My name is Marko Korosec, I was born and raised in a small village Zirje in SW Slovenia. I graduated high school here and continued with my studies at the University of Ljubljana, Faculty of Mathematics and Physics. Since my early age, I am interested in weather and photography. During my primary school classes I've already had weather instruments to observe weather and so it all began to rise. Later on I purchased an automatic weather station to get more weather data and observations of my local area - named Karst. Through several years of mesurements and daily observations I managed to collect many interesting data about southwestern Slovenia and Karst climatology.

Anyways, my interests have been rising since then and I found the most exciting moments in extreme weather such as severe winter storms, severe storms during summer, extensive rainfalls during spring and so here I am nowadays, deeply in studying severe weather events, researching them through forecasting, analysing and chasing such events. My main research areas of interest are mostly concentrated on research of mesoscale and convective dynamics, especially on severe storms with the forecasting initiation with triggering mechanism for deep moist convection on pre-existing airmass boundaries (e.g. drylines or other near-surface convergence boundaries) and the effect of rear-flank downdraft's forcing on tornadogenesis in the supercell thunderstorms. Besides researching severe weather I am also storm chasing or better said chasing the all kinds of extreme weather events while I am also enjoying taking nature and weather photographs everytime I am out there observing weather phenomena and its majestys. Storm chasing became a part of my life and I enjoy to learn something new everytime I am out on the fields. As in many other hobbies or works, hundreds of hours dedicated to chasing and collecting experiences is the key for success which goes hand in hand with understanding physical background of the storms, high-end experiences in weather forecasting and storm structure analysis, driving, etc.

I purchased my first photo camera back in year 1998. I started directly with SLR camera, it was a Canon EOS 500N, 35mm slide film camera. Since then I am shooting images with Canon cameras. I jumped into the digital world of cameras back in 2002 when I got digital camera Canon PowerShot A60, while I got more seriously envolved into DSLR cameras in spring 2005 when I purchased a Canon EOS 300D DSLR. Since then I had no reason to shot on a slide films anymore, though it has to be said that I learned quite a lot on classic 35mm slide film camera. But with the digital nature of SLR cameras, it was like a changing world. Shooting hundreds of photos with not being worried if I took too much of them, as shots are free. Two years later I wanted more and so I did purchase a new DSLR camera, a semi-professional camera Canon EOS 30D DIGITAL. I also own few lenses, currently I have Canon 75-300m, Canon 28-80mm, Sigma 10-20mm and Sigma 17-35mm. Right after I got Canon EOS 30D, I started shooting in RAW format and even it was a hard one at the beginning, I would never go back shooting in JPEG or anything else, RAW format just gives you the open space in post-processing photographs and you can do whatever you want with them. Just awhile ago, in early spring 2009, I purchased a new camera, a professional Canon EOS 5D mark II DIGITAL camera. Finally I am back to fullframe camera with 35mm sensor and no crop factor at all. I am self-taught photographer since my first click on the camera's trigger with a strong passion for creating photographs with all the dramatic moments and feelings experienced while chasing. Sharing my photographs with the world was the reason to create an online website which you're browsing right now. Website Weather-Photos.net shares a photo gallery, a blog, detailed chasing logs with weather analysis, cloud atlas and much more. Please, enjoy your stay!

Since 2005 I am employed as a supervisor of Road Weather Information System (RWIS) at Slovenian main motorway company DARS. The system is used to monitor weather conditions on the motorways through whole Slovenian road network with the main focus on optimization of winter maintenance (called MDSS - Maintenance Decision Support System) which is the most important to prevent road blocks and traffic jams with the daily moving international transport in the winter period. The Slovenian motorway company's RWIS system holds more than 50 road weather stations from different world's professional meteorological equipment providers such as VAISALA and BOSCHUNG. Both of these two companies are the world's top RWIS system equipment companies.

