Viewing archive of Thursday, 27 November 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 Nov 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 331 Issued at 2200Z on 27 Nov 2014IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
27/0047Z from Region 2222 (S20E59). There are currently 8 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 (28 Nov, 29 Nov,
30 Nov).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
431 km/s at 27/1938Z. Total IMF reached 10 nT at 27/0716Z. The maximum
southward component of Bz reached -8 nT at 27/1828Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 743 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (28 Nov, 29 Nov, 30
Nov).
III. Event Probabilities 28 Nov to 30 Nov
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Nov 179 Predicted 28 Nov-30 Nov 180/185/185 90 Day Mean 27 Nov 150
V. Geomagnetic A Indices
Observed Afr/Ap 26 Nov 004/003 Estimated Afr/Ap 27 Nov 008/008 Predicted Afr/Ap 28 Nov-30 Nov 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 28 Nov to 30 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 10% |
All times in UTC
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