Like Harvey, Imelda produced rainfall totals that measured in feet rather than inches. On Sept. 27 at 5 a.m. EDT (0900 UTC), Tropical Depression 19W had maximum sustained winds near 25 knots (29 mph)/46 kph). "If you want to change your mind, it's too late," she said. That rising air helps thunderstorms develop. If a storm takes on a more rounded shape it is getting more organized and strengthening. This isn’t that unheard of, but still worth noting.”. For updated forecasts. Karen was centered about 405 miles (650 km) south-southeast of Bermuda. Additional strengthening is forecast during the next couple of days, and Lorenzo is forecast to become a major hurricane by Thursday [Sept. 26]. For updated forecasts. The satellite imagery revealed that Lorenzo was getting better organized as it was strengthening. Narda is moving toward the northwest near 15 mph (24 kph), and this general motion is expected to continue with some decrease in forward speed during the next couple of days. NASA-NOAA’s Suomi NPP satellite passed over the Northwestern Pacific Ocean and provided forecasters at the Joint Typhoon Warning Center with a view of Tropical Depression 19W’s structure that helped confirm it is now a depression. Chihuahua…1 to 3 inches. A turn toward the northwest is expected late Thursday. Karen was moving toward the north near 15 mph (24 kph). Visit: www.nhc.noaa.gov, By Rob Gutro  Forecasters at NOAA’s National Hurricane Center or NHC incorporate the rainfall data into their forecasts. The latest hurricane watches and warnings for the Atlantic Basin. The VIIRS imagery helped confirm that the storm is now a depression and appears to be strengthening toward tropical storm status. Sep. 09, 2019 – NASA Estimates Hurricane Dorian’s Massive Rainfall Track On Monday morning, September 9, Hurricane Dorian was a post-tropical storm after a mid-latitude weather front and cold seas had altered its tropical characteristics over the weekend. Humberto formed on September 13 from the prolonged interaction of a tropical wave and an upper-level trough, then paralleled the eastern coastline of Floridathrough September 16 bef… A wind gust to 44 mph (70 kph) was recently reported at San Blas, Mexico. That puts Lorenzo’s eye about 995 miles (1,600 km) west of the southernmost Cabo Verde Islands. Lorenzo is moving toward the west-northwest near 17 mph (28 kph), and this motion is expected to continue through Thursday. They can be as big as tens of miles in diameter or smaller such as a mile or less, and can be immensely intense. The storm became a tropical depression on August 31 st off the African Coast. The Azores is a self-governing region of Portugal. NOAA’s National Hurricane Center or NHC said at 5 a.m. EDT (0900 UTC), the center of Tropical Storm Karen was located near latitude 28.3 degrees north and longitude 61.2 degrees west. On September 3, Dorian resumed a northward track that paralleled the coast from Cape Canaveral to Cape Hatteras. NPP also showed a cloud-filled eye with clouds expanding to the northern quadrant. NHC posted a Hurricane Watch for Flores, Corvo, Faial, Pico, Sao Jorge, Graciosa, Terceira, and a Tropical Storm Watch is in effect for Sao Miguel, Santa Maria. NASA’s expertise in space and scientific exploration contributes to essential services provided to the American people by other federal agencies, such as hurricane weather forecasting. Hurricane Dorian was the first major hurricane of the 2019 Atlantic Hurricane Season. The Suomi NPP satellite passed over the eastern Atlantic Ocean on Sept. 29, after Lorenzo’s peak when it weakened back to a Category 4 hurricane. The estimated minimum central pressure is 1004 millibars. All of them are under a watch from Lorenzo. NASA’s Terra satellite captured an image of Tropical Storm Karen on Sept. 26 and found the strongest thunderstorms west of center. 3) In addition to threatening the Azores, Lorenzo is having quite the impact in the North Atlantic, despite being in the Eastern North Atlantic. Maximum sustained winds remain near 145 mph (230 kph) with higher gusts. Philippines warnings still in effect include wind signal #1 for the Luzon provinces of Batanes and Babuyan Islands. Tropical Storm Imelda was a prime example that it doesn't take a monstrous storm like Dorian to produce major impacts. The first was an EF0 tornado in the Myrtle Grove area at 5:58 a.m. Tropical cyclones are made up of hundreds of thunderstorms. The others include Dorian, Michael, Maria, Irma and Matthew. Hagibis was just the third category 5 tropical cyclone globally in 2019 (Super Typhoon Wutip and Hurricane Dorian were the others). Hurricane-force winds extend outward up to 35 miles (55 km) from the center and tropical-storm-force winds extend outward