Viewing archive of Friday, 14 August 1998

Solar activity report

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

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 226 Issued at 2200Z on 14 AUG 1998

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

SOLAR ACTIVITY WAS MODERATE. THIS WAS DUE TO A SINGLE M-CLASS EVENT, AN M3/1N FROM REGION 8293 (S23W78) AT 14/0828UT. THIS EVENT ALSO PRODUCED A TYPE II SWEEP. REGION 8293 IS THE PROCESS OF CROSSING OVER THE WEST LIMB. ALTHOUGH ACTIVE EARLIER IN THE DAY IT HAS BEEN RELATIVELY QUIET SINCE 14/1000UT. THE OTHER ACTIVE REGION HAS BEEN 8299 (N16W13). THE REGION HAS CHANGED LITTLE, STILL AROUND 510 MILLIONTHS WITH A CKO BETA-GAMMA-DELTA SPOT GROUP. THIS REGION SHOWED SOME PLAGE ENHANCEMENTS AND PRODUCED 2 C-CLASS EVENTS EARLY IN THE DAY. IT HAS BEEN RELATIVELY STABLE SINCE 14/0700UT. THE OTHER REGIONS HAVE BEEN MOSTLY STABLE AND QUIET. A NEW REGION WAS NUMBERED: REGION 8303 (N20E52).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW. REGION 8293 HAS A SLIGHT CHANCE OF PRODUCING AN M-CLASS FLARE BEFORE IT ROTATES OVER THE WEST LIMB. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 13/2100Z TO 14/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO CONTINUE TO BE QUIET TO UNSETTLED.
III. Event Probabilities 15 AUG to 17 AUG
Class M30%20%20%
Class X05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       14 AUG 137
  Predicted   15 AUG-17 AUG  135/130/125
  90 Day Mean        14 AUG 112
V. Geomagnetic A Indices
OBSERVED AFR/AP 13 AUG  005/009
ESTIMATED AFR/AP 14 AUG  005/008
PREDICTED AFR/AP 15 AUG-17 AUG  005/008-005/008-005/020
VI. Geomagnetic Activity Probabilities 15 AUG to 17 AUG
A. Middle Latitudes
Active10%10%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%20%
Minor storm10%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!

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 2019:240
Current stretch spotless days:13

This day in history*

Solar flares
12014M3.7
22014M3.2
31999M2.9
42002M2.4
52011M1.9
ApG
1200340G2
2201416
3199615
4200212
5201711
*since 1994

Social networks