Category Archives: Convection

Moisture products for the tornadic storm of 4 July 2020 in Saskatchewan

Posted on July 10, 2020 by dbikos

On 4 July 2020 a thunderstorm developed in southern Saskatchewan that led to numerous tornadoes (video, picture, pictures). Let’s analyze various satellite derived moisture products in the time period leading up to the tornadic storm.  The following loop 4-panel loop: … Continue reading →

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Nighttime view of inflow feeder clouds from GOES Nighttime Microphysics RGB

Posted on March 20, 2020 by dbikos

During the overnight hours of March 18-19, 2020, there were numerous reports of severe weather (including tornadoes) in north Texas: https://www.spc.noaa.gov/climo/reports/200318_rpts.html This blog entry will focus on the storm repsonsible for the tornado reports between 0615 – 0650 UTC near … Continue reading →

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Elevated Mixed Layer event on 16 December 2019

Posted on December 16, 2019 by dbikos

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

Posted on October 21, 2019 by dbikos

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 →

Posted in Aviation Weather, Ceilings, Convection, Fog, Severe Weather, Visibility | Leave a comment

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

Posted on May 7, 2019 by dbikos

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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