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Dual-polarization radar technology
- Dual-polarization radar technology, installed on NWS radars, can detect the presence of random shaped and sized targets like leaves, insulation or other debris. This gives meteorologists a high degree of confidence that a damaging tornado is on the ground, and is especially helpful at night when tornadoes are difficult to see with the human eye.
www.nssl.noaa.gov/education/svrwx101/tornadoes/detection/Severe Weather 101: Tornado Detection - NOAA National Severe ...
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Jun 5, 2019 · When severe weather strikes, meteorologists can use this technology to pinpoint the precise location of damaging tornadoes and give more accurate warnings to those in its path.
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What we do: NSSL developed the WSR-88D Mesoscale Detection Algorithm to analyze radar data and look for a rotation pattern meeting specific criteria for size, strength, vertical depth, and duration. A mesocyclone is usually 2-6 miles in diameter, and is much larger than the tornado that may develop within it.
What we do: NSSL's On-Demand web-based tool helps confirm when and where tornadoes have possibly occurred by mapping circulations on Google Earth satellite images. NWS forecasters can quickly review warnings and check their accuracy with this system. Emergency responders and damage surveyors have also used On-Demand to produce high-resolution stree...
NSSL engineers and scientists have adapted phased array technology, formerly used on Navy ships for surveillance, for use in weather forecasting. Phased array technology can scan an entire storm in less than one minute, allowing forecasters to see signs of developing tornadoes well ahead of current radar technology. NSSL uses a mobile Doppler radar...
NSSL built the first real-time displays of Doppler velocity data. This lead to an NSSL scientist's discovery of the Tornadic Vortex Signature in radar velocity data in the 1970's. These developments helped spur deployment of the WSR-88D NEXRAD radar network. The Department of Commerce recognized NSSL's contribution to the NEXRAD program and to our ...
NSSL made the first observations of a tornadic storm with two Doppler radars (called dual-Doppler). The radars were located about 40 miles from each other and were able to record data on the same storm but from two different perspectives. The data was used to map the structure of a tornadic storm at several altitudes.
NSSL has used an airborne Doppler radar (installed on NOAA's P-3 research aircraft) to study storms. The first direct measurements of a tornado recorded with an airborne Doppler radar were made by NSSL. New concepts of making dual-Doppler measurements using the WSR-88D with the airborne Doppler were first tested in 1989 and are now used routinely.
Meteorologist Jamie Kagol explains how Doppler radar can detect severe weather events like tornadoes.Welcome to the official YouTube channel of KARE 11 News....
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Aug 19, 2023 · Doppler radar can detect the rotation within a storm’s mesocyclone, a key component of tornado development. Meteorologists analyze the radar’s velocity data to identify rotational patterns in the atmosphere, helping forecasters determine if a tornado is imminent.
Feb 14, 2013 · The Hook Echo. The most recognized and well-known radar signature for tornadic supercells. This “hook-like” feature occurs when the strong counter-clockwise winds circling the mesocyclone (rotating updraft) are strong enough to wrap precipitation around the rain-free updraft area of the storm.
Apr 25, 2022 · It looks like a spiral turning outward in a clockwise way, with the “thickness” of the precipitation increasing — or, a hook shape. This pattern suggests the storm is rotating and may produce a tornado. A tornado might be found at the spiral’s narrow apex.
Mar 28, 2017 · There are two primary ways that we can tell if a tornado is occurring. The first is if someone tells you that it’s happening. Storm spotters and chasers have many ways to directly call or inform the National Weather Service about an oncoming tornado.
