1. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Road Weather Management Workshop April 9, 2001 Robert G. Hallowell MIT Lincoln Laboratory Aviation Sensors and Products for Hurricane Applications

2. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Outline Overview of Aviation Weather Products (MIT/LL) Hurricane Applications –Advantages of Integrating Sensors –Wind Estimations –Automated Storm Tracking Summary

3. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Civil Aviation Weather Systems

4. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Integrated Terminal Weather System (ITWS)

5. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf ITWS Products Via Digital Data Feed Graphics Products Text Products Wind Profile Configured Alerts Terminal Wx Text Hazard Text Alerts Microbu rstWind Shear Gust Front ETI TornadoAlerts Lightning AP Status

6. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Multi-Radar Integration Fundamental difference: FAA provides radar-derived products directly to non-meteorologist users without any meteorologist review –Improved NEXRAD data quality (AP, test patterns, clutter) –Mosaicked Radar Images (NEXRAD, TDWR, WSP) –Automated Dual-doppler 3-D Winds Products –Result: More reliable estimates of rainfall Better precipitation tracking Improved overall coverage Some Challenges: –TDWR focus on airport –ASR-9 fan beam (not easily merged with TDWR/NEXRAD)

7. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf ITWS: Automated Radar Data Quality Editing Tampa NEXRAD after AP editing WARP mosaic algorithm Melbourne NEXRAD after AP editing ITWS mosaic algorithm

8. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf ITWS: Dual-Doppler Winds

9. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Terminal Forecast Algorithm Architecture Radar data Scale separation Track vectorsProduct display Automated Scoring NEXRAD radar

10. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Terminal Convective Weather Forecast Product -30 -20 -10 Current Weather + 10 + 20 + 30 + 40 + 50 + 60 min Forecast Key features: Automated scoring of past performance Updates every 5-6 minutes Uses NEXRAD VIL data Successful operational use at Dallas, Orlando, Memphis, and New York Technology development funded by FAA Aviation Weather Research Program (AWR)

11. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Hurricane Erin 8/2/1995 Category I Hurricane Precipitation Intensity Based on NEXRAD Movie Loop 0500Z to 1100Z

12. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Hurricane Erin - 60 Min Forecast Verification of 60 minute forecast –Weak Precip or Stronger –Within 5 NM –Overall CSI score

13. MIT Lincoln Laboratory RGH 4/9/01 Hurricane Conf Summary Multiple FAA weather radars and derived products coming on-line (ITWS 2002-2004, CIWS 2001, MIAWS 2001-2003) FAA/NWS radar integration has been extremely successful operationally for the FAA ITWS winds products (microbursts, 3-d winds) could be enhanced for hurricane applications Storm tracking technology (0-2 hours) could assist in early flood warnings