An area of low pressure developed east of the Bahamas and the system was designated as Invest 90L on Sunday afternoon.\u00a0 At 5:00 p.m. EDT on Sunday the center of Invest 90L was located at latitude 24.0\u00b0N and longitude 71.0\u00b0W which put it about 260 miles (420 km) east of the Bahamas.\u00a0 Invest 90L was moving toward the northwest at 11 m.p.h. (17 km\/h).\u00a0 The maximum sustained wind speed was 40 m.p.h. (65 km\/h) and there were wind gusts to 50 m.p.h. (80 km\/h).\u00a0 The minimum surface pressure was 1009 mb.<\/p>\n
The circulation of Invest 90L consists of a large asymmetrical low pressure system.\u00a0 Most of the showers and thunderstorms are occurring northeast of the center of circulation.\u00a0 Those showers and thunderstorms are being generated by convergence of winds from a large high pressure system over the north Atlantic Ocean into the area of low pressure.\u00a0 A swirl of low clouds has emerged on the southwestern side of the low, but it is unclear if this is the actual center of circulation or is just a transient mesoscale feature.\u00a0 A strong pressure gradient between the high pressure system and the low is producing an area of winds to tropical storm force northeast of the center of the low.\u00a0 The winds are weaker in other parts of the circulation.<\/p>\n
Invest 90L is in an environment that is mostly unfavorable for tropical cyclones.\u00a0 It is moving over water where the Sea Surface Temperature is near 25\u00b0C.\u00a0 So, there is less energy in the upper ocean to support tropical development.\u00a0 An upper level trough over the southeastern U.S. is producing strong southwesterly winds which are blowing across the top of Invest 90L.\u00a0 Those winds are producing strong vertical wind shear.\u00a0 Marginal Sea Surface Temperatures and strong vertical wind shear make the classical development of a tropical cyclone unlikely.\u00a0 However, the temperature in the upper troposphere is also cold and there may be enough instability in the atmosphere to produce thunderstorms.\u00a0 If the wind shear decrease, then more thunderstorms could develop closer to the center of circulation and a subtropical cyclone could form.<\/p>\n
The high over the north Atlantic is blocking northward movement of Invest 90L and the high is steering it toward the northwest.\u00a0 A general northwesterly motion is expected to continue for another day or so.\u00a0 Eventually the high will move off to the east and Invest 90L will start to move toward the northeast.\u00a0 On its anticipated track Invest 90L will stay east of the U.S. and the Bahamas.\u00a0 Invest 90L could pass close to Bermuda and it has the potential to bring gusty winds.<\/p>\n","protected":false},"excerpt":{"rendered":"
An area of low pressure developed east of the Bahamas and the system was designated as Invest 90L on Sunday afternoon.\u00a0 At 5:00 p.m. EDT on Sunday the center of Invest 90L was located at latitude 24.0\u00b0N and longitude 71.0\u00b0W which put it about 260 miles (420 km) east of the Bahamas.\u00a0 Invest 90L was […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,2],"tags":[312,572,31,574,29,97,139],"_links":{"self":[{"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/posts\/3763"}],"collection":[{"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3763"}],"version-history":[{"count":2,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/posts\/3763\/revisions"}],"predecessor-version":[{"id":3765,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=\/wp\/v2\/posts\/3763\/revisions\/3765"}],"wp:attachment":[{"href":"https:\/\/jayhobgood.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jayhobgood.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}