While details are limited just now, Verizon Wireless confirmed the outage on twitter Tuesday morning.
@verizon So....anyone else having problems with text messages this morning?
We have confirmed there is a texting outage on the east coast. Our technicians a fully aware we have a ton of customers that are being effected, and we're working non-stop to get this matter resolved as soon as possible. *IXR 1/3
As of 8:15 a.m., the company says it is working diligently to resolve the issue but says "the estimated resolution time is unknown at this time."