Viewing archive of torsdag, 29 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 29 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 210 publicerat klockan 2200Z på 29 JUL 1999IA. Analys av solfläcksgrupper och solaktivitet från 28-2100Z till 29-2100Z SOLAR ACTIVITY WAS HIGH. REGION 8651 (N24E49) PRODUCED
A VERY IMPULSIVE M5/1N FLARE AT 29/1936Z WITH SMALL CENTIMETRIC
BURSTS. THIS REGION EXHIBITED GROWTH IN BOTH WHITE LIGHT AND H-ALPHA
IMAGERY AND PLAGE COVERAGE WAS NEAR FLARE INTENSITY DURING THE
LATTER STAGES OF THE PERIOD. REGION 8645 (S24E10) PRODUCED AN M1/2N
FLARE AT 29/1656Z. THIS REGION HAS CONTINUED TO DEVELOP, COVERING
590 MILLIONTHS OF WHITE LIGHT AREA IN AN F-TYPE GROUP WITH
MODERATE MAGNETIC COMPLEXITY. REGION 8649 (S15W16) CONTINUES TO
PRODUCE FREQUENT SMALL FLARES BUT NO SUBSTANTIAL GROWTH WAS
OBSERVED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. REGIONS 8645 AND 8651 WILL LIKELY PRODUCE FURTHER M-CLASS
ACTIVITY WITH AN OUTSIDE CHANCE OF AN X-CLASS EVENT. REGIONS 8647
(S18E11), 8649, AND 8636 (N20W82) HAVE SMALLER POTENTIAL FOR AN
M-CLASS.
IIA. Sammanfattning av geofysisk aktivitet 28-2100Z till 29-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN AT QUIET TO UNSETTLED CONDITIONS FOR DAY ONE.
OCCASIONAL ACTIVE CONDITIONS ARE POSSIBLE ON DAYS TWO AND THREE IN
RESPONSE TO THE M-CLASS/CME EVENTS IN REGION 8649 ON EARLY 28 JUL.
III. Chans för solutbrott från 30 JUL till 01 AUG
| M-klass | 80% | 80% | 80% |
| X-klass | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 29 JUL 202 Prognoserat 30 JUL-01 AUG 200/190/180 90 Day Mean 29 JUL 160
V. Geomagnetiskt A-index
OBSERVED AFR/AP 28 JUL 007/009 ESTIMATED AFR/AP 29 JUL 010/008 PREDICTED AFR/AP 30 JUL-01 AUG 010/010-012/010-005/010
VI. Chanser för geomagnetisk aktivitet från 30 JUL till 01 AUG
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 35% | 25% |
| Små stormförhållanden | 05% | 10% | 05% |
| Svåra stormförhållanden | 01% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 40% | 30% |
| Små stormförhållanden | 10% | 15% | 10% |
| Svåra stormförhållanden | 05% | 10% | 05% |
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