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Tag Archives: Upper level

Heavy showers and thunderstorms for SW Florida UFN… (H. Michael Mogil, CCM, CBM, NWA-DS*)

The weather pattern the past two days (Sunday, September 6 and Monday, September 7, 2020) is finally heralding the arrival of our tried and true summer rainfall regime.  Up to this point, the pattern has experienced numerous fits and starts, but never really became entrenched.  As a result, rainfall for

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From Drought To Flood (H. Michael Mogil, CCM, CBM, NWA-DS*)

About 10 days ago, a major brush fire (linked to a growing drought) erupted to the east of Naples, along I75.   The fire eventually grew to more than 8,000 acres.  Today, the same area is under a Flood Watch (Fig. 1) meaning that some two to four inches rainfall could

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Ophelia Racing Toward The U. K. (H. Michael Mogil, CCM, CBM, NWA-DS*)

While the remnants of hurricanes occasionally affect the British Isles, Hurricane Ophelia is going to be much stronger than the average United Kingdom (U.K.) storm. As of early this Sunday morning, Ophelia, still a category 2 hurricane (Saffir-Simpson Hurricane Scale), was forecast to become extra-tropical before land-falling in Ireland on

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More heavy rainfall for southwest Florida (H. Michael Mogil, CCM, CBM, NWA-DS*)

Rainfall for June (now almost only half over) is already at rarified levels. Many locations across southwest Florida have logged 15 to 20 inch values. And more rainfall is anticipated. In fact, for the Naples area (my home base), the official National Weather Service (NWS) forecast is calling for 50

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Vertical atmospheric mixing – Part 2 (H. Michael Mogil, CCM, CBM, DMS)

A few weeks ago, I posted an article about vertical atmospheric mixing. The article focused on a single day (Oct. 10, 2016) in Portland, ME. In the article, I looked at both the variability of winds during a 24-hour period (day versus night) and also examined atmospheric soundings. Today, I’d

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Mostly a good weather forecast (H. Michael Mogil, CCM, CBM, DMS)

The following is combined forecast and weather-torial. It reflects my opinions only and not those of the GWCC web site, its directors and/or its correspondent base. During severe weather situations, the media (and the NWS) are quick to note the number of people (in the 10’s of millions) who are,

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Vertical atmospheric mixing (H. Michael Mogil, CCM, CBM, DMS)

Most of us have seen what happens when a pot of water, sitting on a heated stove top, starts to boil. Bubbles form on the bottom of the water, and when they get big enough, they start to rise. But, if all the bubbles were to rise without any water

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Matthew heading for Florida… (H. Michael Mogil, CCM, CBM, DMS)

There’s an old expression about, “proximity.” It goes, “close, but no cigars.” That was clearly contrived in another era. However, in the case of Matthew, close may be close enough. The latest National Hurricane Center’s (NHC) projected track for Matthew brings him very close to the Florida east coast near

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Omega block expected across western North America… (H. Michael Mogil, CCM, CBM, DMS)

Computer models keep suggesting the development of an “omega block” across western Canada by late this week. Such a block can involve a splitting of the overall upper level wind flow by a closed high to the north and a closed low to its south (Fig. 1). Alternatively, the pattern

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Tropical Storm Hermine is now getting weird (H. Michael Mogil, CCM, CBM, DMS)

Take a look at today’s early morning (Sept. 3, 2016) Hermine forecast track from the National Hurricane Center – NHC (Fig. 1) and you’ll see several things appear to be, well, just plain weird. However, there is some good rationale behind each of these. First, Hermine is expected to slow

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