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Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts
:Issued: 2021 Jun 28 0115 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
21 – 27 June 2021

Solar activity was at very low to low levels during the period.
Region 2833 (N23, L=208, class/area Hsx/160 on 21 Jun) produced a
C1/Sf flare observed at 25/1403 UTC. A long duration C3 x-ray event
was observed from around the NE limb at 23/0707 UTC. This event was
accompanied by a Type II radio sweep with an estimated shock
velocity of 724 km/s. Regions 2835 (S18, L=053, class/area Dso/230
on 27 Jun) and 2836 (S27, L=057, class/area Cro/020 on 27 Jun)
produced a few B-class events during the period. No Earth-directed
CMEs were observed in available coronagraph data.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
moderate levels on 22 Jun and 26-27 Jun. High levels were observed
on 21 Jun and 23-25 Jun. A maximum flux of 4,330 pfu was observed at
21/1435 UTC.

Geomagnetic field activity was was at mostly quiet levels with
isolated unsettled periods observed early on 22 Jun, late on 24 Jun
and early on 25 Jun. Solar wind parameters were mostly unremarkable
during the period.

Forecast of Solar and Geomagnetic Activity
28 June – 24 July 2021

Solar activity is expected to be at predominately very low levels
during the outlook period.

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 on 29-30 Jun and 01-06 Jul due to CH
HSS influences. Normal to moderate levels are expected for the
remainder of the outlook period.

Geomagnetic field activity is expected to be at unsettled to active
levels on 30 Jun, 04 Jul, 09-10 Jul and 12-13 Jul due to recurrent
CH HSS influence. Mostly quiet conditions are expected for the
remainder of the outlook period.

:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2021 Jun 28 0115 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 2021-06-28
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2021 Jun 28 88 5 2
2021 Jun 29 90 5 2
2021 Jun 30 90 10 3
2021 Jul 01 90 5 2
2021 Jul 02 92 5 2
2021 Jul 03 92 5 2
2021 Jul 04 92 12 4
2021 Jul 05 92 5 2
2021 Jul 06 90 5 2
2021 Jul 07 85 5 2
2021 Jul 08 85 5 2
2021 Jul 09 85 8 3
2021 Jul 10 85 8 3
2021 Jul 11 85 5 2
2021 Jul 12 82 15 4
2021 Jul 13 82 12 4
2021 Jul 14 82 5 2
2021 Jul 15 80 5 2
2021 Jul 16 80 5 2
2021 Jul 17 80 5 2
2021 Jul 18 80 5 2
2021 Jul 19 82 5 2
2021 Jul 20 85 5 2
2021 Jul 21 85 5 2
2021 Jul 22 85 5 2
2021 Jul 23 85 5 2
2021 Jul 24 85 5 2

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