Viewing archive of lördag, 23 oktober 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 Oct 23 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 296 publicerat klockan 2200Z på 23 OCT 1999IA. Analys av solfläcksgrupper och solaktivitet från 22-2100Z till 23-2100Z SOLAR ACTIVITY WAS LOW. THE X-RAY BACKGROUND HAS
REMAINED ABOVE C-LEVEL. A VARIETY OF ACTIVE REGIONS PRODUCED SMALL
FLARES, INCLUDING REGION 8731 (N12W92), 8739 (S13E30), AND 8741
(S26E50). REGION 8741 WAS THE MOST ACTIVE AND HAS UNDERGONE
CONSIDERABLE GROWTH SINCE YESTERDAY. REGION 8739 HAS ALSO GROWN.
BOTH REGIONS CONTAIN MIXED POLARITIES. NEW REGION 8742 (N06E82) IS
ROTATING AROUND THE EAST LIMB.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. LOW-LEVEL M-CLASS ACTIVITY IS POSSIBLE IN REGIONS 8739
OR 8741.
IIA. Sammanfattning av geofysisk aktivitet 22-2100Z till 23-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORM LEVELS IN THE
WAKE OF YESTERDAY'S MAJOR STORM ACTIVITY. SOLAR WIND SPEEDS REMAINED
AT OR ABOVE 600 KM/S AND THE IMF BZ FLUCTUATED BETWEEN +/- 5 NT. THE
GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS
MODERATE TO HIGH.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PREDOMINATELY UNSETTLED TO ACTIVE WITH ISOLATED STORM
PERIODS AS WE RECOVER FROM THE MAJOR ACTIVITY OF OCTOBER 22. FIELD
ACTIVITY MAY ALSO BE INFLUENCED OVER THE NEXT THREE DAYS BY A
CORONAL HOLE HIGH SPEED STREAM.
III. Chans för solutbrott från 24 OCT till 26 OCT
| M-klass | 30% | 30% | 30% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 23 OCT 165 Prognoserat 24 OCT-26 OCT 165/160/155 90 Day Mean 23 OCT 158
V. Geomagnetiskt A-index
OBSERVED AFR/AP 22 OCT 045/087 ESTIMATED AFR/AP 23 OCT 020/028 PREDICTED AFR/AP 24 OCT-26 OCT 020/030-020/020-010/015
VI. Chanser för geomagnetisk aktivitet från 24 OCT till 26 OCT
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 25% | 25% |
| Små stormförhållanden | 15% | 15% | 15% |
| Svåra stormförhållanden | 15% | 15% | 15% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 25% | 25% |
| Små stormförhållanden | 20% | 20% | 20% |
| Svåra stormförhållanden | 15% | 15% | 15% |
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/17 | M1.6 |
| Senaste geomagnetiska stormen | 2024/04/16 | Kp5 (G1) |
| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
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| mars 2024 | 104.9 -19.8 |