Alert archive / Alabama / Tornado Warnings in 2021

Tornado Warning 46, NWS Birmingham, AL

March 25, 2021Jefferson County, Shelby County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 25, 2021, 12:53 PM CDT for Jefferson County, Shelby County, Alabama. It was in force for 67 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 25, 2021, 12:53 PM CDT (17:53 UTC)
Expired
Mar 25, 2021, 2:00 PM CDT
In force
67 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Emergency
Tornado emergency
Tornado
Radar indicated
Hail
0.75 in

Counties Jefferson County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 25 km from the middle of the area, began a volume at 17:54 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Mar 25, 1:17 PM CDTTORNADO5 S Bessemer Airport, ALA STRONG TORNADO TRACKED 34 MILES ACROSS NORTHERN SHELBY COUNTY JUST INTO ST. CLAIR COUNTY, DAMAGING OR DESTROYING NUMEROUS HOMES. THE TORNADO REACHED EF3 INTENSITY IN THE EAGLE POINT NEIGHBORHOOD.
Mar 25, 1:19 PM CDTTORNADO4 S Bessemer Airport, ALCONFIRMED TORNADO PER TDS OFF OF KBMX RADAR.
Mar 25, 1:30 PM CDTTSTM WND DMG2 Ne Helena, ALSEVERAL TREES UPROOTED AT THE PELHAM HIGH SCHOOL. POSSIBLE TORNADO.
Mar 25, 1:35 PM CDTTORNADO1 Nw Highland Lakes, ALNUMEROUS TREES UPROOTED NEAR HIGHWAY 280 AND DOUG BAKER BLVD. TREES BLOCKING HIGHWAY 280.
Mar 25, 1:35 PM CDTTORNADO1 Wnw Highland Lakes, ALNUMEROUS STRUCTURES REPORTED DAMAGED IN THE EAGLE POINT AND GREYSTONE SUBDIVISIONS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this tornado warning; the first came 24 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Mar 25, 11:26 AM CDTTornado Watch PDSSPC9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.9 hours before the alert went out and 25 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2021-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 54 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 613 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
54 J/kg
Mixed-layer CIN
-239 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
613 m²/s²
0-3 km storm-relative helicity
713 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.6

Open this sounding in Storm Lab

The text

As transmitted.

362 
WFUS54 KBMX 251753
TORBMX
ALC073-117-251900-
/O.NEW.KBMX.TO.W.0046.210325T1753Z-210325T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
1253 PM CDT Thu Mar 25 2021

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Shelby County in central Alabama...
  Southeastern Jefferson County in central Alabama...

* Until 200 PM CDT.
    
* At 1253 PM CDT, a severe thunderstorm capable of producing a
  tornado was located over West Blocton, or 10 miles north of
  Centreville, moving northeast at 45 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Southern Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer,
  Homewood, Pelham, Mountain Brook, Trussville, Helena, Irondale,
  Leeds, Moody, Chelsea, Childersburg, Wilsonville, Indian Springs
  Village, Vincent, Harpersville and Westover.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3329 8636 3327 8640 3328 8643 3326 8643
      3311 8697 3316 8697 3317 8703 3325 8703
      3325 8706 3328 8707 3329 8711 3368 8653
TIME...MOT...LOC 1753Z 243DEG 38KT 3313 8716 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

17/KLAWS
8 follow-up statements
635 
WWUS54 KBMX 251758
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
1258 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
1258 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR SHELBY
AND SOUTHEASTERN JEFFERSON COUNTIES...
        
At 1258 PM CDT, a confirmed tornado was located over West Blocton, or
12 miles north of Centreville, moving northeast at 45 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Southern Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer,
Homewood, Pelham, Mountain Brook, Trussville, Helena, Irondale,
Leeds, Moody, Chelsea, Childersburg, Wilsonville, Indian Springs
Village, Vincent, Harpersville and Westover.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3329 8636 3327 8640 3328 8643 3326 8643
      3311 8697 3316 8697 3317 8703 3325 8703
      3325 8706 3328 8707 3329 8711 3368 8653
TIME...MOT...LOC 1758Z 243DEG 38KT 3316 8710 

TORNADO...OBSERVED
HAIL...<.75IN

$$

17/KLAWS
106 
WWUS54 KBMX 251809
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
109 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
109 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR SHELBY
AND SOUTHEASTERN JEFFERSON COUNTIES...
        
