Monday, September 17, 2012

Dangerous Wind Event 
Moving Toward The Coast 


5:50 PM EDT 9/18 | Numerous Tornado Watches remain in effect across a large portions of the Mid-Atlantic and Northeast, and at least 46 wind reports have been received by the Storm Prediction Center. View today's latest Storm Reports at this SPC link.

Our team is continuing with local updates from metro-focused Facebook zones in the affected zones areas, including these states: 

Our Severe Weather Team on Facebook

TIMING: The periods and locations of highest impact include
  • After 5:00 PM into overnight hours for PA to NJ and NY
  • After 9 PM, areas, west of I-95 should be in the clear
  • Areas right along the immediate coast in New Jersey, Maryland, Virginia may  remain at risk for wind impacts until the front passes late tonight. 
HAZARDS: Damaging winds in the area denoted by the Tornado Watch are expected, along with several tornadoes will be possible in the more robust storms. Although this setup does not necessarily favor intense tornadoes, any that form will likely be moving at over 50 mph. (Forecasters Jason M., Josh O., Greg J., Connor M., and Rich F.)

11:35 AM EDT 9/18 A TORNADO WATCH is also in effect for Washington, D.C., most of Maryland, much of Virginia, and northern portions of North Carolina until 7 PM. Widespread showers and thunderstorms will impact the region over the next several hours, and some of these may produce high winds and isolated tornadoes. 

RISKS: The entire Mid Atlantic still remains at risk for severe thunderstorm development today, and the threat may begin earlier than we initially anticipated. Widespread light to moderate rain over areas west of I-95 should gradually give way to some clearing over the next 2-3 hours. (Forecaster Jason)

The Sunny Run Has Ended, For Now.

7:30 AM EDT 9/18  (Severe Weather Team) The potential exists for severe thunderstorms, now affecting the Southeast, to begin impact the Mid-Atlantic region during the afternoon and evening hours on Tuesday. Forecaster Josh O. of the Maryland Weather Center has prepared this video on the threat for the Mid-Atlantic on Tuesday. 

Today In The Mid-Atlantic

HAZARDS: According to the Storm Prediction Center, destructive winds will be the primary hazard on Tuesday, although a couple tornadoes and small hail are possible will be possible within the red hatched area of the enclosed graphic. 

IMPACTS: This situation may be similar to the Saturday, September 8 cold front which strongly affected some parts of Maryland and left other areas relatively untouched. We underline that while the risk is present for the entire region, it is also likely not every location in the area denoted in the map will experience actual damaging impacts from wind or thunderstorms.

UPDATES: Our Severe Weather Team will be posting regular updates th roughout the day in the affected zones around the Mid-Atlantic, including Central Maryland, the Capital Region and the Bayshore of Eastern MD.  Please monitor local statements from your NWS office or text alert system on any official watches or warnings. 

(Forecasters Jason M., Josh O., Jason I., Rich F. Graphic and Video by Josh O.)

For the Southeast

10:45 PM EDT 9/17 (Forecaster Jason Isaacs) Tornado Watch # 640 continues until 3 AM EDT

  • A TORNADO WATCH has been issued for Northern and Central Georgia, Western North Carolina, Upstate South Carolina and Eastern Tennessee until 3 AM EDT.
  • Several areas of thunderstorms are expected to persist and possibly increase in coverage through late tonight. While the threat of tornadoes will be limited, the potential will still exists for some short lived tornadoes throughout the watch area. Additional threats include Quarter-Sized Hail, Wind Gusts to 70 MPH and dangerous lightning.
  • All residents in the effected areas should be on the lookout for threatening weather conditions and listen for possible warnings. 

LOCAL UPDATES; Reports from Forecasters in the affected areas are available from our pages for Metro Atlanta & North Georgia and East Tennessee.

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