Boulder weather from Boulder Channel 1 News : Includes latest up to the minute weather forecasts from Nationals Weather Service in Boulder. Team coverage from Boulder Channel 1 News during Snow, and floods. See our weather on Twitter @BoulderCh1News and FaceBook Boulder Channel one. Be a weather watcher: write Boulder.BoulderChannel1@gmail.com or call News 303-447-8531
Thursday 05/25 20%
A mix of clouds and sun early followed by cloudy skies this afternoon. A stray shower or thunderstorm is possible. High 74F. Winds W at 10 to 20 mph.
Friday 05/26 80%
Thunderstorms likely in the morning. Then the chance of scattered thunderstorms in the afternoon. High 64F. Winds ENE at 5 to 10 mph. Chance of rain 80%.
Saturday 05/27 100%
Thunderstorms likely. High around 55F. Winds NNE at 5 to 10 mph. Chance of rain 100%.
7 day weather forecast above
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The city of Boulder is under emergency Alert, High flood warnings have been issued and parts of the surrounding areas have been evacuated, here are some videos of the flooding in the streets and paths.
To continue to provide the most up-to-date information, resources and a dedicated contact for flood-related information, Boulder Flood Info will now have a presence on Inquire Boulder as well as a dedicated phone line.
Boulder Flood Info is the city’s comprehensive resource for all flood-related information. Currently, community members can visit www.BoulderFloodInfo.net for timely flood preparedness and recovery information or email BoulderFloodInfo@bouldercolorado.gov with questions or concerns.
With flood season upon us, expanding Boulder Flood Info was essential to provide our community with more options to get the most up-to-date information, said City Manager Jane Brautigam. We understand that community members are at very different stages of recovery and want to ensure they can get the information they need in various different ways.
Flood Info on Inquire Boulder
Inquire Boulder – the city’s virtual information desk – has been expanded to include a ‘Flood Information’ topic. This topic covers all flood-related information requests citywide. Community members can visit the Flood Information topic and make a service request. Inquire Boulder also has a specific topic dedicated to Flood Cleanup. If you have a Smartphone, residents are encouraged to download Inquire Boulder app. This app automatically geolocates service requests and provides the ability to take a picture with your device and include it with the submission.
Flood Info dedicated phone line
The Boulder Flood Info phone line, available at 303-441-1856, will be a central point of contact for residents and community members. As a citywide entry point, this phone line is a resource to answer questions as appropriate as well as route calls for department or topic-specific questions.
These additional resources should be used for informational purposes and are not intended for emergency requests. If residents feel their flood question or concern is an emergency, call 911 immediately.
Other ways to get Boulder Flood Info:
Visit www.BoulderFloodInfo.net for comprehensive, up-to-date flood-related info including:
Downloadable Community Guide to Flood Safety;
See the Flood Recovery Status Map; and
Learn about what the city is doing and what you can do to recover and prepare for flooding in Boulder.
Sign up for the Boulder Flood Info email list
Submit questions via BoulderFloodInfo@bouldercolorado.gov.
Source: City of Boulder
likely a long-term refuge for early Americans
A new study led by the University of Colorado Boulder bolsters the theory that the first Americans, who are believed to have come over from northeast Asia during the last ice age, may have been isolated on the Bering Land Bridge for thousands of years before spreading throughout the Americas.
The theory, now known as the “Beringia Standstill,” was first proposed in 1997 by two Latin American geneticists and refined in 2007 by a team led by the University of Tartu in Estonia that sampled mitrochondrial DNA from more than 600 Native Americans. The researchers found that mutations in the DNA indicated a group of their direct ancestors from Siberia was likely isolated for at least several thousand years in the region of the Bering Land Bridge, the now-submerged plain that lies between northeast Asia and Alaska once exposed by a significantly lower sea level.
CU-Boulder researcher John Hoffecker, lead author of a short paper article appearing in the Feb. 28 issue of Science magazine, said the Beringia Standstill model gained little traction outside of the genetics community after it was proposed and has been seen by some scientists outside of the field as far-fetched. But the new paper by Hoffecker and co-authors Scott Elias of Royal Holloway, University of London, and Dennis O’Rourke of the University of Utah adds credence to the Beringia Standstill idea by further linking the genetics to the paleoecological evidence.
“A number of supporting pieces have fallen in place during the last decade, including new evidence that central Beringia supported a shrub tundra region with some trees during the last glacial maximum and was characterized by surprisingly mild temperatures, given the high latitude,” said Hoffecker of CU-Boulder’s Institute of Arctic and Alpine Research. The last glacial maximum peaked roughly 21,000 years ago and was marked by the growth of vast ice sheets in North America and Europe.
While a debate rages on about when early humans first migrated into the New World, many archaeologists now believe it was sometime around 15,000 years ago after retreating glaciers opened access to coastal and interior routes into North America.
The relatively mild summer climate in Beringia at the time was caused by North Pacific circulation patterns that brought moist and relatively warm air to the region during the last glacial maximum. Geologists believe the Beringia gateway between Siberia and Alaska was more than 600 miles wide at the time.
Hoffecker and others are now theorizing that a population of hundreds or thousands of people parked itself in central Beringia for 5,000 years or more. One key to the extended occupation may have been the presence of wood in some places to use as a fuel to supplement bone, which burns hot and fast. Experiments have shown that at least some wood is necessary to make bone practical as a fuel.
Elias, a paleoecologist and also an INSTAAR affiliate, said research using fossil pollen, plant and insect material from sediment cores from the now submerged landscape show that the Bering Land Bridge tundra environment contained enough woody plants and trees like birch, willow and alder to provide a supplement to bone.
Work by Elias and others included the analysis of certain beetle species that live in very specific temperature zones, allowing them to be used as tiny thermometers. The insects indicated that temperatures there were relatively mild during last glacial maximum that ran from about 27,000 years to 20,000 years ago, only slightly cooler than temperatures in the region today.
“The climate on the land bridge and adjacent parts of Siberia and Alaska was a bit wetter than the interior regions like central Alaska and the Yukon, but not a lot warmer,” said Elias. “Our data show that woody shrubs were available on the land bridge, which would have facilitated the making of fires by the people there.”
Evidence from the 2007 study indicated a set of genetic mutations in mitochondrial DNA, which is passed down from mother to offspring, clearly accumulated after the divergence of people from their Asian parent groups in Siberia but before their dispersal throughout the Western Hemisphere, said O’Rourke. In addition, ancient DNA from human skeletal remains found at a 24,000-year-old archaeological site in southern Siberia also appears consistent with the divergence of Native American groups from their Asian forbearers by that time window, he said.
“The genetic record has been very clear for several years that the Native American genome must have arisen in an isolated population at least by 25,000 years ago, and the bulk of the migrants to the Americas really didn’t arrive south of the ice sheets until nearly 15,000 years ago,” O’Rourke said. “The paleoecological data, which I think most geneticists have not been familiar with, indicate that Beringia was not a uniform environment, and there was a shrub tundra region, or refugium, that likely provided habitats conducive to continuous human habitation.”
“From my view the genetics and paleoecology data come together nicely,” said Hoffecker, who co-authored a 2007 book with Elias titled “The Human Ecology of Beringia.” While the weakest link to the Out of Beringia theory is the lack of archaeological evidence, Hoffecker believes future research on now submerged parts of Beringia as well as lowlands in western Alaska and eastern Siberia that still remain above water may hold clues to ancient habitation by Beringia residents, who eventually moved on to be the first group to inhabit the Americas.
Hoffecker also believes that the Beringia inhabitants during the last glacial maximum could have made successful hunting forays into the uninhabited steppe-tundra region to both the east and west, where drier conditions and more grass supported a plentiful array of large grazing animals, including steppe bison, horse and mammoth.
There is now solid evidence for humans in Beringia before the last glacial maximum, as geneticists first predicted in 1997, said Hoffecker. After the maximum, there are two sets of archaeological remains dating to less than 15,000 years ago. “One represents a late migration from Asia into Alaska at that time,” he said. “The other has no obvious source outside Beringia and may represent the people who are thought to have sheltered on the land bridge during the glacial maximum.
“If we are looking for a place to put all of these people during the last glacial maximum, Beringia may be the only realistic option,” said Hoffecker.
A video news story on the research is available at http://www.colorado.edu/news.
Everything you have wanted to know about high winds in Boulder, and then some.
In a nut shell: In 42 years worth of data, 175 days recorded winds of 70 m.p.h. or greater. Eighty six of these occurred in December and January. The highest wind gust recorded was 137 m.p.h. on Jan. 16-17, 1982, with 20 gusts of greater than 120 m. p. h. Forty percent of all Boulder buildings sustained damage. Most of the highest winds were in south Boulder.
Boulder has some of the highest peak winds of any city in the US.
For data and tables, go to:
Xcel Energy is working to address a gas outage that is impacting a significant number of homes in parts of the city and Boulder County. Boulder Fire-Rescue is offering tips to help keep people safe during the outage.
ü If your pilot light is out after gas service is restored and you don’t know how to re-light it, you may contact Xcel to come to your home to relight the pilot for you. Xcel is asking individuals who need assistance to call 1-800-295-4999 to provide a cell phone for crews to contact you; if you will be home when crews come by, please leave your porch light. Call a professional contractor if you don’t wish to wait for Xcel.
ü If your pipes freeze, avoid using blow torches or open flames to try to heat them. Just yesterday, Dec. 5, 2013, someone caused a fire in a mobile home while using a blow torch to heat frozen pipes. Although no one was injured, the mobile home suffered extensive damage from the fire.
ü If you have neighbors who are elderly or who are physically/mentally challenged, please check on them to make sure they’re okay. If they are in need of medical attention, call 9-1-1.
ü If you plan to use an electric space heater, consider the following precautions:
· Keep space heaters at least 3 feet away from flammable objects like curtains, furniture and bedding.
· Make sure to keep a 3-foot “kid-free zone” around space heaters and fires.
· Use space heaters only when you’re present in your home or business, and only while you’re awake. Never use space heaters while you sleep.
How to Prevent Carbon Monoxide Poisoning
Carbon monoxide is a poisonous gas which can be produced when a furnace or other appliances are not working properly. It can also be produced when wood-burning fireplaces are not vented properly.
Carbon monoxide is a colorless and odorless gas, and inhaling it can cause death. Symptoms of carbon monoxide poisoning include feeling out of breath, dizziness, nausea and headaches. If you or any of your family members experience these symptoms, leave the building immediately and call 9-1-1.
ü Make sure to install a carbon monoxide detector in your home or business. Check the batteries regularly to ensure that it’s working properly.
ü Don’t use a charcoal or wood grill indoors or in a garage.
ü Never operate kerosene or propane heaters indoors without proper venting.
ü Never use your oven to heat your home.
Emergency Contacts and Shelter Information
In case of emergency, contact 9-1-1. For other calls, the non-emergency dispatch number is 303-441-3333. To report outages, please contact Xcel directly at 1-800-895-2999.
The American Red Cross will be opening a warm shelter for people impacted by this emergency. The shelter will be available starting at 3 p.m. today and is located at Douglass Elementary School, 840 75th St. near 75th Street and Baseline Road.
To supplement our Colorado crews working to restore natural gas service to customers in Boulder County affected by this morning’s outage, we have called in additional Xcel Energy crews from around the state and from Minnesota and Wisconsin. We have also contacted utilities in California and New Mexico plus private companies too. With temperatures hovering in the single digits, we want to restart service as quickly and safely as possible. Approximately 7,000 homes are without service. We estimate 90 percent of customers will have service by noon tomorrow. Crews will work around-the-clock to restore service to customers.
We will call customers in advance to alert them that crews will be in their neighborhoods to relight pilots for natural gas appliances. It is important that we can reach you with this information. If you have not given us your cell phone number in the past, please call us at 1-800-895-4999 to provide your cell phone number or another alternate phone number.
To help our crews restore your service tonight, please turn on an outside light if you will be available to let them into your home. A person who is at least 18 years old must be at home to allow our crews access to your home. If not, we will need to return later. Please do not attempt to re-light natural gas appliances yourself. Not only can your appliances or equipment be damaged by improper re-lights but you can place yourself and your family in danger.
Our employees will check your appliances and re-light them for you free of charge. The American Red Cross opened a warming shelter for people affected by the natural gas outage. The center is located at Douglass Elementary School, 840 75th St. near 75th Street and Baseline Road.
Like other Front Range communities, the city does not typically plow residential streets since most snow melts within a day or two and residential plowing would significantly increase costs, impacting other high-priority services. During most snowstorms, one “floater” snow plow responds to requests from the community and public safety personnel. When snowfall exceeds 12 inches, the city strategically services known problem areas on some residential streets. To request plowing on a specific residential street, make a “Snow Plow Request” online via www.inquireboulder.com or call Snow Dispatch at 303-413-7109.
Residential Street Plowing Pilot Program
In response to community feedback, the City of Boulder is also implementing a residential street plowing pilot program between Dec. 1, 2013, and March 1, 2014. Two snow plows will be sent to 10 pre-identified residential areas when both of the following criteria are met:
- eight inches or more of snow is predicted or actually accumulates (not including snowpack already on the road surface); and
- daytime temperatures are predicted to remain below freezing for the 72 hours after the snowstorm.
If both criteria are met and the pilot program is activated, the city will post a notification on the Snow and Ice Removal Web page. View the “Residential Street Plowing Pilot Program Map” atbouldercolorado.gov/links/fetch/18735 to see the specific neighborhood streets where snow plows may be deployed as part of the pilot program.
To make winter travel safer:
- give snow plows and spreader trucks plenty of room to operate;
- allow for more stopping distance on icy or snowy roads;
- avoid making last-minute decisions;
- teach your children to be extra careful around traffic; and
- use extra caution as you walk and bike in icy conditions.
Do not pass snow plows or spreader trucks, which are both wider than one traffic lane. This will help you avoid potential accidents, windshield damage and limited visibility caused by flying snow and ice.
Sidewalk Snow and Ice Removal
Property owners, landlords and tenants must remove snow and ice from their sidewalks within 24 hours after snow stops falling. Clearing sidewalks in a timely manner makes travel safer for all pedestrians. Failure to remove snow from sidewalks before the 24-hour deadline may result in fines and/or abatement, which involves paying for a private snow removal contractor to clear the sidewalks. If the city incurs costs related to abatement, these will be passed on to the property owner.
Visit bouldercolorado.gov/links/fetch/9834 to view official snowfall reports from the National Weather Service. To report sidewalk violations, make a service request for “Sidewalk Snow & Ice Removal” online viawww.inquireboulder.com or call Code Enforcement at 303-441-3333.
Seniors and disabled residents who are physically unable to remove snow from their sidewalks may receive volunteer assistance through the Boulder County CareConnect Ice Busters program. Visit www.careconnectbc.org or call 303-443-1933 ext. 413 to volunteer or ext. 416 to request assistance.
For more detailed information about the city’s snow and ice removal operations, visitwww.bouldercolorado.gov/public-works and select the “Snow and Ice Removal” link.
– CITY –
“As we saw during the recent floods, emergencies can happen quickly and without warning,” said Stuart Pike, CU-Boulder emergency management director. “The Campus Alerts system is our most effective means of communicating key safety messages to the campus community. It’s important for students, faculty and staff to be aware of this critical messaging platform.”
If the emergency involves a threat to personal safety or a campus closure, a campus alert will be sent using one or all of the communication methods available. Text messaging is the backbone of the system as it reaches the most individuals in the least amount of time.
More than 90 percent of CU-Boulder students, faculty and staff are registered for the Campus Alerts system and over 90 percent of those have at least one mobile device registered, according to Pike.
During an emergency that affects the campus, critical updates, additional details, and any necessary instructions regarding the nature of the emergency will be posted at http://alerts.colorado.edu, university social media sites, and on the campus Emergency Information Line at 303-492-4636 (303-492-INFO).
Active CU-Boulder student email addresses (@colorado.edu) are automatically registered and the university encourages students to add mobile phone numbers in order to receive text notifications as well. Faculty, staff, or affiliates of the CU-Boulder community with an @colorado.edu (or cufund.org, or cu.edu) e-mail address are encouraged to register on a voluntary basis. Additional information is available at http://alerts.colorado.edu.
Details on the decision process for determining a closure, how administrative leave should be handled for essential personnel and other employees, and answers to questions that frequently arise are covered in “Campus Closing Procedures During Emergencies” located at http://www.colorado.edu/policies/campus-closing-procedures-during-emergencies.
Any user who expected to receive an alert and didn’t, or who needs help signing up for the system, should call the IT Service Center at 303-735-HELP or email email@example.com.
Average summer temperatures in the Eastern Canadian Arctic during the last 100 years are higher now than during any century in the past 44,000 years and perhaps as long ago as 120,000 years, says a new University of Colorado Boulder study.
The study is the first direct evidence the present warmth in the Eastern Canadian Arctic exceeds the peak warmth there in the Early Holocene, when the amount of the sun’s energy reaching the Northern Hemisphere in summer was roughly 9 percent greater than today, said CU-Boulder geological sciences Professor Gifford Miller, study leader. The Holocene is a geological epoch that began after Earth’s last glacial period ended roughly 11,700 years ago and which continues today.
Miller and his colleagues used dead moss clumps emerging from receding ice caps on Baffin Island as tiny clocks. At four different ice caps, radiocarbon dates show the mosses had not been exposed to the elements since at least 44,000 to 51,000 years ago.
Since radiocarbon dating is only accurate to about 50,000 years and because Earth’s geological record shows it was in a glaciation stage prior to that time, the indications are that Canadian Arctic temperatures today have not been matched or exceeded for roughly 120,000 years, Miller said.
“The key piece here is just how unprecedented the warming of Arctic Canada is,” said Miller, also a fellow at CU-Boulder’s Institute of Arctic and Alpine Research. “This study really says the warming we are seeing is outside any kind of known natural variability, and it has to be due to increased greenhouse gases in the atmosphere.”
A paper on the subject appeared online Oct. 23 in Geophysical Research Letters, a journal published by the American Geophysical Union. Co-authors include CU-Boulder Senior Research Associate Scott Lehman, former CU-Boulder doctoral student and now Prescott College Professor Kurt Refsnider, University of California Irvine researcher John Southon and University of Wisconsin, Madison Research Associate Yafang Zhong. The National Science Foundation provided the primary funding for the study.
Miller and his colleagues compiled the age distribution of 145 radiocarbon-dated plants in the highlands of Baffin Island that were exposed by ice recession during the year they were collected by the researchers. All samples collected were within 1 meter of the ice caps, which are generally receding by 2 to 3 meters a year. “The oldest radiocarbon dates were a total shock to me,” said Miller.
Located just east of Greenland, the 196,000-square-mile Baffin Island is the fifth largest island in the world. Most of it lies above the Arctic Circle. Many of the ice caps on the highlands of Baffin Island rest on relatively flat terrain, usually frozen to their beds. “Where the ice is cold and thin, it doesn’t flow, so the ancient landscape on which they formed is preserved pretty much intact,” said Miller.
To reconstruct the past climate of Baffin Island beyond the limit of radiocarbon dating, Miller and his team used data from ice cores previously retrieved by international teams from the nearby Greenland Ice Sheet.
The ice cores showed that the youngest time interval from which summer temperatures in the Arctic were plausibly as warm as today is about 120,000 years ago, near the end of the last interglacial period. “We suggest this is the most likely age of these samples,” said Miller.
The new study also showed summer temperatures cooled in the Canadian Arctic by about 5 degrees Fahrenheit from roughly 5,000 years ago to about 100 years ago – a period that included the Little Ice Age from 1275 to about 1900.
“Although the Arctic has been warming since about 1900, the most significant warming in the Baffin Island region didn’t really start until the 1970s,” said Miller. “And it is really in the past 20 years that the warming signal from that region has been just stunning. All of Baffin Island is melting, and we expect all of the ice caps to eventually disappear, even if there is no additional warming.”
Temperatures across the Arctic have been rising substantially in recent decades as a result of the buildup of greenhouse gases in Earth’s atmosphere. Studies by CU-Boulder researchers in Greenland indicate temperatures on the ice sheet have climbed 7 degrees Fahrenheit since 1991.
A 2012 study by Miller and colleagues using radiocarbon-dated mosses that emerged from under the Baffin Island ice caps and sediment cores from Iceland suggested that the trigger for the Little Ice Age was likely a combination of exploding tropical volcanoes – which ejected tiny aerosols that reflected sunlight back into space – and a decrease in solar radiation.