Severe thunderstorms in the central Plains Saturday evening resulted in more than two dozen tornado reports across northwestern Iowa. Survey teams from NWS Weather Forecast Offices in Omaha, Neb., Sioux Falls, S.D., and Des Moines, Iowa, completed damage assessments of tornadoes that moved through the state.

Today is the beginning of National Tsunami Awareness Week. Throughout the week, states and localities will be conducting tsunami preparedness activities to help residents and coastal visitors learn about the risks of tsunamis, what to do, and how to stay safe in the event of a tsunami

All Tsunami Warnings and Advisories have been canceled for the U.S. Damaging tsunamis are no longer expected to impact the U.S

A powerful 8.9 earthquake near Japan triggered tsunami that is now heading toward the American West Coast, Alaska and Hawaii. For West Coast and Alaska alerts visit http://wcatwc.arh.noaa.gov/.

NOAA hurricane forecasters and U.S.

Over the past two days, the NWS Storm Prediction Center has logged more than 350 reports of severe weather across the nation, including 10 reports of tornadoes. Some of the worst reports are from Franklin County, Tennessee, were preliminary reports indicated substantial structural damage to residences early Monday afternoon, as well as one fatality

The National Weather Service Storm Prediction Center is forecasting the development of a few strong tornadoes and potentially widespread damaging winds over parts of the Ozark plateau into Mid-South and lower Ohio Valley Sunday afternoon into Sunday night, where a Moderate Risk area has been identified.

The storm system that moved from the southern Plains through the Mid-Mississippi Valley on Thursday and into the Ohio Valley overnight produced severe thunderstorms across the South Central U.S. At least 10 tornado reports and more than 200 damaging wind reports were received Thursday and Thursday night from Arkansas and northern Louisiana east across northern portions of Mississippi, Alabama, and Georgia, and north across Tennessee and Kentucky

The NWS Storm Prediction Center has issued a moderate risk for severe thunderstorms for today over parts of the lower Mississippi and lower Tennessee Valleys. The areas most likely to experience this activity include much of Arkansas, western Kentucky, northern Mississippi, and western and middle Tennessee. The storms will have the potential to grow into one or more long-lived bands that could produce a few strong tornadoes in addition to swaths of damaging wind and hail.

The National Weather Service has announced an experimental, non-operational test of a Web map that provides users with access to NWS hazardous weather information, along with routine forecasts and products via an interactive Web-based map. The draft map displays NWS watches, warnings, and advisories as three colors: orange, red, and yellow, respectively