Weather Alerts For Lamar, IN

# HEADLINE -------------------- EXTREME HEAT WARNING IN EFFECT FROM 11 AM CDT /NOON EDT/ THURSDAY TO 8 PM CDT /9 PM EDT/ SUNDAY HEAT ADVISORY NOW IN EFFECT UNTIL 11 AM CDT /NOON EDT/ THURSDAY # DETAILS -------------------- WHAT For the Heat Advisory, heat index values up to 107. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. WHERE Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. WHEN For the Heat Advisory, until 11 AM CDT /noon EDT/ Thursday. For the Extreme Heat Warning, from 11 AM CDT /noon EDT/ Thursday to 8 PM CDT /9 PM EDT/ Sunday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Wednesday, August 12, 2026 at 1:11 PM CDT ISSUED BY National Weather Service Paducah KY HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. # AREAS AFFECTED -------------------- Bollinger, Calloway, Christian, Hickman, Pulaski, Scott, Williamson, Alexander, Ballard, Butler, Caldwell, Cape Girardeau, Carlisle, Carter, Crittenden, Daviess, Edwards, Franklin, Fulton, Gallatin, Gibson, Graves, Hamilton, Hardin, Henderson, Hopkins, Jackson, Jefferson, Johnson, Livingston, Lyon, Marshall, Massac, McCracken, McLean, Mississippi, Muhlenberg, New Madrid, Perry MO, Pike, Pope, Posey, Ripley, Saline, Spencer, Stoddard, Todd, Trigg, Union, Union KY, Vanderburgh, Wabash, Warrick, Wayne IL, Wayne MO, Webster, White Including the cities of Murray, Mound City, Perryville, Petersburg, Greenville, Eddyville, Albion, Hickman, Paducah, Cape Girardeau, Smithland, Evansville, Harrisburg, Poseyville, Henderson, McLeansboro, Madisonville, Piedmont, Mount Vernon, Fairfield, Van Buren, Bardwell, West Frankfort, Calhoun, Jackson, Rockport, Cadiz, Metropolis, Benton, Dixon, Poplar Bluff, Elkton, Princeton, Carbondale, Jonesboro, Boonville, Fort Branch, Cairo, Golconda, Carmi, Wickliffe, Owensboro, Marble Hill, Murphysboro, Sikeston, Charleston, Mount Carmel, Herrin, Clinton, Mayfield, Bloomfield, Vienna, Shawneetown, Morganfield, Doniphan, Marion, Hopkinsville, New Madrid, and Elizabethtown

# SUMMARY -------------------- THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 577 IN EFFECT UNTIL 8 PM CDT /9 PM EDT/ THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN SOUTHEAST ILLINOIS EDWARDS IN SOUTHERN ILLINOIS WABASH IN INDIANA THIS WATCH INCLUDES 6 COUNTIES IN SOUTHWEST INDIANA POSEY IN SOUTHWEST INDIANA GIBSON PIKE SPENCER VANDERBURGH WARRICK IN KENTUCKY THIS WATCH INCLUDES 2 COUNTIES IN WESTERN KENTUCKY DAVIESS HENDERSON THIS INCLUDES THE CITIES OF ALBION, BOONVILLE, EVANSVILLE, FORT BRANCH, GRAYVILLE, HENDERSON, MOUNT CARMEL, OWENSBORO, PETERSBURG, POSEYVILLE, ROCKPORT, AND WEST SALEM. # DETAILS -------------------- ISSUED AT Wednesday, August 12, 2026 at 2:24 PM CDT ISSUED BY NATIONAL WEATHER SERVICE PADUCAH KY HEADER WATCH COUNTY NOTIFICATION FOR WATCH 577

