|
  SPACE WEATHER
Current
Conditions
Solar Wind
velocity:
km/s
density:
protons/cm3
More
about these data
Updated: Today at
UT
Meteor Rates
(24 hr max.)
visual: 3 per hr
radio (89 MHz): 25 per hr
More
about these data
Updated: 09 Nov 2000
Sunspot Number: 171
More
about sunspots
Updated:
08
Nov
2000
Daily
Sun:
9 Nov
2000 
The sun is littered with
spots, but none have magnetic fields more complex than beta-class.
Forecasters estimate a 50% chance of M-class
solar flares.
|
Coronal
Holes:
Solar wind gusts from
this coronal hole should arrive at Earth by Sunday. Image credit:
SOHO Extreme Ultraviolet Telescope.
More about coronal holes
 SPACE WEATHER
NOAA
Forecasts
Solar Flares: Probabilities
for a medium-sized (M-class)
or a major (X-class)
solar flare during the next 24/48 hours are tabulated below.
Updated
at 2000 Nov 08 2200 UT
|
FLARE |
24 hr |
48 hr |
|
CLASS M |
50
% |
50
% |
|
CLASS X |
10
% |
10
% |
Geomagnetic Storms: Probabilities
for significant disturbances in Earth's magnetic field are given
for three activity levels: active,
minor storm, severe
storm
Updated
at 2000 Nov 08 2200 UT
Mid-latitudes
|
24 hr |
48 hr |
|
ACTIVE |
20
% |
20
% |
|
MINOR |
05
% |
05
% |
|
SEVERE |
01
% |
01
% |
High latitudes
|
24 hr |
48 hr |
|
ACTIVE |
25
% |
25
% |
|
MINOR |
10
% |
10
% |
|
SEVERE |
05
% |
05
% |
|
What's
Up in Space -- 9
Nov
2000
Subscribe
to Space Weather News!
ONGOING RADIATION
STORM: The
flux of high-energy protons near Earth is now ~100,000 times
greater than normal following a powerful solar
flare
at 2330 GMT (6:30 pm EST) on Nov. 8th.
The effects of
this severe S4-class radiation storm, which
is the 4th largest since 1976, include: HF radio propagation
over Earth's polar regions may fade or black out altogether during
the storm. Earth-orbiting satellites are likely to experience
electronic glitches. Astronauts are safe so long as they avoid
extra-vehicular activities.
 Right: the many streaks and
dots peppering this SOHO coronagraph animation are high-energy
particles striking the spacecraft's CCD camera.
SOHO coronagraphs
also spotted a
bright coronal mass ejection (CME) soon after the solar flare. Although
the eruption was near active region 9218 on the Sun's western
limb, there are hints in the clouded coronagraph images of a
"halo" (Earth-directed) CME. If so, the disturbance
could strike our planet's magnetosphere late Friday or Saturday
and trigger aurora.
FAST MOVING
ASTEROID: On
Nov. 7, 2000, a 250-meter wide asteroid named 2000 UG11 zipped
past our planet just 6.1 times farther away than the Moon. A
series of movies shows how the apparent speed of the asteroid rapidly
increased in the early days of November and then peaked at 29
degrees per day as the space rock made its closest approach to
Earth. Amateur astronomers with 8 inch or larger telescopes can
still spot 2000 UG11 for themselves as it slowly fades this week.
[ephemeris
for observers]
 RECENT AURORA: Geomagnetic storms on
Nov.
3rd and
Nov.
6th triggered
beautiful Northern Lights. (Click on the dates for images.)
METEOR OUTLOOK: The early-November Taurids
take center stage this week as the phase of the Moon becomes
full. November's main event, the Leonids, are just around the
corner. [details] Updated Nov. 3, 2000
WEB
LINKS: NOAA
FORECAST
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Nov. 7, 2000:
Much
Ado about 2000 SG344 -- In 2071 a relic of NASA's
earliest space exploration efforts might return to Earth, if
current estimates are confirmed.
Oct. 26, 2000:
Lunar
Leonids -- On Nov. 17, 2000, the moon will plow
through a stream of debris from comet Tempel-Tuttle.
Oct. 10, 2000:
The
Moonlit Leonids 2000 -- Our planet is heading
for a minefield of cosmic dust streams laid down by periodic
comet Tempel-Tuttle. The result could be a series of meteor outbursts
on Nov. 17 and 18, 2000.
Sept. 28, 2000:
Bright
Planets and Random Meteors --
This week's
new Moon sets a dark stage for a sporadic meteor show featuring
a cast of eye-catching stars and planets.
Sept. 20, 2000:
A
Good Month for Asteroids --
Five Near-Earth
Asteroids flew past our planet during the month of September.
Sept. 13, 2000:
A
Surprising Coronal Mass Ejection
-- A solar
filament collapsed and fell to the surface of the Sun, spawning
a coronal mass ejection that forecasters didn't expect.
Sept. 5, 2000:
Sunbathing
at Solar Max -- NASA scientists say that
solar maximum is now in full swing. Does that mean you're more
likely to suffer a sunburn at the beach? This story reveals the
answer.
Sept. 1, 2000:
A
Close Encounter with a Space Rock
-- A half-kilometer
wide asteroid zooms past Earth barely 12 times farther from our
planet than the Moon.
Aug. 14, 2000: The
Extraordinary Geomagnetic Perseid Meteor Shower -- A
coronal mass ejection hit Earth's magnetosphere just before the
peak of the 2000 Perseid meteor shower.
Aug. 8, 2000: Perseid
Dawn -- Stargazers
could spot as many as 100 Perseid meteors per hour before dawn
on August 12.
MORE SPACE WEATHER HEADLINES |
