General LLWAS Presentation

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Wind Shear Detection Products"Wind Shear/Microburst Detection Alert Content!" Description: Detection of windshear (convective & clear-air) " Inputs: Surface Anemometers (later radar radial velocity)" Alert Content: Type – Intensity – Location" Terminology: “Windshear” or “Microburst”; Gains or Losses" Alert Coverage: Out to 3 nautical miles from runway (max)" Alert Resolution: 1 nautical mile (~2 km)" Alert Update Rate: 10-15 seconds (depends on networksize) for <strong>LLWAS</strong> and 60 seconds for radar""Copyright UCAR 2012, All rights reserved"
Wind Shear Alert Types"Alert Intensity Thresholds!!Wind Shear Alert: 15 to 29 knot wind speed loss, orgreater than 15 knot wind speed gain. ""Microburst Alert: 30 knot or higher wind speed loss. "Copyright UCAR 2012, All rights reserved"
Page 1 and 2: Wind ShearHazards to Aviation Opera
Page 3 and 4: BackgroundIn 1982, the FAA, NCAR an
Page 5 and 6: Microburst MorphologyMicroburst div
Page 8 and 9: FAA Wind Shear System Timeline 1982
Page 10 and 11: Wind Shear Detection Systems"JAWS r
Page 12 and 13: Original LLWASThe original LLWASOnl
Page 14 and 15: FAA Windshear Program After the JAW
Page 16 and 17: LLWAS & TDWR User Group The FAA & T
Page 20 and 21: Alert Message Content"!Wind Shear S
Page 22 and 23: Wind Shear Detection System Display
Page 24 and 25: Basic Alert Process" When a detecte
Page 26 and 27: LLWAS Wind Shear Detection"aircraft
Page 28 and 29: Detectability Definition An in situ
Page 30 and 31: Wind Shear System Effectivities - G
Page 32: Summary There are pros and cons for

General LLWAS Presentation

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