In this video, we delve into the latest updates on Mount St. Helens, where a 250% increase in seismic activity has been detected. Since February 1st, nearly 500 earthquakes have shaken the region, signaling potential changes beneath the surface. We’ll revisit the 1980 eruption, one of the most destructive volcanic events in U.S. history, and explore how seismic patterns could hint at future volcanic activity. Is this recent surge a sign of an impending eruption, or just normal volcanic behavior? Stick around as we uncover the science behind magma recharge and the ongoing monitoring efforts. Don’t forget to subscribe for more exciting updates and insights!
00:00- INTRO 00:53- Future Cracks: What Lies Ahead for Mount St. Helens 01:43- Mount St. Helens: A Volcanic Awakening in 1980 02:52- Beneath the Surface: The Volcanic Tension Rising 03:50- Pyroclastic Flows: A Serious Hazard in Volcanic Eruptions 04:43- Outcome from Lateral Blast 05:25- Later Flows 05:51- The Elements Within: Exploring Volcanic Chemical Composition 06:54- The Aftermath of How Mudslides Transformed the Landscape 07:54- Deadliest Volcanic Event and its Outcome 08:54- Evaluating Damage and Cleanup Challenge due to Ash 09:43- Consequences Mount ST. Helens had to Bear 10:28- Scientists Track Magma Recharge Under St. Helens 11;28- OUTRO
Mount St Helens seems to be stirring
awake again with the US Geological
Survey USGS noting a recent uptick in
seismic activity in just the past week
earthquakes were recorded to a total 498
since February 1st the biggest Quake
last week hit a magnitude of
0.6 while the most significant since
February reached
2.0 curiously these Tremors occurred at
an average depth of 2.7 Mi beneath the
crater a bit shallower than the previous
average of 3.9 mil horrifying isn't it
since July 15th 2023 over 400 Quakes
have rattled the region what could this
mean for the future of Mount St Helens
with no changes detected in ground
deformation or gas emissions should we
be concerned or is this simply Nature's
Way of reminding us of its power future
cracks what lies ahead from Mount St
Helen's research has indicated that
short-term Earth Quake activity is
typical at Mount St Helens and is part
of its normal behavior notably the
recent surge in size mity is the most
significant increase since the last
eruption ended in 2008 however even
larger earthquake sequences in the late
80s and '90s didn't lead to eruptions
these small Quakes occurring deep within
the volcano are often associated with
the pressurization of the magma
transport system
this phenomenon known as recharge
involves fresh magma entering the upper
Reservoir creating stress and triggering
earthquakes that can last for years
without resulting in an eruption Mount
St Helens a volcanic Awakening in 1980
on March 27th 1980 Mount St Helens in
Washington state erupted kicking off a
series of explosive volcanic events that
would lead to one of the US s deadliest
eruptions the peak explosion occurred on
May 18th at 8:32 a.m. registering a
volcanic explosivity index of five
marking the most significant eruption
since Lassen Peak in 1915 this
disastrous event followed 2 months of
seismic activity and steam eruptions
caused by magma buildup leading to a
devastating Landslide and explosive
blast the eruption generated an ash
plume reaching 880,000 ft impacting 11
states and parts of Canada and resulting
in 57 fatalities including notable
individuals with over $1 billion doll in
Damages it reshaped the region and
created the Mount St Helen's National
volcanic Monument serving as a reminder
of Nature's formidable power beneath the
surface the volcanic tension Rising
after being dormant since the 1840s m M
St Helens erupted with a series of
earthquakes beginning March 15th 1980
culminating in a significant 4.2
magnitude Quake on March 20th this
seismic activity led to the first steam
driven eruption on March 27th sending
Ash 7,000 ft into the air by late April
the North Face had bulged dangerously
prompting warnings of a potential
catastrophic eruption on May 18th a
magnitude 5.1 earthquake triggered the
largest recorded sub aial Landslide
resulting in a massive eruption that
sent Ash 880,000 ft into the atmosphere
devastated the surrounding area claimed
57 lives and caused over $1 billion in
Damages pyroclastic flows a serious
hazard in volcanic eruptions the
landslide at Mount St Helens in 1980
exposed a magma to lower pressure
triggering an explosive release of gas
and high pressure steam within seconds
the northward explosion sent a
pyroclastic flow of volcanic gases Ash
and pmus racing down the mountain
initially traveling at
220 mph the flow accelerated to 670 mph
possibly surpassing the speed of sound
this blast devastated an area 23 3 m
wide and 19 M long flattening 230 s Mi
of forest the superheated flow also
flashed water into steam causing a
secondary explosion heard as far as
British Columbia outcome from lateral
blast in the direct blast zone of Mount
St Helens trees were snapped like twigs
and the Earth was stripped bare and
scorched the near supersonic blast
packed with volcanic debris devastated
areas of up to 19 Mi away the blast zone
was divided into three areas the direct
Blast Zone where everything was
destroyed the directed Blast Zone where
trees were flattened in rows like grass
and the seared Zone where trees stood
but were charred tragically 57 people
lost their lives many to Suffocation or
burns from the intense heat later flows
after the landslide fresh magmatic
debris created pyroclastic flows that
formed fan-like patterns during the May
18th eruption at least 17 flows occurred
totaling about
0.05 cubic miles even Weeks Later
deposits remained extremely hot fueling
steam blast eruptions that continued for
months with one recorded on May 16th
1981 the elements within exploring
volcanic chemical composition the ash
from Mount St Helens is composed of
roughly 65% silicon dioxide 18% aluminum
oxide 5% feric oxide 4% calcium oxide 4%
sodium oxide and 2% magnesium oxide
Trace elements include
0.05
0.09% chlorine
0.02
0.03% Florine and 0.0 09 0.3% sulfur the
index of refraction of the ash which
indicates how light interacts with it
has a real part ranging from 1.5 to 1.6
for visible light the ash settled in
three layers the bottom layer is dark
gray with older rocks and crystals the
middle consists of glass shards and pmus
and the top layer contains very fine
particles the aftermath of how mudslides
transform the landscape the eruption
melted nearly all of mountain St Helen's
glaciers and snow triggering massive
lahars volcanic mud flows that impacted
three of the mountains four stream
Drainage Systems starting as early as
8:50 a.m. these mud flows race down at
speeds of up to 90
mph 140 km perh before slowing to about
3 mph 4.8 km perh in wider River areas
they mixed with tefra and created larger
lahars flooding in the toutle river and
its Forks by 1: p.m. a 12T High 4 a.m
wall of Muddy Water was reported and the
flow eventually added around 3, 900,000
cubic yards 3 million cubic M of debris
to the Columbia River temporarily
closing a busy shipping channel and
costing Portland an estimated $$
million deadliest volcanic event and its
outcome the May 18th
1980 eruption was the deadliest and most
destructive volcanic event in the
contiguous United States the blast
directly killed 57 people and
obliterated 200 homes 47 Bridges 15 Mi
of Railways and 185 Mi of Highways
additionally two individuals died
invisibility related accidents and two
more suffered fatal heart attacks from
shoveling as President Jimmy Carter who
surveyed the damage remarked it
resembled a moonscape over 1 cubic mile
of material was ejected with a quarter
being fresh lava the eruption caused
extensive ecological damage killing
wildlife and destroying crops while
releasing energy equivalent to
1,600 hirosima bombs evaluating damage
and cleanup challenge due to Ash the ash
Falls from from the eruption caused
significant disruptions in
transportation sewage disposal and water
treatment visibility dropped leading to
the closure of Highways including a week
and a half closure of Interstate 90
airports in Eastern Washington also shut
down cancelling over a thousand
commercial flights communities fac the
Monumental task of removing about 2.4
million cubic yards of Ash costing 2.2
$2 million and taking 10 weeks in Yakama
cities utilized old quaries and
landfills for disposal while Portland's
mayor threatened fines for businesses
that neglected Ash removal from their
properties consequences Mount CEST
Helens had to Bear the Mount St Helen
eruption caused an estimated $1.1
billion in Damages $3.4 billion today
leading Congress to allocate 951 $1
million for disaster relief mainly for
the small business administration US
Army Corp House of Engineers and FEMA
unemployment surged tenfold but
stabilized with Timber salvaging and Ash
cleanup efforts while residents
experienced emotional stress most
remained in the area initially tourism
suffered but Mount St Helens regained
its appeal resulting in reopened visitor
centers and heightened interest in the
volcano's recovery scientists track
magma recharge under St Helens since the
1980 eruption Mount St Helens has
remained active with five more explosive
events in 1980 and at least 21 eruptions
by early
1990 continuing until 2008 the May 25th
eruption sent Ash 9 mil into the
atmosphere impacting Western Washington
and Oregon later eruptions in June and
July reached 10 m M High while by 1987 a
new dome had grown to over 3,000 ft wide
currently around 350 earthquakes since
February indicate possible magma
recharge though experts when this
doesn't ensure an eruption the USGS
closely monitors the volcano what do you
think the future holds from Mount St
Helens are we on the verge of another
eruption did you enjoy this expl ation
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