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Dr. Tim Coleman
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An upper-level low pressure area is centered over the Great Plains today, and will shift northeast tomorrow. This will bring moist low-level air into Alabama from the south during the day tomorrow. This, combined with cold air aloft, will cause the atmosphere to be unstable tomorrow afternoon and tomorrow evening... Continue reading
Posted 1 hour ago at WBRC First Alert Weather
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(UAH MAX mobile radar and M3V mobile weather measurements vehicle) VORTEX-SE (Southeast) is the third part of a project started years ago in the Great Plains. It stands for Verification of the Origins of Rotation in Tornadoes EXperiment, and had two big projects in the Great Plains. But, the lay... Continue reading
Posted 3 days ago at WBRC First Alert Weather
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Spring officially begins next week, but we areally getting close to the equinox, and the days have gotten a lot longer and the sun angle higher. The chart above shows the path of the sun across the sky from sunrise in the ESE to sunset in the WSW. It's almost... Continue reading
Posted 7 days ago at WBRC First Alert Weather
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Here on the anniversary of the Blizzard of 1993, it is a cold and dreary day across Alabama, with cloudy skies, rain, and temperatures at 2 pm only in the 40s. With dense cloud cover and more rain on the way later today, we will probably not get out of... Continue reading
Posted Mar 13, 2017 at WBRC First Alert Weather
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...SEVERE THUNDERSTORM WARNING JEFFERSON AND SHELBY COUNTIES... A wave has developed in the line of storms approaching central Alabama, indicating some rotation and the potential for damaging winds. This line echo wave pattern (LEWP) is just west of Bessemer and approaching downtown Birmingham, Hoover, and threatens almost all of Jefferson... Continue reading
Posted Mar 7, 2017 at WBRC First Alert Weather
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A line of intense thunderstorms extends from Cullman to Fayette to Aliceville, and it is moving east quickly. Most of these storms are generally not technically severe, but there is a Severe Thunderstorm Warning for the bow echo, or swirl in the line indicating high winds, for Pickens and Tuscaloosa... Continue reading
Posted Mar 7, 2017 at WBRC First Alert Weather
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The main line of thunderstorms is moving into BHM and TCL metro now. The NWS issued a severe thunderstorm warning for northeast Jefferson County, for the possibility of hail and damaging winds in places like Gardendale, Center Point, Pinson, and Trussville. Additional intense storms are moving through northern Tuscaloosa County,... Continue reading
Posted Mar 1, 2017 at WBRC First Alert Weather
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...TORNADO WATCH IN EFFECT UNTIL 6 PM CST... The line of thunderstorms is already moving through northern Alabama this afternoon. The air is marginally unstable, but enough to support strong updrafts, especially in the Tennessee Valley where upper-level temperatures are colder. Numerous reports of large hail, several as big as... Continue reading
Posted Mar 1, 2017 at WBRC First Alert Weather
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A strong weather system, with an upper-level trough and associated low pressure area, is moving across the U.S. tonight. Warm, moist air has moved as far north as Michigan, and tornadoes have been reported in parts of Illinois and Missouri tonight, with at least two fatalities. In addition, a 95... Continue reading
Posted Feb 28, 2017 at WBRC First Alert Weather
Birmingham reached 72 degrees at 2 pm, making it the 23rd day this meteorological winter (Dec, Jan, and Feb) that we have reached 70 or higher. That ties us for 2nd most all time. With three more by next Tuesday we will tie the record set in 1957. We will... Continue reading
Posted Feb 23, 2017 at WBRC First Alert Weather
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Overall, it has been a warm winter here in the southern U.S., and colder than normal in the northwest U.S. La Nina and other climatological factors have played a role. It is not global warming. We had one big Arctic outbreak in early January, with snow, ice, and lows in... Continue reading
Posted Feb 17, 2017 at WBRC First Alert Weather
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Severe thunderstorm watch for north Alabama for this evening. Thunderstorms are starting to develop along the cold front approaching Alabama from the north. With sunshine today, temperatures have gotten up into the lower 70s, and they will hold in the 60s this evening. The air is not extremely unstable, but... Continue reading
Posted Feb 8, 2017 at WBRC First Alert Weather
