SPECIAL EPISODE: An earthquake has hit New York City and the surrounding region this morning about 10:20. The U.S. Geological Survey has measured the earthquake's intensity at 4-point-8 with the epicenter in northwestern New Jersey. That number could fluctuate. For more context, WNYC's Brian Lehrer speaks with Rutgers University geological professor Alexander Gates who calls it a "big" earthquake" in New Jersey. For the very latest updates, tune into WNYC.