SPC Severe Thunderstorm Watch 542
WW 542 SEVERE TSTM IL IN 160255Z – 160900Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 542 NWS Storm Prediction Center Norman OK 1055 PM EDT Mon Jul 15 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of East central Illinois West central into central Indiana * Effective this Monday night and Tuesday morning from 1055 PM until 500 AM EDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph likely Isolated large hail events to 1 inch in diameter possible A tornado or two possible SUMMARY...A well-formed, bowing squall line with a history of damaging winds will continue east-southeastward from Illinois into Indiana through the early morning hours. Wind damage and severe wind gusts of 60-75 mph will be the main threat, though isolated large hail near 1 inch in diameter and a tornado or two with embedded circulations will also be possible. The severe thunderstorm watch area is approximately along and 45 statute miles north and south of a line from 40 miles south southwest of Decatur IL to 40 miles northeast of Indianapolis IN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 539...WW 541... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 30040. ...Thompson
