Alert archive / Alabama / Special Weather Statements in 2021

Special Weather Statement, NWS Birmingham, AL

March 28, 2021Perry County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 28, 2021, 8:23 AM CDT for Perry County, Alabama. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 28, 2021, 8:23 AM CDT (13:23 UTC)
Expired: Mar 28, 2021, 9:00 AM CDT
In force: 37 min
Issued by: NWS Birmingham, AL

County Perry County, AL

The radar

The Birmingham radar (KBMX), 65 km from the middle of the area, began a volume at 13:26 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.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 1.4 hours before the alert went out and 65 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 757 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 326 m²/s²
0-3 km storm-relative helicity: 355 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 9.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 28, 5:52 AM CDT, 2 hours 31 minutes earlier.

Area forecast discussion, Mar 28, 5:52 AM CDT, 2 hours 31 minutes before

Area Forecast Discussion
National Weather Service Birmingham AL
552 AM CDT Sun Mar 28 2021

.UPDATE...
Morning Update and 12Z Aviation.

&&

.SHORT TERM...
/Updated at 0536 AM CDT Sun Mar 28 2021/

Through Monday Night.

With ample instability ahead of the approaching cold front and
strong forcing aloft, thunderstorms will continue to be possible,
with the strongest activity just to our north. With that said,
there will be scattered pockets of severe winds and isolated
pockets of hail possible across all of Central Alabama this
morning in the northwest to mid afternoon in the southeast.

Wind profiles have begun to veer and are quickly losing the
support for tornadoes. There still is a non zero threat down to
I-85 but the biggest threats will be winds and hail, so will shift
the HWO to that for the rest of the day.

After Noon, strong surface destabilization is expected across the
south and southeast, which will result in storm intensification
with time as we proceed through the afternoon. The concern for
damaging winds and large hail will grow with time across the
southeast due to the further increasing instability through the
day on Sunday. While a brief tornado southeast can not be fully
ruled out, the potential is low compared to across the northwest
and northern counties this morning. As the cold front moves
through, a few lingering showers are expected, but the atmosphere
will stabilize quickly as cold air advection ensues.

Any remaining showers should be exiting the southeast counties
early tonight. Much cooler and drier air will overspread the area
by Monday morning with lows in the mid 30s north to 40s elsewhere.
Did add in patchy frost across the far northern counties. Not sure
if the winds will die completely off but the more sheltered
locations should at least see some patchy frost. Not enough
coverage to issue a Frost Advisory, but worth watching. Highs on
Monday will be pleasant with readings in the 60s. A warm front
will lift northward Monday night with a chance of showers across
the southern counties.

16

.LONG TERM...
/Updated at 0211 AM CDT Sun Mar 28 2021/

With the advancing warm front, look for mostly cloudy skies on
Tuesday with scattered showers and thunderstorms, with better
chances of rain south of I-20. Increasing rain chances Tuesday
night across north Alabama as low level southerly flow increases
ahead of an approaching short wave. Looks like the best coverage
here will be in the north. Behind it, a strong cold front will
push through Central Alabama on Wednesday producing widespread
showers and thunderstorms. There is small window across the
southern counties Wednesday afternoon when surface based
instability may be high enough for a low end severe threat, with
wind and hail the biggest concerns. SPC has issued a day 3
marginal just to our west, so confidence is increasing that we
will see a chance on Wednesday. Will go ahead and include a low
end confidence for severe storms on Wednesday in the HWO. A much
colder air mass will overspread the area Thursday and Friday. In
fact we could see some upper 20s in the north on Friday morning.
A Freeze Watch may be issued in the next few days if the trend
continues.

16

&&

.AVIATION...
12Z TAF Discussion.

Conditions will continue to deteriorate for the north as TSRA
moves through the sites ahead of and along a front. Gusty winds
will be possible outside of storms. A few storms could be strong
to severe with the frontal passage. Threat time for storms will be
best in the morning for TCL/BHM, morning to midday for
EET/ASN/ANB and midday to afternoon for MGM/TOI. May return to VFR
conditions again by 18z TCL to 23z TOI.

16

&&

.FIRE WEATHER...

A band of showers and thunderstorms will track southeast across
the area today. Some of the storms may be severe. Cooler with no
rain after 10 PM tonight through Monday. Increasing rain chances
Tuesday and Tuesday night as a warm front lifts northward. Showers
likely and a chance of storms on Wednesday. No fire weather
concerns due to moist ground fuels and high RH values.

&&

.PRELIMINARY POINT TEMPS/POPS...
Gadsden     68  36  66  42  71 / 100   0   0   0  30
Anniston    72  39  69  46  73 / 100   0   0  10  30
Birmingham  67  40  67  47  73 / 100   0   0  10  30
Tuscaloosa  69  40  68  46  73 /  90  10   0   0  40
Calera      68  40  67  48  73 / 100  10   0  10  40
Auburn      75  42  68  51  70 / 100  20   0  20  50
Montgomery  77  44  71  51  75 / 100  20   0  10  50
Troy        81  46  71  52  76 / 100  20   0  20  50

&&

.BMX WATCHES/WARNINGS/ADVISORIES/...
None.

&&

Hazardous weather outlook, Mar 28, 5:30 AM CDT, 2 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
530 AM CDT Sun Mar 28 2021

ALZ011>015-017>050-291330-
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-
530 AM CDT Sun Mar 28 2021

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

.DAY ONE...Outlook through Tonight.

Severe storms will continue to be possible through the afternoon
across portions of Central Alabama as a front slides southward.
Large hail and damaging winds will be the primary threats along with
localized flooding with any training that may develop. There could be
some increase in coverage of the stronger storms this afternoon in
the southeast through 4 PM.

Minor flooding will occur along portions of the Tombigbee, Cahaba,
Coosa, Locust Fork, and Black Warrior River Basins.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Minor flooding will continue along portions of the Tombigbee,
Cahaba, Coosa, Locust Fork, and Black Warrior River Basins through
this week.

A cold front will move through on Wednesday. At this time there is a
low end threat for strong winds and large hail with the passage of
the front.

A freeze is possible Friday morning for the northern half of Central
Alabama.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be needed
through this afternoon and again on Wednesday.

In the hours before

Special weather statement, Mar 28, 7:19 AM CDT, 1 hour 4 minutes before

Special Weather Statement
National Weather Service Birmingham AL
719 AM CDT Sun Mar 28 2021

ALZ020-281245-
Cherokee AL-
719 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CHEROKEE COUNTY UNTIL 745
AM CDT...

At 719 AM CDT, Doppler radar was tracking a strong thunderstorm over
Slackland, or 10 miles north of Hokes Bluff, moving east at 60 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Centre, Cedar Bluff, Centre Municipal Airport, Leesburg, Sand Rock,
Gaylesville, Tennala, Slackland, Cherokee Rock Village, Cornwall
Furnace Park, Western Weiss Lake, Eastern Weiss Lake, Moshat, Weiss
Dam, Fullerton, Yellow Creek Falls, Chesnut Bay Resort, Howells
Crossroads and Waterhouse.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3433 8547 3410 8543 3405 8577 3410 8580
      3412 8579 3413 8580 3411 8584 3425 8584
      3424 8581 3425 8581 3434 8547
TIME...MOT...LOC 1219Z 256DEG 53KT 3414 8587

05

Special weather statement, Mar 28, 7:41 AM CDT, 42 minutes before

Special Weather Statement
National Weather Service Birmingham AL
741 AM CDT Sun Mar 28 2021

ALZ025-034-035-281345-
Chilton AL-Bibb AL-Shelby AL-
741 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHILTON...SHELBY AND
BIBB COUNTIES UNTIL 845 AM CDT...

At 741 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Helena to near Eoline. Movement was east
at 55 mph.

Pea size hail and wind gusts up to 50 mph will be possible with these
storms.

Locations impacted include...
Alabaster, Pelham, Helena, Calera, Chelsea, Montevallo, Brent,
Columbiana, Centreville, Jemison, Wilsonville, Indian Springs
Village, Vincent, Thorsby, Harpersville, Westover, West Blocton,
Wilton, Gap Of The Mountain and American Village.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3301 8732 3309 8731 3313 8720 3316 8720
      3325 8705 3325 8698 3332 8689 3343 8638
      3339 8638 3336 8634 3334 8637 3329 8636
      3328 8643 3320 8646 3318 8650 3313 8646
      3306 8652 3289 8649 3293 8742 3300 8742
TIME...MOT...LOC 1241Z 257DEG 46KT 3327 8695 3301 8728

05

Special weather statement, Mar 28, 7:45 AM CDT, 38 minutes before

Special Weather Statement
National Weather Service Birmingham AL
745 AM CDT Sun Mar 28 2021

ALZ018>021-281315-
Calhoun AL-Etowah AL-Cleburne AL-Cherokee AL-
745 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CALHOUN...EAST
CENTRAL ETOWAH...NORTH CENTRAL CLEBURNE AND SOUTHERN CHEROKEE
COUNTIES UNTIL 815 AM CDT...

At 745 AM CDT, Doppler radar was tracking a strong thunderstorm near
Hokes Bluff, moving east at 60 mph.

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

Locations impacted include...
Piedmont, Hokes Bluff, Forney, Pleasant Gap, Ballplay, Ball Flat,
Coloma, Knightens Crossroads, Borden Springs, Reaves and Spring
Garden.

