2309Z. The maximum southward
component of Bz reached -5 nT at 14/0348Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels on days one and three (15 Mar, 17
Mar) and quiet to unsettled levels on day two (16 Mar). Protons have a
slight chance of crossing threshold on days one, two, and three (15 Mar,
16 Mar, 17 Mar).
III. Event Probabilities 15 Mar to 17 Mar
| Class M | 70% | 70% | 70% |
| Class X | 20% | 20% | 20% |
| Proton | 20% | 20% | 20% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Mar 116 Predicted 15 Mar-17 Mar 115/112/110 90 Day Mean 14 Mar 140
V. Geomagnetic A Indices
Observed Afr/Ap 13 Mar 005/005 Estimated Afr/Ap 14 Mar 005/005 Predicted Afr/Ap 15 Mar-17 Mar 012/015-009/010-014/018
VI. Geomagnetic Activity Probabilities 15 Mar to 17 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 30% | 40% |
| Minor storm | 05% | 10% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 30% | 40% | 50% |
All times in UTC
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