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Northern Mid-Atlantic Cool-Season Damaging Wind Events

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. Type of event.

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Northern Mid-Atlantic Cool-Season Damaging Wind Events

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  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?

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