Storm Spotting and Public Awareness since the First Tornado Forecasts of 1948

نویسندگان

  • CHARLES A. DOSWELL
  • ALAN R. MOLLER
  • HAROLD E. BROOKS
چکیده

The history of storm spotting and public awareness of the tornado threat is reviewed. It is shown that a downward trend in fatalities apparently began after the famous ‘‘Tri-State’’ tornado of 1925. Storm spotting’s history begins in World War II as an effort to protect the nation’s military installations, but became a public service with the resumption of public tornado forecasting, pioneered in 1948 by the Air Force’s Fawbush and Miller and begun in the public sector in 1952. The current spotter program, known generally as SKYWARN, is a civilian-based volunteer organization. Responsibility for spotter training has rested with the national forecasting services (originally, the Weather Bureau and now the National Weather Service). That training has evolved with (a) the proliferation of widespread film and (recently) video footage of severe storms; (b) growth in the scientific knowledge about tornadoes and tornadic storms, as well as a better understanding of how tornadoes produce damage; and (c) the inception and growth of scientific and hobbyist storm chasing. The concept of an integrated warning system is presented in detail, and considered in light of past and present accomplishments and what needs to be done in the future to maintain the downward trend in fatalities. As the integrated warning system has evolved over its history, it has become clear that volunteer spotters and the public forecasting services need to be closely tied. Further, public information dissemination is a major factor in an integrated warning service; warnings and forecasts that do not reach the users and produce appropriate responses are not very valuable, even if they are accurate and timely. The history of the integration has been somewhat checkered, but compelling evidence of the overall efficacy of the watch–warning program can be found in the maintenance of the downward trend in annual fatalities that began in 1925.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Rating Tornado Damage: an Exercise in Subjectivity

Tornado ratings from the 1950s into the early 1970s were based almost entirely upon remote, post-event review of media articles and photographs (Schaefer and Edwards 1998). Starting in the middle 1970s, local National Weather Service (NWS) offices have assigned F-scale ratings to most tornadoes based on a blend of f irst-hand surveys by their meteorologists and anecdotal evidence from news medi...

متن کامل

Diagnostic Pressure Equation as a Weak Constraint in a Storm-Scale Three Dimensional Variational Radar Data Assimilation System

A diagnostic pressure equation is incorporated into a storm-scale three-dimensional variational (3DVAR) data assimilation system in the form of a weak constraint in addition to a mass continuity equation constraint (MCEC). The goal of this diagnostic pressure equation constraint (DPEC) is to couple different model variables to help build a more dynamic consistent analysis and therefore improve ...

متن کامل

Diagnosing the Conditional Probability of Tornado Damage Rating Using Environmental and Radar Attributes

Radar-identified convective modes, peak low-level rotational velocities, and near-storm environmental data were assigned to a sampleof tornadoes reported in the contiguousUnitedStates during 2009–13.The tornado segment data were filtered by the maximum enhanced Fujita (EF)-scale tornado event per hour using a 40-km horizontal grid. Convectivemodewas assigned to each tornado event by examining f...

متن کامل

2.3: Creating spatio-temporal tornado probability forecasts using fuzzy logic and motion variability

In this paper, we describe our approach to addressing the problem of creating good probabilistic forecasts when the entity to be forecast can move and morph. We formulate the tornado prediction problem to be one of estimating the probability of an event at a particular spatial location within a given time window. The technique involves clustering Doppler radar-derived fields such as low-level s...

متن کامل

P8.28 Possible Impacts of the Enhanced Fujita Scale on United States Tornado Data

The National Weather Service (NWS), with occasional augmentation by private assessors and universities, often uses damage surveys to determine path characteristics of wind events in general and tornadoes in particular. The results flow into a wide variety of utilizations, primarily involving: • Climatological recordkeeping, including the county-segmented Storm Data listing and its whole-tornado...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999