Visa arkiv av lördag 21 april 2012

Solaktivitetsrapport

Rapport för sol- och geofysisk aktivitet 2012 Apr 21 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 112 publicerat klockan 2200Z på 21 Apr 2012

IA. Analys av solfläcksgrupper och solaktivitet från 20-2100Z till 21-2100Z

Solar activity was low. Regions 1460 (N16W27 - Dkc/beta) and 1465 (S17E27 - Dso/beta) each produced a low-level C-class flare. Region 1460 showed minor interior spot growth and some mixed polarities in its trailer portion. Minor interior spot growth also occurred in Region 1465 as well as penumbral growth in its trailer. Region 1459 (S14W13 - Eac/beta) showed penumbral growth in its interior portion and maintained a simple beta magnetic configuration. No Earth-directed CMEs were observed during the period. No new regions were numbered.
IB. Prognos för solaktivitet
Solar activity is expected to be low during the period (22 - 24 April) with a chance for an isolated M-class flare.
IIA. Sammanfattning av geofysisk aktivitet 20-2100Z till 21-2100Z
Geomagnetic field activity was at quiet levels until around 21/1900Z, then increased to quiet to unsettled levels. The increase was associated with a weak interplanetary shock (IPS) passage, detected at ACE at around 21/1611Z, and followed by a weak geomagnetic field response at around 21/1712Z (no Sudden Geomagnetic Impulse observed). ACE solar wind data showed a change to mostly southward IMF Bz following the IPS passage (maximum deflections to -8 nT) as well as a gradual increase in IMF Bt (peaks to 9 nT). A minor increase in wind speeds also followed the IPS passage. It is likely the CME passage was associated with the partial-halo CME observed on 18 April.
IIB. Prognos för geofysisk aktivitet
Geomagnetic field activity is expected to be at quiet to unsettled levels during the period (22 - 24 April) with a chance for active levels. Weak CME-passage effects are expected during 22 - 23 April (another CME is expected to arrive late on 22 April). A recurrent coronal hole high-speed stream is expected to become geoeffective on 24 April.
III. Chans för solutbrott från 22 Apr till 24 Apr
M-klass30%30%30%
X-klass01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observerad       21 Apr 149
  Prognoserat   22 Apr-24 Apr  150/150/145
  90 Day Mean        21 Apr 112
V. Geomagnetiskt A-index
  Observerad Afr/Ap 20 Apr  007/008
  Förväntat     Afr/Ap 21 Apr  006/007
  Prognoserat    Afr/Ap 22 Apr-24 Apr  011/012-010/010-010/010
VI. Chanser för geomagnetisk aktivitet från 22 Apr till 24 Apr
A. Medelhöga breddgrader
Aktivt20%20%25%
Små stormförhållanden10%10%15%
Svåra stormförhållanden01%01%01%
B. Höga breddgrader
Aktivt25%25%35%
Små stormförhållanden15%15%25%
Svåra stormförhållanden05%05%10%

Gå till översikt idag

Senaste nytt

Stöd 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!

100%

Rymdvädersfakta

Senaste X-utbrottet:10/09/2017X8.2
Senaste M-utbrottet:20/10/2017M1.0
Senaste geomagnetiska stormen:26/10/2019Kp5 (G1)
Dagar utan solfläckar i 2019:263
Dagar utan solfläckar just nu:37

I dag i historien*

Solutbrott
12014C8.6
22014C8.1
32001C6.8
42001C6.3
52014C6.2
ApG
1200329G1
2201624G1
3200018
4201414
5199914
*sedan 1994

Sociala medier