1. Northern Mid-Atlantic Cool- Season Damaging Wind Events An examination of methodology and technology. Raymond Kruzdlo WFO Mount Holly, New Jersey Severe Weather Technology Conference July 12, 2005

2. Type of event  Severe level(50 kts or greater) synoptic winds combined with shallow convection in the form on long linear lines(sometimes broken)  Little or, in many cases, no lightning(limited instability)  Short duration damaging winds

3. Methodology  ROML E-8-98, Section V. Combined Synoptic and Mesoscale Events.  Uses a time-filtered approach to classify events.

4. Methodology  If the superposed convective wind event is expected to equal or exceed warning values for ONE HOUR or more, then a NPW(High Wind Warning) is recommended. If LESS THAN ONE HOUR, a SVR(Severe Thunderstorm Warning) is recommended.  Advisory levels, Wind Advisory vs. NOW

5. October 15, 2003 KDOX (Dover AFB) radar 16-level base reflectivity data at 0243 UTC on 15 October, 2003 (left), and corresponding base velocity (right).

6. October 15, 2003 KDIX radar 256-level base reflectivity data at 0428 UTC on 15 October 2003 (left) and corresponding base velocity (right).

7. Technology  WWA or GHG to compose High Wind Warning Long, tedious process  WARNGEN to compose Severe Thunderstorm Warning Simplistic and quick

8. Questions to Ask  Is the public(our customers) served? Questions from storm surveys Give public more recognition, they have become more knowledgeable Are we painting an accurate picture?  Do we need to reexamine methodology(policy)?  Do we have the technology in place?