Viewing archive of onsdag, 1 september 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 Sep 01 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 244 publicerat klockan 2200Z på 01 SEP 1999IA. Analys av solfläcksgrupper och solaktivitet från 31-2100Z till 01-2100Z SOLAR ACTIVITY HAS BEEN LOW FOR THE PAST 24 HOURS. THE
LARGEST EVENT WAS A C6/SF FLARE FROM REGION 8674 (S24W72). NO NEW
REGIONS WERE NUMBERED, THE X-RAY BACKGROUND LEVEL WAS NEAR OR
EXCEEDED C1 FOR MOST OF THE PERIOD. SURGING WAS REPORTED ON THE
WEST LIMB NEAR S20 AS REGION 8673 (S19W94) ROUNDED THE LIMB. A
FILAMENT LOCATED NEAR S10W25 ON 8/31/1500 UT WAS GONE BY 9/01/1538
UT. FILAMENT GROWTH WAS NOTED NEAR S25W10.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE FOR THE NEXT THREE DAYS. ISOLATED M-CLASS EVENTS ARE
POSSIBLE FROM REGION 8674 AND REGION 8681. BOTH REGIONS ARE
MODERATELY MAGNETICALLY COMPLEX. DEVELOPMENT MAY BE OCCURRING IN
THE SOUTHWEST QUADRANT NEAR REGIONS 8686 (S24W09) AND 8679 (S36W17).
IIA. Sammanfattning av geofysisk aktivitet 31-2100Z till 01-2100Z
THE GEOMAGNETIC FIELD HAS BEEN UNSETTLED TO ACTIVE FOR THE PAST 24
HOURS, WITH ONE PERIOD AT MINOR STORMS LEVELS (06-09 UT). THIS
ACTIVITY WAS CAUSED BY RELATIVELY STEADY, MODERATE VELOCITY (NEAR
550 KM/S) SOLAR WIND WITH A CONSISTENTLY SOUTHWARD MAGNETIC FIELD
(NEAR 5 NT). THE SECTOR POLARITY WAS POSITIVE (AWAY). ENERGETIC
ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS DURING
THE PERIOD.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO PERSIST AT UNSETTLED TO ACTIVE CONDITIONS, WITH ISOLATED
PERIODS AT STORM LEVELS. THE OVERALL LEVEL OF ACTIVITY IS EXPECTED
TO DECLINE TOWARD PREDOMINATELY UNSETTLED CONDITIONS BY THE END OF
THE FORECAST PERIOD. A SOLAR PROTON EVENT IS POSSIBLE BUT IS NOT
CONSIDERED LIKELY.
III. Chans för solutbrott från 02 SEP till 04 SEP
| M-klass | 50% | 40% | 30% |
| X-klass | 10% | 10% | 05% |
| Proton | 10% | 10% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 01 SEP 163 Prognoserat 02 SEP-04 SEP 155/150/145 90 Day Mean 01 SEP 169
V. Geomagnetiskt A-index
OBSERVED AFR/AP 31 AUG 012/018 ESTIMATED AFR/AP 01 SEP 020/018 PREDICTED AFR/AP 02 SEP-04 SEP 018/012-015/012-010/010
VI. Chanser för geomagnetisk aktivitet från 02 SEP till 04 SEP
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 15% | 10% |
| Små stormförhållanden | 15% | 10% | 05% |
| Svåra stormförhållanden | 05% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 20% | 20% |
| Små stormförhållanden | 20% | 15% | 10% |
| Svåra stormförhållanden | 20% | 05% | 05% |
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