Gregory W . Carbin

Learn More
Whether or not climate change has had an impact on the occurrence of tornadoes in the United States has become a question of high public and scientific interest, but changes in how tornadoes are reported have made it difficult to answer it convincingly. We show that, excluding the weakest tornadoes, the mean annual number of tornadoes has remained(More)
During the 2005 NOAA Hazardous Weather Testbed Spring Experiment two different high-resolution configurations of the Weather Research and Forecasting-Advanced Research WRF (WRF-ARW) model were used to produce 30-h forecasts 5 days a week for a total of 7 weeks. These configurations used the same physical parameterizations and the same input dataset for the(More)
Systematic subjective verification of precipitation forecasts from two numerical models is presented and discussed. The subjective verification effort was carried out as part of the 2001 Spring Program, a seven-week collaborative experiment conducted at the NOAA/National Severe Storms Laboratory (NSSL) and the NWS/ Storm Prediction Center, with(More)
A World Meteorological Organization weather and climate extremes committee has judged that the world's longest reported distance for a single lightning flash occurred with a horizontal distance of 321 km (199.5 mi) over Oklahoma in 2007, while the world's longest reported duration for a single lightning flash is an event that lasted continuously for 7.74(More)
The Storm Prediction Center (SPC) currently issues Experimental Enhanced Resolution Thunderstorm (ENHT) outlooks based, in part, upon probabilistic guidance from the National Centers for Environmental Prediction (NCEP) Short Range Ensemble Forecast (SREF). There is currently no method for the explicit prediction of lightning using physical means in(More)
The development of deep convection depends on the existence of Convective Available Potential Energy (CAPE). Yet, in most environments with CAPE, there is a layer of negative buoyancy, or convective inhibition (CIN), that parcels must overcome before they can respond to CAPE. Over certain regions of the world, such as the Great Plains of the U. S., both CIN(More)
Jason J. Levit*, Gregory W. Carbin, David R. Bright, John S. Kain, Steven J. Weiss, Russell S. Schneider, Michael C. Coniglio, Ming Xue, Kevin W. Thomas, Matthew E. Pyle, Morris L. Weisman NOAA/NWS Storm Prediction Center NOAA National Severe Storms Laboratory Center for Analysis and Prediction of Storms and University of Oklahoma NOAA/NWS Environmental(More)
  • 1