SUMMARY: Winter Weather Advisories are in effect for portions of north Alabama, and a Winter Storm Warning is in effect for northeast Alabama. Counties in the Advisory area are forecast to receive less than an inch of snow while Counties in the Winter Storm Warning may see up to 2″.

TIMING: Sunday morning through Sunday evening.

AREAS AFFECTED: All of north and central Alabama

POTENTIAL HAZARDS: Roads packed with snowfall may become slushy and slippery. Windy conditions may quickly develop even outside of any rain or snowfall. Snowfall falling onto trees and power lines may result in power outages. Higher wind gusts of 30-50 MPH and rainfall up to 4″ are possible in the higher terrains.

RECOMMENDED ACTIONS: Plan on slippery road conditions and sudden wind gusts if traveling – especially in higher profile vehicles. Allow extra time to reach your destination. Do not buy all of the milk and break off the shelves in retail stores as this will only harm the already fragile supply chain. In the event of a power outage, ensure you have food, water, and a flashlight.

TEAM DISCUSSION: Winter storm will impact all areas starting Sunday morning. Temperatures through the entire system will remain above freezing so still am not anticipating any widespread travel issues, however, a few slick spots are certainly possible. The biggest concern for black ice will be overnight Sunday into Monday, but even then we’re forecasted to get above freezing by the lunch hour.

Gusty winds have already started to develop per recent observations and expect this trend to continue. The higher terrains will experience not only higher wind gusts but more snowfall potential.

NWS GRAPHICS/DETAILS

NWS Huntsville

NWS Birmingham

SUMMARY: Wind Advisory for wind gusts from 15-25 MPH.

TIMING: From 9:00 PM Friday until Noon Saturday.

AREAS AFFECTED: This particular Advisory is for North Alabama, Coverage Zone 1 and 3.

POTENTIAL HAZARDS: Wind of this magnitude could knock down trees and power lines resulting in isolated power outages. Outdoor objects, furniture, trash cans, and holiday decorations may be damaged.

ACTIONS ADVISED: Secure all loose objects and prepare for power outages.

NWS GRAPHICS/DETAILS

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
1124 AM CST Fri Dec 10 2021

ALZ001>010-016-TNZ076-096-097-110615-
/O.NEW.KHUN.WI.Y.0005.211211T0300Z-211211T1800Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield,
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens,
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab,
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg,
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs,
and Cowan
1124 AM CST Fri Dec 10 2021

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON CST
SATURDAY...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph
  expected.

* WHERE...Portions of north central, northeast and northwest
  Alabama and southern middle Tennessee.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects,
  including holiday decorations. Tree limbs could be blown down
  and a few power outages may result.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

SUMMARY: Wind Advisory for wind gusts from 15-25 MPH.

TIMING: From 9:00 PM Friday until Noon Saturday.

AREAS AFFECTED: This particular Advisory is for North Alabama, Coverage Zone 1 and 3.

POTENTIAL HAZARDS: Wind of this magnitude could knock down trees and power lines resulting in isolated power outages. Outdoor objects, furniture, trash cans, and holiday decorations may be damaged.

ACTIONS ADVISED: Secure all loose objects and prepare for power outages.

NWS GRAPHICS/DETAILS

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
1124 AM CST Fri Dec 10 2021

ALZ001>010-016-TNZ076-096-097-110615-
/O.NEW.KHUN.WI.Y.0005.211211T0300Z-211211T1800Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield,
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens,
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab,
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg,
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs,
and Cowan
1124 AM CST Fri Dec 10 2021

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON CST
SATURDAY...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph
  expected.

* WHERE...Portions of north central, northeast and northwest
  Alabama and southern middle Tennessee.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects,
  including holiday decorations. Tree limbs could be blown down
  and a few power outages may result.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Huntsville AL
233 PM CST Fri Jan 14 2022

ALZ009-010-151100-
/O.EXB.KHUN.WS.A.0001.220116T1200Z-220117T0000Z/
Jackson-DeKalb-
Including the cities of Scottsboro, Fort Payne, and Rainsville
233 PM CST Fri Jan 14 2022

...WINTER STORM WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY AFTERNOON...

* WHAT...Heavy wet snow possible. Total snow accumulations of 1 to
  3 inches possible. Winds could gust as high as 35 mph.

* WHERE...Jackson and DeKalb counties.

* WHEN...From Sunday morning through Sunday afternoon.

* IMPACTS...Travel could be very difficult to impossible, and
  due to the presence of cold temperatures, hazardous travel
  conditions could persist into Monday.

