Moderate

* WHAT...Heat index values in the low to mid 90s expected. * WHERE...Eastern Windsor County. * WHEN...From noon to 8 PM EDT Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...This will be the third of a series of increasingly warm and humid days, resulting in accumulated heat stress. Impacts may be greater early in the season when we are less acclimated to the heat. Drink plenty of fluids, stay in an air-conditioned room, stay out of

At 136 PM EDT, Doppler radar was tracking a strong thunderstorm capable of producing a landspout over Picolata, or near Green Cove Springs, moving northwest at 10 mph. HAZARD...Landspouts and wind gusts around 40 mph. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Green Cove Springs, Fruit Cove, Picolata, and Bakersville. If outdoors, consider seeking shelter inside a building.

* WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph expected. * WHERE...Eastern Fall River, Southern Foothills, and Western Fall River. * WHEN...From 3 AM to 5 PM MDT Thursday. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

* WHAT...Northwest winds 30 to 40 mph with gusts up to 50 mph expected. * WHERE...Portions of northwestern and southwestern South Dakota. * WHEN...From 3 AM to 5 PM MDT Thursday. * IMPACTS...Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

At 1243 PM CDT, strong winds were being reported with decaying thunderstorms along a line extending from near Spring Valley to near Volga. Movement was northeast at 60 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Trained weather spotters. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... La Crosse, Winona, Decorah, Charles City, Oelwein, Prairie Du Chien, La Crescent, Waukon, Cresco, Osage, New Hampton, Caledonia, West

At 1230 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near Shipman to near Naola to near Chamblissburg. Movement was east at 30 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Lynchburg... Buckingham... Bedford... Altavista... Amherst... Appomattox... and Dillwyn.

At 1140 AM CDT, Doppler radar was tracking a strong thunderstorm over Goodhue, or 10 miles south of Red Wing, moving northeast at 25 mph. HAZARD...Wind gusts up to 40 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Goodhue, Bellechester, Red Wing, Wacouta, Frontenac State Park, Frontenac and Central Point.

* WHAT...Heat index values around 105 expected. * WHERE...Along the Mississippi River, lower Pearl, Southwest, Southeast, Central Mississippi, Mississippi Delta, Portions of Southeast Arkansas, Portions of Northeast Louisiana. * WHEN...From 11 AM Friday to 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

At 1249 PM EDT, Doppler radar was tracking a strong thunderstorm 9 miles northwest of Frankfort, moving east at 30 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Frankfort, Thompsonville, Empire, Beulah, Sleeping Bear Point, Arcadia, Glen Arbor, Benzonia, Elberta, Honor, Lake Ann, Copemish,

The combination of temperatures in the upper 80s and low 90s combined with high humidity will result in peak afternoon heat index values in the 100 to 105 degree range each afternoon Today and Thursday. Early season stretches of heat and humidity can catch folks off guard if they are unprepared. If planning to be outdoors for extended periods drink plenty of water, where light and loose clothing, and take frequent breaks.