Viewing archive of Monday, 15 July 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jul 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 197 Issued at 2200Z on 15 Jul 2024IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
15/0937Z from Region 3738 (S09W68). There are currently 12 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, two, and three
(16 Jul, 17 Jul, 18 Jul).
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 336 km/s at 15/1646Z. Total IMF reached 6 nT at
15/2058Z. The maximum southward component of Bz reached -3 nT at
15/1643Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 128 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (16 Jul, 17 Jul) and quiet to
active levels on day three (18 Jul). Protons have a slight chance of
crossing threshold on days one, two, and three (16 Jul, 17 Jul, 18 Jul).
III. Event Probabilities 16 Jul to 18 Jul
| Class M | 65% | 65% | 65% |
| Class X | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Jul 233 Predicted 16 Jul-18 Jul 235/235/230 90 Day Mean 15 Jul 187
V. Geomagnetic A Indices
Observed Afr/Ap 14 Jul 009/005 Estimated Afr/Ap 15 Jul 006/006 Predicted Afr/Ap 16 Jul-18 Jul 005/005-006/005-007/010
VI. Geomagnetic Activity Probabilities 16 Jul to 18 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 30% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 30% |
| Major-severe storm | 15% | 15% | 40% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/09/14 | X4.54 |
| Last M-flare | 2024/09/14 | M3.0 |
| Last geomagnetic storm | 2024/09/13 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| August 2024 | 215.5 +19 |
| September 2024 | 158.7 -56.8 |
| Last 30 days | 166.5 -55 |