Viewing archive of Saturday, 20 July 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jul 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 202 Issued at 2200Z on 20 Jul 2024IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z 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
20/0720Z from Region 3751 (S09W15). There are currently 13 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
(21 Jul, 22 Jul, 23 Jul).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 403 km/s at 20/0509Z. Total IMF reached 9 nT at
20/0905Z. The maximum southward component of Bz reached -5 nT at
20/0518Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 119 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (21 Jul), quiet to
unsettled levels on day two (22 Jul) and quiet levels on day three (23
Jul). Protons have a slight chance of crossing threshold on days one,
two, and three (21 Jul, 22 Jul, 23 Jul).
III. Event Probabilities 21 Jul to 23 Jul
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jul 207 Predicted 21 Jul-23 Jul 195/195/190 90 Day Mean 20 Jul 187
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jul 005/006 Estimated Afr/Ap 20 Jul 008/009 Predicted Afr/Ap 21 Jul-23 Jul 018/020-008/008-006/005
VI. Geomagnetic Activity Probabilities 21 Jul to 23 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 10% |
| Minor storm | 30% | 05% | 01% |
| Major-severe storm | 10% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 20% | 25% | 20% |
| Major-severe storm | 65% | 25% | 15% |
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Strong far side CME 323Filaments and prominences 595Incoming & Unnumbered Active Regions 1351Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 7Unspecified geomagnetic activity 1747
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |