...EXTREME HEAT WATCH NOW IN EFFECT FROM FRIDAY MORNING THROUGH SUNDAY EVENING... * WHAT...Dangerously hot conditions with heat index values up to 107 possible. * WHERE...Portions of northwest and west central Iowa, southwest Minnesota, northeast Nebraska, and east central and southeast South Dakota. * WHEN...From Friday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and warnings for updates. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. &&