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Spectacular Spring Day

ABC 33/40 Weather Blog - 1 hour 44 min ago

TONS O’ SUN: A cool, dry continental airmass is over Alabama this morning; we are starting the day with most communities down in the cool 40s; we rise into the low 70s this afternoon with a sunny sky and low humidity.

Sure looks like we stay generally dry tomorrow; we might consider a small risk of a shower late in the day, but the latest guidance holds off the showers until tomorrow night. Tomorrow will be warmer with a high between 77 and 80 degrees.

We note that severe storms will likely erupt tomorrow well to the west of Alabama, with an “enhanced” severe weather risk over North Texas and South Oklahoma.

THURSDAY/FRIDAY: Moist air returns to Alabama, and there will some risk of showers and a few thunderstorms both days. For Thursday, models show the best chance of showers during the morning hours, with a generally rain-free afternoon. Then, on Friday, the best chance of showers and storms should come during the afternoon and nighttime hours as an upper trough approaches from the west. Highs will be generally in the low 70s on these two days.

SATURDAY: Still no really good agreement on details between the American (GFS) model and the European (ECMWF) model. The GFS suggests a weakening surface low will move along I-40, and will being a continued chance of showers and storms, mainly during the morning hours. Wind fields are relatively weak, and marginal instability values, so the overall severe weather threat looks rather low.

The Euro is a bit more robust Saturday morning, showing a deeper surface low over Missouri and better dynamics for stronger storms. One way or another, both models do suggest the best chance of showers and storms will come during the first half of the day, with potential for drier air to enter North Alabama by afternoon. The high Saturday should be in the upper 70s.

SUNDAY/MONDAY: These two days are looking dry and pleasant with lower humidity and a good supply of sunshine. Showers return by the middle of next week; see the Weather Xtreme video for maps, graphics, and more 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. Scroll down for the show notes on the new episode we recorded last night.

CONNECT: You can find me on all of the major social networks…

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Twitter
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I have weather programs today at Englewood Elementary in Tuscaloosa, and McElwain Christian Academy in Birmingham. Look for the next Weather Xtreme video here by 4:00 this afternoon…. enjoy the day!

Categories: Weather

April 21, 2015 Weather Xtreme Video - Morning Edition

Weather Xtreme Video - 1 hour 45 min ago
April 21, 2015 Weather Xtreme Video - Morning Edition
The ABC 33/40 Weather Xtreme video is a detailed weather discussion for Alabama and the Southeast U.S. which goes beyond the normal stuff you see on TV! From James Spann and the team of ... From: ABC 33/40 Weather Views: 0 0 ratings Time: 05:08 More in News & Politics
Categories: Weather

WeatherBrains 482: Good Looking Bald Men

ABC 33/40 Weather Blog - 3 hours 48 min ago

WeatherBrains Episode 482 is now online (April 20, 2015). If you are crazy about weather, this is THE netcast audio program for you!

Tonight’s Guest WeatherBrain is a graduate of the University of Nebraska. He is in his 25th year of Broadcast Meteorology, starting right out of college with AccuWeather and then doing television in Des Moines before moving on to Oklahoma City where he would stay for 18 years. He has spent the last three years in Dallas. Rick Mitchell, welcome to WeatherBrains.

From The Weather Center:

WeatherBrains 101: The weather enterprise has seen the impact of events and inventions that have helped promote the understanding of our atmosphere in some huge ways. So what invention lead to one of the major explosion in weather data? Some may disagree, but you’ll find the answer interesting.

Listener Surveys: Okay, we continue to drive this topic into the ground, but we really do like to hear from you. Many thanks to everyone who has taken the time to fill out the Listener Survey. The survey takes just a minute or two to complete and provides us with an opportunity to learn where you are and hear your thoughts and comments on the show. Click here to take the survey.

To subscribe to the brand new SkyWritings, an email newsletter from the WeatherBrains gang, click HERE.

