Weather Alert in Illinois
Tornado Warning issued May 19 at 11:10PM CDT until May 20 at 12:00AM CDT by NWS St Louis MO
AREAS AFFECTED: Monroe, IL; Jefferson, MO; St. Louis, MO
DESCRIPTION: TORLSX The National Weather Service in St Louis has issued a * Tornado Warning for... Northwestern Monroe County in southwestern Illinois... Northeastern Jefferson County in east central Missouri... Southwestern Saint Louis County in east central Missouri... * Until midnight CDT. * At 1110 PM CDT, a severe thunderstorm capable of producing a tornado was located over Hillsboro, moving northeast at 30 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows and vehicles will occur. Tree damage is likely. * Locations impacted include... Chesterfield, Wildwood, Ballwin, Kirkwood, Arnold, Manchester, Crestwood, Festus, Eureka, Columbia, Ellisville, Sunset Hills, Des Peres, Valley Park, Pevely, Dupo, Fenton, Herculaneum, Hillsboro and Byrnes Mill. This includes the following State Parks... Castlewood State Park, Mastodon Historic Site, Sandy Creek Covered Bridge Historic Site and Gov. Dunklin's Grave Historic Site. This includes the following highways... Interstate 44 in Missouri between exits 266 and 277. Interstate 55 in Missouri between exits 178 and 191.
INSTRUCTION: Move to an interior room on the lowest floor of a well-built building away from windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. Tornadoes are difficult to observe at night. Take cover now!
Want more detail? Get the Complete 7 Day and Night Detailed Forecast!
Current U.S. National Radar--Current
The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).
National Weather Forecast--Current
The Current National Weather Forecast and National Weather Map are shown below.
National Weather Forecast for Tomorrow
Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.
North America Water Vapor (Moisture)
This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Current conditions powered by WeatherAPI.com
