The National Weather Service’s Storm Forecast Center released a 4 out of 5 “moderate risk” level of bad weather for parts of Iowa on Tuesday and for much of the Mississippi Valley on Wednesday, citing “the possibility of strong tornadoes and heavy hail.” The Great Plains could see the most severe drought in a decade Thunderstorms will develop as a result of the collision of dry air with the humidity of the Gulf of Mexico in the east. This same dry air uprising behind the storm will wash away the High Plains, bringing “extremely critical” weather to the fire. “An outbreak of dangerous fire conditions is possible in the southern and central high plains today!” wrote the Storm Prediction Center. On the cold side of the storm, records could fall as a blizzard offers what the Meteorological Service reports as an “extreme collision” in North Dakota. Bismarck could close with half a foot of snow. If the city surpasses the record of 17.8 inches in 2013, it will catch the snowiest April storm it has ever observed. Tornado watches have been in effect since Tuesday night for much of northwestern Iowa and the surrounding area, as well as parts of central Texas. While the tornado potential has appeared higher in the northern danger zone, a large and catastrophic tornado fell in Texas early this afternoon near the city of Salado. A whirlwind soon followed, moving northeast across Iowa, with additional tornadoes looming. More storms that are ready to cause catastrophic winds, hail and tornadoes are also continuing to grow. The action started yesterday. In downtown Arkansas, a baseball-sized hail was reported Monday afternoon in Franklin County, with at least one incident of softball-sized hail in New Blaine, just west of the intersection between Little Rock and Fort Smith. Several tornadoes were also observed, including one that caused a terrible tornado emergency around Little Rock Air Base. No injuries have been reported so far. On Tuesday, the main impetus for the storms will be a sharpening of the dry line, or the dry air peak from the southwestern desert as it penetrates the bay moisture further east. During the day, humidity will flow rapidly north with a warm front extending as far as Minnesota and Wisconsin until nightfall. The dry line will run near Interstate 35 from north-central Texas through Oklahoma and Kansas to Omaha. There are two high-risk zones designed by the Storm Forecast Center – one covering northeastern Kansas through most of Iowa, where level 4 of 5 was issued this morning, and the other between Dallas and Waco. In the meantime, there is still a slight level 2 to 5 hazard for individual strong storms, but a “cap” or hot air cap about a mile above the ground will limit the surface air pockets that attempt to rise and form storms. The Storm Forecasting Center notes that if thunderstorms occur, they will do so in a “potentially strong thunderstorm” environment, but coverage in most areas will be sparse overnight when a series of thunderstorms form on an advanced cold front. In Texas, it can be a little warmer at ground level, leading to more instability or “juice” for storms. In the north along the Corn Zone, greater proximity to an approaching upper air disturbance means a drop in temperature high, which will enhance the greater ascent or upward movement, which can help thunderstorms bloom. Any thunderstorms that break the lid during the day are likely to explode and become supercell storms capable of producing harmful winds, heavy hail and tornadoes. One or two strong tornadoes are possible, given the wind dynamics in the atmosphere. On Wednesday, an energetic dive into the upstream jet stream will shift closer to a cold front and a dry line will merge into one. Meanwhile, a huge warm sector or area of mild and humidity heading north before the low pressure approach will expose a wide range Mississippi Valley Area in Dangerous Storms. Many strong thunderstorms are expected in the Mississippi Valley tomorrow / Wednesday. Strong tornadoes, very heavy hail and significant catastrophic gusts are all possible with the most intense storms. More information can be found at pic.twitter.com/iDbuGraOz0 – NWS Storm Prediction Center (@NWSSPC) April 12, 2022 The Storm Forecast Center on Wednesday afternoon upgraded a large part of the Mississippi Valley to a 4 to 5 degree hazard level, saying “strong tornadoes, very heavy hail and significant catastrophic gusts are possible with the most severe storms.” ” Embracing the river, the moderate risk extends from northern Louisiana to southern Illinois and Indiana, including sites such as Pine Bluff, Ark., Memphis, Tenn. and Evansville, Ind. Around moderate risk, a large level of 3 out of 5 enhanced risk extends from central Louisiana just south of Chicago. Cities at increased risk include St. Louis. Louis, Mo .; Little Rock, Ark .; and Jackson, Miss. Wider marginal and light hazard surround the reinforced strip. Some severe weather is still possible in the low-risk zone. Along the cold front from the Mid-Mississippi Valley to the lower Ohio River Valley, a broken line with built-in circulations, known as the QLCS, or near-linear transmission system, will form. The dashed line will likely contain many instances of catastrophic straight winds over 60 mph and the possibility of tornadoes. In addition, any thunderstorms that develop in front of the line can carry anyone and all serious weather hazards. In the Lower Mississippi Valley, including parts of Arkansas, Mississippi and Louisiana, a strong tornado threat is expected late in the day, as swirling thunderstorms are likely to spread across the area. A severe weather threat could reach the east coast and the southeast on Thursday, before calmer weather prevails over the weekend. The low pressure from the Colorado Front Range will pass through the Nebraska Sandhills en route to northern Minnesota by Wednesday. Moisture wrapped northwest around the low will fall into icy air creeping south after the system, creating huge amounts of snow that could flirt with the files. The National Weather Service forecasts snowfall of up to 30 inches, with a total of 18 to 24 inches in most of central and western North Dakota. Almost the entire state is under a blizzard warning. Snow will increase in coverage and intensity throughout Tuesday as it exits Wyoming and Montana and consolidates. The winds at the back of the low will be strengthened from west-northwest, with gusts between 40 and 50 mph. Strong winds will combine with falling snow to reduce visibility below a quarter of a mile and “very difficult to impossible” journeys. Heavy snow will also fall in eastern Montana and northwestern Minnesota by Wednesday morning. The system will be released in Manitoba and Ontario on Wednesday. in the state, the system will end up in the form of a few spacious light snow showers coming down from Canada. The same low pressure system that creates intense and winter weather will also swirl an extremely dry tongue east in the southern and central High Plains. Continued drought combined with the influx of dried air will further dry out the landscape, contributing to the risk of fires. Adding oil to the fire, we would say, will increase the winds that will blow over 50 mph on Tuesday. This, combined with the recent minimal rainfall, will create an environment where any spark could become a major fire. “An outbreak of dangerous fire conditions is possible in the southern and central High Plains today,” the National Meteorological Service wrote. Some 1.6 million people in West Texas, Texas and Oklahoma Panhandles and southwest Kansas are at “extremely critical” fire risk, including Garden City and Liberal, Kan., Guymon, Okla., And Amarillo. Lubbock and Midland. , Тек.
