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Solar activity

UTC

Friday, July 19th 2019, 07:30:00 UTC

Regions with Sunspots

Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z

Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.

Solar Activity Forecast

Solar activity is expected to be very low on days one, two, and three (19 Jul, 20 Jul, 21 Jul).

24 hr48 hr72 hr
Event probabilities 19 Jul-21 Jul
Class M01 %01 %01 %
Class X01 %01 %01 %
Proton01 %01 %01 %

PCAF: green

Geophysical Activity Summary 17/2100Z to 18/2100Z

The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 420 km/s at 18/0306Z. Total IMF reached 6 nT at 18/1528Z. The maximum southward component of Bz reached -3 nT at 18/1828Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1918 pfu.

Geophysical Activity Forecast

The geomagnetic field is expected to be at quiet levels on days one, two, and three (19 Jul, 20 Jul, 21 Jul).

Geomagnetic Activity Probabilities 19 Jul-21 Jul

24 hr48 hr72 hr
Middle Latitudes
Active10 %15 %10 %
Minor Storm05 %01 %01 %
Major-severe storm01 %01 %01 %
24 hr48 hr72 hr
High Latitudes
Active15 %15 %15 %
Minor Storm20 %20 %20 %
Major-severe storm20 %15 %15 %

Space Weather Alerts Issued in the last 24 hours

CONTINUED ALERTSN 2957
Electron 2MeV Integral Flux exceeded 1000pfu

Issue Time: 2019 Jul 18 1219 UTC

Continuation of Serial Number2956
Begin Time2019 Jul 10 1230 UTC
Yesterday Maximum 2MeV Flux1690 pfu
Potential ImpactsSatellite systems may experience significant charging resulting in increased risk to satellite systems.

3-days of 5-minute solar x-ray flux values (GOES-15)

Manually reviewed and edited by the duty forecaster

BeginMaxEndXrayRegion

Sources: NOAA's Space Weather Prediction Center (SWPC), Joint Science Operations Center (JSOC)

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