Last week’s polar vortex and resulting sub-freezing temperatures forced many Virginia businesses and schools to close, and many events to be cancelled or rescheduled… including a number of all-important blood drives. Now a blood shortage is a big concern.
Approximately 280 blood drives across 25 states were cancelled last week due to the extreme cold weather conditions… and THAT has the American Red Cross scrambling for blood donors and donations. Kristen Hatfiled is with the Red Cross Mid-Atlantic Region.
It is most common at this time of year for scientific weather instruments to be found in the woods and forests.
Phil Hysell of the National Weather Service says what goes up-in this case miniature weather stations known as radiosondes-does come down.
Radiosondes are launched into the atmosphere twice a day across the country and can reach heights of over 100,000 feet. During their ascent, these devices send back valuable measurements of temperature, humidity, pressure and wind direction and speed that go into weather forecast models.