At 108 PM CDT, a confirmed tornado was located near Tannehill
Ironworks State Park, or 11 miles northwest of Montevallo, moving
northeast at 40 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Southeastern Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer,
Homewood, Pelham, Mountain Brook, Trussville, Helena, Irondale,
Leeds, Moody, Chelsea, Childersburg, Wilsonville, Indian Springs
Village, Vincent, Harpersville and Westover.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3329 8636 3327 8640 3328 8643 3326 8643
      3314 8696 3314 8697 3316 8697 3317 8703
      3325 8703 3325 8706 3368 8653
TIME...MOT...LOC 1808Z 241DEG 36KT 3320 8701 

TORNADO...OBSERVED
HAIL...<.75IN

$$

17/KLAWS
577 
WWUS54 KBMX 251819
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
119 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
119 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR CENTRAL
SHELBY AND SOUTHEASTERN JEFFERSON COUNTIES...
    
At 119 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Helena, moving northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Southeastern Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer,
Homewood, Pelham, Mountain Brook, Trussville, Helena, Irondale,
Leeds, Moody, Chelsea, Wilsonville, Indian Springs Village, Vincent,
Harpersville, Westover and Shops of Grand River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3329 8636 3328 8643 3317 8692 3320 8696
      3324 8699 3331 8699 3368 8653
TIME...MOT...LOC 1819Z 237DEG 35KT 3326 8691 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

17/KLAWS
526 
WWUS54 KBMX 251820
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
120 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
120 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR CENTRAL
SHELBY AND SOUTHEASTERN JEFFERSON COUNTIES...
        
At 120 PM CDT, a confirmed tornado was located near Helena, moving
northeast at 40 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Southeastern Birmingham, Hoover, Vestavia Hills, Alabaster, Bessemer,
Homewood, Pelham, Mountain Brook, Trussville, Helena, Irondale,
Leeds, Moody, Chelsea, Wilsonville, Indian Springs Village, Vincent,
Harpersville, Westover and Shops of Grand River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3329 8636 3328 8643 3318 8690 3320 8696
      3324 8699 3331 8699 3368 8653
TIME...MOT...LOC 1820Z 237DEG 35KT 3326 8690 

TORNADO...OBSERVED
HAIL...<.75IN

$$

17/KLAWS
853 
WWUS54 KBMX 251830
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
130 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
130 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR NORTHERN
SHELBY AND SOUTHEASTERN JEFFERSON COUNTIES...
        
At 130 PM CDT, a confirmed tornado was located over Oak Mountain
Amphitheater, or over Pelham, moving northeast at 45 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Hoover, Vestavia Hills, Alabaster, Pelham, Mountain Brook,
Trussville, Helena, Irondale, Leeds, Moody, Chelsea, Indian Springs
Village, Vincent, Harpersville, Westover, Shops of Grand River, Oak
Mountain State Park, Vandiver, Barber Motorsports Park and Oak
Mountain Amphitheater.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3326 8681 3328 8688 3331 8689 3335 8688
      3368 8653
TIME...MOT...LOC 1830Z 239DEG 41KT 3332 8679 

TORNADO...OBSERVED
HAIL...<.75IN

$$

17/KLAWS
843 
WWUS54 KBMX 251833
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
133 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
133 PM CDT Thu Mar 25 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
NORTHEASTERN SHELBY AND SOUTHEASTERN JEFFERSON COUNTIES...
        
At 133 PM CDT, a confirmed large and extremely dangerous tornado was
located over Oak Mountain Amphitheater, or over Pelham, moving
northeast at 45 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

Locations impacted include...
Hoover, Vestavia Hills, Pelham, Trussville, Irondale, Leeds, Moody,
Chelsea, Indian Springs Village, Vincent, Harpersville, Westover,
Shops of Grand River, Oak Mountain State Park, Vandiver, Barber
Motorsports Park, Oak Mountain Amphitheater, Greystone, Highland
Lakes and Cahaba Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to a basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3330 8677 3331 8680 3333 8682 3336 8682
      3368 8653
TIME...MOT...LOC 1833Z 237DEG 37KT 3334 8677 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

17/KLAWS
629 
WWUS54 KBMX 251837
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
137 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
137 PM CDT Thu Mar 25 2021

...TORNADO EMERGENCY FOR SHELBY COUNTY...

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
NORTHEASTERN SHELBY AND EAST CENTRAL JEFFERSON COUNTIES...
        
At 136 PM CDT, a confirmed large and destructive tornado was located
over Indian Springs Village, or near Hoover, moving northeast at 45
mph.

TORNADO EMERGENCY for Hwy 280 Lee Branch. This is a PARTICULARLY 
DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Deadly tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

Locations impacted include...
Hoover, Vestavia Hills, Trussville, Leeds, Moody, Chelsea, Indian
Springs Village, Vincent, Harpersville, Westover, Shops of Grand
River, Oak Mountain State Park, Vandiver, Barber Motorsports Park,
Greystone, Highland Lakes, Fowler Lake, Lake Purdy, Brook Highland
and Meadowbrook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous, and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to an interior room on the lowest floor of a sturdy building. Avoid
windows. If in a mobile home, a vehicle or outdoors, move to the
closest substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3336 8634 3334 8637
      3331 8673 3332 8676 3335 8678 3338 8677
      3368 8653
TIME...MOT...LOC 1836Z 237DEG 37KT 3336 8673 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CATASTROPHIC
HAIL...<.75IN

$$

17/KLAWS
019 
WWUS54 KBMX 251848
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
148 PM CDT Thu Mar 25 2021

ALC073-117-251900-
/O.CON.KBMX.TO.W.0046.000000T0000Z-210325T1900Z/
Shelby AL-Jefferson AL-
148 PM CDT Thu Mar 25 2021

...TORNADO EMERGENCY FOR SHELBY COUNTY...

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR
NORTHEASTERN SHELBY AND EAST CENTRAL JEFFERSON COUNTIES...
        
At 147 PM CDT, a confirmed large and destructive tornado was located
over Mount Laurel, or near Chelsea, moving northeast at 45 mph.

TORNADO EMERGENCY for Hwy 280 and 119. This is a PARTICULARLY 
DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Deadly tornado.

SOURCE...Radar confirmed tornado.

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible.

Locations impacted include...
Vestavia Hills, Trussville, Leeds, Moody, Chelsea, Vincent, Highland
Lakes, Shops of Grand River, Fowler Lake, Vandiver, Barber
Motorsports Park, Lake Purdy, Brook Highland, Greystone, Meadowbrook,
Mount Laurel, Oak Mountain State Park, Grants Mill Road Bridge,
Sterrett and Shoal Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous, and potentially deadly
tornado is on the ground. To protect your life, TAKE COVER NOW! Move
to an interior room on the lowest floor of a sturdy building. Avoid
windows. If in a mobile home, a vehicle or outdoors, move to the
closest substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3362 8655 3356 8655 3355 8648 3350 8648
      3350 8638 3339 8638 3335 8663 3337 8668
      3339 8670 3345 8671 3368 8653
TIME...MOT...LOC 1847Z 243DEG 38KT 3342 8660 

TORNADO...OBSERVED
TORNADO DAMAGE THREAT...CATASTROPHIC
HAIL...<.75IN

$$

17/KLAWS

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this tornado warning went out at Mar 25, 12:39 PM CDT, 14 minutes earlier.

