Viewing archive of lördag, 18 oktober 2003
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 2003 Oct 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 291 publicerat klockan 2200Z på 18 Oct 2003IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z Solar activity was low. A noticeable increase in flare
activity and background levels was observed during the past 24
hours. Most of this increase was due to newly numbered Region 484
(N05E68) which appears to be a compact D-type group with 240
millionths of area. The region produced numerous C-class flares: the
largest was a C4.9 at 1653 UTC. A partial halo CME was observed off
the southeast limb, beginning at 1554 UTC. The plane of sky velocity
was estimated to be about 700 km/s. Region 483 (S08E55) was assigned
today but so far is a small stable sunspot group. The other active
regions on the disk showed occasional brightenings but were mostly
quiet and stable.
IB. Prognos för solaktivitet
Solar activity is expected to be low
for the next three days with Region 484 as the dominant source of
activity. There is a slight chance for an isolated M-class event
during the next three days.
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
The geomagnetic field ranged from unsettled to minor storm levels as
the high speed solar wind stream continues. The solar wind speed did
not show any trend today and the average velocity was around 540
km/s. The interplanetary magnetic field Z-component fluctuated
between -7 nT and + 5 nT but was weakly negative on average. The
greater than 2 MeV electron fluxes were at high levels during the
past 24 hours.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be unsettled to active for the next 24 hours. There
should be a gradual decline in activity sometime tomorrow and
conditions should be mostly unsettled for the second day. An
increase to mostly active with some minor storm periods is expected
on the third day as a new coronal hole rotates into favorable
position at that time. Today's CME is not expected to directly
impact Earth but might result in a glancing blow that could provide
a boost to activity on the third day.
III. Chans för solutbrott från 19 Oct till 21 Oct
| M-klass | 20% | 20% | 20% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 18 Oct 109 Prognoserat 19 Oct-21 Oct 115/115/120 90 Day Mean 18 Oct 116
V. Geomagnetiskt A-index
Observerad Afr/Ap 17 Oct 020/031 Förväntat Afr/Ap 18 Oct 017/025 Prognoserat Afr/Ap 19 Oct-21 Oct 012/020-012/015-020/030
VI. Chanser för geomagnetisk aktivitet från 19 Oct till 21 Oct
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 30% | 30% |
| Små stormförhållanden | 25% | 25% | 40% |
| Svåra stormförhållanden | 05% | 05% | 15% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 30% | 25% |
| Små stormförhållanden | 25% | 25% | 30% |
| Svåra stormförhållanden | 05% | 05% | 35% |
Senaste nytt
måndag, 22 april 2024
Lot's of sunspots! Big chance for major flare activity?
lördag, 23 mars 2024
X1.1 solar flare with earth-directed CME
onsdag, 20 mars 2024
Sunspot region 3615, G1 watch
Senaste inläggen
AR 3637, 3638, 3643 76Space Weather Memes 338Unproven theories 340Filaments and prominences 55Growth of Cycle 25 433
Fler foruminläggStöd SpaceWeatherLive.com!
För att vara tillgängliga vid stora norrskensutbrott måsta vi ha kraftiga servrar som kan hantera alla besökare. Donera och stöd vårt projekt, så att vi kan finnas online även under stora stormar!
Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/24 | M1.4 |
| Senaste geomagnetiska stormen | 2024/04/19 | Kp7 (G3) |
| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
| Månadsvis faktiskt antal solfläckar | |
|---|---|
| mars 2024 | 104.9 -19.8 |
| Last 30 days | 129.9 +24.3 |