Picks of the Week:

Bill Murray – Federal web analytics

Kevin Selle – California Drought Pictures

Rick Smith – Scary Looking Cloud Club

James Spann – Day Of The Killer Tornadoes – 1974 Documentary

Rick Mitchell – Lubbock, TX Supercell Time Lapse

SkyDavers Blog – The Fog Bank

The WeatherBrains crew includes your host, James Spann, plus other notable geeks like Nate Johnson, Bill Murray, Aubrey Urbanowicz, Dr. John Scala, Rick Smith, Kevin Selle, and Brian Peters. They bring together a wealth of weather knowledge and experience for another fascinating netcast about weather.

Categories: Weather

WeatherBrains 482: Good Looking Bald Men

WeatherBrains - 4 hours 4 min ago

WeatherBrains Episode 482 is now online (April 20, 2015). If you are crazy about weather, this is THE netcast audio program for you!

Tonight’s Guest WeatherBrain is a graduate of the University of Nebraska. He is in his 25th year of Broadcast Meteorology, starting right out of college with AccuWeather and then doing television in Des Moines before moving on to Oklahoma City where he would stay for 18 years. He has spent the last three years in Dallas. Rick Mitchell, welcome to WeatherBrains.

From The Weather Center:

WeatherBrains 101: The weather enterprise has seen the impact of events and inventions that have helped promote the understanding of our atmosphere in some huge ways. So what invention lead to one of the major explosion in weather data? Some may disagree, but you’ll find the answer interesting.

Listener Surveys: Okay, we continue to drive this topic into the ground, but we really do like to hear from you. Many thanks to everyone who has taken the time to fill out the Listener Survey. The survey takes just a minute or two to complete and provides us with an opportunity to learn where you are and hear your thoughts and comments on the show. Click here to take the survey.

To subscribe to the brand new SkyWritings, an email newsletter from the WeatherBrains gang, click HERE.

Picks of the Week:

Bill Murray – Federal web analytics

Kevin Selle – California Drought Pictures

Rick Smith – Scary Looking Cloud Club

James Spann – Day Of The Killer Tornadoes – 1974 Documentary

Rick Mitchell – Lubbock, TX Supercell Time Lapse

SkyDavers Blog – The Fog Bank

The WeatherBrains crew includes your host, James Spann, plus other notable geeks like Nate Johnson, Bill Murray, Aubrey Urbanowicz, Dr. John Scala, Rick Smith, Kevin Selle, and Brian Peters. They bring together a wealth of weather knowledge and experience for another fascinating netcast about weather.

Categories: Weather

Cooler Tonight; Dry Through Tomorrow

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 15:48

RADAR CHECK: Nothing showing up across Alabama this afternoon despite a cold core upper trough passing overhead; looks like the air is too dry to support any isolated showers. However, just east of Alabama severe storms have formed over East Georgia and parts of South Carolina, where a number of tornado warnings have been required.

The image below was captured from the top of the Weather Channel building in North Atlanta by meteorologist Wayne Verno; a tornado warning was in effect at the time.

COOL, DRY AIR: Tonight will be clear and cooler; many locations will drop into the mid 40s early tomorrow morning. Then, tomorrow promises to be a beautiful spring day, with ample sunshine and a high in the low 70s.

MOIST AIR RETURNS: While the weather stays dry Wednesday morning, we will need to introduce the chance of showers late in the day Wednesday as moisture levels rise. Then, we will have a chance of occasional showers and thunderstorms Thursday and Friday as that moist airmass stays in place. Afternoon highs on these three days should be in the low to mid 70s. The rain won’t be continuous, but it could come at any hour of the day or night.

THE ALABAMA WEEKEND: Global models suggest the chance of showers and storms will continue into the beginning of the weekend on Saturday. A surface low will move along I-40 from Oklahoma City to Memphis, and we could be dealing with a few strong storms Saturday in that kind of setup. However, there is little bulk shear, and wind fields are not especially strong, so a major severe weather issue doesn’t look likely. Showers will likely end Saturday night, and Sunday looks dry with lower humidity and a good supply of sunshine. The high Saturday will be close to 80, but back in the low 70s Sunday.

