On September 1st, 1859, a ferocious solar storm took place that impacted much of the planet. This ferocious solar storm is now known as the “Carrington Event”, named after the British astronomer, Richard Carrington, who witnessed the largest solar flare from his own private observatory which caused a major coronal mass ejection (CME) to travel directly toward Earth. Recent studies of solar storms have warned that these type of “Carrington Events” may not be quite as rare as once thought (e.g., Hayakawa et al). Many previous studies leaned heavily on Western Hemisphere accounts, omitting data from the Eastern Hemisphere. A super storm of the same magnitude as the “Carrington Event” in today’s world would very likely have a much more damaging impact than it did in the 19th century potentially causing widespread power outages along with disruptions to navigation, air travel, banking, and all forms of digital communication.
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On September 1st, 1859, a ferocious solar storm took place that impacted much of the planet. This ferocious solar storm is now known as the “Carrington Event”, named after the British astronomer, Richard Carrington, who witnessed the largest solar flare from his own private observatory which caused a major coronal mass ejection (CME) to travel directly toward Earth. Recent studies of solar storms have warned that these type of “Carrington Events” may not be quite as rare as once thought (e.g., Hayakawa et al). Many previous studies leaned heavily on Western Hemisphere accounts, omitting data from the Eastern Hemisphere. A super storm of the same magnitude as the “Carrington Event” in today’s world would very likely have a much more damaging impact than it did in the 19th century potentially causing widespread power outages along with disruptions to navigation, air travel, banking, and all forms of digital communication.
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It was shortly after noon on August 24th in the year 79 A.D. and Mount Vesuvius sent a tall cloud of steam and ash high up into the atmosphere. The ancient Roman town of Pompeii near modern day Naples was soon covered in complete darkness and the thickness of the falling debris increased by about 6 to 8 inches per hour. The rocks which comprised the debris were up to 3 inches in diameter and fell with a speed of up to 100 miles/hour. This first phase of the eruption led to casualties primarily caused by roof collapses. After 12 hours of continuous explosive activity, the second phase of the eruption began and it was characterized by substantial flow of lava down the sloping Mount Vesuvius and this caused additional deaths and destruction. In fact, the eruption of Mount Vesuvius spewed 1.5 million tons of lava per second into Pompeii and surrounding towns. In a short period of time, an estimated 15 to 20 percent of Pompeii’s population died (about two thousand people), the small towns of Herculaneum, Oplonti and Stabiae were destroyed, and Pompeii was changed forever.
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In a movie filled with memorable quotes, one of the shortest and simplest might have been “It’s a Twister!”, but it was part of a tornado scene that is still considered to be a classic more than eight decades later. August 25, 1939 was the official release date of the “Wizard of Oz" which was the first movie to depict an authentic looking tornado using improbable “1930’s style” special effects. Through the decades, this all-time classic has inspired movie-goers and “weather weenies” alike with the scene of a twister lifting Dorothy’s home into the sky over rural Kansas farm land.
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1969 was a remarkable year and will be long remembered as the year when man first walked on the moon, the Miracle Mets shocked the sports world, and the Woodstock Festival took place in upstate New York. It will also be remembered as the year when a major hurricane – Hurricane Camille – struck the United States as a category 5 storm and the second most intense tropical cyclone on record (only the 1935 Labor Day hurricane had a lower central pressure at landfall). Hurricane Camille made landfall in Mississippi and wreaked havoc from the Gulf States to as far inland as the Mid-Atlantic with widespread flooding, record rainfall, and it cost the lives of several hundreds of people along its path of destruction.
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July is now more than half over and there certainly has been plenty of hot weather across the nation; however, this month will certainly have a difficult time matching the extreme and sustained heat of July 1936. In fact, one of the most widespread and destructive heat waves ever recorded in the US took place in the summer of 1936 which fell right in the middle of arguably the hottest and driest decade ever for the nation.
