Viewing archive of måndag, 26 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 26 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 207 publicerat klockan 2200Z på 26 JUL 1999IA. Analys av solfläcksgrupper och solaktivitet från 25-2100Z till 26-2100Z SOLAR ACTIVITY BECAME LOW. THE LARGEST EVENTS OF THE
PERIOD WERE LOW LEVEL C-CLASS BURSTS. REGION 8636 (N21W41) PRODUCED
SEVERAL SUBFLARES, DECREASED SLIGHTLY IN SIZE, AND APPEARED TO ONCE
AGAIN SIMPLIFY MAGNETICALLY. REGION 8645 (S27E47) REMAINED
PREDOMINANTLY STABLE. REGION 8639 (N38W99) PRODUCED FREQUENT
SURGING FROM BEHIND THE LIMB BUT PRODUCED NO DISCERNIBLE BURSTS.
POST EVENT ANALYSIS OF THE M2 FLARE GENERATED BY THIS REGION AT
25/1338Z INDICATED A LARGE CORONAL MASS EJECTION ACCOMPANIED THE
FLARE. HOWEVER, IT WAS DETERMINED BY SOHO SCIENTISTS THAT THIS CME
WAS NOT EARTH DIRECTED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS FORECAST TO BE LOW
TO MODERATE. BOTH REGIONS 8636 AND 8645 ARE CAPABLE OF PRODUCING
OCCASIONAL M-CLASS EVENTS. REGION 8636 COULD PRODUCE AN ISOLATED
X-CLASS EVENT BUT THAT LIKELIHOOD IS DECREASING AS THE REGION SLOWLY
DECAYS.
IIA. Sammanfattning av geofysisk aktivitet 25-2100Z till 26-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD SHOULD
REMAIN AT GENERALLY QUIET TO UNSETTLED LEVELS FOR THE NEXT THREE
DAYS. ISOLATED ACTIVE PERIODS ARE POSSIBLE DURING THAT TIME.
III. Chans för solutbrott från 27 JUL till 29 JUL
| M-klass | 75% | 75% | 75% |
| X-klass | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 26 JUL 172 Prognoserat 27 JUL-29 JUL 172/172/174 90 Day Mean 26 JUL 158
V. Geomagnetiskt A-index
OBSERVED AFR/AP 25 JUL 008/008 ESTIMATED AFR/AP 26 JUL 008/007 PREDICTED AFR/AP 27 JUL-29 JUL 008/007-010/012-008/008
VI. Chanser för geomagnetisk aktivitet från 27 JUL till 29 JUL
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 30% | 15% |
| Små stormförhållanden | 05% | 15% | 05% |
| Svåra stormförhållanden | 01% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 30% | 20% |
| Små stormförhållanden | 05% | 15% | 05% |
| Svåra stormförhållanden | 01% | 05% | 01% |
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
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| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
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| mars 2024 | 104.9 -19.8 |