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Tuesday, September 10, 2019

NOAA Propagation Forecast Bulletins


Product: Weekly Highlights and Forecasts
:Issued: 2019 Sep 09 0301 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 02 - 08 September 2019

Solar activity was at very low levels. Region 2748 (N14, L=205, class/area Hsx/020 on 02 Sep) was quiet and stable and decayed to plage on 03 Sep. 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 very high levels on 02-04 Sep and high levels on 05-08 Sep. Electron flux reached a maximum of 87,900 pfu at 04/1835 UTC.

Geomagnetic field activity ranged from quiet to G1 (minor) storm levels on 02 Sep due to effects from a large, recurrent, positive polarity CH HSS. From 03-06 Sep, quiet to active levels were observed as HSS effects continued. Quiet to unsettled levels were observed from 07-08 Sep. Wind speeds began the period near 750 km/s, but slowly decayed to end the period near 400 km/s.

Forecast of Solar and Geomagnetic Activity 09 September - 05 October 2019

Solar activity is expected to be at very low levels.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels from 09-13 Sep, and again from 27 Sep - 06 Oct due to HSS effects. Normal to moderate levels are expected on 14-26 Sep.

Geomagnetic field activity is expected to be at mostly quiet levels on 09-26 Sep. Isolated unsettled periods are possible on 23, 26 and 30 Sep, and 01-03 Oct. G1 (minor) to G2 (moderate) geomagnetic storm levels are likely on 27-29 Sep due to positive polarity CH HSS effects.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 Sep 09 0301 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 2019-09-09
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2019 Sep 09      68           5          2
2019 Sep 10      68           5          2
2019 Sep 11      68           5          2
2019 Sep 12      68           5          2
2019 Sep 13      68           5          2
2019 Sep 14      68           5          2
2019 Sep 15      68           5          2
2019 Sep 16      68           5          2
2019 Sep 17      68           5          2
2019 Sep 18      68           5          2
2019 Sep 19      68           5          2
2019 Sep 20      68           5          2
2019 Sep 21      68           5          2
2019 Sep 22      68           5          2
2019 Sep 23      69           8          3
2019 Sep 24      69           5          2
2019 Sep 25      69           5          2
2019 Sep 26      69          10          3
2019 Sep 27      69          35          6
2019 Sep 28      69          45          6
2019 Sep 29      69          20          5
2019 Sep 30      69          10          4
2019 Oct 01      69           8          3
2019 Oct 02      69          10          4
2019 Oct 03      69           8          3
2019 Oct 04      69           5          2
2019 Oct 05      69           5          2
(NOAA)