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Topic: National Weather Service

NASA’s Convective Processes Experiment (CPEX) will try to improve Weather Forecasts

 

Written by Carol Rasmussen
NASA’s Earth Science News Team

NASA - National Aeronautics and Space AdministrationWashington, D.C. – A NASA-funded field campaign getting underway in Florida on May 25th has a real shot at improving meteorologists’ ability to answer some of the most fundamental questions about weather: Where will it rain? When? How much?

Called the Convective Processes Experiment (CPEX), the campaign is using NASA’s DC-8 airborne laboratory outfitted with five complementary research instruments designed and developed at NASA.

The plane also will carry small sensors called dropsondes that are dropped from the plane and make measurements as they fall.

Convective storm clouds over Fort Lauderdale, Florida, preceding Hurricane Sandy in 2012. (Flickr user John Spade, CC BY 2.0)

Convective storm clouds over Fort Lauderdale, Florida, preceding Hurricane Sandy in 2012. (Flickr user John Spade, CC BY 2.0)

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City of Clarksville closes Liberty Park, Boat Ramps due to High Water

 

Liberty Park Grill to remain open

City of Clarksville - Clarksville, TNClarksville, TN – Rising waters on the Cumberland River and its tributaries have closed several City of Clarksville parks and boat ramps.

Liberty Park will remain closed Tuesday, April 26th, 2017 because water over roads is blocking access to much of the park, including Freedom Point, Clarksville Marina and the park’s boat ramps.

Clarksville's Liberty Park boat ramp are closed due to high water.

Clarksville’s Liberty Park boat ramp are closed due to high water.

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Flash Flood Watch in effect for Clarksville-Montgomery County through late Saturday night

 

National Weather ServiceNashville, TN – The National Weather Service reports has issued a flash flood watch for Clarksville-Montgomery and Middle Tennessee. The flash flood watch is in effect from 3:00am Saturday morning April 22nd through late Saturday night.

Previous rainfall accumulations have left most of Middle Tennessee with saturated ground conditions. Periods of moderate showers and thunderstorms will become more pronounced late tonight through late Saturday night, resulting in additional one to three inches of rainfall that could lead to flash flooding across the mid state.

Recent rain has saturated the ground. Any additional rainfall could cause flooding.

Recent rain has saturated the ground. Any additional rainfall could cause flooding.

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Enhanced Risk of Severe Thunderstorms across Clarksville-Montgomery County Wednesday

 

National Weather ServiceNashville, TN – The National Weather Service says there is an enhanced risk of severe thunderstorms for Clarksville-Montgomery County and Middle Tennessee on Wednesday, April 5th.

Storms are expected to develop during the afternoon and evening hours. Although severe storms will be possible west of I-65, the highest chances of severe weather appear to be east of I-65.

 Severe Thunderstorms across Clarksville-Tennessee Wednesday, April 5th «Read the rest of this article»

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Weather Advisory issued for Clarksville-Montgomery County and Stewart County

 

National Weather ServiceNashville, TN – The National Weather Service (NWS) out of Nashville reports that at 6:45pm CT, Doppler radar was tracking a strong thunderstorm near
Fort Campbell North, moving northeast at 50 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this storm.

Locations impacted include: Clarksville, Cumberland City, Indian Mound, Palmyra and Woodlawn.

A Strong Thunderstorm has been reported North of Fort Campbell Kentucky.

A Strong Thunderstorm has been reported North of Fort Campbell Kentucky.

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Clarksville-Montgomery County under Severe Thunderstorm Watch

 

National Weather ServiceNashville, TN – The National Weather Service has issued a Severe Thunderstorm Watch today for Clarksville-Montgomery County and Middle Tennessee until 8:00pm tonight.

Strong to severe thunderstorms are possible this afternoon and evening across all of Middle Tennessee. The greatest chance for severe storms however remains along and west of I-65.

Severe Thunderstorms, Heavy Rain, and High Winds possible for Clarksville-Montgomery County this afternoon.

Severe Thunderstorms, Heavy Rain, and High Winds possible for Clarksville-Montgomery County this afternoon.

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Freeze Warning in effect for Clarksville-Montgomery County tonight

 

National Weather ServiceNashville, TN – The National Weather Service has issued a freeze warning for Clarksville-Montgomery County and parts of Middle Tennessee tonight, Wednesday, March 15th, after 9:00pm CT. Sensitive plants should be protected.

The freeze warning will remain in effect until 10:00am CDT, Thursday.

Northwesterly flow aloft and a surface high over Middle Tennessee has ushered in a very cold air mass.

Freeze Warning «Read the rest of this article»

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Light Snowfall Accumulations Tonight across Clarksville-Montgomery County

 

National Weather ServiceNashville, TN – The National Weather Service in Nashville says cold air will filter into the Clarksville-Montgomery County and change rain this afternoon into snow tonight across the mid-state.

While the higher snowfall amounts will likely be relegated to the southern Cumberland Plateau region, the rest of Middle Tennessee can expect to see anywhere from a dusting up to 1 inch of snow.

Snowfall could begin as early as 9:00pm and begin to trickle off after 3:00am Sunday morning.

Light Snowfall possible across Clarksville-Montgomery County tonight into Sunday morning.

Light Snowfall possible across Clarksville-Montgomery County tonight into Sunday morning.

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Freeze Warning issued for Clarksville-Montgomery County until early Saturday morning

 

National Weather ServiceNashville, TN – The National Weather Service in Nashville has issued a Freeze Warning for the Clarksville-Montgomery County Area, which is in effect from 10:00pm CT this evening, Friday, March 10th to 8:00am CT Saturday, March 11th.

As strong surface based Canadian high pressure influences build into Middle Tennessee tonight, most locations will experience temperatures falling through the freezing mark late this evening and overnight.

Clarksville-Montgomery County under Freeze Warning until early Saturday morning, March 11th, 2017.

Clarksville-Montgomery County under Freeze Warning until early Saturday morning, March 11th, 2017.

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NASA reports NOAA’s GOES-16 Satellite begins mapping Lightning

 

Written by Michelle Smith
National Oceanic and Atmospheric Administration

NASA - National Aeronautics and Space AdministrationSilver Spring, MD – Detecting and predicting lightning just got a lot easier. The first images from a new instrument onboard NOAA’s GOES-16 satellite are giving NOAA National Weather Service forecasters richer information about lightning that will help them alert the public to dangerous weather.

The first lightning detector in a geostationary orbit, the Geostationary Lightning Mapper (GLM), is transmitting data never before available to forecasters. The mapper continually looks for lightning flashes in the Western Hemisphere, so forecasters know when a storm is forming, intensifying and becoming more dangerous. Rapid increases of lightning are a signal that a storm is strengthening quickly and could produce severe weather.

This is one hour of GOES-16's Geostationary Lightning Mapper (GLM) lightning data from Feb. 14, when GLM acquired 1.8 million images of the Earth. It is displayed over GOES-16 ABI full disk Band 2 imagery. Brighter colors indicate more lightning energy was recorded; color bar units are the calculated kilowatt-hours of total optical emissions from lightning. This is preliminary, non-operational data. (NOAA/NASA)

This is one hour of GOES-16’s Geostationary Lightning Mapper (GLM) lightning data from Feb. 14, when GLM acquired 1.8 million images of the Earth. It is displayed over GOES-16 ABI full disk Band 2 imagery. Brighter colors indicate more lightning energy was recorded; color bar units are the calculated kilowatt-hours of total optical emissions from lightning. This is preliminary, non-operational data. (NOAA/NASA)

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