Product: Weekly Highlights and Forecasts
:Issued: 2019 May 06 0135 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 29 April - 05 May 2019
Solar activity was at very low to low levels. New Region 2740 (N08, L=307, class/area Dho/280 on 05 May) produced a pair of C-class flares, the largest a C2/Sf observed at 04/2243 UTC. No Earth-directed CMEs were observed in available coronograph imagery.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels on 29 Apr - 01 May and reached high levels on 02-05 May. The maximum electron flux was 6,160 pfu observed at 03/1930 UTC.
Geomagnetic field activity ranged from quiet to active levels through the period. Quiet levels were observed on 29-30 Apr under a nominal solar wind regime. Late on 01 May through midday on 02 May, unsettled to active levels were observed under an enhanced solar wind environment due to influence from a negative polarity CH HSS.
During this time frame, wind speeds peaked at near 565 km/s, total field reached 11 nT, while the Bz component reached a maximum southward extent of -10 nT. On 03-04 May, field conditions were at quiet to unsettled levels as negative polarity CH HSS influence continued. By 05 May, the quiet conditions were observed under waning CH HSS influence.
Forecast of Solar and Geomagnetic Activity 06 May - 01 June 2019
Solar activity is expected to be at very low levels, with low levels likely through 20 May due to some activity from Region 2740 and the return of old Region 2739 (N06, L=266). Very low conditions are
anticipated after 20 May.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at moderate to high levels on 06-12 May, and again on 29 May - 01 Jun, due to CH HSS influence. Normal to moderate levels are expected on 13-28 May.
Geomagnetic field activity is expected to range from quiet to active levels. Unsettled to active conditions are expected on 06-07 May and again on 28-31 May. Both enhancements in geomagnetic activity are due to recurrent, negativity polarity CH HSSs. The remainder of the outlook period is expected to be at quiet levels.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 May 06 0135 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
# 27-day Space Weather Outlook Table
# Issued 2019-05-06
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2019 May 06 76 12 4
2019 May 07 76 14 4
2019 May 08 76 8 3
2019 May 09 76 8 3
2019 May 10 76 8 3
2019 May 11 76 5 2
2019 May 12 76 5 2
2019 May 13 76 5 2
2019 May 14 76 5 2
2019 May 15 76 5 2
2019 May 16 76 5 2
2019 May 17 76 5 2
2019 May 18 72 5 2
2019 May 19 72 5 2
2019 May 20 72 8 3
2019 May 21 68 5 2
2019 May 22 68 5 2
2019 May 23 67 5 2
2019 May 24 67 5 2
2019 May 25 67 5 2
2019 May 26 67 5 2
2019 May 27 69 5 2
2019 May 28 68 10 3
2019 May 29 69 12 4
2019 May 30 70 8 3
2019 May 31 72 10 3
2019 Jun 01 75 5 2
(NOAA)