Tag: "winter storm"
**Brian Peters will be along with the regular morning discussion and Weather Xtreme video shortly**
ENJOY TODAY: We expect a sunny sky today with a high around 60 degrees… but much colder air blows in here tomorrow, and things go downhill quickly after midnight Sunday night.
WINTER STORM WATCH: NWS offices in Huntsville and Birmingham have issued a winter storm watch for late Sunday night (after midnight) and Monday… this discussion will mainly involve “round one” of this winter storm which comes Monday.
TIMING: Wintry precipitation will begin over far Northwest Alabama around midnight tomorrow night; it will expand and cover much of North and Central Alabama by 3-5 a.m. Temperatures should creep above freezing at some point Monday afternoon with slow improvement, but expect very hazardous travel conditions between midnight tomorrow night and 3:00 p.m. Monday. However, icy travel could linger into Monday night for far North Alabama, mainly north of the Tennessee River.
ACCUMULATION POTENTIAL: We project 2-4 inches of snow for that part of Alabama north of a line from Vernon to Jasper to Oneonta to Gadsden. To the south, it will be mostly freezing rain and sleet, where ice accumulations to 0.3″ are possible. Remember, this is just a guideline; the precipitation type won’t change exactly along these lines.
Some icy spots are possible as far south as U.S. 80 (Demopolis to Selma to Montgomery to Opelika), but it will be mostly rain for those communities, and points south.
IMPACT: Travel will be severely impacted, with bridges becoming ice covered quickly. With temperatures in the 20s early Monday morning, even black top roads can become ice covered and very dangerous. While major, widespread power outages are not expected for now, where ice does accumulate to 0.3″, some power outages are possible. Preparing for power outages is never a bad idea, in case a worst case scenario develops.
ALABAMA POWER IS READY, ARE YOU? Our friends at Alabama Power are monitoring the forecast closely, ready to deploy people and assets to quickly address any outages that might occur. Read a special message from Ike Piggot about their commitment to their customers.
WIND CHILL ADVISORY: We should also mention the NWS Huntsville has issued a wind chill advisory for tomorrow; wind chill values could drop below zero at times as the cold air rushes in.
CONFIDENCE: Our forecast confidence is relatively high for the events expected Monday.
IMPORTANT: Please read this post about winter weather forecasting. As you know, we have a limited skill set in dealing with winter storms in Alabama, and forecast changes are very possible as we get closer to the event. Be sure and check the blog often this weekend.
ROUND TWO: For now we expect just a cold rain Monday night, but there is a decent chance the rain changes to snow on Tuesday before it all ends.
This looks like a rather quick hitting event, but it could produce snow amounts of 1-2 inches during the day Tuesday, with accumulation possible as far south as a line from Eutaw to Centreville to Calera to Sylacauga to Roanoke. Confidence is lower in this forecast, and the exact impact remains uncertain. However, there is real chance it could impact travel Tuesday afternoon, Tuesday night, and possibly Wednesday morning across North and Central Alabama. We will be much more specific about this threat tomorrow.
Wednesday looks cold and dry.
Stay tuned for frequent updates throughout the weekend.
Looks I have over 4,000 pictures within the past 24 hours… here are some special ones I have selected tonight here in the old, lonely weather office…
Snow is getting heavier… this shot below is from the Wellborn area (just west of Anniston)
This image below is from the Bagley community of north Jefferson County
And this image below is from Ross Bridge in Hoover…
Multiple wrecks across the western third of the state, including Tuscaloosa. This shot is from Skip Baumhower, just south of Tuscaloosa on I-59/20. This wreck just happened…
Below is a shot captured of the Hugh Thomas Bridge between Tuscaloosa and Northport with our SKYCAM.
Road conditions will deteriorate across the rest of the state in coming hours. Many reports of snow in Shelby County now, south of Birmingham.
See our live radar composite of the winter storm:
Most of what you see over Alabama is NOT reaching the ground; it is evaporating into the cold, dry air near the surface.
A few mid-morning notes…
*Generally speaking, the storm is developing as expected. There has been severe weather along the Texas Coast this morning, and dynamic forcing is excellent.
*SPC believes we will have thunder with the snow and ice tonight, especially south of I-20. But, I would image there could be some reports of thundersnow north of I-20 late tonight as well, but it will be isolated.
*The new 12Z NAM is printing 0.58″ liquid with this event for Birmingham. Equates to heavy snow for North Alabama, and potentially a crippling ice event for some parts of Central Alabama tonight.
*This is NOT in the same league as the 1993 blizzard. But, I do believe we will see isolated 8 inch snow amounts over North Alabama, and the ice over Central Alabama was not a part of the 1993 storm; that one was all snow.
*NWS Jackson reports a pretty good coating of sleet and glaze on elevated objects at the Jackson, MS airport.
Our projected forecast below is not, more than likely, going to change before the event begins. Remember, travel will become difficult, if not impossible, tonight across much of Alabama north of U.S. 84. The most significant precipitation will come after 6:00, with snow and freezing rain heavy at times after midnight. Stay tuned for updates throughout the day….
Here is an early morning look at the winter storm headed for Alabama; Brian will be along shortly with a fresh Weather Xtreme video….
See the forecast accumulation graphics from me, and the Birmingham NWS below…
Not much difference in the snow projection… the NWS is using 3-6″ for Birmingham, Tuscaloosa, Anniston, and points north, while I am using 3-7″. The NWS Huntsville is using 4-7″ for their counties in North Alabama. I still strongly believe there will be some 8″ amounts in spots across high terrain of East and Northeast Alabama.
There will be a sharp cut-off of snow amounts south of I-20, where freezing rain will be more of a problem. Ice accumulation of 1/4 to 1/2 inch is very possible across this part of Central Alabama, and is very problematic. One-half inch of ice might sound like much, but it is enough to bring down trees and power lines, and make for widespread power outages that can last for more than 24 hours in places.
NOTE: There is little skill in determining the exact line between significant snow, and significant ice. This is the greatest challenge in this forecast. For now, the line most likely will be running a little south of Tuscaloosa, Birmingham, and Anniston, but nobody knows the exact placement at this point. Below that line is where a major ice event is likely and power outages will be an issue. Keep a close eye on updates today for adjustments to that potential snow/ice line.
The NWS has issued a winter storm warning for mostly snow for these counties: Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah, Fayette, Jefferson, Lamar, Marion, Pickens, Randolph, Shelby, St. Clair, Talladega, Tuscaloosa, Walker, Winston, Franklin, Lincoln, Moore [TN] and Colbert, Cullman, De Kalb, Franklin, Jackson, Lauderdale, Lawrence, Limestone, Madison, Marshall, and Morgan.
The NWS has issued an ice storm warning for mostly freezing rain for these counties: Autauga, Barbour, Bibb, Bullock, Chambers, Chilton, Coosa, Dallas, Elmore, Greene, Hale, Lee, Lowndes, Macon, Marengo, Montgomery, Perry, Pike, Russell, Sumter, Tallapoosa.
WHEN? Precipitation is now falling over South Mississippi and extreme Southwest Alabama. More than likely, some of this is not reaching the ground, but the lower levels will saturate soon and all of this will be moving northeast. While we could see some freezing rain or snow this afternoon, the bulk of the precipitation will come from 6:00 tonight through 8:00 a.m. tomorrow. Snow and freezing rain could be heavy at times after midnight.
TRAVEL: Travel will become difficult, if not impossible, tonight and tomorrow morning due to snow and ice. Expect airport delays, and it is possible some airports will have to close for a while. In addition to Birmingham-Shuttlesworth International Airport, this storm will also impact airports at Atlanta, Nashville, and Memphis.
POWER: In the ice storm warning zone, there could be power outages due to the weight of the ice on trees and power lines. A few scattered power outages are possible over North Alabama as well due to the snow, but it should not be a widespread problem there. Review the ice storm warning counties above to see the places in greatest danger of power outages.
DON’T FORGET: With every winter weather event in Alabama…
*Some will be delighted with the amount of snow they get, others will be severely disappointed
*There will be surprises as the event unfolds.
Again… Brian will be along shortly with the morning weather xtreme video, and we will have running updates throughout the day.