Viewing archive of onsdag, 21 juli 1999
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 1999 Jul 21 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 202 publicerat klockan 2200Z på 21 JUL 1999IA. Analys av solfläcksgrupper och solaktivitet från 20-2100Z till 21-2100Z SOLAR ACTIVITY WAS LOW. SEVERAL MINOR C-CLASS X-RAY
EVENTS WERE OBSERVED OVER THE PAST 24 HOURS. REGION 8639 (N38W38)
EXHIBITED SIGNIFICANT GROWTH, AND IS NOW A CLASS D SUNSPOT GROUP
WITH APPROXIMATELY 15 SPOTS. REGION 8636 (N21E25) EXHIBITED SLIGHT
GROWTH DURING THE PERIOD AND HAS MAINTAINED A BETA GAMMA MAGNETIC
CONFIGURATION WITH 35 SPOTS . REGION 8641 (N30W73), AND REGION 8642
(S18E66) WERE NUMBERED TODAY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. REGION 8636 REMAINS CAPABLE OF PRODUCING C-CLASS AND
ISOLATED M-CLASS EVENTS.
IIA. Sammanfattning av geofysisk aktivitet 20-2100Z till 21-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. ACTIVE CONDITIONS WERE
OBSERVED DURING THE 21/1500-1800Z PERIOD.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINATELY QUIET TO UNSETTLED WITH PERIODS OF
ACTIVE CONDITIONS DURING THE FIRST DAY OF THE PERIOD. THE UNSETTLED
TO ISOLATED ACTIVE CONDITIONS MAY BE THE RESULT OF A CME EARLY ON
THE 19TH. EXPECT QUIET TO UNSETTLED CONDITIONS DURING DAY TWO AND
THREE.
III. Chans för solutbrott från 22 JUL till 24 JUL
| M-klass | 50% | 50% | 50% |
| X-klass | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 21 JUL 147 Prognoserat 22 JUL-24 JUL 155/165/170 90 Day Mean 21 JUL 154
V. Geomagnetiskt A-index
OBSERVED AFR/AP 20 JUL 005/006 ESTIMATED AFR/AP 21 JUL 012/016 PREDICTED AFR/AP 22 JUL-24 JUL 014/015-010/010-008/007
VI. Chanser för geomagnetisk aktivitet från 22 JUL till 24 JUL
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 20% | 20% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 25% | 25% |
| Små stormförhållanden | 15% | 10% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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Rymdvädersfakta
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