up to 205 miles (335 km). NASA’s Terra Satellite provides a variety of data on tropical cyclones including cloud heights and cloud top temperatures. Conversely, if it becomes less rounded or elongated, it is a sign the storm is weakening. Maximum sustained winds are near 40 mph (65 kph) with higher gusts. NASA’s Goddard Space Flight Center. The storm was moving to the west. The estimated minimum central pressure is 937 mb (27.67 inches). Hurricanes are the most powerful weather event on Earth. The slightly ragged but clearing eye of the hurricane is surrounded by very cold cloud tops, and it has become clear that Lorenzo is rapidly intensifying. NASA’s Goddard Space Flight Center. At 45°W, it was the farthest east of any Category 5 hurricane in the Atlantic on record. September was a considerably more active month than predicted, as was October, while August saw very little storm activity. The previous record-holder was Hurricane Hugo (1989), which reached that intensity at 54.6°W. A turn toward the north is then anticipated on Saturday, Sept. 28. NPP imagery showed mesospheric gravity waves quite possibly due to the energy being released as the storm weakened. The areas covered include the Atlantic Ocean, Gulf of Mexico and the Caribbean Sea. Maximum sustained winds are near 40 mph (65 kph) with higher gusts. Lorenzo is a large hurricane. On Sept. 26, the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA’s Terra satellite provided a visible image of Lorenzo as a major hurricane. That puts the center approximately 908 nautical miles southeast of Kadena Air Base, Okinawa Island, Japan. Karen is moving toward the north-northeast near 14 mph (22 kph), and this motion is expected to continue with a decrease in forward speed through this evening. By 11 p.m. EDT, infrared imagery showed a small eye had been appearing intermittently. The estimated minimum central pressure is 983 millibars. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. Lorenzo set several records for being one of the strongest and longest-lived hurricanes recorded east of 45°W. Weakening should begin by Tuesday as Narda interacts with the mountains of western Mexico. Karen is then expected to slow down and make a clockwise loop over the southwestern Atlantic into the weekend.”. Visible satellite image of Hurricane Dorian at 12:30 pm EDT September 1, 2019. Hurricane Lorenzo may be remembered as the most unique storm of 2019. On Sept. 30, 2019 at 8 a.m. EDT (1200 UTC), NOAA’s National Hurricane Center issued watches for the Azores Islands. Narda is expected to produce the following rainfall accumulations through Tuesday: Nayarit, Sinaloa…Additional 3 to 6 inches, isolated storm totals 10 to 15 inches. It was the eighth named storm, third hurricane, and second major hurricane – Category 3 or higher on the Saffir–Simpson scale – of the 2019 Atlantic hurricane season. The reason has to do with both wind and water. These swells are likely to cause life-threatening surf and rip current conditions.”. After some modest weakening, Lorenzo rapidly intensified and briefly attained Category 5 status on September 29. They can do that because infrared data provides temperature information, and the strongest thunderstorms that reach highest into the atmosphere have the coldest cloud top temperatures. Karen is then forecast to make a slow clockwise loop, ultimately moving westward by early Sunday. The eleventh tropical cyclone and ninth named storm of the 2019 Atlantic hurricane season, Imelda formed out of an upper-level low that developed in the Gulf of Mexicoand moved westward. Overview. Tropical cyclones are made of up hundreds of thunderstorms, and infrared data can show where the strongest storms are located. The estimated minimum central pressure is 955 millibars. Weakening is forecast by the weekend, and Karen is expected to become a remnant low by Sunday, Sept. 29. The hardest hit islands were Abaco and Grand Bahama in the north-western section of the country. The Azores consist of nine inhabited islands. Lorenzo, as a Category 4 hurricane has a long reach with ocean swells. On September 26, it rapidly intensified into a On Sept. 26, the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA’s Terra satellite measured clouds heights and temperatures. GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA. Hurricane Dorian - September 6, 2019. Author Lynn Jenner Posted on September 20, 2019 September 23, 2019 Categories Earth, Earth Hazards, Hurricanes Tags Imelda 2019 Tapah – Northwestern Pacific Ocean Sep. 19, 2019 – NASA Analyzes Rainfall Rates in New Tropical Storm Tapah visit: www.nhc.noaa.gov. Little development occurred until the system was near the Texas coastline, where it rapidly developed into a