Foresthill Weather Foresthill, CA Local Weather Conditions

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Foresthill Advisery text: No Warning

Updated: 3/12/10 8:04am

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Space Weather

Space Weather Observations, Alerts, and Forecast

3-day Report of Solar and Geophysical Activity

Issued Mar 11 22:00 UTC

Solar Activity Forecast:
Solar activity is expected to be very low to low. There is a chance for an isolated C-class flare from Region 1054 or 1055.

Geophysical Activity Forecast:
The geomagnetic field is expected to be quiet for the next two days (12-13 March). An increase to quiet to unsettled is possible on the third day (14 March) due to effects from a recurrent solar sector boundary.

Space Weather Alerts - Current Month

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

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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.