Viewing archive of Thursday, 18 November 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 Nov 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 322 Issued at 0245Z on 18 NOV 1999 This report is compiled from data received at SWO on 17 NOVA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0345 0345 0345 300 0349 0349 0350 730 0516 0517 0517 220 0651 0651 0653 330 0947 0957 1002 8766 N17E21 M7.4 2B 9600 390 II/IV 1205 1224 1243 C5.7 320 1246 1246 1247 360 2012 2018 2027 8771 S15E70 C3.8 SF II
B. Proton Events
NO EVENT WAS IN PROGRESS DURING THE PERIOD.
HOWEVER, A VERY WEAK ENHANCEMENT OF THE GT 10 MEV FLUX WAS OBSERVED.
THIS ENHANCEMENT WAS BARELY ABOVE BACKGROUND.
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET TO
UNSETTLED.
D. Stratwarm
None.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 221 SSN 248 AFR/AP 010/010 X-RAY BACKGROUND C1.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 8.9E+05 GT 10 MEV 1.7E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.40E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 2 2 3 2 3 3 3 2 PLANETARY 2 2 2 2 3 3 3 2
F. Comments
A 245 MHZ NOISE STORM WAS IN PROGRESS FOR PART OF THE PERIOD.
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
Filaments and prominences 481AR 13901 90Incoming & Unnumbered Active Regions 1245Sunspot Latitudes at or near Solar Maximum 76The Rotations of AR 13780 and AR 13902 1
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |