Viewing archive of Thursday, 5 March 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 Mar 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 064 Issued at 2200Z on 05 MAR 1998IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z SOLAR ACTIVITY WAS LOW. REGION 8171 (S24W75) CONTINUES
TO PRODUCE C-CLASS FLARES. THE LARGEST OF THESE WAS A C4/SF AT
05/0912Z. REGION 8172 (N22W49) HAS GROWN INTO A SMALL C-TYPE SUNSPOT
GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
C-CLASS ACTIVITY IS EXPECTED TO CONTINUE IN REGION 8171. AN M-CLASS
FLARE IS POSSIBLE FROM THIS REGION BEFORE IT DEPARTS THE VISIBLE
DISK.
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 06 MAR to 08 MAR
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 05 MAR 097 Predicted 06 MAR-08 MAR 094/092/090 90 Day Mean 05 MAR 095
V. Geomagnetic A Indices
OBSERVED AFR/AP 04 MAR 004/008 ESTIMATED AFR/AP 05 MAR 006/008 PREDICTED AFR/AP 06 MAR-08 MAR 005/008-010/010-010/012
VI. Geomagnetic Activity Probabilities 06 MAR to 08 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 05% | 05% |
All times in UTC
Latest news
Sunday, 7 December 2025
M8.1 solar flare with earth-directed CME
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Latest forum messages
Coronal Hole 06 48Geminid Meteor Shower 22Current Farside Activity 250Incoming & Unnumbered Active Regions 33Filaments and prominences 414
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/12 | M1.1 |
| Last geomagnetic storm | 2025/12/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 135.1 +43.3 |
| Last 30 days | 109.3 +15.5 |