tropical storm before moving ashore shortly … The twelfth named storm, fifth hurricane, third major hurricane and second Category 5 hurricane of the 2019 Atlantic hurricane season, Lorenzo developed from a tropical wave that moved off the west coast of Africa on 22 September, growing larger in size over the course of its development. Straka said, “Something interesting to note is that the mesospheric gravity waves from Lorenzo could be seen up to 1,180 km (733 miles) away. It was located near 22.8 degrees north latitude and 123.0 degrees east longitude, about 161 nautical miles south-southeast of Taipei, Taiwan. It formed in the Main Development Region to the east of the Windward Islands. NOAA’s National Hurricane Center noted that visible satellite images, such as the one from NASA’s Terra satellite and wind data from NOAA buoy 40149 to the northeast, suggest that the low-level circulation is becoming elongated. Karen is forecast to degenerate into a remnant low by Saturday. The storm moved slowly to the West and strengthened along its route, reaching Cat. Imelda was barely a tropical storm for just six hours on September 17, but it was another slow-moving storm. Along the Outer Banks, businesses were closed and everyone was ordered to evacuate. The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard Suomi NPP provided an infrared image of the storm. That heavy rainfall potential is incorporated into the forecast for Sept. 30 from NOAA’s National Hurricane Center (NHC). Slow weakening is forecast to begin by the weekend. Mitag is moving north, close to the east coast of Taiwan and forecasters at the Joint Typhoon Warning Center noted that Mitag is at peak intensity. The African coast is still clearly visible just east of the storm in the satellite image taken around this time. This satellite image obtained from NOAA/RAMMB, shows Hurricane Lorena on September 19, 2019 as it made landfall on the southwest coast of Mexico Lorenzo is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Hurricane tracking maps, current sea temperatures, and more. On the 23rd, a well-defined surface low On the forecast track, the center of Narda will move over the Gulf of California near the coast of northwestern mainland Mexico through Tuesday, Oct. 1. NHC said, “A north-northeastward to northeastward motion with a decrease in forward speed is expected through early Friday. NHC said recent microwave data and surface observations from Mexico indicate that the center of Narda is located just offshore of the west coast of mainland Mexico, north of Islas Marias. Sep. 30, 2019 – NASA-NOAA’s Suomi NPP Analyzes Record-Setting Hurricane Lorenzo Over the weekend of Sept. 28 and 29, Hurricane Lorenzo attained Category 5 strength briefly, becoming the strongest hurricane on record in the eastern-most Atlantic Ocean. The center of Tropical Storm Narda was located near latitude 22.5 degrees north and longitude 106.4 degrees west. NASA’s Terra Satellite provided a visible image of Lorenzo that revealed a clear eye and a solid structure of thunderstorms around the eye. Baja California Sur, Sonora…1 to 2 inches. Conversely, if over a period of time, satellite data shows cloud tops falling and warming, it is an indication the storm is weakening because there’s not as strong an uplift or rising air in the storm. Earlier in the day, at 5 a.m. EDT, infrared satellite data showed that Narda continued to produce very intense deep convection (strong thunderstorms) with cloud tops colder than minus 80 degrees Celsius (minus 112 degrees Fahrenheit). Maximum sustained winds are near 45 mph (75 kph) with higher gusts. Hurricane Florence was a long-lived tropical cyclone that brought devastating flooding to the Carolinas in September 2018. If a storm takes on a more rounded shape it is getting more organized and strengthening. Terra examined those factors in Tropical Storm Karen in the North Atlantic Ocean and data showed Karen holding onto tropical storm status. On Sept. 27, 2019, the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard Suomi NPP provided a visible image of newly developed Tropical Depression 19W. 19W was centered near 14.4 degrees north latitude and 136.2 degrees east longitude. An aerial view of damage and flooding caused by Hurricane Dorian on Great Abaco Island in the Bahamas on September 4, 2019. Lorenzo is forecast to turn toward the northwest and begin moving at a slightly slower speed later today. Some fluctuations in strength are possible today. GPM found heavy rain falling at a rate greater than 1.6 inches (40 millimeters) southwest of Karen’s center over the Atlantic Ocean and just north of central Puerto Rico. Some strengthening is forecast during the next couple of days. On Sept. 30, the