Viewing archive of fredag, 24 juli 1998
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 1998 Jul 24 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 205 publicerat klockan 2200Z på 24 JUL 1998IA. Analys av solfläcksgrupper och solaktivitet från 23-2100Z till 24-2100Z SOLAR ACTIVITY REMAINED AT LOW LEVELS. ISOLATED C-CLASS
SUBFLARES OCCURRED, THE LARGEST OF WHICH WAS A C8/SF FROM REGION
8280 (S23E40) AT 24/0338UT. REGION 8280 REMAINED THE LARGEST GROUP
ON THE DISK AND RETAINED A SIMPLE BIPOLAR MAGNETIC STRUCTURE. REGION
8282 (N32E43) GREW AT A MODERATE PACE AND PRODUCED ISOLATED
SUBFLARES. NO NEW REGIONS WERE NUMBERED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE
PREDOMINATELY LOW WITH A FAIR CHANCE FOR AN ISOLATED M-CLASS FLARE
FROM EITHER REGION 8280 OR 8282.
IIA. Sammanfattning av geofysisk aktivitet 23-2100Z till 24-2100Z
THE GEOMAGNETIC FIELD WAS AT UNSETTLED TO MINOR STORM LEVELS WITH
ISOLATED MAJOR STORM PERIODS OBSERVED AT HIGH LATITUDES. ACE
NEAR-REAL-TIME SOLAR WIND DATA INDICATED THE ACTIVITY WAS DUE TO A
HIGH SPEED STREAM ASSOCIATED WITH AN EXTENSION OF THE NORTHERN POLAR
CORONAL HOLE. THE GREATER THAN 2 MEV ELECTRON FLUX REACHED HIGH
LEVELS AT 23/2240UT, THEN VARIED FROM MODERATE TO HIGH LEVELS FOR
THE REST OF THE PERIOD.
IIB. Prognos för geofysisk aktivitet
THE CORONAL HOLE-RELATED
DISTURBANCE IS EXPECTED TO SUBSIDE TO QUIET TO ACTIVE LEVELS
TOMORROW. QUIET TO UNSETTLED CONDITIONS ARE EXPECTED FOR THE
REMAINDER OF THE PERIOD. THE GREATER THAN 2 MEV ELECTRON FLUX IS
EXPECTED TO REMAIN AT MODERATE TO HIGH LEVELS FOR MOST OF THE
PERIOD.
III. Chans för solutbrott från 25 JUL till 27 JUL
| M-klass | 25% | 25% | 25% |
| X-klass | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 24 JUL 125 Prognoserat 25 JUL-27 JUL 128/130/132 90 Day Mean 24 JUL 108
V. Geomagnetiskt A-index
OBSERVED AFR/AP 23 JUL 025/037 ESTIMATED AFR/AP 24 JUL 022/022 PREDICTED AFR/AP 25 JUL-27 JUL 012/015-010/010-007/007
VI. Chanser för geomagnetisk aktivitet från 25 JUL till 27 JUL
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 15% | 10% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 20% | 15% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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