Author Archives: dbikos

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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Snow Squalls in Pennsylvania on 8 January 2020

By Dan Bikos and Bill Line On 8 January 2020 numerous snow squalls moved across Pennsylvania leading to the issuance of multiple snow squall warnings by the NWS.  One of the challenges with this event is that it spanned the … Continue reading

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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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Lake-effect snow from 7 November 2019

GOES-16 imagery depicts lake-effect snowbands over the western Great Lakes on 7 November 2019: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/7nov19/4panel&loop_speed_ms=60 Upper left: 0.64 micron visible band Upper right: 10.3 micron IR band with default color table (IR_Color_Clouds_Winter) Lower left: 10.3 micron IR band with GOES Snow … Continue reading

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Water vapor imagery in an extremely dry airmass – 31 October 2019

On 31 October 2019 a very dry airmass existed over the southwest US.  To illustrate the dry airmass, consider the sounding from Albuquerque, NM with a precipitable water amount of 0.05″ (1.27 mm): The synoptic scale pattern was characterized by … Continue reading

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