IEM VTEC Product Browser
This application allows easy navigation of National Weather Service issued products with Valid Time Event Coding (VTEC).
13 Nov 2024 Update: The tool was updated to use non-hash link style URLs. A shim is in place to translate the old URLs to the new ones, so nothing should be broken (famous last words). This was done to allow the HTML5 History API to provide a better user experience.
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2025 [KLOT] CHICAGO Extreme Cold (EC) Warning (W) Number 1
Listing of Counties/Parishes/Zones Included in Product
RADAR Composite at Issuance Time
Storm Based Warning History
739 WWUS73 KLOT 210803 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 203 AM CST Tue Jan 21 2025 ILZ003>006-008-010-011-019-211800- /O.UPG.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ /O.NEW.KLOT.EC.W.0001.250121T0803Z-250121T1800Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle- Including the cities of Crystal Lake, Byron, La Salle, Ottawa, Mendota, Waukegan, Marseilles, Belvidere, Dixon, Rockford, Gurnee, Streator, Sycamore, Mundelein, Rochelle, Oregon, McHenry, Woodstock, Buffalo Grove, DeKalb, and Algonquin 203 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL, and McHenry Counties. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ012-013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019- 211815- /O.CON.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ Kane-DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford- Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Peotone, Portage, Hammond, Mokena, Pontiac, Northbrook, Downers Grove, Oak Forest, Fowler, Plainfield, Oak Lawn, Morris, Gary, Kentland, Dwight, Rensselaer, Calumet City, Beecher, Crete, Morocco, Joliet, Bradley, Lemont, Wilmington, Carol Stream, DeMotte, Gilman, Coal City, Oswego, Chesterton, Manhattan, Elgin, Lombard, Evanston, La Grange, Naperville, Bolingbrook, Plano, Fairbury, Merrillville, Kankakee, Chicago, Yorkville, Oak Park, Roselawn, Des Plaines, Paxton, Gibson City, Wheaton, Oxford, Valparaiso, Watseka, Schaumburg, Palatine, Park Forest, Bourbonnais, Minooka, Cicero, Channahon, Aurora, and Orland Park 203 AM CST Tue Jan 21 2025 /303 AM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST /3 PM EST/ THIS AFTERNOON... * WHAT...Very cold wind chills as low as 28 below. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until 2 PM CST /3 PM EST/ this afternoon. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
150 WWUS73 KLOT 210859 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 259 AM CST Tue Jan 21 2025 ILZ012-211800- /O.UPG.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ /O.EXA.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ Kane- Including the cities of Elgin and Aurora 259 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Kane County. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills around 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ003>006-008-010-011-019-211800- /O.CON.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle- Including the cities of Crystal Lake, Byron, La Salle, Ottawa, Mendota, Waukegan, Marseilles, Belvidere, Dixon, Rockford, Gurnee, Streator, Sycamore, Mundelein, Rochelle, Oregon, McHenry, Woodstock, Buffalo Grove, DeKalb, and Algonquin 259 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL, and McHenry Counties. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills around 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019-211900- /O.CON.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Peotone, Portage, Hammond, Mokena, Pontiac, Northbrook, Downers Grove, Oak Forest, Fowler, Plainfield, Oak Lawn, Morris, Gary, Kentland, Dwight, Rensselaer, Calumet City, Beecher, Crete, Joliet, Bradley, Lemont, Wilmington, Carol Stream, DeMotte, Gilman, Coal City, Oswego, Chesterton, Manhattan, Lombard, Evanston, La Grange, Naperville, Bolingbrook, Plano, Fairbury, Merrillville, Kankakee, Chicago, Yorkville, Oak Park, Roselawn, Des Plaines, Paxton, Gibson City, Wheaton, Oxford, Valparaiso, Watseka, Schaumburg, Palatine, Park Forest, Bourbonnais, Minooka, Cicero, Channahon, Morocco, and Orland Park 259 AM CST Tue Jan 21 2025 /359 AM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST /3 PM EST/ THIS AFTERNOON... * WHAT...Dangerously cold wind chills as low as 28 below. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until 2 PM CST /3 PM EST/ this afternoon. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
