Viewing archive of Friday, 7 August 1998
Solar activity report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 219 Issued at 2200Z on 07 AUG 1998IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 08 AUG to 10 AUG
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 AUG 145 Predicted 08 AUG-10 AUG 150/150/145 90 Day Mean 07 AUG 110
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 AUG 043/069 ESTIMATED AFR/AP 07 AUG 018/039 PREDICTED AFR/AP 08 AUG-10 AUG 010/018-005/010-005/008
VI. Geomagnetic Activity Probabilities 08 AUG to 10 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 20% | 10% |
| Minor storm | 20% | 10% | 05% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
Gillam, MB, Whitehorse, YT, Yellowknife, NTFairbanks, AK
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Edmonton, AB, Saskatoon, SKAnchorage, AK, Juneau, AK
Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future
Calgary, ABLatest news
X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
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!
Latest alerts
02:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:45 UTC
Tuesday, 8 April 2025
23:57 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 00:44 UTC
22:42 UTC - Solar flare
Moderate M1.57 flare
22:24 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.52)
15:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:59 UTC
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/08 | M1.5 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 148.6 +14.4 |
| Last 30 days | 137.1 -0.2 |