Viewing archive of Monday, 27 December 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 Dec 27 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 361 Issued at 0245Z on 27 DEC 1999 This report is compiled from data received at SWO on 26 DECA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0240 0240 0241 770 0614 0614 0614 150 0617 0618 0618 190 0646 0646 0646 100 1257 1257 1258 150 1611 1611 1612 430 1613 1617 1621 8806 N21W26 C1.7 SF 220 1655 1702 1709 C2.0 550
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET,
BECOMING SLIGHTLY DISTURBED AT THE END OF THE DAY.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 177 SSN 125 AFR/AP 001/002 X-RAY BACKGROUND B8.9 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 6.4E+04 GT 10 MEV 1.2E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 1.00E+05 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 0 0 0 0 1 0 1 PLANETARY 1 0 0 0 0 1 1 1
F. Comments
A SHOCK WAS OBSERVED AT ACE AT 2126UT, A MINOR IMPULSE WAS SEEN AT EARTH AROUND 2230UT.
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Latest forum messages
Unproven theories 376CME 2024-MAY-01 south of AR3654 C5.8 2Filaments and prominences 68ionosphere D detection 12Unspecified geomagnetic activity 959
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 | 2024/03/28 | X1.1 |
| Last M-flare | 2024/05/02 | M1.0 |
| Last geomagnetic storm | 2024/04/26 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| Last 30 days | 146.6 +47.6 |