Long Range Lightning Detection Estimated Median Location Accuracy

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Long Range Lightning DetectionEstimated Median
Location Accuracy
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LOCATION ACCURACY VALIDATION

• Verified using LIS satellite mapper in a Study
  by Boeck et al., (Fall AGU Meeting, 1999)
• Verified in a Transcontinental study using the
  NLDN (Cramer and Cummins, ICAE 1999)

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Long Range Lightning DetectionBest-case
Detection (nighttime propagation)
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FLASH DETECTION EFFICIENCY

• Flash Detection Efficiency DECREASES with range
  from U.S./Canada (NLDN/CLDN only)
• 90 near coastline (day/night)
• 10 at 2000 km from coastline (day)
• 10 at 3200 km from coastline (night)
• Can improve significantly with the addition of
  sensors information from other countries

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Christmas Noreaster 2002
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Sea-level Pressure Map at 9 UTC (left panel) and
Cloud-to-ground Lightning Detected between 6 and
9 UTC (right panel) 25 December 2002.
Lightning Triggered by Upper-Level Impulse
Central Pressure - 997 mb
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Sea-level Pressure Map at 12 UTC (left panel) and
Cloud-to-ground Lightning Detected between 9 and
12 UTC (right panel) 25 December 2002.
Central Pressure - 993 mb Pressure Tendency - - 4
mb over 3 hrs
Lightning Near Deepening Low Center
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Sea-level Pressure Map at 18 UTC (left panel) and
Cloud-to-ground Lightning Detected between 15 and
18 UTC (right panel) 25 December 2002.
Central Pressure - 979 mb Pressure Tendency - - 7
mb over 3 hrs
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Pacific Extratropical Cyclone 18-19 December 2002
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Sea-level Pressure Map at 12 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 0852 and 1152 UTC (right panel) 18
December 2002.
Downstream Convection, some Lightning near Low
Center
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Sea-level Pressure Map at 18 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 1453 and 1753 UTC (right panel) 18
December 2002.
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Sea-level Pressure Map at 6 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 0253 and 0553 UTC (right panel) 19
December 2002.
Central Pressure - 980 mb Pressure Tendency - - 4
mb over 3 hrs
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Presidents Day Blizzard 16-17 February 2003
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Sea-level Pressure Map at 12 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 0853 and 1153 UTC (right panel) 16
February 2003.
Cold Front Convection
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Sea-level Pressure Map at 15 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 1153 and 1453 UTC (right panel) 16
February 2003.
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Sea-level Pressure Map at 18 UTC (left panel) and
Long Range Cloud-to-ground Lightning Detected
between 1453 and 1753 UTC (right panel) 16
February 2003.
2-4 Feet of Snow in New England with Low Pressure
remaining above 1000 mb