Viewing archive of Thursday, 3 June 1999
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 1999 Jun 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 154 Issued at 2200Z on 03 JUN 1999IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8562 (S15W18)
PRODUCED AN M1/SF FLARE AT 03/0644UT. THIS REGION ALSO PRODUCED A
NUMBER OF C-CLASS SUBFLARES. GROWTH IN THIS REGION APPEARS TO BE
STABILIZING. IT IS NOW A D-TYPE GROUP WITH MODERATE MAGNETIC
COMPLEXITY. NEW REGION 8567 (S14W04) IS EMERGING ON THE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. C-CLASS FLARES ARE EXPECTED AND ADDITIONAL M-CLASS
FLARES ARE POSSIBLE. REGION 8562 IS EXPECTED TO BE THE PRIMARY FLARE
PRODUCER.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
THE GEOMAGNETIC FIELD WAS ACTIVE TO QUIET. A SMALL SHOCK WAS OBSERVED
AT L1 AT ABOUT 02/2035UT. ACTIVE CONDITIONS FOLLOWED DURING THE
02/21-24UT AND 03/00-03UT PERIODS. ACTIVITY LEVELS HAVE BEEN QUIET
SINCE THAT TIME. THE GREATER THAN 10 MEV PROTON EVENT HAS ENDED:
START 02/0245UT, MAXIMUM OF 48 PFU AT 02/1010UT, AND END 03/1410UT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 04 JUN to 06 JUN
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 03 JUN 174 Predicted 04 JUN-06 JUN 175/170/170 90 Day Mean 03 JUN 132
V. Geomagnetic A Indices
OBSERVED AFR/AP 02 JUN 009/011 ESTIMATED AFR/AP 03 JUN 010/008 PREDICTED AFR/AP 04 JUN-06 JUN 005/008-005/007-005/007
VI. Geomagnetic Activity Probabilities 04 JUN to 06 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
AR 13932 13Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 11Strong far side CME 335Incoming & Unnumbered Active Regions 1353Unspecified geomagnetic activity 1750
More topicsSupport 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!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.1 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 114 -43.9 |