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Friday, October 9, 2020

Weather Briefing for Friday, October 9, 2020



OUTLOOK



A weak wedge of cooler air will set up across the region today. This along with high clouds well ahead of topical cyclone Delta will support much cooler temperatures. The circulation of Delta will pass west of the mountains, but bring rain, heavy at times, to the area through the weekend. A trailing cold front will cross the area early next week, with drier high pressure following through mid week.



---BEGIN SPONSOR SEGMENT---


Macon Media is being sponsored today by a Rolling Rally for President Trump scheduled for this Saturday, October 10th. The organizers are calling Cherokee, Clay and Macon Counties to unite for a rally at the Old Walmart in Franklin, NC on Saturday at 11:00 a.m. to meet and decorate vehicles (if not already decorated).

11:45 a.m. roll out begins on time going through Franklin and traveling to Jackson County Justice Center to meet up with Jackson, Graham and Swain Counties. Arrival time there at approximately 12:30. Additional details are in the image accompanying this section.








Weather Sponsor



Adams Products, a Division of Oldcastle is underwriting the daily weather briefing & public safety updates for the month.

Open 7:30 AM to 4:00 PM, M-F, located at 895 Hickory Knoll Road, Franklin, NC. Visit our Facebook page at: https://www.facebook.com/Adams.Oldcastle.Franklin.NC/

All your masonry needs are available. Our phone number is 828.524.8545, the public is welcome, we’ll help you with your next project.


--- END SPONSOR SEGMENT---



News Brief



The United States Marine Corps Color Ceremony from the evening of October 8, 2020

Watch as the Battle Color Detachment performs at the National Museum of the Marine Corps. [LINK] https://www.usmcmuseum.com/






General forecast through Saturday night


Today

Fog in the morning. Cloudy, with highs ranging from the low-to-mid-60s in the higher elevations to near 70 in the lower elevations. Light winds out of the south.

Tonight

Showers likely, mainly after 2am. Patchy fog after 2am. Otherwise, cloudy, with lows in the 50s. Light winds out of the southeast. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Saturday

Patchy fog in the morning and rain showers throughout the day are expected. Highs mainly in the 60s. A few locations could reach 70. Winds out of the southeast 5 to 10 mph in most of the county, with higher elevations seeing winds in the 10 to 15 mph range. Chance of rain is 80%. New rainfall amounts between a half and three-quarters of an inch possible.

Saturday Night

Showers. Lows ranging from the upper 50s in the higher elevations to the low to-mid 60s in the lower elevations. Winds out of the southeast 5 to 10 mph with higher elevations seeing winds in the 10 to 15 mph range. Chance of precipitation is 80%. New precipitation amounts between a half and three-quarters of an inch possible.

Sunday

Showers, with thunderstorms also possible after 11am. Highs ranging from the mid-60s in the higher elevations to the lower 70s in the lower elevations. Winds out of the southeast 5 to 10 mph and gusts uo to 20 mph with the higher elevations seeing winds in the 10 to 15 mph range and gusts up to 25 mph. Chance of precipitation is 80%.

Sunday Night

Showers likely. Mostly cloudy, with lows ranging from the mid-50s in the higher elevations to the mid-60s in the lower elevations. Chance of precipitation is 70%.



HAZARDS


Prolonged rainfall is possible across the forecast area Saturday into Monday in association with the remnants of tropical cyclone Delta. Periods of heavier rainfall could also occur across northeast Georgia, the North Carolina Blue Ridge, and the northern Upstate possibly leading to localized flooding conditions.

Air Quality




Air quality is in the mid-upper range of green today for all elevations.

Pollen

Pollen levels are expected to be in the low-medium range (4.2 out of 12) with ragweed, chenopods, and grasses being the main culprits. Tomorrow is expected to be much lower as rain moves into the area (0.5 out of 12).


Weather Extremes for Macon County for October 9th

Highest Temperature 86°F in Highlands in 1939
Lowest Temperature 26°F in Highlands in 1978
Greatest One-Day Rain 5.10 inches in Highlands in 2017
Greatest One-Day Snowfall (no snowfall has been recorded on this date since records began in 1872 




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 Oct 9 2020

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

The National Hurricane Center is issuing advisories on Hurricane Delta, located over the west-central Gulf of Mexico.

