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[Propagation+Space Weather] Today's Space Weather Forecast Discussion on

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Subject: [Propagation+Space Weather] Today's Space Weather Forecast Discussion on
From: nw7us@sunspotwatch.com
Reply-to: Practical radio-wave propagation and space weather <propagation@contesting.com>
Date: Tue, 24 Nov 2015 20:07:05 +0000
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Here is the current forecast discussion on space weather and geophysical activity, issued 2015 Nov 24 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at low levels. The largest flare of the period was a C1 at 23/1213 UTC from a region rotating around the NE limb. Region 2457 (N11E16, Dsi/beta-gamma) was the most complex region on the disk. Minor decay was observed in its trailer and intermediate spots but it maintained a beta-gamma classification. Region 2458 (N09E50, Dao/bata) underwent separation and areal growth in its leader spot and rudimentary penumbral growth around the trailer spot. Region 2454 (N14W74, Cao/beta) decreased in number of spots and areal coverage while Region 2456 (N07W81, Hrx/alpha) decayed almost entirely.

No Earth-directed coronal mass ejections (CMEs) were observed in available coronagraph imagery.

Forecast: Solar activity is likely to be at low levels with a slight chance for M-class flares (R1-R2 (Minor-Moderate) Radio Blackouts) for days one through three (24-26 Nov).

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux remained at normal to moderate levels while the greater than 10 MeV proton flux remained at background levels throughout the period.

Forecast: The greater than 2 MeV electron flux is expected to remain at normal to moderate levels over the next three days (24-26 Nov). The greater than 10 MeV proton flux is expected to persist at background levels throughout the forecast period.

Solar Wind

24 hr Summary: The solar wind environment at the ACE spacecraft was nominal. Bz remained mostly positive or neutral, never dipping below -3 nT. Bt was below 5 nT, wind speed ranged between 280 and 340 km/s, and Phi was negative. Forecast: Solar wind parameters are expected to remain at background levels on day one (24 Nov) before becoming enhanced early on days two through three (25-26 Nov) with the onset of a positive polarity coronal hole high speed stream (CH HSS).

Geospace

24 hr Summary: The geomagnetic field was quiet under a nominal solar wind regime.

Forecast: The geomagnetic field is expected to remain at quiet levels on day one (24 Nov), with quiet to active levels expected on days two and three (25-26 Nov) with the onset of a positive polarity CH HSS.

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Today's Space Weather Forecast Discussion - 2015 Nov 24 20:07 UTC

Live data: SunSpotWatch.com

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