Weather Briefing for Friday, September 18, 2020

OUTLOOK

Heavy rainfall and isolated thunderstorms associated with Tropical Depression Sally will impact much of the area today with showers and storms tapering off by early Friday morning. Thereafter, dry and cool high pressure will dominate the weather through the middle of next week.


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News Brief

COVID-19 pdate for Wednesday, September 16, 2020 [LINK]

General forecast through Saturday night


Today

Partly sunny, with highs ranging from the upper 60s in the higher elevations to the mid-70s in the lower elevations. Calm winds early increasing to come out of the northwest 5 to 10 mph by midmorning.

Tonight

Mostly cloudy, with lows ranging from the upper 40s in the higher elevations to the mid-50sin the lower elevations. WInds out of the northwest around 5 mph becoming calm before midnight.

Saturday

Mostly cloudy, with highs ranging from the lower 60s in the higher elevations to the lower 70s in the lower elevations. Light winds out of the southeast.

Saturday Night

Mostly cloudy, with lows ranging from the upper 30s in the higher elevations to the upper 40s in the lower elevations. Calm winds.

Sunday

Sunny, with highs ranging from near 60 in the higher elevations to near 70 in the lower elevations.

Sunday Night

Mostly clear, with low ranging from the upper 30s in the higher elevations to the low-to-mid 40s in the lower elevations.



HAZARDS

Hazardous weather is not expected at this time.

Air Quality

Air quality is in the upper range of green today as ozone and particulate matter levels are exptected to not be a problem today.

Pollen

Pollen levels are expected to be medium today (6.4 out of 12) with ragwee,, chenopods, and grasses being the main culprits. Tomorrow is expected to higher (7.0 out of 12).



TROPICAL WEATHER
(The North Atlantic Hurricane Season runs from June 1st to Nov 30th)



Tropical Tidbit from Levi Cowan (video recoded yesterday afternoon)

Tropical Weather Outlook
NWS National Hurricane Center Miami FL
200 AM EDT Fri Sep 18 2020

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

The National Hurricane Center is issuing advisories on Hurricane Teddy, located over the central tropical Atlantic, and on Tropical Depression Twenty-Two, located over the southwestern Gulf of Mexico.

1. Showers and thunderstorms associated with an area of low pressure located a few hundred miles southwest of the Cabo Verde Islands have increased during the past several hours. Earlier satellite-derived wind data indicated that this system does not yet have a well-defined center, but it is producing winds near tropical-storm-force to its east. Environmental conditions are expected to be conducive for additional development during the next day or two and a tropical depression or tropical storm could form before the end of the week. This system is forecast move west-northwestward at 10 to 15 mph through the weekend.

* Formation chance through 48 hours...medium...60 percent.
* Formation chance through 5 days...medium...60 percent.

2. A small low pressure system is embedded within a larger non-tropical low. Although showers and thunderstorms associated with the smaller low are showing signs of organization, the system will soon move inland over Portugal and further tropical or subtropical development is unlikely. The low is producing gale-force winds, and will likely bring gusty winds and brief periods of heavy rain to portions of western Portugal today and tonight. For more information about potential hazards in Portugal, please see products issued by the Portuguese Institute for the Sea and the Atmosphere (IPMA). For more information about marine hazards associated with this system, see High Seas Forecasts issued by Meteo France.

* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...20 percent.

3. Post-tropical cyclone Paulette is located several hundred miles north-northwest of the Azores. The cyclone is forecast to move quickly southward for the next several days and then stall over marginally warm waters a few hundred miles south or south-southwest of the Azores by the end of the weekend. The cyclone could subsequently redevelop tropical characteristics late this weekend or early next week while it moves little.

* Formation chance through 48 hours...low...10 percent.
* Formation chance through 5 days...low...20 percent.

4. Another tropical wave is forecast to move off the west coast of Africa by early Saturday. Some gradual development of the system will be possible thereafter while it moves generally west-northwestward over the far eastern Atlantic.

* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.






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Published at 7:00am Thursday, September 17, 2020