Gap-Filling Mobile Radar Observations of a Snow Squall in the San Luis ValleySource: Monthly Weather Review:;2018:;volume 146:;issue 008::page 2469DOI: 10.1175/MWR-D-17-0323.1Publisher: American Meteorological Society
Abstract: AbstractOn 24 January 2017, a convective snow squall developed in the San Luis Valley of Colorado. This squall produced rapidly varying winds at San Luis Valley airport in Alamosa, Colorado, with gusts up to 12 m s?1, and an associated visibility drop to 1.4 km from unlimited in less than 10 min. This snow squall was largely undetected by the operational WSR-88D network because of the Sangre de Cristo Range of the Rocky Mountains lying between the valley and the nearest WSR-88D in Pueblo, Colorado. This study presents observations of the snow squall from the X-band NOAA X-Pol radar, which was deployed in the San Luis Valley during the event. These observations document the squall developing from individual convective cells and growing upscale into a linear squall, with peak radial velocities of 15 m s?1. The environment conducive to the development of this snow squall is examined using data from the High-Resolution Rapid Refresh model, which shows an environment unstable to ascending surface-based parcels, with surface-based convective available potential energy (SBCAPE) values up to 600 J kg?1 in the San Luis Valley. The mobile radar data are integrated into the Multi-Radar Multi-Sensor (MRMS) mosaic to illustrate both the large improvement in detectability of this event gained from a gap-filling radar as well as the capability of MRMS to incorporate data from new radars designed to fill gaps in the current radar network.
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contributor author | Rosenow, Andrew A. | |
contributor author | Howard, Kenneth | |
contributor author | Meitín, José | |
date accessioned | 2019-09-19T10:04:37Z | |
date available | 2019-09-19T10:04:37Z | |
date copyright | 5/9/2018 12:00:00 AM | |
date issued | 2018 | |
identifier other | mwr-d-17-0323.1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4261259 | |
description abstract | AbstractOn 24 January 2017, a convective snow squall developed in the San Luis Valley of Colorado. This squall produced rapidly varying winds at San Luis Valley airport in Alamosa, Colorado, with gusts up to 12 m s?1, and an associated visibility drop to 1.4 km from unlimited in less than 10 min. This snow squall was largely undetected by the operational WSR-88D network because of the Sangre de Cristo Range of the Rocky Mountains lying between the valley and the nearest WSR-88D in Pueblo, Colorado. This study presents observations of the snow squall from the X-band NOAA X-Pol radar, which was deployed in the San Luis Valley during the event. These observations document the squall developing from individual convective cells and growing upscale into a linear squall, with peak radial velocities of 15 m s?1. The environment conducive to the development of this snow squall is examined using data from the High-Resolution Rapid Refresh model, which shows an environment unstable to ascending surface-based parcels, with surface-based convective available potential energy (SBCAPE) values up to 600 J kg?1 in the San Luis Valley. The mobile radar data are integrated into the Multi-Radar Multi-Sensor (MRMS) mosaic to illustrate both the large improvement in detectability of this event gained from a gap-filling radar as well as the capability of MRMS to incorporate data from new radars designed to fill gaps in the current radar network. | |
publisher | American Meteorological Society | |
title | Gap-Filling Mobile Radar Observations of a Snow Squall in the San Luis Valley | |
type | Journal Paper | |
journal volume | 146 | |
journal issue | 8 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/MWR-D-17-0323.1 | |
journal fristpage | 2469 | |
journal lastpage | 2481 | |
tree | Monthly Weather Review:;2018:;volume 146:;issue 008 | |
contenttype | Fulltext |