Severe Thunderstorm Warning 5:09 PM EDT on July 19, 2013 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... eastern Montgomery County in central Maryland... * until 600 PM EDT * at 508 PM EDT... a severe thunderstorm was detected near North Potomac... or near Gaithersburg... and was moving east at 5 mph. This storm is capable of producing hail up to the size of quarters and damaging winds in excess of 60 mph. * Locations impacted include... Gaithersburg... Rockville... Montgomery Village... Olney... Aspen Hill... Precautionary/preparedness actions... This is a dangerous storm. If you are in its path... move indoors to a sturdy building and stay away from windows. When it is safe to do so... report severe weather to local law enforcement or to the National Weather Service. Lat... Lon 3926 7713 3921 7703 3912 7697 3903 7723 3910 7731 time... Mot... loc 2109z 249deg 6kt 3911 7722 Gms Heat Advisory 12:06 PM EDT on July 19, 2013 ... Heat advisory remains in effect until 8 PM EDT this evening... * heat index values... between 105 and 109 degrees due to the combination of temperatures in the mid to upper 90s and dewpoints in the low to mid 70s. * Impacts... risk of heat-related illness for those without air- conditioning or those outdoors for an extended period. Precautionary/preparedness actions... A heat advisory means that a period of high temperatures is expected. The combination of high temperatures and high humidity will create a situation in which heat illnesses are possible. Take extra precautions if you work or spend time outside. When possible... reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work... the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency - call 9 1 1.
Posted on: Fri, 19 Jul 2013 21:13:02 +0000