The decade of the 1930’s is renowned for the “Great Depression” and the “Dust Bowl”, both of which caused calamitous human suffering in this country. Not only were huge numbers of crops destroyed by the heat and lack of moisture in the “Dust Bowl” era, but thousands of lives were lost as a result of the heat, drought and economic hardship. This extreme heat wave was particularly deadly in high population areas where air conditioning was still in the early stages of development. The heat wave experienced in 1936 began in late June, reached a peak in July, and didn’t really come to an end until September. Many of the all-time high temperature records that were set in the 1930’s in numerous cities and states still stand today.
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The high temperatures this past week in Death Valley’s “Furnace Creek” location (formerly known as Greenland Ranch) have consistently been between 125 °F and 130 °F, but this is still short of the all-time record there that occurred way back in 1913. On July 10th, 1913, the weather observer at Greenland Ranch in Death Valley recorded a high temperature of 134 °F. One hundred and eleven years later, this is still the highest air temperature ever reliably recorded on Earth. In addition to this all-time and worldwide high temperature record, the year of 1913 produced numerous other extreme weather events.
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With thousands of lives on the line, there is no doubt that the weather forecast made for the D-Day invasion in Normandy, France during World War II was the most important of all-time and one of the most difficult as well given the lack of sophisticated forecasting tools that we enjoy in today’s world. The first satellite image was still nearly sixteen years away (TIROS on April 1, 1960) and reliable computer forecast models were still decades away. This Thursday, June 6th, marks the 80th anniversary of the D-Day invasion and the weather forecast for that historic event makes for quite an interesting story in what turned out to be a pivotal moment in world history. Years of detailed planning went into the D-Day invasion on June 6, 1944, but success hinged on one element that no military commander could control — the weather. Defying his colleagues, Captain James Martin Stagg advised General Dwight “Ike” Eisenhower to postpone the invasion of Normandy by one day from June 5th to June 6th because of uncertain weather conditions in a weather forecast that changed the course of World War II and altered world history.
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Interesting…seeing a pattern here with powerful solar storms that have taken place during the month of May. Earlier this month, one of the strongest solar storms in many years occurred generating the northern lights in such unusual southern latitudes as Hawaii, Puerto Rico, and Mexico. Additionally, I posted an article last week about what was arguably the most powerful solar storm of the 20th Century which also took place during the month of May (13th-15th) during the year 1921. Today’s posting is about another powerful solar storm that took place during the month of May - this time in the year 1967 - and it almost caused a nuclear confrontation between the two superpowers at the time…the US and Soviet Union.
It was during the height of the Cold War and a powerful solar storm could have led to a disastrous military conflict between the US and Soviet Union if not for the early efforts of the US Air Force to monitor solar activity. On May 23rd, 1967, a solar storm took place that was so powerful, it jammed radar and radio communications in polar regions and the US Air Force actually began to prepare aircraft for war thinking the nation’s surveillance radars were being jammed by the Soviet Union. Fortunately, space weather forecasters in the military suspected there might be another cause and they relayed information about the possibility that a solar storm could have been the reason for the disrupted radar and radio communications. As it turned out, this information was enough to keep the planes on the ground and the US avoided a potential nuclear weapon exchange with the Soviet Union.
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One of the most intense solar storms in recent years produced northern lights this past weekend much farther south than usual including in tropical regions such as Mexico and Puerto Rico. It was this same time of year when the most intense geomagnetic storm of the 20th Century took place during solar cycle 15 in a 3-day period from May 13-15 in 1921. That storm occurred before the widespread electrical dependence of infrastructure that we have in today’s world, but the impact from an extraordinarily powerful coronal mass ejection was still quite extensive. The storm’s electrical current sparked a number of fires around the world including one near the Grand Central Terminal in New York City. In addition, auroras appeared throughout the eastern US creating brightly lit nighttime skies and telegraph service virtually stopped in its tracks due to blown fuses and damaged equipment. Research in recent years has suggested that this super solar storm of May 1921 was equally as intense as the granddaddy of all super storms in recorded history – the “Carrington Event of 1859”.
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