Provided by our good friend Mark Sudduth at http://www.hurricanetrack.com/ It is not often that we talk about development of a tropical cyclone in the Atlantic at this time of year. Once in a while, it does happen and this year is one of those times. For several days, computer models have suggested the development of low pressure somewhere near Florida. Earlier this afternoon, the NHC issued a special tropical weather outlook which replaces the special tropical disturbance statement that was used for many years. The special outlook referenced a weak area of low pressure that has formed over eastern Cuba and the southeast Bahamas. The statement goes on to say that there is a fairly low chance of continued development right now. None the less, a Hurricane Hunter plane is tasked to further investigate the area tomorrow if need be. The low and associated weather will bring unsettled weather to the Bahamas, Cuba and Florida over the next several days. In fact, Florida is being hammered by rain this evening due to an unrelated weather feature. The entire complex system of low pressure areas and a dying front in the region will mean that heavy rains, high seas and rough surf are in store for Florida and possibly surrounding states over the remainder of the week. This will do much to relieve the dry conditions but without the severe effects of a tropical storm or hurricane. Be aware, however, of changing weather conditions, especially along the beaches, where rip currents could be an issue. As always, refer to your local NWS forecast office for details on your specific area. As a side note, the low pressure area is also known as "90L". Some of you know exactly what this means and why. For those that don't, let me explain. I wrote NHC forecaster and chief of the hurricane specialists unit, James Franklin, to shed some light on the subject. He tells me that the NHC will label or designate an area of disturbed weather as an "invest" for the Atlantic and east Pacific (the Joint Typhoon Warning Center may also do this for the east Pacific if they wish). This means that the area is tagged and then labeled with a number, 90-99 (then it starts over), and the letter "L" for Atlantic (or "E" for east Pacific). Upon this designation, additional resources such as microwave satellite data and computer model guidance, are allocated to the suspect area for additional investigation. So, when we talk of "90L", etc. this season, you now know what this means. |
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NATIONAL HURRICANE CENTER HAS EYES ON LOW PRESSURE AREA IN SOUTHWEST ATLANTICposted May 18, 2009 3:16 PM by Douchey McQueeferson [ updated May 18, 2009 3:24 PM ] |