Then, showers will return early next week as moisture levels rise again.

RAIN UPDATE: Birmingham’s total for the year is 21.14″… a surplus of 3.71″. The total for April is 8.21″, but not close to the record rain total for April; 13.79″ recorded in 1979. Of course, we still have 10 more days to go this month.

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 CT… you can watch it on “James Spann 24/7″ on cable systems around the state, or on the web here.

CONNECT: You can find me on all of the major social networks…

Facebook
Twitter
Google Plus
Instagram

Look for the next Weather Xtreme video here by 7:00 a.m. tomorrow….

Categories: Weather

April 20, 2015 Weather Xtreme Video - Afternoon Edition

Weather Xtreme Video - Mon, 04/20/2015 - 15:45
April 20, 2015 Weather Xtreme Video - Afternoon Edition
The ABC 33/40 Weather Xtreme video is a detailed weather discussion for Alabama and the Southeast U.S. which goes beyond the normal stuff you see on TV! From James Spann and the team of ... From: ABC 33/40 Weather Views: 101 2 ratings Time: 04:56 More in News & Politics
Categories: Weather

Calmer Weather For Alabama Today

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 06:15

STORMS ARE OUT OF HERE: The batch of noisy, pre-dawn thunderstorms that moved through North Alabama is over into Northeast Georgia, and moving away from us. Thankfully there were very few reports of wind damage early this morning in our state, and the day ahead will be much calmer than the past 48 hours.

This lightning photo from early this morning was taken at Snead, in Blount County, by Jake King…

We expect a mix of sun and clouds today, and this afternoon we will mention just the risk of isolated showers as the upper trough axis passes overhead. Most of the moisture is gone, so any rain will be light and spotty, and many communities will be dry today. The high will be in the low to mid 70s this afternoon.

Tomorrow promises to be a beautiful day with low humidity and a cool morning. We begin with an early morning low in the mid 40s, then we climb into the low 70s with sunshine in full supply.

MOISTURE RETURNS WEDNESDAY: Wednesday looks like a partly sunny day, and we will mention the risk of a few afternoon showers as moisture begins to return. Showers and storms become more likely Thursday and Friday ahead of another upper trough lifting out of the Southwest U.S. Highs will remain in the 70s.

STRONG STORMS? A surface low is forecast to be northwest of Alabama by Friday night, and the GFS is hinting that strong, possibly severe storms could be an issue Friday night into Saturday morning with decent upper support. Really too early to define the specific risk.

THE WEEKEND: The forecast for Saturday is low confidence due to model madness. The GFS hints the rain will be gone by midday Saturday, but the European model (ECMWF) keeps a chance of showers and storms through the day. We should have better clarity in coming days, but for now we will lean toward the wetter ECMWF solution and keep rain in the forecast. But, Sunday looks very nice with ample sunshine and lower humidity levels. Saturday’s high will be in the 77-80 degree range, but back in the low 70s Sunday.

RAIN UPDATE: Birmingham’s rain total for the year is 20.41″, and the surplus is 2.98″. The total so far for the month of April is 7.48″. FYI… this is not close to a record… our wettest April on record was in 1979 when we recorded 13.79″ for the month.

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 episode tonight at 8:30 CT… you can watch it on “James Spann 24/7″ on cable systems around the state, or on the web here.

CONNECT: You can find me on all of the major social networks…

Facebook
Twitter
Google Plus
Instagram

I have a weather program this morning at St. Clair County High School in Odenville… be looking for the next Weather Xtreme video here by 4:00 this afternoon. Enjoy the day!

