Viewing archive of Friday, 5 June 1998

Solar activity report

Report of Solar-Geophysical Activity 1998 Jun 05 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 156 Issued at 2200Z on 05 JUN 1998

IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z

SOLAR ACTIVITY WAS LOW. REGION 8232 (S18E34) PRODUCED A HANDFUL OF C1/SF FLARES DURING THE PERIOD. THIS REGION IS NOW MAGNETICALLY CLASSIFIED AS A BETA-GAMMA. REGION 8033 (N28E36) PRODUCED SEVERAL SMALL SUBFLARES. THREE MODERATE SIZE FILAMENTS IN THE SOUTHERN HEMISPHERE FADED OVER A PERIOD OF SEVERAL HOURS BEGINNING EARLY ON 05 JUN. AN EXTENSIVE POST-ERUPTION ARCADE WAS OBSERVED IN BOTH EUV AND X-RAYS FOLLOWING THE FILAMENT DISRUPTIONS. A CME FROM THE SOUTHERN HEMISPHERE WAS ALSO OBSERVED DURING THE EARLY HOURS OF 05 JUN.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD REMAIN GENERALLY LOW. REGION 8232 MAINTAINS THE CAPABILITY OF PRODUCING AN ISOLATED M-CLASS EVENT. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 04/2100Z TO 05/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. SOLAR WIND VELOCITIES WERE UNDER 400 KM/S FOR THE MAJORITY OF THE PERIOD. A VERY WEAK ENHANCEMENT OF THE GT 10 MEV PROTON FLUX BEGAN NEAR 04/2000Z AND RETURNED TO BACKGROUND LEVELS AT THE END OF THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD BE PREDOMINANTLY QUIET TO UNSETTLED FOR THE NEXT THREE DAYS. ISOLATED ACTIVE PERIODS ARE POSSIBLE DURING THAT TIME. UNSETTLED TO ACTIVE CONDITIONS ARE POSSIBLE ON 09 JUN IN RESPONSE TO THE FILAMENT DISRUPTIONS MENTIONED ABOVE.
III. Event Probabilities 06 JUN to 08 JUN
Class M20%20%20%
Class X05%05%05%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       05 JUN 115
  Predicted   06 JUN-08 JUN  115/115/115
  90 Day Mean        05 JUN 109
V. Geomagnetic A Indices
OBSERVED AFR/AP 04 JUN  007/012
ESTIMATED AFR/AP 05 JUN  008/014
PREDICTED AFR/AP 06 JUN-08 JUN  010/012-007/010-010/012
VI. Geomagnetic Activity Probabilities 06 JUN to 08 JUN
A. Middle Latitudes
Active15%15%25%
Minor storm10%05%10%
Major-severe storm05%05%05%
B. High Latitudes
Active20%15%25%
Minor storm10%05%15%
Major-severe storm05%05%05%

<< 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!

100%

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:247
Current stretch spotless days:20

This day in history*

Solar flares
11998X3.7
21998X2.5
32001M9.9
42001M3.8
51998M1.8
ApG
1199744G2
2200330G2
3200226G1
4201612
5200712
*since 1994

Social networks