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Heavy rain and thunderstorms have moved across Alabama through the day. The Birmingham airport has received 0.94" of rain as of 4 pm, and most places have received 1" or more. There has been a lot of lightning and thunder too. Here is the lightning map across the US right... Continue reading
Posted Feb 7, 2017 at WBRC First Alert Weather
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The Storm Prediction Center has placed most of Alabama in a "slight" risk for severe weather tomorrow and tomorrow night. An upper-level trough will move through Alabama tomorrow, and a cold front is approaching from the north. Right now, it looks like the air will be too stable over Alabama... Continue reading
Posted Feb 6, 2017 at WBRC First Alert Weather
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It has been a strange winter so far, a lot of it due to La Nina. This blog will discuss the mechanics of La Nina, how it has impacted our weather in Alabama, and what we expect for the rest of Winter. 1. Drought After a terrible, sudden onset drought... Continue reading
Posted Jan 26, 2017 at WBRC First Alert Weather
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So far this winter, we have mainly had warm weather, occasionally interrupted by Arctic cold! Temperatures will be way above normal across much of North America, including the central and eastern U.S., over the next week. However, the weather pattern will be changing somewhat by the end of the week,... Continue reading
Posted Jan 17, 2017 at WBRC First Alert Weather
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...MULTIPLE ICY ROADS AND CAR CRASHES IN TUSCALOOSA AND BIRMINGHAM... Heavy sleet, freezing rain, and snow is now occurring again across central Alabama, as upper-level dynamics are moving in. Here in Trussville, the sleet has been pretty loud at times, and yet we also have a glaze of ice on... Continue reading
Posted Jan 6, 2017 at WBRC First Alert Weather
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So, it is happening. Freezing rain and sleet has spread across much of north and central Alabama over the past two hours. There have been a few reports of car wrecks on bridges, mainly in west Alabama. With rain and a temperature near 30, some of the bridges around Birmingham... Continue reading
Posted Jan 6, 2017 at WBRC First Alert Weather
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The National Weather Service has placed much of AL under a Winter Weather Advisory today and tonight, and expanded the Winter Storm Warning to include the Birmingham, Tuscaloosa, and Anniston areas. Temperatures are now below freezing as far south as Bessemer, with 30 degrees at the BHM airport. Temperatures will... Continue reading
Posted Jan 6, 2017 at WBRC First Alert Weather
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Radars are picking up very light returns over Alabama tonight, mainly close to the radars themselves because the precipitation is very shallow. North of I-20, this precipitation is falling as snow flurries or light sleet. I just walked outside here in Trussville and saw a few small pieces of ice,... Continue reading
Posted Jan 5, 2017 at WBRC First Alert Weather
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The National Weather Service has issued a Winter Weather Advisory for tomorrow and tomorrow night for much of Alabama, and a Winter Storm Warning for areas just south and east of BHM, including Columbiana, Talladega, Pell City, and Anniston. We are less than 24 hours away from the potential winter... Continue reading
Posted Jan 5, 2017 at WBRC First Alert Weather
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The National Weather Service has issued a Winter Storm Watch for central Alabama that goes into effect Friday morning. The computer models have come into a little better agreement today on how the potential snow may set up over Alabama Friday and Friday night. However, it is only a LITTLE... Continue reading
Posted Jan 4, 2017 at WBRC First Alert Weather
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Everyone is talking about the potential for snow this Friday or Saturday. It is an uncertain forecast. So here is a preliminary analysis, with everything subject to change as we get better data! An upper-level storm system is currently located near the coast of northern California and Oregon. That upper-level... Continue reading
Posted Jan 3, 2017 at WBRC First Alert Weather
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A massive area of rain and thunderstorms is moving through Alabama. So far, BHM has received 1.57" of rain and it still raining. This system will really help with the lingering drought conditions. We have had reports of flooding, so if you are out driving this evening, watch out for... Continue reading
Posted Jan 2, 2017 at WBRC First Alert Weather
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The Storm Prediction Center still has most of Alabama in either a slight (north) or enhanced (south) risk of severe weather for today and tonight. A tornado watch is also in effect for southwest Alabama, and that watch likely moves east to include Dothan and Montgomery soon. We have already... Continue reading
Posted Jan 2, 2017 at WBRC First Alert Weather