# HEADLINE -------------------- EXTREME HEAT WARNING IN EFFECT FROM 11 AM CDT /NOON EDT/ THURSDAY TO 8 PM CDT /9 PM EDT/ SUNDAY HEAT ADVISORY NOW IN EFFECT UNTIL 11 AM CDT /NOON EDT/ THURSDAY # DETAILS -------------------- WHAT For the Heat Advisory, heat index values up to 107. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. WHERE Portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. WHEN For the Heat Advisory, until 11 AM CDT /noon EDT/ Thursday. For the Extreme Heat Warning, from 11 AM CDT /noon EDT/ Thursday to 8 PM CDT /9 PM EDT/ Sunday. IMPACTS Heat related illnesses increase significantly during extreme heat and high humidity events. ISSUED AT Wednesday, August 12, 2026 at 1:11 PM CDT ISSUED BY National Weather Service Paducah KY HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. # AREAS AFFECTED -------------------- Bollinger, Calloway, Christian, Hickman, Pulaski, Scott, Williamson, Alexander, Ballard, Butler, Caldwell, Cape Girardeau, Carlisle, Carter, Crittenden, Daviess, Edwards, Franklin, Fulton, Gallatin, Gibson, Graves, Hamilton, Hardin, Henderson, Hopkins, Jackson, Jefferson, Johnson, Livingston, Lyon, Marshall, Massac, McCracken, McLean, Mississippi, Muhlenberg, New Madrid, Perry MO, Pike, Pope, Posey, Ripley, Saline, Spencer, Stoddard, Todd, Trigg, Union, Union KY, Vanderburgh, Wabash, Warrick, Wayne IL, Wayne MO, Webster, White Including the cities of Murray, Mound City, Perryville, Petersburg, Greenville, Eddyville, Albion, Hickman, Paducah, Cape Girardeau, Smithland, Evansville, Harrisburg, Poseyville, Henderson, McLeansboro, Madisonville, Piedmont, Mount Vernon, Fairfield, Van Buren, Bardwell, West Frankfort, Calhoun, Jackson, Rockport, Cadiz, Metropolis, Benton, Dixon, Poplar Bluff, Elkton, Princeton, Carbondale, Jonesboro, Boonville, Fort Branch, Cairo, Golconda, Carmi, Wickliffe, Owensboro, Marble Hill, Murphysboro, Sikeston, Charleston, Mount Carmel, Herrin, Clinton, Mayfield, Bloomfield, Vienna, Shawneetown, Morganfield, Doniphan, Marion, Hopkinsville, New Madrid, and Elizabethtown

Closest strike: 2.52 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

There is a Slight Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE NORTHERN AND CENTRAL PLAINS AND LOWER OHIO VALLEY SUMMARY Scattered severe thunderstorms with occasional wind damage remain likely this afternoon/evening from Illinois/Indiana into Kentucky. Initial supercells with very large hail across the central/northern High Plains are expected to evolve into a cluster or two overnight while spreading eastward across Nebraska/South Dakota with the potential for severe gusts. 20z Update OH Valley Several clusters of strong to severe storms remain ongoing in proximity to the outflow from the prior complex this morning. Expectations are for additional storm development to occur along the southern portions of the outflow across southern IN/IL and western/northern KY where the air mass remains quite warm and unstable (MLCAPE 300-4000 J/kg). Deep-layer shear of 25-35 kt would support a mixed mode of clusters and short line segments, with severe gusts (some 70-75 mph), isolated hail and a tornado or two possible into this evening. Have trimmed probabilities behind the current storms/outflow and adjusted CIG1 wind probabilities farther southwest. WY/SD/NE Initial supercells have developed and are maturing within a broad post-frontal upslope flow regime across eastern WY/MT, western SD and northwest NE. These storms are expected to remain mostly supercellular and should continue to pose a threat for large to very large hail (2-3 inch), severe wind gusts and potentially a tornado or two into this evening as they track eastward along a diffuse frontal boundary. Additional, likely higher-based storms should develop across northeast CO and western NE before spreading northeastward with a risk for severe gusts and some hail. Eventually, upscale growth into one or more clusters/bowing segments appears likely as a 40-50 kt low-level jet and strong low-level warm advection is forecast to develop across the central/northern Plains. This would support a risk for severe gusts of 65-80 mph across parts of central and eastern NE/SD, likely reaching western IA by early Thursday morning. 2% tornado probabilities have been added to western SD and eastern WY where the supercellular mode could support some tornado risk.

Pollen Index: 8.2 Pollen Level: medium-high Predominant Pollen: Grass and Nettle. Concentration of pollen grains in the air for Thursday will be falling in the moderate range. This decrease is due to falling temperatures, rising humidity, and heavy rains in the morning which tend to wash pollen out of the air. That's good news for allergy sufferers.