* ADDITIONAL DETAILS...Locally heavier snowfall amounts may
  occur in snow bands that develop across the region. So, keep
  abreast of the latest forecast information as expected
  snowfall totals are likely to change.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

A risk of severe weather still exists today, mainly this afternoon and evening, however, some uncertainty has begun to take place over the past several hours, and quite honestly – we’re not gonna know what happens until the day starts progressing, making this a conditional severe weather threat.

The Storm Prediction Center’s Outlook puts a large portion of our Zones in the Enhanced (Level 3/5) risk. The atmosphere is absolutely primed for supercell development, including rotating supercells. The limiting factor that is in place is a CAP that will prevent storms from reaching that point. Basically, it’s like if you shake a soda can without opening the lid. Once that lid pops after you shake it, it goes out of control, but keep the lid on and the soda behaves.

SUMMARY: Wind Advisory for wind gusts from 15-25 MPH.

TIMING: From 9:00 PM Friday until Noon Saturday.

AREAS AFFECTED: This particular Advisory is for North Alabama, Coverage Zone 1 and 3.

POTENTIAL HAZARDS: Wind of this magnitude could knock down trees and power lines resulting in isolated power outages. Outdoor objects, furniture, trash cans, and holiday decorations may be damaged.

ACTIONS ADVISED: Secure all loose objects and prepare for power outages.

NWS GRAPHICS/DETAILS

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
1124 AM CST Fri Dec 10 2021

ALZ001>010-016-TNZ076-096-097-110615-
/O.NEW.KHUN.WI.Y.0005.211211T0300Z-211211T1800Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield,
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens,
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab,
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg,
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs,
and Cowan
1124 AM CST Fri Dec 10 2021

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON CST
SATURDAY...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph
  expected.

* WHERE...Portions of north central, northeast and northwest
  Alabama and southern middle Tennessee.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects,
  including holiday decorations. Tree limbs could be blown down
  and a few power outages may result.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

SUMMARY: Wind Advisory for wind gusts from 15-25 MPH.

TIMING: From 9:00 PM Friday until Noon Saturday.

AREAS AFFECTED: This particular Advisory is for North Alabama, Coverage Zone 1 and 3.

POTENTIAL HAZARDS: Wind of this magnitude could knock down trees and power lines resulting in isolated power outages. Outdoor objects, furniture, trash cans, and holiday decorations may be damaged.

ACTIONS ADVISED: Secure all loose objects and prepare for power outages.

NWS GRAPHICS/DETAILS

URGENT - WEATHER MESSAGE
National Weather Service Huntsville AL
1124 AM CST Fri Dec 10 2021

ALZ001>010-016-TNZ076-096-097-110615-
/O.NEW.KHUN.WI.Y.0005.211211T0300Z-211211T1800Z/
Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan-
Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN-
Including the cities of Florence, Muscle Shoals, Sheffield,
Tuscumbia, Russellville, Red Bay, Moulton, Town Creek, Athens,
Huntsville, Decatur, Albertville, Boaz, Guntersville, Arab,
Scottsboro, Fort Payne, Rainsville, Cullman, Lynchburg,
Fayetteville, Winchester, Sewanee, Decherd, Estill Springs,
and Cowan
1124 AM CST Fri Dec 10 2021

...WIND ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO NOON CST
SATURDAY...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph
  expected.

* WHERE...Portions of north central, northeast and northwest
  Alabama and southern middle Tennessee.

* WHEN...From 9 PM this evening to noon CST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects,
  including holiday decorations. Tree limbs could be blown down
  and a few power outages may result.

*PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

SUMMARY: Isolated thunderstorms are expected Friday night into Saturday morning, before a line of strong to severe thunderstorms accompanies a cold front Saturday morning. Additionally, expect windy condition as the front nears the region.

TIMING: Windy conditions throughout the day on Friday, thunderstorms Saturday morning

AREAS: All of Coverage Zone 1, 2, and 3.

POTENTIAL HAZARDS: Winds outside of thunderstorms will be in the 10-20 MPH range beginning Friday. Damaging winds in excess of 60 MPH, and tornadoes.

ACTIONS ADVISED: Prepare now for gusty winds by securing all loose outdoor items, including holiday decorations to prevent loss or damage. Prepare for any Watches and Warnings issued by the National Weather Service. Know your severe weather plan in case Warnings are issued. Prepare for power outages. Ensure electronic devices have a proper charge in the event of a power outage.

DISCUSSION:

HI-RES model data is showing isolated thunderstorm development before a vigorous line of thunderstorms approaches Saturday morning. Sufficient SHEAR/moderate CAPE will be in place for thunderstorms ahead of the front to be severe. Even though this is looking to be a face-paced squall line, NWS does have portions of the area in a Marginal Risk for Excessive Rainfall.

Graphics below: