Viewing archive of Friday, 5 April 2019

Solar activity report

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.
Report of Solar-Geophysical Activity 2019 Apr 05 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 95 Issued at 2200Z on 05 Apr 2019

IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low on days one, two, and three (06 Apr, 07 Apr, 08 Apr).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 533 km/s at 05/1154Z. Total IMF reached 6 nT at 05/0732Z. The maximum southward component of Bz reached -5 nT at 05/0519Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 8559 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (06 Apr, 08 Apr) and quiet to active levels on day two (07 Apr).
III. Event Probabilities 06 Apr to 08 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       05 Apr 072
  Predicted   06 Apr-08 Apr 072/072/072
  90 Day Mean        05 Apr 071

V. Geomagnetic A Indices
  Observed Afr/Ap 04 Apr  008/011
  Estimated     Afr/Ap 05 Apr  011/013
  Predicted    Afr/Ap 06 Apr-08 Apr  007/010-010/012-009/010

VI. Geomagnetic Activity Probabilities 06 Apr to 08 Apr
A. Middle Latitudes
Active20%30%20%
Minor storm05%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%15%20%
Minor storm25%30%25%
Major-severe storm25%30%25%

All times in UTC

<< Go to daily overview page

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

98%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/07/16X2
Last M-flare2024/07/24M3.6
Last geomagnetic storm2024/06/28Kp8- (G4)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
June 2024164.2 -7.5
July 2024185.7 +21.5
Last 30 days181 +30.7

This day in history*

Solar flares
11999M4.84
22004M3.63
32024M3.6
41999M3.07
52016M2.91
DstG
11982-75G3
21983-74G2
31981-67G1
41972-57G2
51974-55G2
*since 1994

Social networks