Moderate Imaging Spectroradiometer or MODIS instrument that flies aboard NASA’s Aqua satellite provided a visible image of Narda. By analyzing the heights of thunderstorms and their cloud top temperatures, forecasters can tell if a storm is strengthening or weakening. NASA research has shown that storms with cloud top temperatures that cold can produce heavy rainfall. The MODIS image showed the cyclone continues to produce a large area of deep convection near and to the west of its center. Tropical Storm Karen has crossed over Puerto Rico and into the western Atlantic Ocean. The 1-5 scale estimates potential property damage. September 10 is considered the exact peak of the Atlantic hurricane season. Jalisco, Colima, Michoacan…Additional 1 to 3 inches, isolated storm totals 10 to 15 inches. The VIIRS image showed the storm had already developed some strong thunderstorms around its center with a band of strong storms feeding into the center from the southeast. "It's bad," she add… The strength of the storm also was producing mesospheric gravity waves. It formed in the Main Development Region to the east of the Windward Islands. NASA research has shown that cloud top temperatures that cold have the capability to generate heavy rainfall. It stalled over eastern Texas and maintained a steady supply of moisture from the Gulf of Mexico, reminiscent of Hurricane Harvey in 2017. NOAA defines a gravity wave as a wave created by the action of gravity on density variations in the stratified atmosphere. More details of Dorian's formation and impacts on the Bahamas can be found in last month's report. On Sept. 26, shortly after 5 a.m. EDT (0900 UTC), the National Hurricane Center (NHC) said Lorenzo’s eye quickly and drastically became more apparent in conventional satellite imagery. Read CNN's 2019 Atlantic Hurricane Season Fast Facts to learn more about tropical storm systems that develop during the summer and autumn. September Is Peak Hurricane Season. As the flooding worsened Friday morning, Warner told the AP in a phone conversation that "it's certainly a mess." There have been 26 Category 5 storms since 1960 with Lorenzo being the latest. Tropical Storm Imelda was the fifth-wettest tropical cyclone on record in the continental United States, causing devastating and record-breaking floods in southeast Texas. “As with other strong hurricanes, the eye was well defined along with mesovortices seen,” said William Straka III, a researcher who created some Suomi NPP images at the University of Wisconsin – Madison, Space Science and Engineering Center (SSEC), Cooperative Institute for Meteorological Satellite Studies (CIMSS). NASA’s Aqua satellite is one in a fleet of NASA satellites that provide data for hurricane research. For updated forecasts, visit: www.nhc.noaa.gov. Terra data also found that cloud top temperatures were as cold as or colder than 200 Kelvin (minus 99.6 degrees Fahrenheit/minus 73.1 degrees Celsius) in those storms. It developed into a tropical storm on September 23 just one day after its parent easterly wave emerged from African coast. This image shows NASA IMERG estimated rainfall accumulations for the region of the Bahamas affected by Hurricane Dorian from Aug. 31 to Sept. 4. At 11 a.m. EDT (1500 UTC), the center of Tropical Storm Karen was located near latitude 26.6 degrees north and longitude 63.3 degrees west. Lorenzo is moving toward the north-northwest near 14 mph (22 km/h), and this general motion is forecast to continue today. At 5 a.m. EDT (0900 UTC), on Sept. 27 the center of Hurricane Lorenzo was located near latitude 18.6 degrees north and longitude 42.1 degrees west. Mitag’s western quadrant had already spread clouds and precipitation over Taiwan. The 2019 Atlantic hurricane season was the fourth consecutive above-average and damaging season dating back to 2016.It is tied with 1969 as the fifth-most active Atlantic hurricane season on record in terms of named storms, with 18 named storms and 20 tropical cyclones in total. The shape of the storm is a clue to forecasters that a storm is either strengthening or weakening. The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard Suomi NPP provided infrared data on Lorenzo. Satellite data has confirmed that Lorenzo is a major hurricane in the eastern North Atlantic Ocean with an impressive structure. The image and other satellite images showed a well-defined eye. In the early hours of Tuesday, September 3, Hurricane Dorian had been stationary over the island of Grand Bahama for 18 hours, most of the time as a category 5 hurricane. So far, 2019 has had 12 named storms and five hurricanes - four of which were formed in September, according to the NOAA. 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