Category Archives: Severe Weather

General questions and answers concerning Severe Thunderstorms.

Advected Layer Precipitable Water (ALPW) product for 5 February 2020 Severe and Flood event

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10 January 2020 – Southern Plains Severe Weather event with Elevated Mixed Layer (EML)

https://rammb-slider.cira.colostate.edu/?sat=goes-16&z=0&im=12&ts=1&st=20200110090117&et=20200110160617&speed=130&motion=loop&map=1&lat=0&opacity%5B0%5D=1&hidden%5B0%5D=0&pause=0&slider=-1&hide_controls=0&mouse_draw=0&follow_feature=0&follow_hide=0&s=rammb-slider&sec=conus&p%5B0%5D=band_10&x=5000&y=5000 Alternately, also available here: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/10jan20/band10&loop_speed_ms=60   ALPW Loop: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/10jan20/alpw&loop_speed_ms=120  

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Elevated Mixed Layer event on 16 December 2019

On 16 December 2019, SPC issued an enhanced risk of severe thunderstorms for portions of Louisiana and Mississippi: One of the favorable ingredients for this severe weather setup was the presence of an Elevated Mixed Layer (EML) which is depicted … Continue reading

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21 October 2019 – nighttime detection of fog and outflow boundaries

During the overnight hours of 21 October 2019, we analyze multiple applications of GOES imagery at night. First, we look over the northeast where fog developed.  Here is the GOES-16 nighttime microphysics product: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/21Oct19/fog&loop_speed_ms=60 We observe large areas of fog … Continue reading

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Dryline Bulges Identified in GOES-16 Split Window Difference on 30 April 2019

By Dan Bikos and Lewis Grasso During the afternoon of 30 April 2019, a dryline mixed eastward from New Mexico into the Texas panhandle, as seen in this GOES-16 visible loop with METARs overlaid: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/30apr19/vis_metars&loop_speed_ms=60 Thunderstorms initiate along various segments … Continue reading

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