A slow moving low pressure system will bring the threat for heavy rainfall, flash flooding, and a few strong to severe thunderstorms into Tuesday. The main threat areas include the southern Mid Atlantic and Southeast U.S. Excessive runoff may lead to flooding of low lying areas, rivers, and streams. Read More >
This page will provide an overview of severe weather climatology for the Northern Indiana (IWX) CWA since 1980. The basis for this study was based on the need to update a paper published in 1999 after the Northern Indiana forecast office had just opened. This paper explored severe weather history and trends for the period of 1950-1997. An electronic version of this technical publication (except for the graphs and tables) can be found by clicking the following link: SEVERE WEATHER CLIMATOLOGY FOR THE NEW NWSO NORTHERN INDIANA COUNTY WARNING AREA. An updated climatology paper is in the editing stages and a link will be posted as soon as it is available.
This updated climatology looks at severe weather for the IWX CWA from 1980 to 2010. The 31 year period will be used to look at trends and statistics in the more modern era of storm data collection and archiving. Since the modernization of the National Weather Service (NWS) in the late 1980s and early 1990s, storm data entry has evolved and become more standardized than in years prior. Advances in technology have also led to an increase of storm reporting. The combination of these factors has led to an increase in severe weather reports to the NWS. Therefore, it is necessary to get an updated picture of severe weather climatology in the modern reporting era. The weather variables in this climatology are tornadoes, severe winds (58 mph or greater), severe hail (1" in diameter or larger), flooding, and lightning. Each one of these weather elements was looked at in detail to determine favorable times of occurence by month and time and day.
|Storm Reports 1980-2010||Storm Reports Piechart||Weather Related Fatalities|
For more detailed historical information and maps of tornado tracks for each year and county, please visit our IWX Tornado Tracks webpage.
|Tornado Paths||Tornadoes per County||Tornadoes per County bar graph|
|Tornado Strength by County||Tornado Strength by Month||Tornado Strength by Season|
|Tornado Frequency by Month||Tornado Frequency by Hour|
|Wind Reports plot||Wind Reports per County||Wind Reports per County bar graph|
|Wind Frequency by Month||Wind Frequency by Hour|
|Hail Reports plot||Hail Reports per County||Hail Reports per County bar graph|
|Hail Frequency by Month||Hail Frequency by Hour|
|Flood Events per County||Flood Events per County bar graph|