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Updated: 9/9/10 1:15pm

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Space Weather

Space Weather Observations, Alerts, and Forecast

3-day Report of Solar and Geophysical Activity

Issued Sep 08 22:00 UTC

Solar Activity Forecast:
Solar activity is expected to remain at very low levels for the next three days (09 - 11 September).

Geophysical Activity Forecast:
The geomagnetic field is expected to be at quiet to unsettled levels for day one (09 September) and mostly quiet for days two and three (10 - 11 September).

Space Weather Alerts - Current Month

Updated 2010 September 9 20:18 UTC

GOES-14 eclipse season begins

August 26, 2010: GOES-14 eclipse season begins August 26 and lasts through September. The GOES Solar X-ray Flux plots and lists will have a daily data outage of up to one hour. The longest outage is Sept 14 from 0623 to 0728 UTC.

Latest GOES 14 Solar X-ray Image, link to large image

Latest GOES 14 Solar X-ray Image Image

SWPC GOES SXI Web Page

See Solar Image References for other solar image sites.

SOHO EIT 304

SOHO EIT 284

Mauna Loa Solar Image

The sun is constantly monitored for sun spots and coronal mass ejections. EIT (Extreme ultraviolet Imaging Telescope) images the solar atmosphere at several wavelengths, and therefore, shows solar material at different temperatures. In the images taken at 304 Angstrom the bright material is at 60,000 to 80,000 degrees Kelvin. In those taken at 171 Angstrom, at 1 million degrees. 195 Angstrom images correspond to about 1.5 million Kelvin, 284 Angstrom to 2 million degrees. The hotter the temperature, the higher you look in the solar atmosphere.

CURRENT TIME

(based on your computer's time): UTC..	Local

Solar Cycle Progression

Solar Cycle chart updated using the latest ISES predictions.

Real-Time Solar Wind
10 Hr. Solar Wind Loop

Real-Time Solar Wind data broadcast from NASA's ACE satellite.

The Solar Cycle is observed by counting the frequency and placement of sunspots visible on the Sun. Solar minimum occurred in December, 2008. Solar maximum is expected to occur in May, 2013.

Solar X-ray Flux

This plot shows 3-days of 5-minute solar x-ray flux values measured on the SWPC primary and secondary GOES satellites.

Satellite Environment Plot

The Satellite Environment Plot combines satellite and ground-based data to provide an overview of the current geosynchronous satellite environment.

Northern Hemi Auroral Map

Current Northern hemispheric power input map

Southern Hemi Auroral Map

Current Southern hemispheric power input map

Instruments on board the NOAA Polar-orbiting Operational Environmental Satellite (POES) continually monitor the power flux carried by the protons and electrons that produce aurora in the atmosphere. SWPC has developed a technique that uses the power flux observations obtained during a single pass of the satellite over a polar region (which takes about 25 minutes) to estimate the total power deposited in an entire polar region by these auroral particles. The power input estimate is converted to an auroral activity index that ranges from 1 to 10.

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On September 9, 2010 there were 1144 potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid	Date(UT)	Miss Distance	Mag.	Size
2010 QG2	Sep 3	4.6 LD	24	61 m
2010 RB12	Sep 4	2.5 LD	27	18 m
2010 LY63	Sep 7	56 LD	18	1.2 km
2010 RX30	Sep 8	0.6 LD	27	16 m
2010 RF12	Sep 8	0.2 LD	28	9 m
2009 SH2	Sep 30	7.1 LD	25	45 m
1998 UO1	Oct 1	32.1 LD	17	2.1 km
2005 GE59	Oct 1	77 LD	18	1.1 km
2001 WN5	Oct 10	41.8 LD	18	1.0 km
1999 VO6	Oct 14	34.3 LD	17	1.8 km
1998 TU3	Oct 17	69.1 LD	15	5.3 km
1998 MQ	Oct 23	77.7 LD	17	1.9 km
2007 RU17	Oct 29	40.6 LD	18	1.0 km
2003 UV11	Oct 30	5 LD	19	595 m
3838 Epona	Nov 7	76.8 LD	16	3.4 km
2005 QY151	Nov 16	77.7 LD	18	1.3 km
2008 KT	Nov 23	5.6 LD	28	10 m
2002 EZ16	Nov 30	73.9 LD	18	1.0 km
2000 JH5	Dec 7	47 LD	17	1.5 km
2010 JL33	Dec 9	16.6 LD	18	1.3 km

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

Source: Space Weather.com

NASA Image of the Day

The latest NASA "Image of the Day" image.

On the Move
Thu, 09 Sep 2010 00:00:00 EDT

As if surrounded by a celestial halo, space shuttle Discovery made its way towards the expansive confines of NASA Kennedy Space Center's Vehicle Assembly Building following a move from its processing hangar on Sept. 9, 2010. A metal sling will be carefully connected to the spacecraft and then operators will hoist it from transfer aisle to the high reaches of the 52-story building before lowering it into place beside the external fuel tank and twin solid rocket boosters. Crews then will connect the spacecraft giving the stack its familiar launch day form. Discovery is targeted to liftoff on the 11-day STS-133 mission on Nov. 1 at 4:40 p.m. EDT. Image Credit: Jen Scheer