Fall 2019 through Winter 2020 Heavy Precipitation Events

By Sheldon Kusselson

Some of the highest amounts of precipitation since the fall of 2019 and the recent flooding this winter have centered around the Pearl River area in Mississippi and extended into Alabama and portions of the southeast US. The advected layer precipitation water (ALPW) product has shown that the moisture origins and advection for many of the heavy precipitation cases at the lowest layers have been from the Gulf of Mexico and at the highest layers from the tropical eastern Pacific Ocean

Overlaying winds at each particular layer of the CIRA advected layer perceptible water

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Jan1503Advect_LPW_ALT_anim.gif

January shows the importance of using CIRAS ALMP to monitor moisture plumes

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Jan1215Advect_LPW_ALT_anim.gif

ALPW product imagery along with analysis and results for seven additional cases

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Jan0309Advect_LPW_ALT_anim.gif

10-13 February 2020 Case Centered on Mississippi and Alabama

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Feb1203Advect_LPW_ALT_anim.gif

19-20 February 2020 Cases centered on Mississippi and Alabama

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Feb2103Advect_LPW_ALT_anim.gif

14-16 October 2019 Case Centered on Mississippi and Alabama

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Oct1518Advect_LPW_ALT_anim.gif

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Oct1615Advect_LPW_ALT_anim.gif

30-31 October Case Centered on Mississippis and Alabama

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Oct3015Advect_LPW_ALT_anim.gif

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Oct3115Advect_LPW_ALT_anim.gif

22-23 December 2019 Case

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Dec2303Advect_LPW_ALT_anim.gif

16-17 December 2019 Case

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2019Dec1715Advect_LPW_ALT_anim.gif

9-11 December 2019 Case

Pattern of high level moisture from Tropical Easter Pacific and Low Level Moisture from Gulf of Mexico

Future satellite moisture product using actual information from NOAA satellites to clearly show the analysis of the converging of low level moisture

Analysis of low level moisture

CIRA Advected Layered Precipitable Water

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Mar0315Advect_LPW_ALT_anim.gif

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Mar0415Advect_LPW_ALT_anim.gif

Advect LPW tracking

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Mar0515Advect_LPW_ALT_anim.gif

Pattern of high level moisture from Gulf of Mexico since October 2019

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Mar0515Advect_LPW_ALT_anim.gif

ftp://ftp.cira.colostate.edu/ftp/Forsythe/LPW/Anim_GIF/2020Mar0615Advect_LPW_ALT_anim.gif