Categories: Weather

April 20, 2015 Weather Xtreme Video - Morning Edition

Weather Xtreme Video - Mon, 04/20/2015 - 06:13
April 20, 2015 Weather Xtreme Video - Morning Edition
The ABC 33/40 Weather Xtreme video is a detailed weather discussion for Alabama and the Southeast U.S. which goes beyond the normal stuff you see on TV! From James Spann and the team of ... From: ABC 33/40 Weather Views: 444 4 ratings Time: 06:34 More in News & Politics
Categories: Weather

Watch County Notification

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 03:22

This is the text of a severe warning from the National Weather Service for part of the AlabamaWX.com coverage area. Standby for more details to be added to this post by our meteorologists.
WWUS64 KBMX 200821
WCNBMX

WATCH COUNTY NOTIFICATION FOR WATCH 85
NATIONAL WEATHER SERVICE BIRMINGHAM AL
321 AM CDT MON APR 20 2015

ALC009-057-093-127-133-200930-
/O.CAN.KBMX.SV.A.0085.000000T0000Z-150420T1200Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 85 FOR THE FOLLOWING AREAS

IN ALABAMA THIS CANCELS 5 COUNTIES

IN CENTRAL ALABAMA

BLOUNT WALKER

IN NORTHWEST ALABAMA

MARION WINSTON

IN WEST CENTRAL ALABAMA

FAYETTE

THIS INCLUDES THE CITIES OF…FAYETTE…HALEYVILLE…HAMILTON…
JASPER AND ONEONTA.

$$

ALC019-055-201200-
/O.CON.KBMX.SV.A.0085.000000T0000Z-150420T1200Z/

SEVERE THUNDERSTORM WATCH 85 REMAINS VALID UNTIL 7 AM CDT THIS
MORNING FOR THE FOLLOWING AREAS

IN ALABAMA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST ALABAMA

CHEROKEE ETOWAH

THIS INCLUDES THE CITIES OF…CENTRE AND GADSDEN.

$$

Categories: Weather

Severe Thunderstorm Warning: NE Blount Co.

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 02:33

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
NORTHEASTERN BLOUNT COUNTY IN CENTRAL ALABAMA…

* UNTIL 245 AM CDT

* AT 232 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED OVER
BROOKSVILLE…OR 8 MILES SOUTH OF ARAB…MOVING NORTHEAST AT 55
MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE
TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
SNEAD…STRAWBERRY…MCLARTY AND BROOKSVILLE.

Categories: Weather

Severe Thunderstorm Warning: Cullman County

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 01:55

Strong to severe thunderstorms with a history of producing wind damage are moving across western Cullman County at this time. They will be approaching I-65 shortly. Be in a safe place as these dangerous storms approach.

THE NATIONAL WEATHER SERVICE IN JACKSON (FOR HUNTSVILLE) HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
CULLMAN COUNTY IN NORTH CENTRAL ALABAMA…

* UNTIL 245 AM CDT

* AT 154 AM CDT…A SEVERE THUNDERSTORM WAS LOCATED NEAR HELICON…OR
7 MILES EAST OF ARLEY…MOVING EAST AT 55 MPH.

HAZARD…60 MPH WIND GUSTS.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT DAMAGE TO ROOFS…SIDING AND TREES.

* THIS SEVERE THUNDERSTORM WILL BE NEAR…
DODGE CITY AROUND 205 AM CDT.
GOOD HOPE AROUND 210 AM CDT.
CULLMAN AND HANCEVILLE AROUND 215 AM CDT.
HOLLY POND AROUND 225 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BREMEN…WALTER…LOGAN…WEST POINT…GARDEN CITY…BALDWIN…CRANE
HILL…JONES CHAPEL…PHELAN AND BAILEYTON.

AEGWWWW

Categories: Weather

Severe Thunderstorm Warning: Walker and Winston

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 01:17

The good news is that the storms are definitely weaker and the warnings will be allowed to expire soon.

