Viewing archive of Wednesday, 4 May 2016
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 2016 May 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 125 Issued at 2200Z on 04 May 2016IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
04/1351Z from Region 2535 (N07W68). There are currently 5 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 day one (05 May) and likely to be
low on days two and three (06 May, 07 May).
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 522 km/s at 03/2202Z. Total IMF reached 5 nT at
04/0146Z. The maximum southward component of Bz reached -3 nT at
03/2153Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 5376 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (05 May, 06 May) and quiet to
active levels on day three (07 May).
III. Event Probabilities 05 May to 07 May
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 May 090 Predicted 05 May-07 May 095/100/100 90 Day Mean 04 May 095
V. Geomagnetic A Indices
Observed Afr/Ap 03 May 011/014 Estimated Afr/Ap 04 May 005/005 Predicted Afr/Ap 05 May-07 May 006/005-006/005-010/012
VI. Geomagnetic Activity Probabilities 05 May to 07 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 30% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 30% |
| Major-severe storm | 10% | 10% | 35% |
All times in UTC
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