In late 2006 I began with the project of rainfall measurements across southwestern Slovenia along main mountain barriers which is multi-annual project with an investigation of a precipitation regime of south-west Slovenia and its properties during the different precipitation events through the entire year. The main focus of research in this project is to figure out how a variety of events (e.g. Genoa low, northern Mediterranean cut-off low, classic SW flow, etc) affect on the hydrological regime of the south-west Slovenian ground waters network and furthermore into flooding events. With my faculty colleague we created a network of more than 10 rain gauges to collect monthly rainfall data while special and extreme events are monitored closely and obsservations are made more often.

During the summer of 2007 I joined the European project called ESTOFEX - The European Storm Forecast Experiment which is an initiative of a team of European meteorologists, meteorology students and trained enthusiasts, who intend to learn how to forecast severe convective storms in Europe. The main goals of ESTOFEX projects are daily issueing forecasts of severe convective weather in Europe, an enhance of understanding severe storms and to promote collection of extreme weather events into the European Severe Weather Database (ESWD). I have become an official forecaster for ESTOFEX during August 2009, so since then one will be able to see my name under some issued forecasts, depends on the scheadule. More about this project can be found on the official website of ESTOFEX project.

Later in 2007 I also started a project SKYWARN Slovenia which is, in the first step, a database collection of extreme severe weather events such as large hail, severe wind gusts, extensive rainfalls, tornadoes, etc., for the Slovenian territory. Such database actually does not exist in our country or our national collection is pretty poor with data so this project is a big open opportunity to build a climatology of extreme events across Slovenia. Furthermore, this project will be upgraded and in partnership with an Environmental Agency of the Republic of Slovenia (EARS) and Administration of the Republic of Slovenia for Civil Protection and Disaster Relief (ACPDR) regarding protection against natural and other disasters such as extreme weather events.

In the last years I have attended on several European conferences with scientific papers and talks regarding severe weather with photography and road weather information systems. My photographs have been published in many magazines, books and other papers. More details about my publications, talks and other contributions can be found below. With my passion of storm chasing, I have been chasing since year 2000, first mostly in the Slovenian territory which I extended outside the borders in the last years, especially over the Po valley in northern Italy and western half of Pannonia plains which both have great plain terrain and are often under favorable conditions for severe storms. I have also been chasing severe storms in the Tornado Alley (USA) since spring 2006, where I spent whole May on the Plains each year and observed some of the most powerful storms with spectacular structures, hail and tornadoes across Tornado Alley. A website InflowJet.net has been launched for this purpose which is dedicated to US severe weather, throughout weather forecasting, case studies, research and storm chasing. In my several years long chasing career I have experienced hundreds of spectacular storms with all accompanied phenomena like very large hail (tennis ball size) and tornadoes (almost 20 of them), extreme winds (180-200km/h Bora winds), snowfalls, etc. The most memorable events are likely three; first one would be without a doubt a tornadofest with 7 tornadoes on May 22nd 2008 in Kansas, then the second one would be a massive structured nighttime supercell with insane hail chasing me in central Friuli region on August 16th 2006 and the third one would be an incredible midnight supercell with photogenic tornado over water in Trieste gulf on August 8th 2008 which hit me on the coast with severe wind gusts exceeding 150km/h.

  SKYWARN Slovenija
  ESTOFEX - The European Storm Forecast Experiment
  Precipitation regime of SW Slovenia and its properties

  SKYWARN Slovenia - Chairman (2007 - present)
  ESTOFEX - The European Storm Forecast Experiment (2007 - present / official lead forecaster since August 2009)
  UMFVG - Unione Meteorologica Friuli Venezia Giulia (2007 - present)
  Slovenian Meteorological Society (SMD - Slovensko Meteorolosko Drustvo) (2009 - present)

 IVACIC Matjaz, BEDEN Andrej, SAJN SLAK Alenka, KRSMANC Rok, CARMAN Samo, KOROSEC Marko (2010); "Road Weather Information Systems (RWIS) in Slovenia";

 KOROSEC Marko, SERETINEK Blaz; (2008): Nevihtni sistem 13.07.2008 - Tornado da ali ne?;

 KOROSEC Marko, CARMAN Samo; (2008): Nase izkusnje z vzpostavitvijo Cestno-Vremenskega Informacijskega Sistema (CVIS) na avtocestah v Republiki Sloveniji;

