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cieldumortModerator
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Entering July with new Tropical Cyclone Watches and Warnings
      Wed Jun 30 2021 04:27 PM

11PM EDT 5 July Update
Elsa is back over water in the Gulf of Mexico, forecast keeps it as a Tropical storm until Landfall Wednesday morning near the west coast, close to Horseshoe beach. Parts of the coast Tampa Bay, north to the Big Bend may see 3-5 feet of storm surge in certain areas.

From the official discussion:
Some of the intensity models, such as SHIPS and some of the global models showing Elsa possibly reaching 60 kt just before landfall along the northwestern Florida peninsula. This would typically require a Hurricane Watch for a small portion of northwest Florida. However, given that Elsa has been hugging a very tight mid-level moisture gradient -- a condition that is expected to continue until landfall occurs in about 36 hours -- the new official intensity forecast remains similar to the previous advisory and holds the peak intensity at 55 kt due to expected intermittent dry-air intrusions. Subsequent NHC forecasts can assess the new reconnaissance and model data that will be coming in later tonight, and determine if an increase in the intensity forecast and the issuance of a hurricane watch or warning is required. I.e. you may wake up to a hurricane warning along parts of the west coast of Florida.

6PM EDT 3 July Update
New Tropical Storm Watches and Warnings are up tonight, including the Florida Keys, as Tropical Storm Elsa narrowly misses crossing southern Haiti and looks to be spending more time over very warm water en route to Cuba.

Depending in large part on what parts of and how brief (or long) the cyclone spends over Cuba, Elsa may be stronger (or weaker) than currently anticipated when entering the Gulf of Mexico.

At present, the low-level circulation, which has been partially to mostly exposed for nearly a day now, is tucking itself back under some convection as showers and thunderstorms are building upshear, likely getting an orographic assist with from cyclone interacting with Hispaniola.

The forecast scenario remains too complex for any one model or even suite of models, but NHC seems to have a pretty good handle on Elsa, and tropical storm/hurricane preparations are in order wherever they have watches and warnings in effect.

3PM EDT 2 July Update
Elsa has continued to organize and strengthen despite a rapid forward speed and higher net effective shear, given that rapid forward motion, and as of the 2PM AST NHC update, is now an 85MPH Cat 1 on the Saffir-Simpson scale.

With continued forward motion at nearly 30 MPH and some nearby dry air, it is unclear how long this on-and-off intensification can go on for, but suffice it to say, Hurricane Elsa's intensity is now well-above the earlier NHC forecasts, even ahead of schedule of the more bullish model runs, and so it could be best not to count on a sustained leveling off or weakening trend any time soon, and interests in the central to western Caribbean may want to begin wrapping up hurricane preparations for the likelihood of impact.

How strong Elsa is next week after land interaction in the Caribbean is also unclear, but Florida for certain should be keeping a watchful eye. Steering patterns favor at least some Florida impact, and that is the official forecast from NHC.

Full Caribbean radar loop recording is now live:
Elsa 2021 Full Caribbean Radar Loop Recording



Initial Update
Atlantic Hurricane Season 2021 has just told 2020 to hold its beer.

Advisories have begun on the potential fifth named storm of the swift start to the 2021 Atlantic Hurricane Season with Invest 97L. This incipient tropical cyclone being born unseasonably early in the Main Development Region (MDR) of the Tropical Atlantic is far more like what we would expect to see in the heart of a season, not the very first official month.

Model guidance on FIVE is warm to very warm, and getting warmer. Interests in the eastern Caribbean and points west to northwest may want to begin paying very close attention to official guidance.

We also now have a Forecast Lounge up just for FIVE to discuss its model runs in greater detail and speculate more freely
Elsa (FIVE) Forecast Lounge



Elsewhere, we are still keeping a watchful eye on Invest 95L, which is still somewhat coherent, but struggling in the higher shear/subsident zone of the eastern Caribbean. Also of some interest is the persistent weather maker along the far western Gulf of Mexico, now analyzed with a surface "Low" in the Bay of Campeche.

5:00PM AST June 30, 2021 WATCHES AND WARNINGS
--------------------
The Meteorological Service of Barbados has issued a Tropical Storm Watch for Barbados, St. Vincent, and the Grenadines.

The Meteorological Service of St. Lucia has issued a Tropical Storm Watch for St. Lucia.

The Government of France has issued a Tropical Storm Watch for Martinique.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Watch is in effect for...
* St. Vincent and the Grenadines
* St. Lucia
* Barbados
* Martinique

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours.

{{StormLinks|Elsa|05|5|2021|Elsa|Elsa}}
{{StormLinks|95L|95|6|2021|95|Invest 95L}}

{{NortheastGulfRadar}}
{{FloridaPowerOutage}}
{{SWFloridaMedia}}
{{TampaMedia}}

Edited by MikeC (Tue Jul 06 2021 12:47 PM)

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Entire topic
Subject Posted by Posted on
* Entering July with new Tropical Cyclone Watches and Warnings cieldumortModerator Wed Jun 30 2021 04:27 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings MichaelA   Mon Jul 05 2021 08:41 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings cieldumortModerator   Mon Jul 05 2021 12:46 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings OrlandoDan   Fri Jul 02 2021 07:37 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings MichaelA   Fri Jul 02 2021 05:32 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings cieldumortModerator   Fri Jul 02 2021 05:29 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings danielwAdministrator   Fri Jul 02 2021 03:16 PM
. * * Re: Entering July with new Tropical Cyclone Watches and Warnings cieldumortModerator   Fri Jul 02 2021 03:04 PM

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