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
NORTHWESTERN WALKER COUNTY IN CENTRAL ALABAMA…
WINSTON COUNTY IN NORTHWESTERN ALABAMA…

* UNTIL 215 AM CDT

* AT 116 AM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTH OF LYNN TO 6 MILES SOUTH OF GLEN
ALLEN…MOVING EAST AT 50 MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…HAIL DAMAGE TO VEHICLES IS POSSIBLE. EXPECT WIND DAMAGE

TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
JASPER…CARBON HILL…LYNN…ARLEY…DOUBLE SPRINGS…ADDISON…
KANSAS…NAUVOO…ELDRIDGE…SARDIS…CAMP MCDOWELL…CURRY…
HELICON…BRUSHY LAKE…SMITH LAKE…ASHBANK…INMANFIELD…POPLAR
SPRINGS…FALLS CITY AND CORINTH REC AREA.

GRANTHAM

Categories: Weather

Severe Thunderstorm Warning: Lamar County

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 01:16

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
CENTRAL LAMAR COUNTY IN WEST CENTRAL ALABAMA…

* UNTIL 145 AM CDT

* AT 114 AM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR CALEDONIA TO NEAR BLOOMING GROVE…MOVING
NORTHEAST AT 40 MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…MINOR TREE DAMAGE IS POSSIBLE.

* LOCATIONS IMPACTED INCLUDE…
VERNON…SULLIGENT…BEAVERTON…LAMAR COUNTY AIRPORT…BEDFORD…
LAMAR COUNTY PUBLIC LAKE…STAR AND HIGHTOGY.

Categories: Weather

Severe Thunderstorm Watch Issued for Alabama

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 01:11


BULLETIN – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 85
NWS STORM PREDICTION CENTER NORMAN OK
110 AM CDT MON APR 20 2015

SEVERE THUNDERSTORM WATCH 85 IS IN EFFECT UNTIL 700 AM CDT
FOR THE FOLLOWING LOCATIONS

. ALABAMA COUNTIES INCLUDED ARE

BLOUNT CHEROKEE COLBERT
CULLMAN DEKALB ETOWAH
FAYETTE FRANKLIN JACKSON
LAUDERDALE LAWRENCE LIMESTONE
MADISON MARION MARSHALL
MORGAN WALKER WINSTON http://www.jamesspann.com/wordpress/wp-admin/media-upload.php?post_id=90623&type=image&TB_iframe=1

Categories: Weather

Severe Threat Lessens But Continues

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 00:51

Posted 12:49 a.m.

The SPC has issued a new Mesoscale Discussion for Alabama:

Categories: Weather

New Severe Thunderstorm Warning Further East

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 00:49

Posted 12:49 a.m. Sunday

Severe thunderstorms in Northwest Alabama from Hamilton to east of Vernon in Lamar County have produced winds over 60 mph. Be in safe shelter as these dangerous storms approach.

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
NORTHEASTERN LAMAR COUNTY IN WEST CENTRAL ALABAMA…
MARION COUNTY IN NORTHWESTERN ALABAMA…
NORTHWESTERN FAYETTE COUNTY IN WEST CENTRAL ALABAMA…

* UNTIL 130 AM CDT

* AT 1247 AM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 9 MILES NORTHWEST OF HACKLEBURG TO NEAR WESTON TO
NEAR VERNON…MOVING NORTHEAST AT 50 MPH.

HAZARD…60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE…RADAR INDICATED.

IMPACT…EXPECT WIND DAMAGE TO ROOFS…SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE…
HAMILTON…WINFIELD…FAYETTE…GUIN…HACKLEBURG…BRILLIANT…
GLEN ALLEN…BEAVERTON…GU-WIN…BLOOMING GROVE…BLUFF…BRINN…
LAKE BUTTAHATCHEE…BEAR CREEK…TWIN…PINEY GROVE…TESSNER…
WAYSIDE…FOWLERS CROSSROADS AND PIKEVILLE.

Categories: Weather

Severe Thunderstorm Warning: Lamar and Marion Counties

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 00:28

Posted 12:31 a.m.