 KOROSEC Marko, CARMAN Samo; (2008): Experiences with established RWIS-Road Weather Information System on the highways in the Republic of Slovenia;

 KOROSEC Marko; (2007): "Worldwide Severe Weather in pictures" poster;

 KOROSEC Marko; (2007): Selected photographs/prints of severe weather allover the World from 2005-2007; used for promoting material on conference "Thunderstorms 2007";

 KOROSEC Marko; (2006): Enovit nadzor nad vremenskim stanjem na slovenskih avtocestah - cestno vremenski informacijski sistem / Uniformity of the weather conditions on the Slovenian motorways - Road Weather Information System;

 PIRC Jure, KOROSEC Marko; (2010): Vodenje prometa v vipavski dolini v primeru burje / Traffic Management in Vipavska valley in case of strong Bora wind;

 KOROSEC Marko; (2010): Vodenje prometa na HC Razdrto - Vrtojba v močni burji s pomočjo cestno-vremenskega informacijskega sistema / Traffic Management with Road Weather Information System along motorway Razdrto - Vrtojba in case of strong Bora winds;

 KOROSEC Marko, CEDILNIK Jure; (2009): Case study: Case study: Extensive wind damage across Slovenia on July 13th, 2008;

 KOROSEC Marko; (2009): Case study: A severe hailstorm and strong downbursts over northeastern Slovenia on June 16th 2009;

 KOROSEC Marko; (2009): Case study: An isolated severe storm with giant hail hit Slovenian capital city Ljubljana on May 25th 2009;

 KOROSEC Marko; (2008): Case study of severe hailstorms and downburst damage across Slovenia on 29th June 2006;

 KOROSEC Marko; (2007): Severe storm videos contribution to "Storms of 2007" project, videos recorded during storm chasing in USA during May 2007;

 KRASOVIC Zana, KOROSEC Marko (2010); Zimsko vzdrževanje avtocest s pomočjo cestno-vremenskega informacijskega sistema (CVIS) / Winter road maintenance with help of Road Weather Information System (RWIS);

 KOROSEC Marko; (2009): Slovenian Road Weather Information System (RWIS) of DARS d.d. - for PIARC / Technical Committee C.4 - Road Tunnel Operations, Working Group 1; Improve tunnel operation and maintenance;

 KOROSEC Marko; (2009): DARS cestnovremenski IS;

 KOROSEC Marko, CARMAN Samo; (2008): Experiences with established RWIS-Road Weather Information System on the highways in the Republic of Slovenia;

 KOROSEC Marko; (2007): Introduction of Road Weather Information System (RWIS) of DARS d.d. - for PIARC / World Road Association;

 KOROSEC Marko; (2006): Enovit nadzor nad vremenskim stanjem na slovenskih avtocestah - cestno vremenski informacijski sistem / Uniformity of the weather conditions on the Slovenian motorways - Road Weather Information System;

 KOROSEC Marko; (2006): Storm chasing in Tornado Alley, USA;

 KOROSEC Marko; (2010): News: Veter podira drevesa in odnaša strehe / Trees down and vlown off roofs due to strong winds;

 KOROSEC Marko; (2010): News: Vozniki naj odložijo za sredo načrtovano pot / Drivers should delay for Wednesday planned route;

 KOROSEC Marko; (2010): News: Pozor pred orkansko burjo / Hurricane force Bora winds alert;

 KOROSEC Marko; (2010): Interview: Gost izbira glasbo / Guest choice of music;

 KOROSEC Marko; (2010): Interview: Lovec na tornade in burjo / The Storm chaser and Bora wind chaser;

 KOROSEC Marko; (2010): Article: "Vremenska strast: Marko jaga nevihte / Weather passion: Marko chases storms";

 KOROSEC Marko; (2010): Article: Rekord - 220 kilometrov na uro / Record - 220 kilometres per hour;

 KOROSEC Marko; (2010): Article: Jutri orkanska burja in sneženje z zameti / Hurricane force Bora and snow drifts tomorrow;

