Viewing archive of Friday, 9 June 2000
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 2000 Jun 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 161 Issued at 2200Z on 09 JUN 2000IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS LOW. REGION 9026 (N22W29) PRODUCED
A MINOR C-CLASS X-RAY EVENTS AT 08/2324Z AND 09/2048Z. NO
SIGNIFICANT CHANGES WERE OBSERVED DURING THE PERIOD IN REGION 9026.
REGION 9033 (N22E29) CONTINUES TO DISPLAY GROWTH AND IS CURRENTLY AN
FKI BETA GAMMA GROUP WITH APPROXIMATELY 42 SPOTS. NO NEW REGIONS
WERE NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. REGIONS 9026 AND 9033 ARE THE MOST LIKELY TO PRODUCE
M-CLASS EVENTS. THERE IS A SLIGHT CHANCE OF X-CLASS ACTIVITY.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. THE 10 MEV PROTON EVENT
GENERATED FROM THE X2/3B EVENT ON 06 JUNE ENDED AT 09/0325Z. THE
SOLAR WIND VELOCITY SLOWLY DECREASED DURING THE PERIOD FROM 750 TO
550 KM/S. WHILE MOST AVAILABLE DATA INDICATED THE CHANCE FOR A
STRONG GEOMAGNETIC STORM, THE BZ MEASURED AT THE ACE SPACECRAFT
STAYED NORTHWARD (POSITIVE) THE ENTIRE PERIOD, NOT ALLOWING FOR A
FAVORABLE MAJOR MAGNETIC STORM SITUATION TO OCCUR.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO RANGE FROM QUIET TO ACTIVE. THE EFFECTS OF A FAINT FULL
HALO CME, ASSOCIATED WITH THE X1/3B EVENT ON 7 JUNE, IS EXPECTED TO
IMPACT THE FIELD EARLY ON 10 JUNE. THIS MAY CAUSE ISOLATED PERIODS
OF MINOR STORM CONDITIONS TO BE OBSERVED.
III. Event Probabilities 10 JUN to 12 JUN
| Class M | 60% | 60% | 60% |
| Class X | 15% | 15% | 15% |
| Proton | 10% | 10% | 10% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 JUN 169 Predicted 10 JUN-12 JUN 175/185/190 90 Day Mean 09 JUN 188
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 JUN 034/053 ESTIMATED AFR/AP 09 JUN 012/014 PREDICTED AFR/AP 10 JUN-12 JUN 020/030-015/020-015/015
VI. Geomagnetic Activity Probabilities 10 JUN to 12 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 35% | 30% |
| Minor storm | 25% | 20% | 10% |
| Major-severe storm | 10% | 10% | 05% |
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