Viewing archive of Wednesday, 22 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 22 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 356 Issued at 0245Z on 22 DEC 1999 This report is compiled from data received at SWO on 21 DEC
A. Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
1355 1355 1356                       100
1447 1447 1447                       120
1453 1453 1454                       760
1522 1524 1541  8806 N20E32       SF 130
1712 1719 1722  8806 N24E34 M1.1  1N 190    70
2141 2146 2149              C2.6     870    47
2303 2304 2304                       540
B. Proton Events
None
C. Geomagnetic Activity Summary
THE GEOMAGNETIC FIELD WAS QUIET.
D. Stratwarm
None
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 217  SSN 129  AFR/AP 004/002   X-RAY BACKGROUND C1.1
DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS)
GT 1 MEV 3.6E+04   GT 10 MEV 1.3E+04 P/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
DAILY ELECTRON FLUENCE
GT 2 MEV 1.50E+06 E/(CM2-STER-DAY)
(GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES)
3 HOUR K-INDICES:
BOULDER 1 0 1 2 1 1 1 1 PLANETARY 0 0 1 1 1 1 0 1
F. Comments
  A 245 MHZ NOISE STORM WAS IN PROGRESS DURING MOST OF
THE PERIOD. A CME WAS OBSERVED BY SOHO AROUND 20/1600UT WHICH
APPEARED TO BE A BACKSIDE EVENT.


All times in UTC

<< Go to daily overview page

Latest news

Support 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!

77%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/06/10X1.55
Last M-flare2024/06/22M1.2
Last geomagnetic storm2024/06/15Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
May 2024171.7 +35.2
June 2024156.2 -15.5
Last 30 days147.7 -9.5

This day in history*

Solar flares
12015M9.46
22001M8.99
32023M4.9
42001M2.55
51999M2.54
DstG
12015-114.00G4
21961-85.00G3
31958-66.00G2
41979-47.00G1
51998-44.00
*since 1994

Social networks