AMS Severe Local Storms STAC
banner
ams-sls-stac.bsky.social
AMS Severe Local Storms STAC
@ams-sls-stac.bsky.social
Bluesky account for the AMS Severe Local Storms STAC. Follow for info related to AMS severe weather updates, SLS conferences, and more! (monitored by members of the SLS STAC)
Houser: very high-res simulated tornado paths affected by terrain, not by land cover; adding idealized or realistic terrain results in stronger tornadoes at some point in life cycle; roughness modulates height of max winds #AMS21Meso
June 25, 2025 at 3:30 PM
Berman: overshooting top area is most closely related to environmental shear (via updraft core area), while overshooting top depth is mostly determined by upper troposphere/lower stratosphere static stability #AMS21Meso
June 25, 2025 at 3:12 PM
Fu: simulations addressing complications to RKW framework when low-level jets interact with cold pools; faster LLJ and lower LLJ altitude associated with stronger convective systems #AMS21Meso
June 25, 2025 at 3:01 PM
Faletti: EnKF WoFS-TORUS analyses of 2022 Morton, TX tornadic supercell; accurate representation of complex supercell evolution, including cyclic low-level mesocyclones; tradeoffs for reflectivity assimilation #AMS21Meso
June 24, 2025 at 9:07 PM
De Bruin: UAS + mesonet + radar analysis of supercell left flanks during TORUS. Both density current and convergent boundary structures found; vortex sheets located just behind surges and strongest at sfc; horizontal w gradients at boundaries contribute to streamwise vorticity #AMS21Meso
June 24, 2025 at 8:46 PM
Davis: observed cold pool structures, including wind perturbations, vary with convective intensity/organization; cold pool motions closely correlated with predicted density current motions #AMS21Meso
June 24, 2025 at 8:16 PM
Schwartz: results from medium-range MPAS convection-allowing ensembles; benefits of CAM resolution greater in weakly forced regimes (like spring 2023) vs. strongly forced (like spring 2024) #21Meso
June 23, 2025 at 10:46 PM
Garcia: synoptic patterns of tor/nontor RM supercells via self-organizing maps of midlevel height fields; high-amplitude troughs = higher tornado probability, and faster jets = higher conditional % significant tornadoes #21Meso
June 23, 2025 at 8:12 PM
Britt: QLCS tornado prediction in WoFS with QTor product: 0-3-km line-normal shear, 0-1-km line-parallel shear, and a factor representing local tortuosity of the QLCS #21Meso
June 23, 2025 at 5:06 PM
McDaniel: applying a U-net to radar data for QLCS tornado prediction; using probability-matched means to assess input skill; evaluating single- vs. dual-pol inputs #21Meso
June 23, 2025 at 5:04 PM
Brown: three-ingredients method for QLCS tornado forecasting should reduce its line-normal shear threshold and account for low-level line-parallel shear; regimes of cyclonic-only vs. mixed cyclonic/anticyclonic mesovortices by shear types #21Meso
June 23, 2025 at 5:03 PM
Peters: squall lines less efficient at converting buoyancy to upward acceleration than isolated updrafts; increasing updraft tilt makes them even less efficient; peak intensity/minimum dilution when cold pool/shear balance is near 1 #21Meso
June 23, 2025 at 5:01 PM
Yang: n=2 gravity waves ahead of simulated MCSs initiate new convection downstream, with feedback effect on intensity #21Meso
June 23, 2025 at 4:59 PM
Wade: derecho vs. non-derecho MCS environments in the US; deeper layers of shear, like 1-9-km AGL, appear most useful #21Meso
June 23, 2025 at 4:58 PM