Daily Weather Briefing for Sunday, March 26, 2017

NATIONAL OVERVIEW

...There is a slight risk of severe thunderstorms over portions of the Southern Plains...

...Heavy rain possible over parts of the Tennessee Valley...

...Rain/freezing rain possible over parts of the Upper Great Lakes and the Northeast...

An upper-level low over Middle Mississippi Valley/Western Ohio Valley will slowly weaken while moving northeastward to Maine by Monday evening. Showers and thunderstorms will develop along the Central Gulf Coast on Sunday morning that will expand northward into parts of the Ohio Valley by Sunday afternoon into Sunday evening. Showers and thunderstorms will be restricted to the Southern Appalachians by Monday morning, expanding into parts of the Central/Southern Appalachians by Monday evening. Rain will also develop over parts of the Upper/Middle Mississippi Valley and the Great Lakes/Ohio Valley as well as parts of the Northern Mid-Atlantic on Sunday morning that will move into parts of the Northeast by Sunday evening into Monday morning. The rain will wane over parts of the Western Ohio Valley/Upper Mississippi Valley overnight Sunday. In addition, rain/freezing rain will develop over parts of the Upper Great Lakes on Sunday morning and over parts of the Northeast on Sunday night into Monday morning. Snow will also develop over parts of Maine overnight Sunday into Monday and Monday evening.

Meanwhile, energy over the Southern/Central Rockies and High Plains will move northeastward to the Ohio Valley by Monday evening. The system will produce rain and higher elevation snow over parts of the Central Rockies on Sunday ending overnight Sunday. On Sunday afternoon into evening, showers and thunderstorms will develop over parts of the Central/Southern Plains that will move into parts of the Middle/Lower Mississippi Valley by Monday morning. The showers and thunderstorms will move into parts of the Ohio Valley/Tennessee Valley and parts of the Southeast by Monday evening.


Over the West Coast, a front will move onshore by Sunday evening continuing to move eastward to the Rockies by Monday evening. The storm will begin to produce rain and higher elevation snow over parts of the Pacific Northwest/Northern California that will expand inland to parts of the Northern Rockies by Sunday evening. The rain and higher elevation snow will move into parts of the Great Basin on Monday and into parts of the Central Rockies/Southwest on Monday afternoon into Monday evening. Behind the system, onshore flow will aid in producing coastal rain and higher elevation snow over parts of the Pacific Northwest/Northern California on Monday into Monday evening.

LOCAL OUTLOOK

Low pressure lifting from the Midwest to the Great Lakes will push a band of moisture into the region today. Deeper moisture and persistent southwesterly flow will then linger over our area through Tuesday, with several rounds of showers and thunderstorms possible. Drier air should briefly return by the middle of the week as a cold front settles south of the region. Another plains low pressure system will bring moisture back to the southeast Thursday through Friday as weak cold air damming develops east of the mountains.

Weather Almanac for March 26th (1872-2016)

Record weather events for this date in Macon County

Highest Temperature 85°F at the Coweeta Experimental Station in 2007
Lowest Temperature 9°F in Highlands in 1894
Greatest Rainfall 3.20 inches in Nantahala in 1965
Greatest Snowfall 7.0 inches in Nantahala in 1971

THREE DAY OUTLOOK




TODAY

Patchy fog early. Mostly cloudy with highs near the mid to upper 60s and winds out of the south around 5 to 10 mph. Rainfall off and on during the day with rainfall amounts between a tenth and a quarter of an inch expected. Locations that are hit by thunderstorms, which are likely between 3 pm and 10 pm, will see more.


TONIGHT

Mostly cloudy with patchy fog expected overnight and lows near 50. Winds out of the southeast calming before midnight. Rainfall amounts of less than a tenth of an inch is expected, with more in locations that see thunderstorm activity, which is expected to die down before midnight.



MONDAY

Mostly cloudy with highs in the lower 70s. Winds are expected to be calm in the morning, and out of the southwest between 5 and 10 mph in the afternoon. 40% chance of rain with rainfall amounts of less than a tenth of an inch, except in locations that are impacted by thunderstorms.

MONDAY NIGHT

Mostly cloudy with lows near the lower 50s and light winds out of the southwest. 50% chance of rain and thunderstorms.



TUESDAY

Partly sunny with highs near the lower 70s. 40% chance of rain and thunderstorms.

TUESDAY NIGHT

Partly cloudy with lows near 50.


HAZARDS

Thunderstorms are expected to form across the region today. The main concern is the usual lightning, gusty winds and brief downpours. The National Weather Service has issued a Hazardous Weather Outlook for today and the full text is posted below:

Scattered thunderstorms will develop across the region today, mainly during the afternoon and early evening hours. Expect occasional cloud-to-ground lightning strikes, briefly gusty winds, and locally heavy rainfall with any thunderstorms.

As always, you can check to see what advisories, watches and warnings are in effect for Macon County by visiting http://is.gd/MACONWARN


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Donald McDonald will be the main speaker.
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Published at 5:20 am on March 26, 2017

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