 KOROSEC Marko; (2010): Article: Rdeči alarm zaradi orkanske burje / Red alert due to hurricane force Bora;

 KOROSEC Marko; (2010): Article: Sunki burje bodo dosegli 150 do 200km/h / Bora winds will reach 150 to 200km/h;

 KOROSEC Marko; (2010): Article: Sneg in sunki burje med 150 in 200 km/h / Snowing and strong bora winds between 150 and 200 km/h

 KOROSEC Marko; (2010): Article: Razglasitev alarma: Čaka nas ekstremna burja / Alarm issued: we expect hurricane force Bora winds;

 KOROSEC Marko; (2010): Article: Vozniki naj odložijo za sredo načrtovano pot / Drivers should delay for Wednesday planned route;

 KOROSEC Marko; (2010): Article: Sunki burje do 200 km/h in od jutri rdeča stopnja vremenske ogroženosti / Red Alert and Bora wind gusts up to 200 km/h

 KOROSEC Marko; (2010): Article: Sunki burje tudi do 200 km/h / Bora wind gusts up to 200 km/h

 KOROSEC Marko; (2010): Article: Na Primorskem pričakujejo močno burjo, po Sloveniji sneg / Strong bora winds in coastal areas, snow across the rest of Slovenia;

 KOROSEC Marko; (2009): Article: V mrazu zmrznil nos / The nose freezes in the extreme cold;

 KOROSEC Marko; (2009): Article: Cestno-Vremenski Informacijski Sistem (CVIS) / Road Weather Information System (RWIS);

 KOROSEC Marko; (2009): Article: Raziskovanje neviht v osrčju ZDA / Research of thunderstorms in the heart of USA;

 KOROSEC Marko; (2009): Short interview: "Tornado, almeno un anno per i risarcimenti - fotografo: Marko Korosec";

 KOROSEC Marko; (2009): Interview: Marko Korosec - lovec na tornade / Tornado chaser;

 KOROSEC Marko; (2008): Interview: Lovec na tornade / Tornado chaser;

 KOROSEC Marko; (2008): Interview: Lovec na tornade / Tornado chaser;

 KOROSEC Marko; (2009): MeteoTriVeneto 1st place award winner of "Meteoscatti Triveneti indetto dall'Associazione MeteoTriveneto" contest for selected image of extreme lightning strikes taken over Koper in Slovenia on August 23th, 2008;

 KOROSEC Marko; (2007): UMFVG's 1st place award winner for selected images of severe weather events allover the World (WWSW - World Wide Severe Weather);

 KOROSEC Marko; (2006): 2nd place award for deep snow photograph taken at Sviscaki from January 19th, 2006;

 KOROSEC Marko; (2004): Photo of the week award + 2nd place on the top100 photographs on web photography portal SLO-FOTO.NET for the lightning photograph taken over Trieste gulf from October 15th, 2004;

 KOROSEC Marko; (2010): Tornado photograph taken in Kansas, USA from May 23rd, 2008;

 KOROSEC Marko; (2010): Photograph of extreme lightning strikes taken over Koper in Slovenia on August 23th, 2008;

 KOROSEC Marko; (2010): Photograph of photogenic shelf cloud in Texas Panhandle, USA on May 6th, 2008;

 KOROSEC Marko; (2010): Photograph of explosive convection within the supercell over Venice, Italy on July 17th, 2009;

 KOROSEC Marko; (2010): Photograph of nighttime tornado over Trieste gulf, Italy on August 8th, 2008;

 KOROSEC Marko; (2010): Photograph of deep black ice layer taken in Cebulovica, Slovenia on January 9th, 2010;

 KOROSEC Marko; (2010): Photograph of deep black ice layer taken in Cebulovica, Slovenia on January 9th, 2010;

 KOROSEC Marko; (2009): Photograph of extreme lightning strikes taken over Koper in Slovenia on August 23th, 2008;

 KOROSEC Marko; (2009): Cumulonimbus cloud photograph taken near Postojna, Slovenia from June 27th, 2008;