Area forecast discussion, Mar 25, 12:39 PM CDT, 14 minutes before
Area Forecast Discussion
National Weather Service Birmingham AL
1239 PM CDT Thu Mar 25 2021

.UPDATE...
For 18Z Aviation.

&&

.SHORT TERM...
/Updated at 450 AM CDT Thu Mar 25 2021/
Today through Friday.

So far this AM we have had widespread showers with embedded
thunderstorms as it spread NE across C AL. The activity has been
elevated and while we are watching for any rogue storms, severe
activity during the early morning hours should be marginal at
best until the warm front makes its way northward later today. We
have increased the severe threat in the NW half of C AL for this
afternoon and evening. This probably doesn't come as much of a
surprise as this system is ramping up to be significant there with
strong tornadoes a possibility. The SE half of C AL is a
different story. While we have a marginal threat this AM for
portions of C AL, for the rest of the afternoon and evening,
parameters are much lower in the SE counties with convection not
as likely there until later this evening. After the current
convection currently on the radar pushes N, we should have a
somewhat lull in activity in the SE.

In contrast, by around 11am, our warm front should be to the N of
the area. Models suggest some cellular activity will likely pop
up in the NW first. MUCAPE will not be lacking, but will be
highest in the west for this afternoon. 0-6km bulk shear will be
in ample supply across C AL. However, 0-1km shear will be
decidedly higher in the NW. Although amounts vary, guidance is in
agreement decreasing this low level shear significantly after 6z
as the bulk of the instability skirts to the NE. This will be not
only with the front moving across, but our negatively tilted upper
shortwave that is expected to be over the Arklatex ~18z today
expected to race off toward IL/IN by midnight tonight. With the
bulk of the activity in the SE counties expected for later this
evening, this greatly decreases the chance for severe weather for
them S of the I85 corridor. This is the reason for the sharp risk
gradient in our severe graphics. Timing is pretty similar to what
we had yesterday except possibly starting in the NW at 11am
instead of noon. The front is expected to make progress after
midnight with the risk for TS in the SE counties much lower for
the day on Friday with lower dew points moving in behind the
front.

08

.LONG TERM...
/Updated at 450 AM CDT Thu Mar 25 2021/
Friday night through Wednesday.

Rain chances should be minimal for Friday evening but increase
after midnight into the pre-dawn hours on Saturday with some
thunderstorms possible in the NW with shortwave activity. Rain
chances increase once again for Saturday into Sunday with the
approach of another frontal system number 2. However, the upper
dynamics still need to be worked out. The upper setup does not
show a negatively tilted system like front 1. However, we will
have warm and moist air waiting for this springtime front. While
some strong storms cannot be ruled out, will hold off adding
severe just yet with the weekend system. Extended guidance
diverges on timing and strength of the upper low/shortwave behind
the front for Mon/Tue time frame, so only going with low pops for
now. A third front approaches by end of the extended by Wednesday
with elevated shower and thunderstorm chances returning.

08

&&

.AVIATION...
18Z TAF Discussion.

Less than ideal flying conditions continue across Central
Alabama. Severe convective weather continues to impact the area
along with the challenge of wind shear, gusty surface winds, and
turbulence. Mainly southerly sfc winds at 10-15 kts with higher
gusts are expected through the afternoon. TAFs are mainly MVFR
for much of the afternoon along with the expectation of TSRA
across northern terminals. MGM/TOI are staying on the better side
of conditions, however. A convective line of strong to severe
thunderstorms will eventually sweep across the area later this
afternoon and evening. This will impact most terminals and also
cause a wind shift after FROPA. Any IFR conditions should be
associated with convection through the TAF period. Will monitor
closely for any needed amendments.

40/Sizemore

&&

.FIRE WEATHER...

