Severe Weather Forecast: Threat Continues in the Northeast

Published: July 2,2014, 7:19AM,EDT weather.com

Dangerous Winds Down Trees

After a derecho and other powerful severe storms swept the Midwest Monday, a cold front continued to advance through the Ozarks and Ohio River Valley on Tuesday.
(MORE: What is a Derecho?)
At least two people died and several were injured as two powerful lines of storms, at least one of which qualified as a derecho, swept the Midwest Monday and Monday night with winds clocked as high as 86 mph.
Flash flooding has been a major problem across the eastern half of Iowa, with numerous reports of flooding.
(VIDEO: Serious Flooding in Eastern Iowa)
For Wednesday, the severe weather threat will spread into parts of the Northeast. Damaging winds and hail are the main threats, along with the potential for a few brief tornadoes.
(MORE: Latest Damage Reports and Storm Aftermath)
Breaking severe weather information and storm reports are available in the live blog below. Scroll down to view forecast information regarding upcoming severe weather.

Severe Weather Live Ticker: Latest Updates

All tornado warnings, along with other relevant tweets from The Weather Channel and local National Weather Service offices in current threat areas, will appear here.
Information updates automatically; no need to reload or refresh your browser. Time stamps on the left are in Eastern time; subtract one hour for Central time and two hours for Mountain time. For complete warning information and radar links, scroll above to see the radar imagery and clickable severe weather alerts links.

Radar with Watches and Warnings

Shaded areas underneath any radar returns are watches, and small hollow outlines are warnings. Red shades (outlines) are tornado watches (warnings). Yellow shades (outlines) are severe thunderstorm watches (warnings). Flash flood warnings are shown as green outlines. The links below have radar and watch/warning information for the entire contiguous U.S.
(MORE: View National Interactive Radar Map | Clickable Severe Alerts | Watch vs. Warning?)

Radar with Watches and Warnings

Shaded areas underneath any radar returns are watches, and small hollow outlines are warnings. Red shades (outlines) are tornado watches (warnings). Yellow shades (outlines) are severe thunderstorm watches (warnings). Flash flood warnings are shown as green outlines. The links below have radar and watch/warning information for the entire contiguous U.S.
(MORE: View National Interactive Radar Map | Clickable Severe Alerts | Watch vs. Warning?)
 

Next 12 Hours

Thunderstorm Forecast: Next 12 Hours

Red shading in the map above indicates areas with the best chance of severe thunderstorms; orange shades can expect thunderstorms, but have little or no threat of severe weather. By definition, severe thunderstorms have one of the following: wind gusts of at least 58 mph, hail at least one inch in diameter, or a tornado.
Wednesday's threat will mainly be for damaging winds and some hail. The threat of tornadoes is relatively low, but a few brief tornadoes can't be ruled out.
(FORECAST:  Philadelphia | New York | Burlington)See Dr. Greg Forbes's TOR:CON tornado forecast for a state-by-state breakdown of areas at risk of tornadoes over the next several days.

Thursday's Thunderstorm Outlook

Thunderstorm Outlook Thursday

Strong to severe thunderstorms will push farther east to the Northeast coast on Thursday. The greatest risk with these storms will be damaging winds, hail and locally heavy rain. The tornado threat appears to be relatively low.
(FORECAST: Baltimore | New York | Boston)
Lightning is of course always dangerous. Keep that in mind if you have outdoor plans in the orange areas on our thunderstorm maps.

Flash Flooding/River Flooding

Flood Alerts

• READ NWS ALERTS

River flooding continues in parts of the Upper Mississippi, Missouri, and Red River Valleys in response to torrential rainfall last month. Major flooding is either ongoing or forecast at several locations along the Mississippi River, including St. Paul, Minnesota, and Burlington, Iowa.
Thankfully, very little to no additional rainfall is expected for this region on Wednesday. Nevertheless, any pop up showers that develop will produce run off rains that will exacerbate flash flooding concerns.
Green outlines above indicate flash flood warnings, typically issued for a few hours at a time, while narrow strips of dark green denote river flood warnings.
Elsewhere, local flash flooding is possible in parts of the South and East over the next couple of days with slow-moving thunderstorms or thunderstorm clusters.

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If you crave pictures of severe weather, you've found your home here. Upload your photos or video (taking care to only take photos and videos from a safe location) to us and share your experience!
(PHOTO/VIDEO GALLERIES: Severe | Storms)

PHOTOS: Mid-June 2014 Plains Severe Weather

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South Dakota Tornadoes

Storm chaser Roger Hill and his tour group, Silver Lining Tours, saw a total of eight tornadoes during their chase Wednesday, June 18, 2014, in South Dakota. (Roger Hill/Silver Lining Tours)