Archive for January 14th, 2013
COLD, RAW, WET, ICY… Not a night for man nor beast…
ICING ISSUES: The NWS offices in Huntsville and Birmingham have expanded the “winter weather advisory” a bit… these counties are included:
Lamar, Fayette, Walker, Winston, Marion, Cullman, Franklin, Colbert, Lauderdale, Lawrence, Limestone, Morgan, and Madison.
This is where temperatures will hover around freezing through the night. Thankfully, the infrastructure is pretty warm and we don’t expect a major ice storm, but there is clearly some risk of patchy bridge icing overnight. If you have to travel in this part of Alabama, be careful on those bridges and overpasses. Black top roads will stay just wet.
Below is a shot of ice in the trees near Russellville in Franklin County before the sun set today…
FLOODING ISSUES: We received a report from Cullman County EMA indicating reports of widespread flooding of low lying roadways across Cullman County. Flooding remains a concern in the broad area from Aliceville to Guntersville, where flood watches remain in effect. Remember, turn around, don’t drown if you come across water running across a roadway.
The next forecast issue comes Thursday when a cold core upper low moves across Alabama… we will get new model data in the next few hours and we will review the snow potential. Scroll down for the afternoon discussion, or see the Weather Xtreme video for details.
…FREEZING RAIN ADVISORY FOR NORTHWESTERN PORTIONS OF CENTRAL
.FREEZING RAIN HAS ALREADY BEEN REPORTED ON TREE LIMBS AND
ELEVATED SURFACES. SOME BUILD UP IS EXPECTED BUT ACCUMULATIONS
ARE EXPECTED TO BE LESS THAN ONE QUARTER OF AN INCH.
LAMAR, FAYETTE & WALKER COUNTIES ARE NOW INCLUDED
INCLUDING THE CITIES OF…SULLIGENT…VERNON…FAYETTE…JASPER
…WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM CST TUESDAY…
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING RAIN…WHICH IS IN EFFECT UNTIL 9 AM CST
* TIMING…PATCHES OF FREEZING RAIN HAVE ALREADY BEEN REPORTED
IN THESE AREAS. THIS WILL CONTINUE UNTIL TEMPERATURES RISE
ABOVE FREEZING ON TUESDAY MORNING.
* ACCUMULATION…LESS THAN ONE QUARTER OF AN INCH. SOME SLEET MAY
ACCOMPANY THE FREEZING RAIN WILL NO ACCUMULATION OF SLEET.
A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW…SLEET…OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE
Heavy rain has been and continues to fall over the same areas this afternoon. A new flood advisory has been issued as run-off into streams and rivers are causing rapid rise of water levels in may areas. Many roadways in our northwestern counties are under water and impassible. Some of the impacted areas have received 2-3 inches of rain today and rain will continue to fall for the next 24 hours.
Some flood reports from the affected areas:
In Lamar County, numerous roads across the county are impassable due to water covering the road.
In Fayette County, Reports of water covering Smith Road neath White Hall Chapel. Water was deep enough to cover car tires.
In Walker County, Alexander Tubbs Road is reportedly under water in various places.
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
* FLOOD WARNING FOR…
FAYETTE COUNTY IN WEST CENTRAL ALABAMA…
MARION COUNTY IN NORTHWEST ALABAMA…
WALKER COUNTY IN ALABAMA…
WINSTON COUNTY IN NORTHWEST ALABAMA…
* UNTIL 1000 PM CST
* AT 420 PM CST…EMERGENCY MANAGEMENT ACROSS NORTHWEST PORTIONS OF
CENTRAL ALABAMA HAVE REPORTED SEVERAL ROADWAYS BECOMING COVERED WITH
WATER DUE TO CONTINUED MODERATE TO HEAVY RAINFALL. FLOODING WILL BE
A CONCERN THROUGH THE EVENING HOURS TONIGHT…AND ROADWAYS COULD
BECOME IMPASSIBLE IN LOW LYING AREAS IN THE WARNED AREA.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLOODING TO OCCUR.
LOCATIONS THAT WILL SEE THE BEST CHANCE OF EXPERIENCING FLOODING IN
LOW LYING AREAS WILL BE ACROSS NORTHWESTERN FAYETTE…NORTHWESTERN
WALKER…ALL OF WINSTON COUNTY…AND ALL OF MARION COUNTY.
THIS IS A DANGEROUS SITUATION. RAINFALL FROM PERSISTENT RAINFALL
WILL PRODUCE FLOODING IN LOW LYING AREAS AND ALONG STREETS. MANY
ROADS WILL BE CLOSED DUE TO HIGH WATER AND DRIVING IS NOT RECOMMENDED
DURING THE NEXT SEVERAL HOURS.
ADDITIONAL RAINFALL AMOUNTS OF UP TO ONE INCH IS POSSIBLE IN THE
WARNED THROUGH THE EVENING HOURS TONIGHT.
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ICY RAIN: All eyes are on the thermometers over Northwest Alabama… we are showing 32 degrees at mid-afternoon at Hamilton and Haleyville, where some light icing is beginning on trees and power lines. There will be some potential for a icy spots on bridges tonight mainly west of a line from Millport to Addison to Decatur to Hazel Green. Communities like Vernon, Winfield, Moulton, Russellville, Athens, and Muscle Shoals will see temperatures hovering in the 30-32 degree range. Thankfully the infrastructure is fairly warm from our recent mild spell, so major, widespread travel problems are not expected. However, there is a very real possibility of icy patches on bridges and overpasses over this part of Northwest Alabama tonight.
A winter weather advisory is in effect tonight for Marion, Winston, Lawrence, Franklin, Colbert, Lauderdale, and Limestone Counties for this potential.
No ice is expected for places like Birmingham, Tuscaloosa, Anniston or Gadsden as temperatures hold in the 40s.
TOMORROW: Still wet and cold. We might see 50 in the Birmingham metro if we are lucky… areas north of Birmingham won’t get out of the 40s, and Montgomery could touch 70. So it goes with a stalled front nearby. Your temperature will all depend on where you live. Rain is likely much of the day, although the heaviest and most widespread rain should be north of I-20. Some risk of flooding in low spots, but I doubt if we have widespread issues.
WEDNESDAY: While the clouds hang tough, any rain on Wednesday should be light and spotty. For the I-20 corridor, a decent chance we reach the low 50s; but again to the north most communities won’t get out of the 40s.
SNOW FLAKES THURSDAY: The next issue in this issue filled forecast comes Thursday, when a cold core upper low is forecast to track through the Deep South. The 12Z GFS brings the cold pool right along I-20, from Jackson to Birmingham to Atlanta. Dynamic cooling associated with the upper low will bring the chance of snow flakes mixed in with the rain. In fact, the GFS is printing 1-2 inches of snow for the I-20 corridor by Thursday night. Can it happen? Certainly. But, we have little skill in dealing with cold core upper lows, since they are the “weatherman’s woe”.
The NAM, in contrast, has the cold core upper low along I-40 in Tennessee with zero snow here.
Best course of action for now is to simply forecast rain, possibly mixed with snow Thursday. We will fine tune the forecast as the event gets closer. Also, keep mind soil temperatures aren’t too cold, and surface temperatures should remain above freezing Thursday, so even if snow flakes do fall I am not sure they can accumulate.
SUNSHINE, FINALLY: The sun finally returns Friday. In fact, we expect a decent amount of sunshine Friday, Saturday, and Sunday with seasonal temperatures. Highs in the 50s, lows in the 30s.
BRUTALLY COLD NEXT WEEK? Still too early to say just how cold, but global models suggest the coldest air so far this winter invades the continental U.S. next week. Some guidance has suggested temperatures as cold as 30 below zero over the Upper Midwest. Just something to watch… and for now the cold air looks dry with no snow issues. But, we are still a week away from this. Please take some time to watch the Weather Xtreme video for the graphics and details.
WEATHER BRAINS: Don’t forget you can listen to our weekly 90 minute netcast anytime on the web, or on iTunes. This is the show all about weather featuring many familiar voices, including our meteorologists here at ABC 33/40. We will produce this week’s show tonight at 8:30 p.m. CST… you can watch live here.
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Thanks to all the kids for their hospitality at Indian Valley Elementary School in Sylacauga today… be looking for them on the Pepsi KIDCAM today at 5:00 on ABC 33/40 News! The next Weather Xtreme video will be posted here by 7:00 a.m. tomorrow…
...FREEZING RAIN ADVISORY FOR WINSTON AND MARION COUNTIES... .FREEZING RAIN HAS ALREADY BEEN REPORTED ON TREE LIMBS AND ELEVATED SURFACES. SOME BUILD UP IS EXPECTED BUT ACCUMULATIONS ARE EXPECTED TO BE LESS THAN ONE QUARTER OF AN INCH. INCLUDING THE CITIES OF...HAMILTON...DOUBLE SPRINGS ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM CST TUESDAY... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A WINTER WEATHER ADVISORY FOR FREEZING RAIN...WHICH IS IN EFFECT UNTIL 9 AM CST TUESDAY. * TIMING...PATCHES OF FREEZING RAIN HAVE ALREADY BEEN REPORTED IN THESE AREAS. THIS WILL CONTINUE UNTIL TEMPERATURES RISE ABOVE FREEZING ON TUESDAY MORNING. * ACCUMULATION...LESS THAN ONE QUARTER OF AN INCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.
With surface temperatures at or just below freezing, some icy spots are possible over Northwest Alabama tonight, generally west of the line on the map below…
Even in that zone, roads should remain just wet…. the only issue is patchy ice on bridges. We note that Hamilton and Haleyville report 32 degrees now; Cullman and Fayette are at 35.
A cold rain continues for the rest of North Alabama tonight; no ice is expected for places like Birmingham, Tuscaloosa, Anniston, or Gadsden. A full discussion and new Weather Xtreme video will be posted shortly…