Abstract: The two most prominent surface pressure features associated with squall lines are 1) a surface mesohigh, centered within the heavy-rain region, and 2) a wake low, located at the back edge of the trailing area of light ...

Abstract: An experiment was conducted at the Storm Prediction Center (SPC) to assess the accuracy of subjective probability forecasts for tornadoes within individual convective watch areas. Probability forecasts for one or more and ...

Abstract: Rawinsonde observations have been used to determine the flow structure in the vicinity of the tropopause atop the trailing stratiform precipitation region of an intense midlatitude squall line. Computations of vertical ...

Abstract: Forecasters at the Storm Prediction Center (SPC) were faced with many challenges during the 3 May 1999 tornado outbreak. Operational numerical forecast models valid during the outbreak gave inaccurate, inconsistent, and/or ...