A moist air mass with high relative humidity values will develop
today and continue through the weekend with multiple episodes of
showers and thunderstorms. A warm front will lift northward
today and produce numerous showers and a few thunderstorms.
Southerly winds will increase to 10 to 15 mph with higher gusts
today as a strong storm system approaches from the west. There is
risk of severe thunderstorms with tornadoes this afternoon and
evening. Rain chances are lower on Friday, but more showers and
thunderstorms are expected for over the weekend.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     52  75  54  79  61 /  90  10  40  70  80
Anniston    57  78  59  82  63 /  90  10  40  60  60
Birmingham  55  76  60  81  64 /  90  10  50  70  80
Tuscaloosa  54  78  62  82  64 /  80  10  40  60  80
Calera      57  76  62  82  64 /  90  10  40  60  70
Auburn      63  76  64  82  64 /  80  30  20  30  20
Montgomery  64  78  65  85  67 /  70  20  20  30  30
Troy        65  80  66  85  67 /  70  40  20  20  20

&&

.BMX WATCHES/WARNINGS/ADVISORIES/...
Wind Advisory until 10 PM CDT this evening for the following
counties: Autauga...Barbour...Bibb...Blount...Bullock...
Calhoun...Chambers...Cherokee...Chilton...Clay...Cleburne...
Coosa...Dallas...Elmore...Etowah...Fayette...Greene...Hale...
Jefferson...Lamar...Lee...Lowndes...Macon...Marengo...Marion...
Montgomery...Perry...Pickens...Pike...Randolph...Russell...
Shelby...St. Clair...Sumter...Talladega...Tallapoosa...
Tuscaloosa...Walker...Winston.

&&
Hazardous weather outlook, Mar 25, 5:04 AM CDT, 7 hours 49 minutes before
Hazardous Weather Outlook
National Weather Service Birmingham AL
504 AM CDT Thu Mar 25 2021

ALZ011>015-017>050-261315-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
504 AM CDT Thu Mar 25 2021

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Outlook through Tonight.

A couple severe storm may occur this morning with a threat of a
couple tornadoes, damaging winds, and hail up to quarter size. This
morning threat is mainly for areas near and west of Interstate 65
through around 11 am.

A significant severe weather event is expected across much of
Central Alabama from around 11 am through midnight. The greatest
threat will be along and northwest of Interstate 59, where strong
tornadoes, damaging winds, and large hail will be possible. The
overall threat gradually decreases to the southeast of there.

A Wind Advisory is in effect from 11 AM through 10 PM for most of
Central Alabama excluding areas generally south of Interstate 85.
Sustained winds will be out of the south around 10 to 20 mph with
occasional gusts up to 40 mph outside of any thunderstorm activity,
especially in higher terrain areas.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Minor flooding may occur along portions of the Tombigbee and Black
Warrior River Basins this weekend and into early next week.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management is expected
on today into this evening.

08

In the hours before

Local storm report, Mar 25, 11:07 AM CDT, 1 hour 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1107 AM CDT THU MAR 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 AM     HEAVY RAIN       1 WSW CHALKVILLE        33.66N 86.66W
03/25/2021  E1.50 INCH       JEFFERSON          AL   LAW ENFORCEMENT

            CORRECTS PREVIOUS HEAVY RAIN REPORT FROM 1 S
            PINSON. FLOODING IN THE CENTER POINT/PINSON
            AREA. SWEENEY HOLLOW ROAD BETWEEN 25TH AVE.
            NW AND OAK SHADOW CIRCLE CLOSED BOTH WAYS.

&&
Local storm report, Mar 25, 11:14 AM CDT, 1 hour 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1114 AM CDT THU MAR 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0955 AM     TSTM WND DMG     2 W INVERNESS           33.42N 86.74W
03/25/2021                   JEFFERSON          AL   LAW ENFORCEMENT

            CALDWELL MILL AT PAHOKEE TRACE IS BLOCKED BY
            DOWNED TREES.

