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Yahoo
13-05-2025
- Climate
- Yahoo
Rain to drench mid-Atlantic, central Appalachians, but struggle to reach all of New England
A storm that brought days of downpours and rounds of thunderstorms to the Southeast is heading northward, but not all areas of the Northeast will get soaked, AccuWeather meteorologists say. The southeastern United States storm produced rainfall ranging from 6 to 10 inches through Monday night, with some locations picking up between 10 and 14 inches of rain. While that magnitude of rain is not heading to the Northeast, a thorough soaking is coming to many areas, and some locations may experience heavy enough downpours to trigger flooding. Some heavy to locally severe thunderstorms can form over the lower part of the mid-Atlantic as well. The slow-moving storm will weaken as it lifts northward, but it will tap into some Atlantic moisture for the balance of the week. "In the Northeast states, the bulk of the rain is likely to fall on the mid-Atlantic region to parts of the central Appalachians into midweek," AccuWeather Chief On-Air Meteorologist Bernie Rayno said. A general 1-2 inches of rain is forecast to fall from the coastal areas of Virginia, Maryland and Delaware, westward to the Allegheny Mountains in West Virginia and central Pennsylvania. A swath of 2-4 inches of rain, with an AccuWeather Local StormMax™ rainfall of 6 inches, is anticipated from eastern North Carolina to parts of West Virginia's Eastern Panhandle. While the rain will be gentle and soaking in many cases and ideal for drought relief, an inch per hour rain can fall in some locations, which can overwhelm storm drains and lead to urban-style flooding. Where that rain falls on a more moist landscape, quick rises can occur on some small streams. However, aside from the isolated flash flood risk and the inconvenience the rain will cause for travel and outdoor plans, the rain is generally needed due to months of rainfall deficit. The rain will break up into more of a showery regime with embedded thunderstorms at midweek. As the steady rain winds down in the mid-Atlantic, showers and spotty thunderstorms will ramp up over the Midwest and New England Wednesday and Thursday. "Since humidity levels will be climbing as the storm progresses, it will not feel cool for too long, which is a bit different from most rainstorms thus far this spring," Rayno said. As the storm slowly breaks up in place over the Northeast from Wednesday to Thursday, the sun can break through here and there. Where the sun is out for a time, it may feel rather warm and humid, compared to most days this spring. Temperatures will trend upward for the remainder of the week from widespread highs in the 60s and mid-70s Tuesday to widespread 70s and 80s. The exception will be in eastern New England, where winds from the Atlantic and the chilly Labrador Current will cap highs in the the app? Unlock AccuWeather Alerts™ with Premium+ Very little rain is likely to reach northern New England from the storm, due to lingering dry air and the breakup of moisture over time. It is conceivable that parts of Vermont, New Hampshire and Maine may stay completely free of rain through at least Thursday. By Friday, there may be little evidence of the old Southern storm remaining. However, a storm that will snap a blistering northern Plains heat wave will advance from the Great Lakes to the Northeast from Friday to the weekend. That advancing storm will bring a renewed uptick in showers and thunderstorms. There may even be pockets of severe weather. The best chance for widespread rainfall in New England will come from that late-week and weekend storm. Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
Yahoo
08-05-2025
- Climate
- Yahoo
Needed southeast US rain could become too much, trigger flooding
A massive stalled storm will bring day after day of showers and thunderstorms to parts of the southeastern United States through the Mother's Day weekend. AccuWeather meteorologists say that while rain is needed in some areas, too much may fall and lead to flooding problems. Rainfall from the winter to the first part of the spring has been lean in parts of the region, to say the least. In some locations, drought conditions have escalated to severe or worse. The dry conditions have resulted in much more than brown lawns and is on the verge of impacting crops in the region by adding stress and stunting growth. While the southeastern U.S. is well known for crops such as peanuts, tobacco and cotton, it is also a source for summer vegetables, grains and tree and bush fruits. Rainfall at a critical time in the spring and early summer is essential for the plants to grow, fill out and produce a significant amount of produce. Rainfall from the long-lasting storm will have vast positive impacts on soil moisture and filling some streams, ponds and reservoirs in the region, especially from northern Florida to the Carolinas. Some of the negatives from the slow-moving, drenching storm system are fairly obvious and may lead to alterations to outdoor plans and slow travel heading into and throughout the Mother's Day weekend. A much more significant negative impact may unfold and this can occur anytime there are days of the app? Unlock AccuWeather Alerts™ with Premium+ AccuWeather meteorologists expect a broad zone where 1-4 inches of rain will fall. While that amount spread over multiple days is not extreme, rainfall in some locations can be double and nearly triple that amount. The AccuWeather Local StormMax™ rainfall for the storm through Tuesday is 10 inches. Streams and rivers in the region that may have been running low will fill with water. Low-lying unprotected flatlands along some of the rivers may flood. Meanwhile, the same storm system will create an onshore wind from the Atlantic that will push water toward the coast and result in levels above the astronomical tide. The combination of the onshore winds and proximity to the astronomical effects of the full moon early next week can lead to coastal flooding. The flooding will be the most significant at times of high tide. Any surge of water coming in to meet the tidal surge can also add to the flooding. This potentially may include cities such as Charleston, South Carolina, and Savannah, Georgia. Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
