Viewing archive of Tuesday, 30 April 2024

Solar activity report

Report of Solar-Geophysical Activity 2024 Apr 30 2235 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 120 Issued at 2200Z on 30 Apr 2024

IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z

Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 30/0114Z from Region 3654 (S07W63). There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate with a slight chance for an X-class flare on day one (01 May) and expected to be low with a chance for M-class flares and a slight chance for an X-class flare on day two (02 May) and expected to be low with a chance for M-class flares on day three (03 May).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 449 km/s at 29/2235Z. Total IMF reached 10 nT at 30/2040Z. The maximum southward component of Bz reached -8 nT at 30/2033Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on day one (01 May) and unsettled to active levels on days two and three (02 May, 03 May).
III. Event Probabilities 01 May to 03 May
Class M55%45%35%
Class X10%10%05%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       30 Apr 130
  Predicted   01 May-03 May 140/136/132
  90 Day Mean        30 Apr 163

V. Geomagnetic A Indices
  Observed Afr/Ap 29 Apr  007/006
  Estimated     Afr/Ap 30 Apr  007/007
  Predicted    Afr/Ap 01 May-03 May  014/018-016/020-015/018

VI. Geomagnetic Activity Probabilities 01 May to 03 May
A. Middle Latitudes
Active20%30%30%
Minor storm10%10%10%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%25%25%
Major-severe storm30%40%40%

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 23:35 UTC

Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future

Nuuk
Rovaniemi, Sodankylä
Reykjavik
Tromsø
Murmansk
Kiruna

Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Tórshavn
Oulu, Utsjoki
Kirkenes, Trondheim
Arkhangelsk
Luleå, Umeå

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Kuopio
Bergen
Sundsvall

Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future

Tampere
Petrozavodsk
The strength of the interplanetary magnetic field is high (24.31nT), the direction is slightly South (-6.92nT).

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