Viewing archive of Wednesday, 14 February 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Feb 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 45 Issued at 2200Z on 14 Feb 2024IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
14/0310Z from Region 3582 (N06W40). 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 days one and two (15 Feb,
16 Feb) and expected to be low with a chance for M-class flares on day
three (17 Feb).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 510 km/s at 14/0853Z. Total IMF reached 7
nT at 14/0607Z. The maximum southward component of Bz reached -5 nT at
14/0145Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 47 pfu at 14/1030Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 110 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (15 Feb) and quiet levels
on days two and three (16 Feb, 17 Feb). Protons greater than 10 Mev are
expected to cross threshold on day one (15 Feb) and have a slight chance
of crossing threshold on day two (16 Feb).
III. Event Probabilities 15 Feb to 17 Feb
| Class M | 55% | 55% | 35% |
| Class X | 15% | 15% | 05% |
| Proton | 75% | 15% | 05% |
| PCAF | red | ||
IV. Penticton 10.7 cm Flux
Observed 14 Feb 184 Predicted 15 Feb-17 Feb 185/182/175 90 Day Mean 14 Feb 162
V. Geomagnetic A Indices
Observed Afr/Ap 13 Feb 008/007 Estimated Afr/Ap 14 Feb 010/012 Predicted Afr/Ap 15 Feb-17 Feb 010/010-006/005-006/005
VI. Geomagnetic Activity Probabilities 15 Feb to 17 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 30% | 20% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/10/31 | X2.03 |
| Last M-flare | 2024/11/05 | M4.1 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| November 2024 | 215.8 +74.4 |
| Last 30 days | 161.1 +7.2 |