August 19 to August 25 – This Week in Denver Weather History

This Week In Denver Weather History
August 19 to August 25 - This Week in Denver Weather History

Funnel clouds, tornadoes, deadly flooding and more highlight our look back at this week in Denver weather history.

From the National Weather Service:

16-19

In 1979…heavy thunderstorm rains on each of 4 consecutive days dumped a total of 2.62 inches of rain on Stapleton International Airport. The heaviest rain…1.05 inches… On the 19th was accompanied by 1/4 inch diameter hail.

18-19

In 1875…nearly 0.75 inch of rainfall in the city overnight… Possibly assisted by heavier rainfall upstream…produced a decided and rapid rise in Cherry Creek…which washed out some bridges. Other small creeks and streams were filled to overflowing.

19

In 1983…heavy rain fell across the northern metro Denver suburbs with 1.50 to 1.80 inches of rain in Broomfield… Arvada…and Thornton.

In 1989…lightning killed a 31-year-old man and injured his 10 year old nephew when it hit a tree they were walking under in the foothills about 5 miles west of Boulder. The boy received mouth to mouth resuscitation on the scene and recovered after being hospitalized overnight. Three other people were knocked to the ground by the bolt…but were uninjured.

In 1990…3/4 inch diameter hail was reported in Wheat Ridge. A thunderstorm over west Denver dumped an inch of rain in 20 minutes…causing minor street flooding. One inch diameter hail was reported over east Denver. Ping pong to golf ball size hail was reported 14 miles northeast of Denver at the intersection of 122nd Ave. and Brighton Blvd. The hail stones knocked out windows and did an unspecified amount of damage to the roof of a house. Close by…heavy thunderstorm rains caused gullies…irrigation ditches…and small streams to overflow their banks near the intersection of 120th Avenue and Riverdale Road. Flood waters 1 to 2 feet deep covered the river bottom land along the South Platte River. However…no structures were threatened by the flood waters.

In 1999…heavy rain…up to 5 inches in two hours…caused east tollgate creek to jump its banks. The bike path adjacent to the creek was underwater at several locations. Several underpasses were also flooded…halting traffic. In addition…an unfinished playground at a local elementary school was completely flooded. Lightning struck a vehicle at east Evans Avenue and Tower Road. The woman inside the vehicle was not injured.

19-30

In 1875…grasshoppers appeared in great numbers at 10:00 am on the 19th. Thousands landed on the ground. The streets were literally covered with them. Swarms of grasshoppers were seen on each day. All gardens in the city were devastated…and in the countryside the grasshoppers were very destructive to ripened grain. On the 30th the grasshoppers were so numerous as to almost darken the sun.

Continue reading August 19 to August 25 – This Week in Denver Weather History

NASA satellites discover source of mysterious volcanic debris in South Pacific

While on a routine patrol late last week a New Zealand Defense Force patrol craft spotted a massive area of pumice floating in the South Pacific from an unknown source. Teaming up with NASA, volcanologists today pinpointed the source of a raft of debris covering thousands of square miles. Read the rest of this story on Examiner.com including satellite imagery of the undersea eruption.

A photo of the pumice raft when it was first spotted by a Royal New Zealand Air Force (RNZAF) Orion aircraft. (RNZAF)
A photo of the pumice raft when it was first spotted by a Royal New Zealand Air Force (RNZAF) Orion aircraft. (RNZAF)

 

August 12 to August 18 – This Week in Denver Weather History

This Week In Denver Weather History
August 12 to August 18 - This Week in Denver Weather History

Denver’s weather calms considerably in August as compared to many other months but the history books show plenty of notable events in our past. Lightning, flooding rain and even a tornado highlight this week in Denver weather history.

8-13

In 1875…clouds of grasshoppers were seen flying through the air on the prevailing winds during each day.

12

In 1876…the temperature climbed to a high of 100 degrees in downtown Denver.

In 1941…excessive thunderstorm rainfall flooded streets and delayed traffic for a few hours in some sections of the city. The basements of a considerable number of homes and commercial buildings were flooded. The total value of the damage was unknown. Only 0.94 inch of thunderstorm rainfall was recorded downtown.

In 1969…a man and a 9-year old boy were injured…when lightning struck a tree near where they were standing. Both were revived after treatment…but the boy later died of respiratory failure due to electrical shock.

In 1984…heavy thunderstorm rains drenched southern metro Denver. Rural roads in Douglas County received minor washouts. Hail…as large as 3/4 inch in diameter…was reported in southeast Aurora with one inch diameter hail reported near Parker. Rainfall totaled 1.00 inch at Stapleton International Airport.
12-13 in 1975…heavy rains caused flash flooding along the foothills from Denver north. Thunderstorm rainfall totaled 1.56 inches at Stapleton International Airport.

In 2004…a brief cool spell resulted in two daily temperature records. The low temperature of 49 degrees was a record minimum for the 12th…as was the low temperature of 48 degrees on the 13th.

13

In 1959…thunderstorm winds gusted to 53 mph at Stapleton Airport.

In 1983…thunderstorms dumped torrential rain in Northglenn… Thornton…and Broomfield. Northglenn was drenched with 1.72 inches in 30 minutes. Street flooding was widespread. Hail…as large as 3/4 inch in diameter…was reported 7 miles northeast of Boulder along with heavy rain which caused some street flooding.

In 2000…lightning sparked 3 small grass fires near Golden. The fires were quickly contained. Hail as large as 3/4 inch in diameter fell in Castle Rock.

Continue reading August 12 to August 18 – This Week in Denver Weather History

Forecasters increase chances for hurricane activity during second half of season

The 2012 Atlantic hurricane season has been a relatively active one although not particularly notable. NOAA forecasters have updated their outlook for the season though and are cautioning that hurricane activity may soon increase in the basin.  Read the rest of this story on Examiner.com

Tropical Storm Ernesto is seen lashing the Yucatán Peninsula on August 8, 2012.
Tropical Storm Ernesto is seen lashing the Yucatán Peninsula on August 8, 2012. (NASA)

 

NOAA’s most accurate climate network contradicts agency’s own claims of ‘hottest month ever’

To listen to the United States’ primary agency responsible for monitoring the climate, one would think the end is near as global temperatures continue to rise at an alarming rate. However, the National Oceanic and Atmospheric Administration’s (NOAA) own monitoring network specifically designed to monitor global warming contradicts these claims. Read the rest of this story on Examiner.com to find out why we should be skeptical when we hear claims of record-setting heat. 

NOAA created the US Climate Reference Network (USCRN) to ensure the integrity of climate data yet it disregards results from the system. (NOAA)
NOAA created the US Climate Reference Network (USCRN) to ensure the integrity of climate data yet it disregards results from the system. (NOAA)

NOAA: July 2012 goes into record books as hottest month ever for United States

Sweltering, unseasonably warm temperatures gripped much of the contiguous United States last month breaking many records. In the final analysis of the month, NOAA announced that July was the hottest month ever recorded in the U.S.  How hot was it?  Read the rest of this story on Examiner.com

Much of the Lower 48 states saw above average temperatures during July 2012.  Click the image to view the story and slideshow.
Much of the Lower 48 states saw above average temperatures during July 2012. Click the image to view the story and slideshow. (NOAA)

Smoke from northwestern United States wildfires blankets neighboring Colorado

The Mile High City found itself in a bit of a haze yesterday that continues into today as smoke from wildfires to Colorado’s northwest moves into the state. Dozens of fires are burning across the region and while none have been as devastating as those seen in recent months, their effects are being felt far and wide. Read the rest of this story and view satellite imagery of the smoke plume on Examiner.com.

NASA’s Curiosity rover makes perfect landing; image captures amazing decent

NASA's Curiosity rover and its parachute were spotted by NASA's Mars Reconnaissance Orbiter as Curiosity descended to the surface on Aug. 5 PDT (Aug. 6 EDT). Image Credit: NASA/JPL-Caltech/Univ. of Arizona
NASA's Curiosity rover and its parachute were spotted by NASA's Mars Reconnaissance Orbiter as Curiosity descended to the surface on Aug. 5 PDT (Aug. 6 EDT). Image Credit: NASA/JPL-Caltech/Univ. of Arizona

Landing on Mars has proven over the years to be an extremely difficult task  with few space probes seeing success.  NASA’s Curiosity rover beat the odds completing its 352 million mile journey with a perfect landing early Monday morning.

The probe was launched on November 26 and as it neared its touchdown on the Red Planet, NASA had been discussing the “7 minutes of terror” involved in inserting the probe into the Martian atmosphere and successfully landing.  The craft used an amazing array of equipment to land including a sky crane and a supersonic parachute.

The image above was taken by the Mars Reconnaissance Orbiter in a perfectly choreographed event designed to capture just an image.  The photo shows Curiosity dangling under its massive parachute as it descends to the surface.

For more on NASA’s Curiosity rover mission click here.

From NASA:

Curiosity Spotted on Parachute by Orbiter

NASA’s Curiosity rover and its parachute were spotted by NASA’s Mars Reconnaissance Orbiter as Curiosity descended to the surface on Aug. 5 PDT (Aug. 6 EDT). The High-Resolution Imaging Science Experiment (HiRISE) camera captured this image of Curiosity while the orbiter was listening to transmissions from the rover. Curiosity and its parachute are in the center of the white box; the inset image is a cutout of the rover stretched to avoid saturation. The rover is descending toward the etched plains just north of the sand dunes that fringe “Mt. Sharp.” From the perspective of the orbiter, the parachute and Curiosity are flying at an angle relative to the surface, so the landing site does not appear directly below the rover.

The parachute appears fully inflated and performing perfectly. Details in the parachute, such as the band gap at the edges and the central hole, are clearly seen. The cords connecting the parachute to the back shell cannot be seen, although they were seen in the image of NASA’s Phoenix lander descending, perhaps due to the difference in lighting angles. The bright spot on the back shell containing Curiosity might be a specular reflection off of a shiny area. Curiosity was released from the back shell sometime after this image was acquired.

This view is one product from an observation made by HiRISE targeted to the expected location of Curiosity about one minute prior to landing. It was captured in HiRISE CCD RED1, near the eastern edge of the swath width (there is a RED0 at the very edge). This means that the rover was a bit further east or downrange than predicted.

The image scale is 13.2 inches (33.6 centimeters) per pixel .

HiRISE is one of six instruments on NASA’s Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates the orbiter’s HiRISE camera, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA’s Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the spacecraft.

Credit: NASA/JPL-Caltech/Univ. of Arizona

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