Viewing archive of Monday, 14 December 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Dec 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 349 Issued at 2200Z on 14 Dec 2020IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C4 event observed at
14/1437Z from Region 2792 (S22E39). There are currently 2 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 days one, two, and three (15 Dec,
16 Dec, 17 Dec).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 375 km/s at 13/2333Z. Total IMF reached 5 nT at
14/1346Z. The maximum southward component of Bz reached -2 nT at
14/1646Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 464 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (15 Dec, 16 Dec) and quiet to
unsettled levels on day three (17 Dec).
III. Event Probabilities 15 Dec to 17 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Dec 083 Predicted 15 Dec-17 Dec 083/083/084 90 Day Mean 14 Dec 082
V. Geomagnetic A Indices
Observed Afr/Ap 13 Dec 003/003 Estimated Afr/Ap 14 Dec 003/004 Predicted Afr/Ap 15 Dec-17 Dec 006/005-006/005-007/008
VI. Geomagnetic Activity Probabilities 15 Dec to 17 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 10% | 10% | 20% |
All times in UTC
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