&&
Local storm report, Mar 25, 12:01 PM CDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1201 PM CDT THU MAR 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1148 AM     HAIL             1 SSE GARDENDALE        33.64N 86.81W
03/25/2021  E1.00 INCH       JEFFERSON          AL   PUBLIC

            SOCIAL MEDIA VIDEO OF HAIL AT LEAST QUARTER
            SIZE NEAR GARDENDALE.

&&

AS
Local storm report, Mar 25, 12:15 PM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1215 PM CDT THU MAR 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1158 AM     HAIL             1 WNW CHALKVILLE        33.68N 86.67W
03/25/2021  E1.00 INCH       JEFFERSON          AL   PUBLIC

            SOCIAL MEDIA PHOTOS OF QUARTER SIZE HAIL
            NEAR PINSON.

&&

AS
Local storm report, Mar 25, 12:30 PM CDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1230 PM CDT THU MAR 25 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1219 PM     TORNADO          4 WNW PHIPPS            32.95N 87.56W
03/25/2021                   HALE               AL   OFFICIAL NWS OBS

            CONFIRMED TORNADO PER TDS OFF OF KBMX RADAR.

&&

AS
Special weather statement, Mar 25, 12:45 PM CDT, 8 minutes before
Special Weather Statement
National Weather Service Birmingham AL
1245 PM CDT Thu Mar 25 2021

ALZ020-021-251845-
Cleburne AL-Cherokee AL-
1245 PM CDT Thu Mar 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CLEBURNE AND
CHEROKEE COUNTIES UNTIL 145 PM CDT...

At 1244 PM CDT, Doppler radar was tracking a strong thunderstorm near
Neely Henry Lake, or near Rainbow City, moving east at 45 mph.

Pea size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Piedmont, Centre, Cedar Bluff, Little River Canyon National Preserve,
Forney, Centre Municipal Airport, Leesburg, Sand Rock, Gaylesville,
Tennala, Cherokee Rock Village, Pleasant Gap, Cornwall Furnace Park,
Blanche, Eastern Weiss Lake, Slackland, Western Weiss Lake, Mars
Hills, Moshat and Ball Flat.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3383 8537 3381 8556 3380 8560 3381 8559
      3384 8559 3385 8564 3388 8564 3389 8553
      3395 8553 3397 8574 3410 8580 3412 8579
      3411 8584 3424 8584 3424 8581 3426 8577
      3436 8566 3437 8563 3445 8558 3450 8551
TIME...MOT...LOC 1744Z 248DEG 38KT 3387 8600