Yahoo
04-04-2025
- Climate
- Yahoo
Central US: Catastrophic, life-threatening flash flooding to be followed by major river flooding
Additional rounds of torrential rain will continue to trigger widespread, life-threatening and catastrophic flash flooding centered on the mid-Mississippi and Ohio valleys into Saturday night, AccuWeather meteorologists warn. In the next few weeks, runoff from the extreme rainfall will result in moderate to major flooding on the secondary and largest rivers in the region. As of Friday, some locations in Tennessee and Kentucky were approaching double-digit rainfall from an event that was only about halfway complete. Some locations in the mid-Mississippi and Ohio valleys will be on the receiving end of two more rounds of heavy rain with perhaps the most intense coming from Saturday to Saturday night. The rainfall has already caused scores of flash flood warnings, with runoff inundating some neighborhoods. Many small streams have overflowed banks or soon will at a rapid pace, adding to the danger of severe thunderstorms, some packing tornadoes. Similar to what happened with Helene in the southern Appalachians, roads and bridges along small streams may be washed away, and small streams can become raging torrents of high water that put lives in peril and wash away homes and the app? Unlock AccuWeather Alerts™ with Premium+ In some cases, the rate of rain has overwhelmed, and will continue to overwhelm, storm drainage capabilities. When done, this could end up being a once-in-a-500- to 1,000-year rain event. Because of the scope of rainfall projected, AccuWeather meteorologists have issued a rare catastrophic flood impact and a massive zone of extreme flood impact. Such a situation has not unfolded since Helene. When the repeating rounds of rain finally finish later this weekend, a broad area will exist where 8-16 inches of rain has fallen, with local amounts to as high as 20 inches. The AccuWeather Local StormMax™ rainfall for the event spanning Wednesday to Saturday night is 21 inches. The final amount of rain projected is equivalent to two to four month's worth of rain in the region. Rain has not fallen evenly across the region, due in part to the orientation of the atmospheric river, or the plume of moisture-rich air originating from the Caribbean and Gulf. However, a more progressive and widespread round of intense rain is forecast from Saturday to Saturday night. This will occur as the caboose in the train of moisture-rich storms moves along. In some cases, from late Saturday to Saturday night, multiple hours of extreme rain and life-threatening flash flooding may follow the terror of severe thunderstorms with tornadoes from the mid-Mississippi Valley to portions of the Ohio and Tennessee valleys. Even long after the rain ends in the region from later Sunday on, all the water that gathered in urban areas and small streams will continue to flow and surge into progressively larger rivers in the region. Flooding on the secondary rivers will be followed by flooding along the largest rivers in the region--the Ohio and lower Mississippi. Moderate to major flooding is forecast along these massive waterways. Some major roads and highways could be underwater for an extended period. Because water takes many days and weeks to reach a crest then drop below flood stage, some unprotected areas along the Ohio and Mississippi could be underwater for a long period of time. This means that, in some cases, farmland could be inundated or too muddy to access well into the growing season. The northern cutoff for the high water on the Mississippi is just below St. Louis, as the heaviest rain has and will continue to stay to the south of the major port on the river. However, heavy rain has fallen on the Merrimec River basin just south of St. Louis and is leading to significant flooding. It may take two to three weeks for the surge of water to cycle to the Mississippi Delta region, including the Atchafalaya flood control zone and later New Orleans. The high and fast-moving water will negatively affect tug and barge operations on the Ohio and lower Mississippi rivers. Due to high water, the tugs will not be able to pull as many barges or may not be able to reach some ports. As the caboose storm picks up forward speed late Saturday night and Sunday, it will spread much-needed rain to drought and wildfire-ravaged areas of the southern Appalachians and the Carolinas. While the rate of rain can be heavy in these areas with highly localized flash and urban flooding, the widespread problems over the mid-Mississippi basin should not be repeated. However, there will be severe weather from Sunday to Monday in the Southeast states. The severe weather risk includes the potential for a few tornadoes. Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
Yahoo
25-03-2025
- Climate
- Yahoo
Inches of rain coming to Texas to be beneficial and problematic
A developing storm over north-central Mexico will slowly swing across parts of the south-central United States later this week with drought-quenching rain and the risk of flash flooding, AccuWeather meteorologists say. Drenching showers and thunderstorms will first erupt along the Rio Grande Valley from southern New Mexico to the Gulf Coast Wednesday. From there, the main storm will move slowly along to the northeast, along the western Gulf Coast from Thursday to Friday. The storm will be in a perfect position to tap rich Gulf moisture and wring it out in the form of drenching downpours and locally gusty thunderstorms. Which areas will get the most rain? Enough rain will pour down in coastal and even central parts of Texas and later Louisiana to lead to flash flooding in rural and urban areas. Motorists should be prepared for dangerous conditions in low-water crossings in rural areas, ponding on highways, and even flooding that may occur on some city the app? Unlock AccuWeather Alerts™ with Premium+ The cities of Houston, San Antonio, Austin, Corpus Christi and Victoria, Texas, will be thoroughly drenched from the storm, while areas farther north and west in Dallas, Abilene and Brownsville, Texas; and Lafayette and Shreveport, Louisiana, will also receive a good soaking. Along a portion of the central Texas coast, 4-8 inches of rain are forecast to fall with an AccuWeather Local StormMax™ of 14 inches. While this amount of rainfall is on par with a weak tropical storm, it is not a tropical system. Storm to ease drought in many areas Rainfall deficits in Victoria, for example, have fluctuated from 40-65% of the historical average during last fall and into this winter. However, since Feb. 1, rainfall has been less than 25% of the historical average. Since March 1, that has dropped to a mere 6%. The limited rain over many months and very little rain in recent weeks have significantly increased drought conditions. In some areas south and west of Houston, extreme to exceptional drought conditions exist. So where any rain falls in these areas, it will be extremely beneficial. Next stop for the storm The same storm system will slowly move into the Mississippi Valley by the weekend, where it may initially inhibit severe weather farther to the north and west. However, that may only briefly delay a potential severe weather outbreak later this weekend to early next week in the Central and Eastern states. Preliminary storm into Wednesday Prior to the rainstorm going full swing over southeastern Texas, a small and fast-moving storm will spread showers and heavier thunderstorms from north-central Texas and southern Oklahoma to Louisiana into Wednesday evening. Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
Yahoo
17-03-2025
- Climate
- Yahoo
More severe weather looms for central, eastern US this week
In the wake of a deadly and destructive severe weather and tornado outbreak this past weekend, a new multiday severe weather threat will build in the central United States by midweek and may shift to parts of the East Coast before Friday, AccuWeather meteorologists warn. Like this past weekend's storm, this week's storm will bring everything from blowing dust and wildfire danger to snow and blizzard conditions and severe thunderstorms. More than 1,000 reports of severe weather, mostly high winds, from Friday to Sunday, including more than 90 tornadoes, are being investigated. The storms have claimed the lives of at least 40 people, with dozens more injured. There are some similarities in this week's severe weather setup versus this past weekend. Like last weekend, a large storm will move out of the Rockies and onto the Plains. The storm will tap into warm, moist air from the Gulf, and jet stream winds will give thunderstorms a significant boost to severe levels. However, the storm coming out, while strong, is not quite as intense as this past weekend. Ground-level winds will not be as ferocious over the southern Plains with this storm. Moisture will be increasing, but not to the extent of the storm this weekend, and the jet stream setup is somewhat fragmented-this could limit the scope and intensity of the severe weather. A secondary storm is also expected to form that may disrupt the uptick in severe weather and cause the threat zone to shift significantly from one day to the next. Winds with this week's storm will still be strong enough to raise the risk of wildfires and dust over the southern Plains. There will be a growing risk of thunderstorms packing damaging winds and hail. Storms Tuesday night will center on northern Missouri, northeastern Kansas, southeastern Nebraska and Iowa. They could produce significant and damaging hail, torrential downpours and strong wind gusts. The setup for tornadoes is significantly different--less favorable for swarms of tornadoes compared to this past Friday and Saturday. However, there will likely be at least a few tornadoes with the multiday event and the few that develop can be strong. Portions of Iowa, Illinois, Michigan, Ohio, Indiana, Missouri, Kentucky, Tennessee and Mississippi are at risk of severe thunderstorms, including a few tornadoes, on Wednesday and Wednesday night. Damaging straight-line wind gusts and hail will be the main threats from Wednesday to Wednesday night. The AccuWeather Local StormMax™ wind gust with Wednesday's storms is 80 mph. •Have the app? Unlock AccuWeather Alerts™ with Premium+ A widespread severe weather and tornado outbreak is unlikely at this point, and because of this, AccuWeather meteorologists have not issued a high-risk for the event. However, isolated tornadoes can still be devastating to those affected. For this reason, and because conditions can still escalate, all severe weather alerts should be taken seriously, and people should remain vigilant. Depending on how quickly a secondary storm forms in the Southeastern states on Thursday, there may be a risk of severe thunderstorms in portions of the Carolinas, Virginia, Maryland, Delaware, Georgia and northern Florida. The speed at which this storm forms could prevent much severe weather in the zone from the upper Ohio Valley to the eastern Great Lakes, including the western slopes of the central Appalachians. This zone was hit hard by damaging winds on Sunday. However, that same secondary storm could evolve into heavy wet snow for parts of the central Appalachians, mid-Atlantic and New England during Thursday night and Friday. Want next-level safety, ad-free? Unlock advanced, hyperlocal severe weather alerts when you subscribe to Premium+ on the AccuWeather app. AccuWeather Alerts™ are prompted by our expert meteorologists who monitor and analyze dangerous weather risks 24/7 to keep you and your family safer.
