Moderate

Severe thunderstorms capable of producing damaging winds and large hail are possible through this evening across portions of eastern West Virginia, northern and central Virginia, central and southern Maryland, and the District of Columbia. Residents in these areas should monitor this situation very closely and ensure your NOAA weather radios are set to alert mode. Severe weather warnings for imminent damaging storms may become necessary. Here are some safety rules to keep in mind when severe weather is

* WHAT...For the Coastal Flood Advisory, up to 2.0 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents expected. * WHERE...San Francisco County. * WHEN...For the Coastal Flood Advisory, until 3 AM PDT Wednesday. For the Beach Hazards Statement, from 3 AM PDT Sunday through 3 AM PDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only

* WHAT...For the Coastal Flood Advisory, up to 2.0 ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways. For the Beach Hazards Statement, increased risk of sneaker waves and strong rip currents expected. * WHERE...Pacific Coast Beaches. * WHEN...For the Coastal Flood Advisory, from 7 PM PDT Saturday to 3 AM PDT Tuesday. For the Beach Hazards Statement, from 3 AM PDT Sunday through 3 AM PDT Wednesday. * IMPACTS...High tide flooding of lots, parks, and roads with

* WHAT...Dangerous swimming conditions due to 3-5 ft waves and rip currents. * WHERE...Benzie, Manistee and Southeast Chippewa Counties. * WHEN...Through this evening. * IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers. Remain out of the water to avoid hazardous swimming conditions.

At 259 PM EDT, Doppler radar was tracking strong thunderstorms along a line extending from near Whitney Point to near Little Meadows to Herrick. 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. Minor hail damage to vegetation is possible. Locations impacted include... Binghamton, Vestal, Johnson City, Endicott, Kirkwood, Conklin, Maine, Rush, Towanda, and Wysox.

* WHAT...The warm temperatures in the middle to upper 70s to middle 80s may cause people to underestimate the dangers of the cold water temperatures which are currently in the upper 40s. * WHERE...Coastal Hancock and Coastal Washington Counties. * WHEN...From Saturday morning through Saturday evening. * IMPACTS...The cold water temperatures can quickly cause hypothermia to anyone immersed in the waters. Anyone on boats or paddlecraft should use extreme caution to avoid this threat.

* WHAT...Heat index values of 100 to 105 expected on Saturday. * WHERE...Tarrant, Dallas, Wise, Denton, Collin, Hunt, Parker, Hood, Somervell, Johnson, Ellis, Rockwall, Navarro, and Kaufman counties. * WHEN...From noon to 9 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat-related illnesses. * ADDITIONAL DETAILS...Those who will be participating in activities outside with large crowds should take extra precautions to protect themselves and others from heatstroke and heat exhaustion.

At 227 PM EDT, Doppler radar was tracking a strong thunderstorm 9 miles southwest of Palm Bay, moving south at 5 mph. HAZARD...Wind gusts up to 50 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... Palm Bay. If outdoors, consider seeking shelter inside a building.

At 228 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms 7 miles northwest of Cohutta, or 8 miles north of Ringgold, moving east at 20 mph. HAZARD...Wind gusts up to 40 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Wildwood Lake, South Cleveland, Collegedale, McDonald, Conasauga, Red Clay State Park, Flint Springs, Apison, Gap Springs, and Ooltewah. If outdoors, consider seeking shelter inside a building.

* WHAT...Heat index values up to 97. * WHERE...Portions of southwest and western Maine and central, northern, and southern New Hampshire. * WHEN...Until 8 PM EDT this evening. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning