Monthly Archives: April 2012

Classic Severe MCS “Not-crossing” Case this morning

No detailed review here, but thought I’d just take this opportunity since we had a strong MCS (mature bow echo) approaching the west side of the southern Appalachians this morning, with a history of severe weather (see below), to remind … Continue reading

Posted in Convection | 1 Comment

Update on the Observations of mergers between Squall Lines and Isolated Supercell Thunderstorms

This is an update to a previous blog post – Convective Storm Evolution Following Mergers between Squall Lines and Isolated Supercell Thunderstorms Last fall, Dr. Adam French, provided WFO Raleigh with a presentation on his research that examined mergers between … Continue reading

Posted in Convection | Leave a comment

Update on ASOS Outages from Tropical Cyclones

This is an update to a previous blog post – Missing ASOS Observations during Hurricane Irene across eastern NC, VA, and MD Several NWS Service Assessments including those for Hurricanes Isabel (2003), Charley (2004) and Katrina (2005) noted that ASOS … Continue reading

Posted in TC Inland and Marine Winds | 3 Comments

Orographic Cirrus Event during Red Flag Warning

On 10 April 2012, an orographic cirrus event manifested itself over central and eastern North Carolina. Climatologically this was a late season event as April is typically the last month we see a deep northwest flow aloft to support the … Continue reading

Posted in Satellite | Leave a comment

Presentation on the Climatology of Convective Modes and the Near Storm Environment

A few weeks ago, SPC Lead Forecaster Rich Thompson lead a webinar and shared some of the research he has been working on with colleagues at the SPC/NSSL that identifies the convective modes and near-storm environments associated with nearly all … Continue reading

Posted in CSTAR, High Shear Low Cape Severe Wx | 1 Comment

TC Winds Conference Call Notes 4/11/12

Attended the call:  Bryce Tyner (NCSU), Frank Alsheimer (CHS), John Billet (AKQ), Mike Brennan (NHC), Jonathan Blaes (RAH), and Reid Hawkins, (ILM). Notes: Bryce presented a rough draft of the training slides to be used in the upcoming CHS Tropical … Continue reading

Posted in TC Inland and Marine Winds | Leave a comment

HSLC Case Study Methodology

1. Consult the “Case Study Responsibility” list to see your case studies. Start with the case that you think will be most beneficial to the success of the project. 2. Your home WFO or other WFOs that were involved in … Continue reading

Posted in High Shear Low Cape Severe Wx | Leave a comment