UPDATE AT 12:45 AM
Trees are reported down at Shottsville in Marion County.

ORIGINAL POST
Strong winds from a heat burst or similar phenomenon has caused a 66 mph wind gust at Columbus AFB just across the border in Mississippi from Lamar County. These winds can cause damage.

The storms near Caledonia MS could produce large hail as well. This activity will push to near Vernon in Lamar County.

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR…
LAMAR COUNTY IN WEST CENTRAL ALABAMA…
NORTHWESTERN MARION COUNTY IN NORTHWESTERN ALABAMA…

* UNTIL 115 AM CDT

* AT 1227 AM CDT…SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM AMORY TO 11 MILES NORTHWEST OF BEDFORD TO NEAR
ABERDEEN TO NEAR COLUMBUS AFB…MOVING NORTHEAST AT 45 MPH.

Categories: Weather

Heat Burst!

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 00:28

Decaying thunderstorms over South Central Mississippi have caused a phenomenon we normally only see across the Plains: a heat burst.

As thunderstorms die, evaporating precipitation falling into dry air making the more dense that its surroundings. It sinks and heats by compression, drying at the same time.

When this air hits the ground, it spreads out causing strong winds. Temperatures rise and dewpoints drop rapidly. This happened at Jackson MS in the past hour.

This could reach over into Sumter County shortly. Interesting.

Categories: Weather

Storms Are Weaker, But Still Pack a Punch

ABC 33/40 Weather Blog - Mon, 04/20/2015 - 00:04

Monday, 12:05 a.m.

Strong storms continue to march across Mississippi tonight, but they have weakened somewhat over the past hour.

There are no warnings in Mississippi now.

There have been reports of large hail and 40 mph wind gusts in the past hour in the storm that is currently near New Albany.

All of this activity will push into Northwest Alabama from Lamar and Marion Counties into Franklin, Colbert and Lauderdale. The storms should continue to slowly weaken.

The threat of severe weather is diminishing as the storms move into more stable air, but there still could be severe weather overnight. We are waiting to see if the watch will be extended into Alabama. We will continue to monitor closely.

Categories: Weather

Tornado Watch Issued for Mississippi

ABC 33/40 Weather Blog - Sun, 04/19/2015 - 21:04

Click image to enlarge

Posted 9:04 p.m. Sunday

Intense thunderstorms continue tonight over Arkansas and Louisiana. The strongest ones are over Central Louisiana between I-20 and I-49. A tornado warning is in effect for the area just downstream from Alexandria, for a severe thunderstorm that showed indications of a tornado near the Alexandria International Airport earlier. Half dollar sized hail was reported in Tioga in Rapides Parish.

This storm is turning right now a little so it will pass south of Natchez MS.

To the north, a broken line of supercell thunderstorms, many of which are severe, extends along the Mississippi River from Popular Bluff MO to Clarksdale MS south of Memphis.

This activity is along the pre-frontal trough. Closer to the cold front, other strong storms have formed from the Little Rock area to Fordyce and ElDorado in Arkansas.

A tornado watch is now in effect for much of Mississippi until 3 a.m.

BOTTOM LINE
Will this activity affect Alabama overnight?

The short answer is yes. But there are definite signs that the storms will weaken fairly quickly after getting into Alabama around 1 a.m. Instability levels across western Alabama are almost non-existent. The numbers on the graphic are dewpoint values, and you can see they have dropped to near or below 60F across eastern Mississippi and western Alabama. There is really no mechanism for them to recover before the storms arrive.

There is fairly good consensus among the mesoscale models that the storms will pretty much fall apart as they move across the state. Therefore, the threat for widespread severe weather is very low for Alabama overnight.

But, this is Alabama in April, and our weather watchword is “When it comes to thunderstorms, expect the unexpected.” So we will be monitoring their march across Mississippi towards our front doorstep carefully throughout the night. You should too. Have a source for receiving warnings even while you sleep overnight. And check back periodically for updates.

Categories: Weather
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