FFWABQ The National Weather Service in Albuquerque has issued a * Flash Flood Warning for. Central Roosevelt County in east central New Mexico. * Until 100 PM MDT. * At 1005 AM MDT, trained weather spotters reported flash flooding in Portales. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 0.25 to 0.5 inches are possible in the warned area. Flash flooding is already occurring. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Trained spotters reported flash flooding on East 18th Street in Portales. IMPACT. Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include. Portales and Floyd.