The tropics are alive and well and we now have a named tropical storm, Isaias, over the southwestern Gulf of America where water temperatures are near 30 degrees (C)...plenty capable of supporting a late season hurricane. TS Isaias is very likely to become the Atlantic Basin’s first hurricane of the season and can hit the central Gulf coast on Friday night or early Saturday...perhaps as a cat 2 hurricane. While landfall is likely to be in the region between southeast Louisiana and the western part of Florida’s Panhandle, all Gulf residents from Texas to Florida should closely monitor this system.
After landfall, the impact from Isaias is likely to continue well to the north of the northern Gulf with its rain shield possibly moving as far as the Ohio Valley, Mid-Atlantic and Northeast US by later in the weekend. Elsewhere on the tropical scene, Hurricane Rachel over the eastern Pacific is currently churning to the west-northwest; however, it will take a drastic turn to the northeast in coming days and head towards the northern Baja California region with impacts on the way for much of the western US including an added contribution to snow in the Northern Rocky Mountain States.
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Well above normal temperatures around here for the next couple of days with upper-level ridging centered over the Rocky Mountain States for a bit longer. Moisture will be limited for much of the week with only isolated showers possible; primarily, in the higher elevation locations.
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All in all, this looks like a relatively quiet and dry week for the continental US, but tropical systems may change that in a big way by this weekend or the early part of next week. There are not one, not two, but three tropical systems that will have to be closely monitored in coming days...two in the eastern Pacific and one in the Gulf. The only one of the three systems that is currently named is “Rachel” which is a minimal hurricane in the eastern Pacific that is on a seemingly harmless westerly track during the next few days. After that, however, there are signs that “Rachel” will take a drastic turn from a westerly direction to northeasterly, and this could bring its moisture field into the southwestern US and potentially, well up to the north of there.
The second tropical wave in the eastern Pacific should strengthen in the near term to become a named tropical storm and potentially, it can attain classification as a hurricane. This trailing system is likely to turn into Mexico and ultimately, its moisture field can impact the southwestern or south-central states. Meanwhile, a tropical wave now over the very warm waters of the southwestern Gulf of America can intensify into named tropical storm status and potentially into the season’s first hurricane for the Atlantic Basin as it pushes towards the northern Gulf region by the weekend…and potentially, well to the north of there.
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Moisture that has been focused on the eastern part of Colorado will shift away from the Denver metro region today and cloudy skies in the morning should give way to sunshine during the afternoon hours. The weekend is shaping up to be warm and dry with plenty of sunshine on both days.
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The overall pattern will be rather wet during the next few days with an upper-level trough situated to our west and tropical moisture (Polo) flowing ahead of it into this area. Temperatures will be on the cool side for the bulk of the week following the passage of a cold frontal system.
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It turns cooler today as an upper-level trough pushes across the area and there can be scattered afternoon and evening showers and thunderstorms. It turns warmer this weekend, and overall rain-free conditions are likely for Saturday and Sunday.
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Comfortable temperatures for the next few days in the Denver metro region with highs generally in the middle 70’s. It will be somewhat unsettled as well with a daily shot at some afternoon/evening shower and thunderstorm activity.
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Cool conditions today with afternoon highs confined to the middle 70’s, but it turns warmer for the remainder of the week with 80-degree daily highs on the table. It remains somewhat unsettled today with scattered afternoon and evening thunderstorms possible with a continuing high amount of low-level moisture.
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An unsettled weather pattern will continue into the weekend with a continuing chance of showers and thunderstorms and some of the rain can be locally heavy. The pattern turns drier for the early part of next week and we’ll be on the cool side with highs generally in the 70’s.
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A somewhat unsettled weather pattern will remain with us through the remainder of the week with a daily shot of showers and thunderstorms; primarily focused on the afternoon and evening hours. It turns cooler today with temperatures confined to the middle 70’s for afternoon highs and then the a bounce back to the middle and upper 80’s is likely for the mid-week.
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