1. A tropical wave located several hundred miles southwest of the Cabo Verde Islands continues to produce disorganized showers and a few thunderstorms. The wave is expected to move generally westward or west-northwestward at about 15 mph. Environmental conditions could be conducive for some gradual development of the system this weekend or early next week while it is located over the tropical Atlantic, well east of the Lesser Antilles. Upper-level winds are forecast to become unfavorable for further development by the middle of next week.

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





Hurricane Delta Discussion Number 19
NWS National Hurricane Center Miami FL AL262020
400 AM CDT Fri Oct 09 2020

Delta has been generally steady in strength during the past several hours as it starts to close in on the southwestern Louisiana coast. An eye has occasionally been evident in geostationary satellite images, and deep convection remains quite intense around that feature. The Air Force Hurricane Hunters recently found have been investigating Delta this morning, and recently reported maximum flight-level winds of 125 kt and peak SFMR surface winds of 99 kt. Based on a blend of this data, the initial intensity is held at 105 kt. The hurricane appears to be leveling off in strength as recent microwave passes show some asymmetry in the eyewall and vertical tilt due to southwesterly shear. The core of the hurricane passed very close to NOAA buoy 42002 a few hours ago, and the pressure at the buoy fell to 953 mb. The buoy also reported peak winds around 70 kt and a significant wave height of about 35 ft.

The major hurricane is now moving northward at 10 kt. The track forecast models remain quite consistent. Delta is forecast to continue moving northward today and then turn north-northeastward tonight between a ridge over the western Atlantic and a trough over the south-central United States. This motion is expected to take the core of the hurricane to the Louisiana coast this evening. After landfall, a turn to the northeast is forecast as a larger trough moves eastward toward Delta, and that motion should continue until the cyclone dissipates over Tennessee or Kentucky in a few days. The models remain tightly clustered, and only minor tweaks were made to the previous NHC track forecast.

Delta is expected to move over waters with progressively lower oceanic heat content as it approaches the Louisiana coast. These less favorable oceanic conditions combined with an increase in southwesterly shear should cause Delta to weaken a little before it moves onshore. Regardless, Delta is forecast to be near major hurricane intensity when it makes landfall and significant impacts are expected (see Key Messages below). After landfall, rapid weakening is anticipated and Delta is forecast to fall below hurricane strength tonight or early Saturday and dissipate in about 3 days.

Key Messages:

1. Life-threatening storm surge is expected near and east of where Delta makes landfall this evening, and a Storm Surge Warning is in effect from High Island, Texas, to Ocean Springs, Mississippi. The highest inundation of 7 to 11 feet is expected somewhere between Rockefeller Wildlife Refuge and Morgan City, Louisiana. Residents in the warning area should promptly follow advice given by local officials. The storm surge risk remains high despite the forecast decrease in intensity before landfall since Delta is a relatively large hurricane.

2. Hurricane-force winds are expected this afternoon and evening somewhere within the Hurricane Warning area between High Island, Texas, and Morgan City, Louisiana. Hurricane force winds will also spread inland across portions of southern Louisiana near the path of Deltas center this evening and tonight.

3. Heavy rainfall will lead to significant flash flooding and minor to major river flooding in parts of Louisiana today and Saturday. Additional flooding is expected across portions of the central Gulf Coast into the Lower Mississippi Valley.

FORECAST POSITIONS AND MAX WINDS

INIT 09/0900Z 26.9N 93.7W 105 KT 120 MPH
12H 09/1800Z 28.6N 93.3W 95 KT 110 MPH
24H 10/0600Z 31.1N 92.3W 60 KT 70 MPH...INLAND
36H 10/1800Z 32.9N 91.0W 30 KT 35 MPH...INLAND
48H 11/0600Z 34.2N 89.1W 25 KT 30 MPH...INLAND
60H 11/1800Z 35.6N 87.0W 20 KT 25 MPH...POST-TROP/REMNT LOW
72H 12/0600Z...DISSIPATED




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Published at 5:00am Friday, October 09, 2020


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