Viewing archive of Monday, 15 July 2013
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 2013 Jul 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 196 Issued at 2200Z on 15 Jul 2013IA. 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 C3 event observed at
15/1055Z from Region 1791 (S14E04). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
chance for M-class flares on days one, two, and three (16 Jul, 17 Jul,
18 Jul).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
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 433 km/s at 15/1151Z. Total IMF reached 10 nT at 14/2255Z. The
maximum southward component of Bz reached -10 nT at 14/2248Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 1066
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (16 Jul, 17 Jul)
and unsettled to active levels on day three (18 Jul).
III. Event Probabilities 16 Jul to 18 Jul
| Class M | 25% | 25% | 25% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Jul 114 Predicted 16 Jul-18 Jul 115/115/120 90 Day Mean 15 Jul 121
V. Geomagnetic A Indices
Observed Afr/Ap 14 Jul 015/027 Estimated Afr/Ap 15 Jul 021/025 Predicted Afr/Ap 16 Jul-18 Jul 009/008-009/010-011/015
VI. Geomagnetic Activity Probabilities 16 Jul to 18 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 35% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 20% | 25% | 50% |
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