Official Space Weather Advisory issued by NOAA Space Weather Prediction Center
Boulder, Colorado, USA

SPACE WEATHER ADVISORY OUTLOOK #21-47
2021 October 31 at 11:26 p.m. MDT (2021 November 1 0526 UTC)

**** SPACE WEATHER OUTLOOK ****

Summary For October 25-31

R1 (Minor) Radio Blackouts were observed on 26, 28, and 29 Oct with R3 (Strong) levels observed on 28 Oct due to flare activity from sunspot Regions 2887 and 2891.

S1 (Minor) Solar Radiation Storm levels were observed on 28-30 Oct associated with the X1 flare on 28 Oct from Region 2887.

G1 (Minor) Geomagnetic Storm levels were observed on 31 Oct due to the arrival of the 28 Nov CME.

Outlook For November 1-7

There is a chance for R1-R2 (Minor-Moderate) Radio Blackouts on 01-07 Nov due to potential flare activity from Regions 2887 and 2891.

Data used to provide space weather services are contributed by NOAA,
USAF, NASA, NSF, USGS, the International Space Environment Services 
and other observatories, universities, and institutions. More 
information is available at SWPC's Web site http://swpc.noaa.gov

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