Viewing archive of Thursday, 15 December 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Dec 15 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 15 Dec 2022IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M4 event observed at
14/2206Z from Region 3165 (S20W49). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on day one (16 Dec) and
expected to be low with a chance for M-class flares and a slight chance
for an X-class flare on days two and three (17 Dec, 18 Dec).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 367 km/s at 15/1332Z. Total IMF reached 7 nT at
15/0614Z. The maximum southward component of Bz reached -7 nT at
15/0614Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 177 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (16 Dec, 17 Dec) and quiet to
unsettled levels on day three (18 Dec). Protons have a slight chance of
crossing threshold on days one, two, and three (16 Dec, 17 Dec, 18 Dec).
III. Event Probabilities 16 Dec to 18 Dec
| Class M | 60% | 50% | 50% |
| Class X | 15% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Dec 166 Predicted 16 Dec-18 Dec 164/162/160 90 Day Mean 15 Dec 133
V. Geomagnetic A Indices
Observed Afr/Ap 14 Dec 003/003 Estimated Afr/Ap 15 Dec 005/005 Predicted Afr/Ap 16 Dec-18 Dec 006/005-006/005-008/010
VI. Geomagnetic Activity Probabilities 16 Dec to 18 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
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