Viewing archive of fredag, 12 maj 2000
Solaktivitetsrapport
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.
Rapport för sol- och geofysisk aktivitet 2000 May 12 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 133 publicerat klockan 2200Z på 12 MAY 2000IA. Analys av solfläcksgrupper och solaktivitet från 11-2100Z till 12-2100Z SOLAR ACTIVITY WAS LOW. THERE WERE A NUMBER OF C-CLASS
X-RAY FLARES, ALL OF THEM OPTICALLY UNCORRELATED. A 32 DEGREE
FILAMENT ERUPTED FROM ROUGHLY S50E50 BETWEEN 11/22 AND 11/23UT. THE
ERUPTION WAS VISIBLE IN EIT IMAGERY AND LASCO REVEALED A DRAMATIC
CME OFF THE SOUTH POLE. AT THIS TIME THE CME DOES NOT APPEAR TO BE
EARTH DIRECTED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. THERE ARE CURRENTLY A NUMBER OF REGIONS CAPABLE OF
PRODUCING M FLARES.
IIA. Sammanfattning av geofysisk aktivitet 11-2100Z till 12-2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO MINOR STORM LEVELS. ACE DATA
INDICATED THE PASSAGE OF TWO SOLAR TRANSIENTS, ASSUMED TO BE RELATED
TO THE MULTIPLE FILAMENT ERUPTIONS OF 8 MAY. WHILE THE TRANSIENTS
PRODUCED SUSTAINED PERIODS OF NEGATIVE BZ, THE WIND SPEED REMAINED
VERY LOW INHIBITING A STRONG GEOMAGNETIC RESPONSE.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO MINOR STORM FOR THE FIRST TWO DAYS OF THE
PERIOD. ON THE FIRST DAY, WE EXPECT TO SEE INCREASES IN THE SOLAR
WIND SPEED DUE TO A SMALL CORONAL HOLE THAT IS NOW FAVORABLY
POSITIONED. A SHOCK ASSOCIATED WITH THE 10 MAY LONG DURATION FLARE
AND FILAMENT ERUPTION IS ALSO EXPECTED LATE 13 OR EARLY 14 MAY.
III. Chans för solutbrott från 13 MAY till 15 MAY
| M-klass | 50% | 50% | 50% |
| X-klass | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 12 MAY 190 Prognoserat 13 MAY-15 MAY 195/200/200 90 Day Mean 12 MAY 187
V. Geomagnetiskt A-index
OBSERVED AFR/AP 11 MAY 004/006 ESTIMATED AFR/AP 12 MAY 015/020 PREDICTED AFR/AP 13 MAY-15 MAY 020/020-015/015-008/008
VI. Chanser för geomagnetisk aktivitet från 13 MAY till 15 MAY
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 30% | 20% |
| Små stormförhållanden | 20% | 15% | 05% |
| Svåra stormförhållanden | 05% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 35% | 25% |
| Små stormförhållanden | 25% | 20% | 05% |
| Svåra stormförhållanden | 05% | 05% | 01% |
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