Viewing archive of Saturday, 19 June 2004
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 2004 Jun 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 171 Issued at 2200Z on 19 Jun 2004IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity was low. Today's activity consisted of
several C-class events, most of which were from Region 635 (S12E12).
The largest of these was a C3/Sf at 1937 UTC. Region 635 continues
to have a delta configuration in the trailer part of the group and
this was the location of most of the activity in the region. Region
634 (N12W05) managed to produce a C-class flare and appears to have
also developed a small delta configuration in the leader spots.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. There is a fair chance for an isolated M-class event
from Region 635 and perhaps also from Region 634.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next three days (20-22
June).
III. Event Probabilities 20 Jun to 22 Jun
| Class M | 55% | 55% | 55% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Jun 113 Predicted 20 Jun-22 Jun 115/110/110 90 Day Mean 19 Jun 102
V. Geomagnetic A Indices
Observed Afr/Ap 18 Jun 010/008 Estimated Afr/Ap 19 Jun 008/010 Predicted Afr/Ap 20 Jun-22 Jun 010/010-005/008-005/008
VI. Geomagnetic Activity Probabilities 20 Jun to 22 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
Latest news
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Latest forum messages
Incoming & Unnumbered Active Regions 236CMes from ar 4392 (19-21st of march) 267Growth of Cycle 25 994AR4401 15Space Weather Watch App 4
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 | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/18 | M2.7 |
| Last geomagnetic storm | 2026/03/23 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 77.7 -0.5 |
| Last 30 days | 72.3 -15.7 |