Viewing archive of Tuesday, 19 March 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 Mar 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 78 Issued at 2200Z on 19 Mar 2019IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z
Solar activity has been at very low levels for the past 24
hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (20
Mar, 21 Mar, 22 Mar).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 417 km/s at 19/2029Z. Total IMF reached 7
nT at 19/1525Z. The maximum southward component of Bz reached -5 nT at
19/1401Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1367 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (20 Mar) and quiet levels
on days two and three (21 Mar, 22 Mar).
III. Event Probabilities 20 Mar to 22 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Mar 070 Predicted 20 Mar-22 Mar 070/070/070 90 Day Mean 19 Mar 071
V. Geomagnetic A Indices
Observed Afr/Ap 18 Mar 002/002 Estimated Afr/Ap 19 Mar 006/007 Predicted Afr/Ap 20 Mar-22 Mar 009/010-006/005-005/005
VI. Geomagnetic Activity Probabilities 20 Mar to 22 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 20% |
| Major-severe storm | 30% | 15% | 15% |
All times in UTC
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