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01. X9.3
02. X8.2
03. X6.9
04. X5.4
05. X4.9
06. X3.3
07. X3.2
08. X3.1
09. X2.8
10. X2.7

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The Sun Today : Updated December 18, 2018

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SOLAR FLUX  |  SOLAR REPORTS  |  ALERTS

 Data provided by N0NBH
Solar Flare Risk
M-Class: 01%
X-Class: 01%

Active Watches
Geomag. Storm    NO
Radiation Storm    NO

Solar X-Rays:
Status
Geomagnetic Field:
Status

3-Day Geomagnetic Forecast [Details]
December 18
December 19
December 20
2-3 (G0)
Max Kp
3 (G0)
Max Kp
2 (G0)
Max Kp
Prob-M 01%
Prob-H 15%
Prob-M 10%
Prob-H 25%
Prob-M 05%
Prob-H 20%

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  AVERAGES | NOV. Solar Flux 68.9 | Sunspots 7.3 | Flare Max -

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[GOES-13] SXI

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[Lasco] C2 >>
Latest Space Weather News and Updates
December 8, 2018 @ 15:30 UTC
Coronal Hole Stream / Aurora Watch
The anticipated coronal hole stream is now moving past Earth near 600 km/s. Isolated periods of enhanced geomagnetic activity will be possible at higher latitudes. Sky watchers should be alert for visible aurora once dark outside.

December 5, 2018 @ 21:00 UTC
New Sunspot
A rare sight during the descent into solar minimum, a new sunspot. Region 2729, a member of weakening Solar Cycle 24, formed fairly quickly in the southwest quadrant and is currently producing very minor B-Class solar flares. Although noteworthy solar flares are not expected, the sunspot should be monitored during the next 24 hours. Image below by SDO/HMI.

December 4, 2018 @ 01:45 UTC
Another Chance for Storming
The current coronal hole stream failed to generate a geomagnetic storm and only produced slightly enhanced activity at higher latitudes. A larger coronal hole (#54) will come into play this weekend (Dec 8 and 9) and should be the source of a high speed solar wind stream. Another chance for minor (G1) storming possible.

It should be noted that a weak coronal mass ejection (CME) observed on November 30th is predicted to pass Earth on December 5th and contribute to further enhancements. I personally don't think this will materialize, but perhaps I will be wrong. More updates will be added whenever necessary.

December 1, 2018 @ 00:20 UTC
Geomagnetic Storm Watch (UPDATED)
A coronal hole stream is expected to reach Earth on Saturday. Minor (G1) geomagnetic storming ispredicted for the next 24-48 hours once the solar wind stream reaches our planet. Aurora sky watchers should be alert this weekend.

UPDATE: The solar wind speed is slowly approaching 400 km/s on Saturday. A further increase will be likely during the next 12 hours.

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2018 Dec 01 1725 UTC
Valid To: 2018 Dec 02 0600 UTC
Warning Condition: Onset


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REPORTS AND FORECAST | 30 Day DSD | Data Warehouse


Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Weather Prediction Center.
UPDATED 2018 December 18 0030 UTC

.24 hr Summary...
Solar activity remained very low and the visible disk was spotless. No
Earth-directed CMEs were observed in available coronagraph imagery.

.Forecast...
Solar activity is expected to be very low all three days (18-20 Dec) due
to the lack of spotted active regions.

[Report of Solar-Geophysical Activity]

NOAA SUNSPOT SUMMARY | SolarHam Sunspot Summary

A - Alpha (single polarity spot).
B - Beta (bipolar spot configuration).
G - Gamma (atypical mixture of polarities).
BG - Beta-Gamma (mixture of polarities in a dominantly bipolar configuration).
D - Delta (opposite polarity umbrae within single penumbra).
BD - Beta with a Delta configuration.
BGD - Beta-Gamma with a Delta configuration.

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