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During these drills, the National Weather Service issues test tornado warnings, and local Emergency Alert Systems and/or NOAA Weather Radio (normally as a Required Weekly Test or Required Monthly Test; Live Tornado Warning Codes can only be used if a waiver from the FCC is granted since "Live Code Testing" is prohibited per regulations) are ...
To avoid being powerless and without heat during severe storms, many people often turn to a generator. It is wise to know how to operate a generator during a power outage to keep your loved ones safe.
Airport weather warning AWW – Addresses weather phenomena (including but not limited to surface wind gusts around or above 40 knots (46 mph), freezing rain, heavy snow or thunderstorms producing cloud-to-ground lightning within 5 miles [8.0 km] of the airport and/or 1 ⁄ 2-inch [1.3 cm] hail) capable of adversely affecting ground operations ...
An observation from the National Weather Service Chicago, Illinois at Lewis University Airport, taken at around 4z (11 p.m. CDT), revealed MUCAPE values of 1556 J/kg, as well as extreme storm-relative helicity values of 644 m 2 /s 2 at 0–1 kilometers and 857 m 2 /s 2 at 0–3 kilometers, where storm-relative values of helicity above 150 m 2 ...
A tree uprooted by a weak tornado in Chicago on July 14. The Storm Prediction Center outlined a slight (2/5) risk convective outlook at 13Z, outflow from previous mesoscale convective systems had manifested as outflow boundaries over Iowa and Illinois, which were expected to be conducive to the formation of serial mesoscale convective systems that evening. [21]
Some weather experts have said that a combination of warmer winters and warmer waters in the Gulf of Mexico could mean more tornadoes in places such as Illinois. The state experienced 118 ...
The National Weather Service Weather Forecast Office in Jackson, Mississippi, defines a tornado emergency as "an enhanced Tornado Warning that will be issued by NWS Jackson when there is a heightened risk for a killer or violent tornado of EF3 rating or greater." [30] Their criteria for issuing a tornado emergency are:
“During these conditions, fire is very easily spread,” a local meteorologist said. Red flag weather warning issued for portion of southwestern Illinois. Here’s what that means