 KOROSEC Marko; (2009): Lightning strike photograph used for front cover taken in Socerb castle, Slovenia from 23th August, 2008;

 KOROSEC Marko; (2009): Mesocyclone with wall cloud photograph taken near Oderzo, Italy from June 6th, 2009;

 KOROSEC Marko; (2009): Whale's Mouth photograph taken near Rivignano, Italy from June 11th, 2008;

 KOROSEC Marko; (2009): Two photographs of strong mesocyclone with funnel cloud taken near Oderzo in Friuli on June 6th, 2009;

 KOROSEC Marko; (2009): Two photographs of strong mesocyclone with funnel cloud taken near Oderzo in Friuli on June 6th, 2009;

 KOROSEC Marko; (2009): Two photographs of strong mesocyclone with funnel cloud taken near Oderzo in Friuli on June 6th, 2009;

 KOROSEC Marko; (2009): Photographs for online Canon's contest for the best weather photography;

 KOROSEC Marko; (2009): Photograph of mammatus clouds taken near Del Rio in Texas, USA on May 14th, 2006;

 KOROSEC Marko; (2009): Thunderstorm photograph taken in Zirje on 18th May 2005 used as book's back-cover photography: "Žirje - vasica ob suhi reki";

 KOROSEC Marko; (2009): Tornado over water / Waterspout in Trieste gulf photograph from August 8th, 2008;

 KOROSEC Marko; (2008): Use of high-resolution lightning photograph in digital format taken over Koper, Slovenia from 23rd August 2008; used for promoting material - photograph named: "Suha razelektritev";

 KOROSEC Marko; (2008): Tornado photograph taken in Kansas, USA from May 23rd, 2008;

 KOROSEC Marko; (2008): Lightning strike in Trieste gulf photograph from August 25th, 2008;

 KOROSEC Marko; (2008): Tornado over water / Waterspout in Trieste gulf photograph from August 8th, 2008;

 KOROSEC Marko; (2008): Lightning strike photograph taken in Trieste gulf from July 13th, 2008;

 KOROSEC Marko; (2008): Photograph of supercell with mesocyclone (mothership) taken in Texas, USA from May 23rd, 2007;

 KOROSEC Marko; (2008): Photographs of lightning and tornado over water used in video interview;

 KOROSEC Marko; (2008): Photographs of tornado damage in village Gozd from July 13th, 2008;

 KOROSEC Marko; (2007): Sunset photograph taken on mt. Nanos from 27th October 2005; used as book cover: Soncna energija v Sloveniji / Solar Energy in Slovenia;

 KOROSEC Marko; (2007): Winter photograph taken in village Retje near Loski potok from 18th November, 2007;

 KOROSEC Marko; (2007): Lightning strike photograph taken over Trieste gulf from October 15th, 2004;

 KOROSEC Marko; (2007): Lightning strike photograph taken in Zirje from June 12th, 2004;

 KOROSEC Marko; (2007): Supercell storm photograph winter photograph taken near Villese, Friuli from July 9th, 2007;

 KOROSEC Marko; (2006): Photograph of deep snow cover on weather station taken in Zirje from 30th December, 2005;

 KOROSEC Marko; (2006): Use of high-resolution lightning photograph in digital format taken near Villese, Friuli from August 14th 2006; used for promoting material - photograph named: "Neukrocena energija";

 KOROSEC Marko; (2005): Photograph of Poljanska Sora river taken in Skofja loka from December 5th, 2005;

 KOROSEC Marko; (2005): Use of two high-resolution rainbow/lightning photographs in digital format taken iz Zirje from November 4th 2000 (rainbow photograph) and from 15th October 2004 (lightning photograph); used for promoting material;

 KOROSEC Marko; (2004): Use of high-resolution lightning photograph in digital format taken over Trieste gulf from October 15th 2004; used for promoting material;

 KOROSEC Marko; (2004): Photographs of severe weather used on web portal METEONET from Netherlands;

 KOROSEC Marko; (2004): Use of high-resolution lightning photograph in digital format taken over Trieste from June 12th 2004;

Last updated: June 1st, 2010

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