Viewing archive of Thursday, 15 May 2014
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 2014 May 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 135 Issued at 2200Z on 15 May 2014IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
15/0256Z from Region 2058 (S11W17). There are currently 9 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (16 May, 17 May,
18 May).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
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 364 km/s at
14/2255Z. Total IMF reached 6 nT at 15/2035Z. The maximum southward
component of Bz reached -5 nT at 15/1454Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 250 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (16 May) and quiet levels
on days two and three (17 May, 18 May).
III. Event Probabilities 16 May to 18 May
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 May 152 Predicted 16 May-18 May 155/150/145 90 Day Mean 15 May 150
V. Geomagnetic A Indices
Observed Afr/Ap 14 May 008/005 Estimated Afr/Ap 15 May 006/006 Predicted Afr/Ap 16 May-18 May 006/007-006/005-006/005
VI. Geomagnetic Activity Probabilities 16 May to 18 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 30% | 15% | 15% |
| Major-severe storm | 15% | 05% | 05% |
All times in UTC
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