25/Owen

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 24, 10:58 PM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more24 hr
Mar 25, 1:43 AM CDTSpecial Weather StatementBMXPike47 min
Mar 25, 4:54 AM CDTSpecial Weather StatementBMXLee36 min
Mar 25, 7:45 AM CDTSpecial Weather StatementBMXMarengo45 min
Mar 25, 7:48 AM CDTSpecial Weather StatementBMXTuscaloosa42 min
Mar 25, 8:46 AM CDTSpecial Weather StatementBMXJefferson, Tuscaloosa44 min
Mar 25, 8:53 AM CDTSpecial Weather StatementBMXMarshall22 min
Mar 25, 9:19 AM CDTSpecial Weather StatementBMXBlount41 min
Mar 25, 9:24 AM CDTAreal Flood AdvisoryBMXFayette, Walker, Winston3 hr
Mar 25, 9:28 AM CDTSpecial Weather StatementBMXJefferson47 min
Mar 25, 9:58 AM CDTSevere Thunderstorm WarningBMXJefferson, St. Clair32 min
Mar 25, 10:12 AM CDTAreal Flood AdvisoryBMXBlount, Jefferson3 hr
Mar 25, 10:18 AM CDTSevere Thunderstorm WarningBMXSt. Clair13 min
Mar 25, 10:28 AM CDTSpecial Weather StatementBMXCalhoun, Etowah, St. Clair47 min
Mar 25, 10:53 AM CDTSpecial Weather StatementBMXJefferson, Tuscaloosa, Walker37 min
Mar 25, 11:14 AM CDTSevere Thunderstorm WarningBMXBlount, Jefferson, St. Clair, Walker61 min
Mar 25, 11:19 AM CDTSevere Thunderstorm WarningBMXCalhoun, Cherokee, Cleburne15 min
Mar 25, 11:36 AM CDTTornado WarningBMXGreene, Hale54 min
Mar 25, 12:03 PM CDTSevere Thunderstorm WarningBMXBlount, Calhoun, Etowah, Jefferson, St. Clair, Talladega72 min
Mar 25, 12:11 PM CDTTornado WarningBMXBibb, Tuscaloosa64 min
Mar 25, 12:45 PM CDTSpecial Weather StatementBMXCherokee60 min
Mar 25, 12:47 PM CDTFlash Flood WarningBMXCherokee, Etowah6 hr
Mar 25, 12:54 PM CDTAreal Flood AdvisoryBMXJefferson, St. Clair4 hr
Mar 25, 1:28 PM CDTTornado WarningBMXPickens43 min
Mar 25, 1:46 PM CDTTornado Warning Tornado observedConsiderable damage threatBMXSt. Clair, Shelby, Talladega59 min
Mar 25, 1:57 PM CDTFlash Flood WarningBMXBlount, Jefferson, St. Clair9 hr
Mar 25, 2:23 PM CDTTornado Warning Tornado observedBMXCalhoun67 min
Mar 25, 2:32 PM CDTFlash Flood WarningBMXFayette, Jefferson, Lamar, Marion, Pickens, Tuscaloosa and 2 more4 hr
Mar 25, 2:45 PM CDTTornado WarningBMXFayette, Tuscaloosa, Walker15 min
Mar 25, 2:58 PM CDTTornado Warning Tornado observedBMXCherokee, Etowah45 min
Mar 25, 3:11 PM CDTTornado WarningBMXSumter37 min
Mar 25, 3:35 PM CDTTornado WarningBMXGreene55 min
Mar 25, 3:37 PM CDTTornado WarningBMXSumter53 min
Mar 25, 3:44 PM CDTTornado WarningBMXBlount, Jefferson25 min
Mar 25, 3:59 PM CDTTornado Warning EmergencyBMXGreene, Hale61 min
Mar 25, 4:10 PM CDTTornado Warning Tornado observedBMXHale, Tuscaloosa10 min
Mar 25, 4:27 PM CDTSpecial Weather StatementBMXJefferson33 min
Mar 25, 4:33 PM CDTTornado Warning EmergencyTornado observedConsiderable damage threatBMXBibb, Perry57 min
Mar 25, 4:45 PM CDTTornado WarningBMXJefferson18 min
Mar 25, 4:48 PM CDTSpecial Weather StatementBMXWalker27 min
Mar 25, 4:55 PM CDTTornado Warning Tornado observedBMXSt. Clair41 min
Mar 25, 5:05 PM CDTTornado Warning EmergencyTornado observedConsiderable damage threatBMXChilton, Shelby55 min
Mar 25, 5:16 PM CDTTornado Warning EmergencyTornado observedCatastrophic damage threatBMXBibb29 min
Mar 25, 5:24 PM CDTTornado WarningBMXCalhoun, Etowah28 min
Mar 25, 5:29 PM CDTAreal Flood AdvisoryBMXChilton, Coosa, Shelby, Talladega21 min
Mar 25, 5:50 PM CDTFlash Flood WarningBMXChilton, Coosa, Shelby, Talladega100 min
Mar 25, 5:50 PM CDTTornado Warning EmergencyTornado observedCatastrophic damage threatBMXShelby, Talladega23 min
Mar 25, 6:03 PM CDTSpecial Weather StatementBMXGreene27 min
Mar 25, 6:15 PM CDTSpecial Weather StatementBMXFayette30 min
Mar 25, 6:30 PM CDTAreal Flood WarningBMXCherokee3 days

Nearby

Tornado Warnings in Alabama, 2021Every tornado warning in 2021Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.