Viewing archive of Tuesday, 11 July 2017
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 2017 Jul 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 192 Issued at 2200Z on 11 Jul 2017IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z 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
11/2031Z from Region 2665 (S06W03). There are currently 1 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 (12 Jul, 13 Jul,
14 Jul).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 640 km/s. Total IMF reached 10 nT at
10/2147Z. The maximum southward component of Bz reached -3 nT at
11/0303Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 477 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (12 Jul), quiet levels on
day two (13 Jul) and unsettled to active levels on day three (14 Jul).
III. Event Probabilities 12 Jul to 14 Jul
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jul 091 Predicted 12 Jul-14 Jul 090/090/090 90 Day Mean 11 Jul 076
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jul 011/010 Estimated Afr/Ap 11 Jul 009/010 Predicted Afr/Ap 12 Jul-14 Jul 008/008-005/005-011/015
VI. Geomagnetic Activity Probabilities 12 Jul to 14 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 25% |
| Minor storm | 05% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 15% | 30% |
| Major-severe storm | 30% | 10% | 40% |
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