Viewing archive of Sunday, 6 September 1998

Solar activity 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.
Report of Solar-Geophysical Activity 1998 Sep 06 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 249 Issued at 2200Z on 06 SEP 1998

IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z

SOLAR ACTIVITY WAS LOW. SEVERAL SMALL C-CLASS FLARES OCCURRED. MOST FLARES ORIGINATED IN REGIONS 8323 (S22W36) AND 8326 (N22E39). REGION 8323 REMAINS THE LARGEST AND APPARENTLY THE MOST COMPLEX GROUP ON THE DISK. NEITHER OF THESE REGIONS HAVE CHANGED SIGNIFICANTLY SINCE YESTERDAY. NEW REGIONS 8330 (S20E68) AND 8331 (N25E74) WERE NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE. C-CLASS FLARES ARE EXPECTED FROM REGIONS 8323 AND 8326. REGION 8323 APPEARS CAPABLE OF ENERGETIC FLARES.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX WAS MODERATE TO HIGH. A MINOR ENHANCEMENT OF THE GREATER THAN 10 MEV PROTON FLUX (ABOUT 1 PFU) OCCURRED EARLY IN THE DAY. THE SOURCE OF THE PROTONS WAS NOT IMMEDIATELY CLEAR.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 07 SEP to 09 SEP
Class M45%45%45%
Class X05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       06 SEP 165
  Predicted   07 SEP-09 SEP  150/150/150
  90 Day Mean        06 SEP 123
V. Geomagnetic A Indices
OBSERVED AFR/AP 05 SEP  003/006
ESTIMATED AFR/AP 06 SEP  005/008
PREDICTED AFR/AP 07 SEP-09 SEP  005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 07 SEP to 09 SEP
A. Middle Latitudes
Active15%15%15%
Minor storm10%10%10%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm10%10%10%
Major-severe storm01%01%01%

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!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/24M4.1
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024110.7 -41.8
Last 30 days117.3 -41.4

This day in history*

Solar flares
12001M5
22024M4.7
32024M4.1
42023M2.9
52023M2.6
DstG
11995-65G1
22014-57
32001-55G1
42002-49G1
51990-47
*since 1994

Social networks