NOAA issued a storm watch alert - WATA at 1807UTC - high integral flux alert in effec (15m open)

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Alex Schwarz

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Oct 17, 2018, 2:52:49 PM10/17/18

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Hi Everybody;

Earlier today NOAA’s GOES-15 satellite detected a high integral flux alert. NOAA issued an ALTEF3 alert at 1612UTC (for more details see message blow). The high integral flux enables the 15m and 17m bands to open up briefly.

The new alert is a storm watch and it predicts G1 minor storm for Oct. 19. During the time of the alert is in effect (18-20 of Oct.) the Geomagnetic activity will rise to Kp=4 several times while solar wind from the sun rushes past our planet.

Conditions at the MDSR test station were quiet during the night period, but have picked up since the Integral Flux Alert was issued

The solar flux, which was at 72 has flatted out again and is now sitting at 70. The new double sunspot (2725 and 2726) that was casing all the fuzz has now quiet down and is reseeding to a single quiet solar minimum spot. (see picture below)

Solar X-Ray Imager Image i

Stay tuned!

Current conditions at the MDSR test station:

80m closed S8

40m closed S7

30m open S5

20m open S4

15m open S1

10m closed S1

Watch it live here:

http://users.skynet.be/myspace/mdsr/

All the best and 73;

Alex - VE7DXW

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Space Weather Message Code: WATA20

Serial Number: 841

Issue Time: 2018 Oct 17 1807 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:

Oct 18: None (Below G1) Oct 19: G1 (Minor) Oct 20: None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.

Induced Currents - Weak power grid fluctuations can occur.

Spacecraft - Minor impact on satellite operations possible.

Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Space Weather Message Code: ALTEF3

Serial Number: 2864

Issue Time: 2018 Oct 17 1628 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu

Continuation of Serial Number: 2863

Begin Time: 2018 Oct 16 1610 UTC

Yesterday Maximum 2MeV Flux: 1323 pfu

www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.