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* Bertha becomes the earliest Major Hurricane since Hurricane Dennis (July. 7, 2005). * Bertha and Dennis now both tie as the earliest Major Hurricanes on record since Hurricane Audrey (1957). * Bertha becomes the earliest tropical cyclone to become a hurricane this far east. * Bertha is upgraded to a Hurricane on the same day as the historic Bertha of 1996 was; however, Bertha 2008 also becomes a major hurricane two days sooner. * Bertha became the sixth strongest "early season" hurricane on record. (Those forming before August 1st). * Bertha became a named storm the farthest east of any on record for the months of June and July. * Bertha became our first Cape Verde tropical cyclone of 2008, and one of the earliest on record. This is information that I have collected and is accurate to the best of my knowledge, thus far. It may or may not be entirely accurate, and there could also be more I have not listed, and yet more to come. |
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don't forget to consider those storms in july 1916... they had a real rough july. some years in the 1880s (86?), and then before that outside of the hurdat database (i.e. 1844) had active/early stuff. HF 1315z13july |
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Of course, we're really just focusing on satellite-era stuff, as anything before then means that we might just be comparing apples to oranges in terms of technique. Still, all of the above is gathered from sources who have done well to take into account the known cyclones in the data prior to satellites. |
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A few more that have come to light * Easternmost forming "early season" major hurricane at 52.1°W (Those forming prior to August.) * Unusually large 90 mile-wide eye (Possibly a new record in the Atlantic... certainly a rarity). |
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From Bertha Discussion #51 TPC/NHC July 15, 2008 Quote: |
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*Bertha is now the longest-lived July hurricane on record, and also the longest-lived hurricane so early in the season, having eclipsed Hurricane Emily (2005), which held the old record of 7 days. |
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According to research by Margie Kieper as reported by Dr. Jeff Masters in Wunderground: Quote: In the interest of accuracy, on this I do need to point out 2 small disclaimers First - I am guessing that Dr. Masters meant to type July 20, 2008, as on July 19, 2008 now Tropical Storm Dolly had yet to be a numbered tropical depression, let alone named storm. Second - Bertha was barely hanging on to enough tropical characteristics on the morning of July (20) for the National Hurricane Center to continue advisories on her as a tropical cyclone. However, disclaimers-aside, the rest of these numbers seem solid. With the inclusion of Dolly, Cristobal and still-tropical cyclone Bertha, July (20) 2008 probably marked the first July day since record keeping began that three July tropical storms were active on the same date. A mighty impressive feat for this season, and surely yet another in the now long list of feathers in Bertha's cap! |
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There is no doubt in my mind that the statistic is accurate - and you are correct, the date was (or should have been) July 20th. I've always found it interesting that data records like this are linked to bulletins issued by a particular agency (eons ago it was the U.S. Weather Bureau) on a scheduled timeframe which has nothing to do with the actual meteorological event. The other side of that coin is that the intent of the bulletin has nothing to do with meteorological records. There is also a bias toward the start of an event, but not the end of that event. Although not the case with Dolly, the use of a Special Tropical Disturbance Statement will often highlight the beginning of a Tropical Depression (advisories will be initiated at 11am), but no similar bulletin will be issued when a tropical cyclone becomes extratropical - it is simply noted on the final 6-hour advisory. There is some interesting evidence though that supports Invest 94L as a Tropical Storm a full 12 hours before it officially became 'Dolly". The Invest 94L Model Input bulletin (issued by NHC) had the sustained winds at 35 knots at 20/06Z and 40 knots at 20/12Z. While it certainly takes more than wind speed alone to determine the formation of a Tropical Depression, it is also a no-brainer to realize that Invest 94L must have reached Tropical Depression status (meteorologically) at some point before it was recognized as a Tropical Storm. The lack of any official recognition (bulletin) of that change in the status of 94L doesn't change the recognition that 94L became a tropical cyclone at some point before Bertha became an extratropical one. Regarding three simultaneous tropical cyclones in July, one other date came close - July 22, 1966. 'Celia' became extratropical on July 21st at 18Z and was still extratropical on July 22nd at 06Z. 'Ella' became a Tropical Depression on July 22nd at 12Z and 'Dorothy' became a Tropical Depression on July 22nd at 18Z - close, but not quite there. Cheers, ED |
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for those interested... here is what Bertha looked like from inside the storm http://www.wunderground.com/blog/LRandyB/show.html |
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Quote: This impresses me all the more that over 40 years have passed since even a runner-up to the 2008 trios' show stopper. It will be interesting to see if any time is added retroactively to Dolly's record. I think that a case might even further be made that she was briefly a depression way out in the CATL, before weakening back into an open wave. |
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Late Addition: *Bertha also became the fourth longest-lived named storm since 1950 to have formed in -any- month - behind only Ginger (1971) 21.25 Named Storm Days, Carrie (1957) 19.50 NSD & Alberto (2000) 19.25 NSD. |