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Convective storm detection is the meteorological observation, and short-term prediction, of deep moist convection (DMC). DMC describes atmospheric conditions producing single or clusters of large vertical extension clouds ranging from cumulus congestus to cumulonimbus , the latter producing thunderstorms associated with lightning and thunder .
A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.
Date/Time Thumbnail Dimensions User Comment; current: 07:01, 22 May 2024: 815 × 555 (34 KB): Ks0stm {{Information |Description=Storm Prediction Center's Day 1 convective outlook for May 21, 2024, issued at 1300Z, indicating a moderate risk for severe weather over much of Iowa and nearby parts of Wisconsin, Illinois, Missouri, and southeastern Minnesota.
The Storm Prediction Center issues convective outlooks (AC), consisting of categorical and probabilistic forecasts describing the general threat of severe convective storms over the contiguous United States for the next six to 192 hours (Day 1 through Day 8). These outlooks are labeled and issued by day, and are issued up to five times per day ...
The same day, Illinois Governor J.B. Pritzker announced that an infant in the city of Chicago died after testing positive for COVID-19. [72] Infants made up a small fraction of COVID-19 related deaths worldwide, and this was the first death for any infant in the United States who tested positive for COVID-19 . [73]
A winter storm is expected to blanket much of Illinois with snow, sleet and freezing rain starting early Sunday morning. Leading up to the weekend, a Winter Storm Watch has been issued for ...
The Storm Prediction Center (SPC) issues Day 1, Day 2, and Day 3 Convective Outlooks depicting forecast areas of general (non-severe) and severe thunderstorm threats across the contiguous United States, along with a text narrative discussion consisting of a plain-language summary of the threat type(s) and timing focused on areas of highest risk ...
A dust storm in central Illinois Monday morning, May 1 created "zero visibility" conditions, triggering a fiery 72-vehicle pileup on Interstate 55 that killed seven people and injured more than 35 ...