Viewing archive of Sunday, 24 October 1999
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 1999 Oct 24 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 297 Issued at 0245Z on 24 OCT 1999 This report is compiled from data received at SWO on 23 OCTA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0048 0107 0158 C2.7 II
B. Proton Events
None
C. Geomagnetic Activity Summary
ACTIVITY INCREASED DURING 23/0300
- 0600Z WITH ACTIVE PERIODS AT SOME MID-LATITUDE STATIONS AND ACTIVE
TO MAJOR STORM PERIODS AT HIGH LATITUDES. ANOTHER PERIOD OF
INCREASED ACTIVITY OCCURRED DURING 23/1400 - 2000Z WITH ACTIVE
PERIODS AT MIDDLE LATITUDES AND ACTIVE TO MINOR STORM PERIODS AT
HIGH LATITUDES. OTHERWISE, FIELD ACTIVITY WAS AT QUIET TO UNSETTLED
LEVELS.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 165 SSN 114 AFR/AP 019/026 X-RAY BACKGROUND C1.1 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 2.5E+06 GT 10 MEV 1.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 5.10E+07 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 4 4 2 4 4 3 3 PLANETARY 3 4 4 3 5 5 4 3
F. Comments
TYPE II SWEEP VELOCITY ESTIMATED 900 KM/SEC.
All times in UTC
Latest news
Thursday, 11 September 2025
Coronal hole faces Earth
Sunday, 31 August 2025
M2.7 solar flare with earth-directed CME!
Tuesday, 5 August 2025
M4.4 solar flare from sunspot region 4168
Latest forum messages
CMEs from 2025/10/03 50Incoming & Unnumbered Active Regions 2109Comet C/2025 A6 (Lemmon) 72Coronal Hole 85 2Unspecified geomagnetic activity 3204
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |