Written by Alan Buis
Pasadena, CA – The “atmospheric river” weather patterns that pummeled California with storms from late December to late January may have recouped 37 percent of the state’s five-year snow-water deficit, according to new University of Colorado Boulder-led research using NASA satellite data.
Researchers at the university’s Center for Water Earth Science and Technology (CWEST) estimate that two powerful recent storms deposited roughly 17.5-million acre feet (21.6 cubic kilometers) of water on California’s Sierra Nevada range in January.
Written by Alan Buis
Pasadena, CA – A series of atmospheric rivers that brought drought-relieving rains, heavy snowfall and flooding to California this week is highlighted in a new movie created with satellite data from the Atmospheric Infrared Sounder (AIRS) instrument on NASA’s Aqua satellite.
The images of atmospheric water vapor were collected by AIRS between January 7th and 11th. They show the amount of moisture present in the atmosphere and its movement across the Pacific Ocean to the United States, where much of it fell as rain or snow.
Montgomery County, TN – Clarksville-Montgomery County Schools will dismiss one hour early.
This allows time for the city and state street and highway departments to clear roads, and helps us avoid delivering students home at dark.
Montgomery County, TN – The Clarksville Montgomery County School System shares with our parents and guardians concern about the impact of weather on student safety right now.
CMCSS is monitoring the weather situation.
Nashville, TN – The National Weather Service in Nashville has issued a Winter Weather Advisory for Clarksville-Montgomery County and most of Middle Tennessee today for two rounds of snow this morning and later this evening.
It is currently snowing in Clarksville-Montgomery County. Roads have already become covered.
The temperature is currently 16 degrees with a high today near 22 degrees. There is a 40 percent chance of snow until noon.
Nashville, TN – The National Weather Service in Nashville Tennessee has issued a winter weather advisory tonight for the Clarksville-Montgomery County area as well as parts of Middle Tennessee.
This evening and tonight, a half inch of snow up to 2 inches is expected, especially in northeastern areas and on the Cumberland Plateau. Isolated spots of up to 3 inches may be possible on the plateau as well.
Snow fall is already reported in the Hopkinsville Kentucky area.
Winter weather forecast for Thursday afternoon, evening
Clarksville, TN – With winter weather in the forecast for Thursday, Clarksville Mayor Kim McMillan says the Clarksville Street Department will be busy preparing the city’s main streets for possible snow.
“City of Clarksville street crews will be putting down brine — a water/salt mixture — Thursday morning on major city streets,” Mayor McMillan said.
Nashville, TN – The National Weather Service in Nashville Tennessee reports the first Snowfall of the Season is possible Thursday
As cold temperatures settle into the region late this week, Clarksville-Montgomery County will have its first opportunity for accumulating snowfall.
Starting Thursday afternoon and ending Friday night, the Cumberland Plateau is likely to see the majority of any snowfall we experience.
Nashville, TN – The National Weather Service has issued a Tornado Watch that is in effect until 9:00pm CT for Clarksville-Montgomery County and the Northwest half of Middle Tennessee.
There is also a Winter Weather Advisory in effect for the area from midnight tonight through 6:00am Sunday.
Some strong to severe thunderstorms will be possible through this evening. Main concerns will be severe thunderstorms that can develop damaging winds. Isolated hail and the formation of a tornado can not totally be ruled out.
Written by Alan Buis
Pasadena, CA – A new study by NASA and several partners has found that in California’s Sierra Nevada, atmospheric river storms are two-and-a-half times more likely than other types of winter storms to result in destructive “rain-on-snow” events, where rain falls on existing snowpack, causing it to melt. Those events increase flood risks in winter and reduce water availability the following summer.
The study, based on NASA satellite and ground-based data from 1998 through 2014, is the first to establish a climatological connection between atmospheric river storms and rain-on-snow events. Partnering with NASA on the study were UCLA; Scripps Institution of Oceanography, San Diego; and the Earth System Research Laboratory, Boulder, Colorado.
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