NATIONAL OVERVIEW
...Heavy snow possible over the Cascades, Sierras, and the Intermountain West...
...Well above normal temperatures for the Central and Northern Plains...
...Heavy rains expected to wane across Southeastern Texas today...
A cold front that moved across the Pacific Northwest and portions of the Intermountain West yesterday will progress southeast across southern California and toward the Rockies today. Continued onshore flow behind the front will lead to a prolonged period of moderate to heavy snow, especially in the higher elevations. Rain and thunderstorms can also be expected along much of the Pacific Coast, aided by yet another area of low pressure grazing the Pacific Northwest throughout the day. Winter Storm Warnings are currently in effect for much of northern California and the Sierra Nevada Mountain range through Monday, where accumulations of 3 to 4 feet are possible above 5,000 feet. Winter Weather Advisories are also in effect for portions of the Intermountain West and Pacific Northwest for continued heavy snow today.
While the cold front is pushing across the Intermountain West, west to southwesterly flow sweeping off the Continental Divide will lead to a continued warming and drying trend across much of the Central and Northern Plains. Temperatures will soar to as much as 20 to 30 degrees above normal once more today, continuing the springlike thermal seesaw. Meanwhile, strong high pressure will protect the eastern U.S. in the form of a cold air wedge east of the Appalachians. This will lead to below normal temperatures into Monday for this area, before warmer air slowly erodes the wedge.
On the southwestern edge of this high pressure, strong return flow is present, resulting in a deep layer of warm and moist air across southern Texas and the Lower Mississippi Valley. A disturbance aloft is interacting with this moist and unstable airmass, sparking showers and thunderstorms across southern and eastern Texas. These will spread eastward into the Lower Mississippi Valley today, and then northward up the Mississippi Valley and into the Upper Great Lakes during the day Monday. Heavy rain will continue to be a concern along the Gulf Of Mexico in Texas through this morning, waning by the afternoon.
Looking ahead to Monday and Tuesday...a merger of two low pressure systems will take place across the Northern Plains on Monday. The new system will gain strength quickly as it pushes across the Upper Mississippi Valley and into Canada Monday night into Tuesday. From this system will extend a strong cold front, expected to sweep across the Mississippi River Valley and Southern Plains Tuesday. A deep pull of Gulf moisture will take place ahead of this system (an extension of the warm surge already taking place across Texas and the Lower Mississippi Valley today), leading to widespread showers and thunderstorms across much of the Eastern U.S. Monday night through Tuesday.
LOCAL OUTLOOK
Cool and dry high pressure will remain over the area for the remainder of the weekend before a warming trend begins ahead of an advancing cold front early next week. The front will bring rain chances back into the forecast area on Tuesday and early Wednesday...with dry high pressure quickly building in through the remainder of the work week. Rain chances may return again next weekend.
DAY SPONSOR
Carrion Tree Service is underwriting the daily weather briefing and public safety updates for today. they are a fully licensed and insured tree service, specializing in dangerous tree removal, view clearing, pruning, and crane services with a 24 Hour emergency response.
Their phone number is 371-4718. They are located at 120 Depot Street.
They can handle all your tree removal needs in good or bad weather.
THREE DAY OUTLOOK
TODAY (unattended outdoor burning not recommended)
Increasing clouds with temperatures starting out near the mid 20s and reaching near 60 by 3 pm and dipping to near 50 by 6 pm. Winds will be calm in the morning, rising to 5 to 10 mph from the south in the afternoon. Relative humidity levels will dip below 30% this afternoon, allowing burnable material to rapidly dry out, so outdoor burning is not recommended today.
TONIGHT
Mostly clear with temperatures dropping from near 50 at 6 pm to the upper 30s by 6 am. Winds will be mostly calm overnight.
MONDAY
Mostly cloudy with highs near the upper 50s. Calm winds early, then rising to come from the south at 5 to 10 mph before noon. Relative humidity values are not expected to drop below 50%. 20% chance of very light rain, mainly after noon. Rainfall amounts less than a tenth of an inch expected.
MONDAY NIGHT
Increasing clouds, becoming mostly cloudy before midnight. Lows in the upper 30s and winds out of the south calming before midnight. 40% chance of rain with rainfall amounts of less than a tenth of an inch expected.
TUESDAY
Cloudy with highs near 60. 70% chance of rain, mainly after noon.
TUESDAY NIGHT
Mostly cloudy with lows near 40. 70% chance of rain, mainly before 4 am.
HAZARDS
Hazardous weather is not expected today. Conditions are dry enough, combined with relatively low humidity values and windy conditions to make outdoor burning a risky proposition. Macon Media recommends putting off outdoor burning until after a soaking rain.
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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Published at 4:20 am on March 05, 2017
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