506 WWUS73 KLOT 211757 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1157 AM CST Tue Jan 21 2025 ILZ003>006-008-010>012-019-220200- /O.EXP.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ /O.EXB.KLOT.CW.Y.0003.250121T1800Z-250122T0600Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-La Salle- Including the cities of Oregon, Streator, Mendota, Rockford, Crystal Lake, La Salle, Rochelle, Elgin, Buffalo Grove, Mundelein, DeKalb, Gurnee, Waukegan, Algonquin, Byron, Sycamore, Dixon, Ottawa, McHenry, Aurora, Marseilles, Woodstock, and Belvidere 1157 AM CST Tue Jan 21 2025 ...COLD WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...EXTREME COLD WARNING WILL EXPIRE AT NOON CST TODAY... * WHAT...Very cold wind chills as low as 20 to 25 below zero expected. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Kane, Lake IL, and McHenry Counties. * WHEN...Until midnight CST tonight. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ ILZ013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019-220200- /O.EXT.KLOT.CW.Y.0003.000000T0000Z-250122T0600Z/ DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Coal City, Park Forest, La Grange, Orland Park, Mokena, Cicero, Oak Lawn, Chicago, Oxford, Peotone, Hammond, Plano, Morris, Carol Stream, Northbrook, Oak Park, Bolingbrook, Gilman, Valparaiso, Roselawn, Schaumburg, Oak Forest, Palatine, Naperville, Yorkville, Evanston, Kankakee, Lombard, Paxton, Joliet, Manhattan, Beecher, Portage, Chesterton, Bradley, Wilmington, Downers Grove, Gary, Pontiac, Des Plaines, Crete, Fairbury, Kentland, Fowler, Lemont, Plainfield, Channahon, Oswego, Dwight, Merrillville, Bourbonnais, Rensselaer, Morocco, DeMotte, Minooka, Watseka, Wheaton, Gibson City, and Calumet City 1157 AM CST Tue Jan 21 2025 /1257 PM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * WHAT...Very cold wind chills as low as 20 below zero expected. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until midnight CST /1 AM EST/ tonight. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ Yack
Permalink to 202501210803-KLOT-WWUS73-NPWLOT
739 WWUS73 KLOT 210803 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 203 AM CST Tue Jan 21 2025 ILZ003>006-008-010-011-019-211800- /O.UPG.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ /O.NEW.KLOT.EC.W.0001.250121T0803Z-250121T1800Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle- Including the cities of Crystal Lake, Byron, La Salle, Ottawa, Mendota, Waukegan, Marseilles, Belvidere, Dixon, Rockford, Gurnee, Streator, Sycamore, Mundelein, Rochelle, Oregon, McHenry, Woodstock, Buffalo Grove, DeKalb, and Algonquin 203 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL, and McHenry Counties. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ012-013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019- 211815- /O.CON.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ Kane-DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford- Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Peotone, Portage, Hammond, Mokena, Pontiac, Northbrook, Downers Grove, Oak Forest, Fowler, Plainfield, Oak Lawn, Morris, Gary, Kentland, Dwight, Rensselaer, Calumet City, Beecher, Crete, Morocco, Joliet, Bradley, Lemont, Wilmington, Carol Stream, DeMotte, Gilman, Coal City, Oswego, Chesterton, Manhattan, Elgin, Lombard, Evanston, La Grange, Naperville, Bolingbrook, Plano, Fairbury, Merrillville, Kankakee, Chicago, Yorkville, Oak Park, Roselawn, Des Plaines, Paxton, Gibson City, Wheaton, Oxford, Valparaiso, Watseka, Schaumburg, Palatine, Park Forest, Bourbonnais, Minooka, Cicero, Channahon, Aurora, and Orland Park 203 AM CST Tue Jan 21 2025 /303 AM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST /3 PM EST/ THIS AFTERNOON... * WHAT...Very cold wind chills as low as 28 below. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until 2 PM CST /3 PM EST/ this afternoon. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
Permalink to 202501210859-KLOT-WWUS73-NPWLOT
150 WWUS73 KLOT 210859 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 259 AM CST Tue Jan 21 2025 ILZ012-211800- /O.UPG.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ /O.EXA.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ Kane- Including the cities of Elgin and Aurora 259 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Kane County. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills around 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ003>006-008-010-011-019-211800- /O.CON.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-La Salle- Including the cities of Crystal Lake, Byron, La Salle, Ottawa, Mendota, Waukegan, Marseilles, Belvidere, Dixon, Rockford, Gurnee, Streator, Sycamore, Mundelein, Rochelle, Oregon, McHenry, Woodstock, Buffalo Grove, DeKalb, and Algonquin 259 AM CST Tue Jan 21 2025 ...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY... * WHAT...Dangerously cold wind chills as low as 32 below. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Lake IL, and McHenry Counties. * WHEN...Until noon CST today. * IMPACTS...The dangerously cold wind chills around 30 below zero could cause frostbite on exposed skin in as little as 10 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures. * ADDITIONAL DETAILS...Wind chills will rise above 30 below by 11 AM to noon, but likely will not rise above 20 below until 2 to 3 PM. PRECAUTIONARY/PREPAREDNESS ACTIONS... Dress in layers including a hat, face mask, and gloves if you must go outside. && $$ ILZ013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019-211900- /O.CON.KLOT.CW.Y.0003.000000T0000Z-250121T2000Z/ DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Peotone, Portage, Hammond, Mokena, Pontiac, Northbrook, Downers Grove, Oak Forest, Fowler, Plainfield, Oak Lawn, Morris, Gary, Kentland, Dwight, Rensselaer, Calumet City, Beecher, Crete, Joliet, Bradley, Lemont, Wilmington, Carol Stream, DeMotte, Gilman, Coal City, Oswego, Chesterton, Manhattan, Lombard, Evanston, La Grange, Naperville, Bolingbrook, Plano, Fairbury, Merrillville, Kankakee, Chicago, Yorkville, Oak Park, Roselawn, Des Plaines, Paxton, Gibson City, Wheaton, Oxford, Valparaiso, Watseka, Schaumburg, Palatine, Park Forest, Bourbonnais, Minooka, Cicero, Channahon, Morocco, and Orland Park 259 AM CST Tue Jan 21 2025 /359 AM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST /3 PM EST/ THIS AFTERNOON... * WHAT...Dangerously cold wind chills as low as 28 below. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until 2 PM CST /3 PM EST/ this afternoon. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
Permalink to 202501211757-KLOT-WWUS73-NPWLOT
506 WWUS73 KLOT 211757 NPWLOT URGENT - WEATHER MESSAGE National Weather Service Chicago IL 1157 AM CST Tue Jan 21 2025 ILZ003>006-008-010>012-019-220200- /O.EXP.KLOT.EC.W.0001.000000T0000Z-250121T1800Z/ /O.EXB.KLOT.CW.Y.0003.250121T1800Z-250122T0600Z/ Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-La Salle- Including the cities of Oregon, Streator, Mendota, Rockford, Crystal Lake, La Salle, Rochelle, Elgin, Buffalo Grove, Mundelein, DeKalb, Gurnee, Waukegan, Algonquin, Byron, Sycamore, Dixon, Ottawa, McHenry, Aurora, Marseilles, Woodstock, and Belvidere 1157 AM CST Tue Jan 21 2025 ...COLD WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT... ...EXTREME COLD WARNING WILL EXPIRE AT NOON CST TODAY... * WHAT...Very cold wind chills as low as 20 to 25 below zero expected. * WHERE...Boone, De Kalb, La Salle, Lee, Ogle, Winnebago, Kane, Lake IL, and McHenry Counties. * WHEN...Until midnight CST tonight. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ ILZ013-020-021-023-032-033-039-103>108-INZ001-002-010-011-019-220200- /O.EXT.KLOT.CW.Y.0003.000000T0000Z-250122T0600Z/ DuPage-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Porter-Newton-Jasper-Benton- Including the cities of Coal City, Park Forest, La Grange, Orland Park, Mokena, Cicero, Oak Lawn, Chicago, Oxford, Peotone, Hammond, Plano, Morris, Carol Stream, Northbrook, Oak Park, Bolingbrook, Gilman, Valparaiso, Roselawn, Schaumburg, Oak Forest, Palatine, Naperville, Yorkville, Evanston, Kankakee, Lombard, Paxton, Joliet, Manhattan, Beecher, Portage, Chesterton, Bradley, Wilmington, Downers Grove, Gary, Pontiac, Des Plaines, Crete, Fairbury, Kentland, Fowler, Lemont, Plainfield, Channahon, Oswego, Dwight, Merrillville, Bourbonnais, Rensselaer, Morocco, DeMotte, Minooka, Watseka, Wheaton, Gibson City, and Calumet City 1157 AM CST Tue Jan 21 2025 /1257 PM EST Tue Jan 21 2025/ ...COLD WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST /1 AM EST/ TONIGHT... * WHAT...Very cold wind chills as low as 20 below zero expected. * WHERE...Portions of central, east central, and northeast Illinois and northwest Indiana. * WHEN...Until midnight CST /1 AM EST/ tonight. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$ Yack
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