lunedì 23 dicembre 2019

Propagation outlook from Boulder

:Product: Weekly Highlights and Forecasts
:Issued: 2019 Dec 23 0449 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
16 - 22 December 2019

Solar activity was very low. No Earth-directed CMEs were observed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 16-18 Dec and reached moderate levels on 19-22 Dec.
The largest flux of the period was 737 pfu observed at 22/1825 UTC.

Geomagnetic field activity ranged from quiet to active levels. Solar
wind parameters were at nominal levels on 16-17 Dec with solar wind
speeds between 330-425 km/s. By early on 18 Dec, total field
increased to a maximum of 12 nT at 18/1015 UTC while solar wind
speed increased to near 550 km/s by midday on 18 Dec as a positive
polarity coronal hole high speed stream (CH HSS) moved into
geoeffective position. By late on 19 Dec, solar wind speed was in
decline and finished the period near 360 km/s. The geomagnetic field
responded with quiet levels on 16-17 Dec and 20-22 Dec and quiet to
active conditions on 18-19 Dec.

Forecast of Solar and Geomagnetic Activity
23 December - 18 January 2020

Solar activity is expected to be at very low levels for the forecast
period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at moderate levels on 23 Dec-05 Jan and 15-18 Jan.
Normal levels are expected on 06-14 Jan.

Geomagnetic field activity is expected to reach unsettled levels on
25-27 Dec and unsettled to active levels on 14-15 Jan due to CH HSS
activity.

:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 Dec 23 0449 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#      27-day Space Weather Outlook Table
#                Issued 2019-12-23
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2019 Dec 23      72           5          2
2019 Dec 24      72           5          2
2019 Dec 25      72           8          3
2019 Dec 26      72           8          3
2019 Dec 27      72           8          3
2019 Dec 28      72           5          2
2019 Dec 29      72           5          2
2019 Dec 30      70           5          2
2019 Dec 31      70           5          2
2020 Jan 01      70           5          2
2020 Jan 02      70           5          2
2020 Jan 03      70           5          2
2020 Jan 04      70           5          2
2020 Jan 05      70           5          2
2020 Jan 06      70           5          2
2020 Jan 07      70           5          2
2020 Jan 08      70           5          2
2020 Jan 09      70           5          2
2020 Jan 10      70           5          2
2020 Jan 11      70           5          2
2020 Jan 12      72           5          2
2020 Jan 13      72           5          2
2020 Jan 14      72          12          4
2020 Jan 15      72          12          4
2020 Jan 16      72           5          2
2020 Jan 17      72           5          2
2020 Jan 18      72           5          2
(SWPC via DXLD)