Viewing archive of Monday, 14 September 1998

Solar activity report

Report of Solar-Geophysical Activity 1998 Sep 14 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 257 Issued at 2200Z on 14 SEP 1998

IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z

SOLAR ACTIVITY WAS LOW. A SINGLE C-CLASS EVENT OCCURRED; A C1/SF AT 0452Z FROM REGION 8326 (N21W66), A SPOTLESS PLAGE. ALTHOUGH SEVEN SPOTTED REGIONS ARE VISIBLE, NONE HAS BEEN PRODUCTIVE. THE LIMBS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD CONTINUE AT LOW LEVELS. WATCH THE NE LIMB FOR THE RETURN OF OLD REGION 8307 (N30, L-034), THE SITE OF FIVE X-CLASS FLARES LAST ROTATION. THAT REGION IS DUE TO RETURN IN THE NEXT 24 HOURS. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 13/2100Z TO 14/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD REMAIN AT QUIET TO UNSETTLED CONDITIONS THROUGHOUT THE FORECAST PERIOD.
III. Event Probabilities 15 SEP to 17 SEP
Class M15%15%15%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       14 SEP 122
  Predicted   15 SEP-17 SEP  120/120/125
  90 Day Mean        14 SEP 126
V. Geomagnetic A Indices
OBSERVED AFR/AP 13 SEP  004/006
ESTIMATED AFR/AP 14 SEP  005/009
PREDICTED AFR/AP 15 SEP-17 SEP  005/008-010/010-010/008
VI. Geomagnetic Activity Probabilities 15 SEP to 17 SEP
A. Middle Latitudes
Active10%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active10%30%30%
Minor storm05%10%10%
Major-severe storm01%01%01%

<< 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!

0%

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 2020:9
Current stretch spotless days:7

This day in history*

Solar flares
12005X3.8
22004M5.0
32005M2.6
42012M1.0
52014C8.9
ApG
1200558G2
2199537G2
3199427G1
4200725G1
5200418
*since 1994

Social networks