Severe

* WHAT...For the Coastal Flood Warning, significant coastal flooding. For the Coastal Flood Advisory, minor coastal flooding expected. * WHERE...St Johns River Basin. * WHEN...For the Coastal Flood Warning, until 5 PM EDT this afternoon. For the Coastal Flood Advisory, from 5 PM this afternoon to 2 PM EDT Saturday. * IMPACTS...Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure will be inundated. Some shoreline erosion will occur.

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR CENTRAL BLACK HILLS, SOUTHERN BLACK HILLS, FALL RIVER COUNTY AREA, NORTHERN FOOT HILLS, EASTERN FOOT HILLS, CUSTER COUNTY PLAINS, PINE RIDGE AREA, BUTTE COUNTY AREA, WEST CENTRAL PLAINS, BADLANDS AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY PLAINS, WESTON COUNTY PLAINS, AND WYOMING BLACK HILLS... * AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 318, 320,

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH FRIDAY EVENING DUE TO GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NEBRASKA AND WYOMING... * AFFECTED AREA...Fire Weather Zones 417 through 422, 425, 427, 432, and 434. * TIMING...From Friday afternoon through Friday evening. * WINDS...Southwest winds 15 to 25 mph with gusts around 35 mph. * RELATIVE HUMIDITY...Relative Humidity between 13 to 20 percent. * IMPACTS...Any fires that develop may spread rapidly. Outdoor burning is not recommended.

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of southeast Alabama, the Florida Panhandle and Big Bend, and southwest Georgia. * WHEN...From Friday afternoon through Saturday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Hurricane Isaias is expected to bring bands of heavy rainfall to

* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 111. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Imperial County West and Imperial Valley. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to

* WHAT...Dangerously hot conditions. Afternoon temperatures 103 to 106 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...In Arizona, Gila River Valley and Parker Valley. In California, Chuckwalla Valley and Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ to 8 PM MST /8 PM PDT/ Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

* WHAT...Dangerously hot conditions. Afternoon temperatures 103 to 107. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...Yuma. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat.

...FIRE WEATHER WATCH FOR HIGH WINDS AND ACTIVE WILDFIRES IN EFFECT FROM FRIDAY AFTERNOON THROUGH FRIDAY EVENING FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470... ...FIRE WEATHER WATCH FOR HIGH WINDS AND ACTIVE WILDFIRES IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470.... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR HIGH WINDS AND ACTIVE WILDFIRES FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470...

...FIRE WEATHER WATCH FOR HIGH WINDS AND ACTIVE WILDFIRES IN EFFECT FROM FRIDAY AFTERNOON THROUGH FRIDAY EVENING FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470... ...FIRE WEATHER WATCH FOR HIGH WINDS AND ACTIVE WILDFIRES IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470.... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR HIGH WINDS AND ACTIVE WILDFIRES FOR FIRE WEATHER ZONES 424, 437, 438, 469, AND 470...

* WHAT...Dangerously hot conditions with high temperatures 106 to 110. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose