Technology-dependent companies in Houston such as Internet service providers, telephone switch operations, and data and call centers suffered in early June’s disastrous flood caused by Tropical Storm Allison. However, tenants at WiredZone’s facility in Westchase, which caters to the needs of bandwidth-intensive companies, remained dry. The National Oceanic and Atmospheric Administration reported that Allison dumped nearly 37 inches of rain in Houston, with one area receiving 19.58 inches in a 24-hour period. Federal estimates of the damage caused by the storm have reached nearly $5 billion, making it the most expensive tropical storm in U.S. history. Damages in the Houston area include: $2.04 billion to public facilities, especially to the Texas Medical Center; $1.76 billion to residential properties and; $1.08 billion to businesses.