...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING... ...Dangerously hot conditions with heat index values up to 114 expected. ...Portions of north central and northwest Louisiana and south central and southwest Arkansas. ...From 10 AM this morning to 7 PM CDT this evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. ...An upper-level ridge will maintain mostly dry conditions with temperatures forecast to climb into the mid to upper 90s this afternoon. Dewpoint temperatures will remain in the upper 70s in areas east of a line from Magnolia, Arkansas south to Natchitoches, Louisiana. This will result in Heat Index values above 110 degrees for several hours this afternoon.