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.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3390 8539 3390 8589 3405 8589 3412 8543
TIME...MOT...LOC 1245Z 264DEG 51KT 3400 8581

05

Special weather statement, Mar 28, 8:05 AM CDT, 18 minutes before

Special Weather Statement
National Weather Service Birmingham AL
805 AM CDT Sun Mar 28 2021

ALZ019-021-027>029-281400-
Calhoun AL-Clay AL-Talladega AL-Randolph AL-Cleburne AL-
805 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR TALLADEGA...NORTHWESTERN
RANDOLPH...SOUTHEASTERN CALHOUN...SOUTHERN CLEBURNE AND CLAY COUNTIES
UNTIL 900 AM CDT...

At 805 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Mount Cheaha to near Childersburg.
Movement was east at 50 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Anniston, Oxford, Talladega, Sylacauga, Childersburg, Heflin,
Lineville, Ashland, Talladega Springs, Munford, Ranburne, Waldo,
Grant Town, Alpine, Mount Cheaha, Morrison Cross Roads, Barfield,
Winterboro, Anniston Regional Airport and Fayetteville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3310 8606 3310 8649 3313 8646 3317 8650
      3319 8650 3320 8646 3324 8646 3324 8644
      3326 8642 3328 8643 3327 8641 3329 8636
      3334 8637 3335 8634 3337 8635 3366 8572
      3363 8533 3348 8531
TIME...MOT...LOC 1305Z 266DEG 43KT 3352 8585 3332 8636

05

Special weather statement, Mar 28, 8:22 AM CDT, 1 minute before

Special Weather Statement
National Weather Service Birmingham AL
822 AM CDT Sun Mar 28 2021

ALZ036-281345-
Coosa AL-
822 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COOSA COUNTY UNTIL
845 AM CDT...

At 822 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Winterboro to near Calera. Movement was east at
40 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Weogufka, Stewartville, Unity, Parkdale, Marble Valley, Strickland
Crossroads, Lay Lake, Mitchell Lake and Paint Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3288 8648 3291 8649 3293 8651 3299 8651
      3300 8652 3306 8652 3307 8651 3309 8651
      3310 8649 3311 8604
TIME...MOT...LOC 1322Z 269DEG 36KT 3330 8619 3303 8680

05

Special weather statement, Mar 28, 8:23 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Birmingham AL
823 AM CDT Sun Mar 28 2021

ALZ033-281400-
Perry AL-
823 AM CDT Sun Mar 28 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PERRY COUNTY UNTIL
900 AM CDT...

At 823 AM CDT, Doppler radar was tracking a strong thunderstorm near
Marion, moving east at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Marion, Sprott and Judson College.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3272 8734 3277 8702 3273 8702 3269 8703
      3266 8703 3264 8705 3261 8705 3260 8704
      3258 8707 3262 8736
TIME...MOT...LOC 1323Z 272DEG 33KT 3267 8729

05

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 2:47 AM CDT	Severe Thunderstorm Warning	BMX	Marion	43 min
Mar 28, 3:25 AM CDT	Special Weather Statement	BMX	Winston	35 min
Mar 28, 3:47 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	58 min
Mar 28, 4:15 AM CDT	Special Weather Statement	BMX	Winston	45 min
Mar 28, 4:32 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker, Winston	47 min
Mar 28, 5:17 AM CDT	Special Weather Statement	BMX	Walker	43 min
Mar 28, 5:46 AM CDT	Special Weather Statement	BMX	Marshall	29 min
Mar 28, 6:01 AM CDT	Special Weather Statement	BMX	Tuscaloosa, Walker	44 min
Mar 28, 6:13 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	62 min
Mar 28, 6:27 AM CDT	Special Weather Statement	BMX	Jefferson, Tuscaloosa	63 min
Mar 28, 6:34 AM CDT	Special Weather Statement	BMX	DeKalb	26 min
Mar 28, 6:46 AM CDT	Special Weather Statement	BMX	Blount, Etowah	59 min
Mar 28, 6:59 AM CDT	Special Weather Statement	BMX	St. Clair, Shelby	61 min
Mar 28, 7:13 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	32 min
Mar 28, 7:19 AM CDT	Special Weather Statement	BMX	Cherokee	26 min
Mar 28, 7:37 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair, Talladega	38 min
Mar 28, 7:41 AM CDT	Special Weather Statement	BMX	Bibb, Shelby	64 min
Mar 28, 7:45 AM CDT	Special Weather Statement	BMX	Cherokee	30 min
Mar 28, 7:50 AM CDT	Severe Thunderstorm Warning	BMX	Shelby	40 min
Mar 28, 8:05 AM CDT	Special Weather Statement	BMX	Clay, Talladega	55 min
Mar 28, 8:22 AM CDT	Special Weather Statement	BMX	Coosa	23 min
Mar 28, 8:38 AM CDT	Special Weather Statement	BMX	Randolph	37 min
Mar 28, 9:40 AM CDT	Special Weather Statement	BMX	Clay	35 min
Mar 28, 9:44 AM CDT	River Flood Warning	BMX	Cherokee, Etowah, St. Clair	8 days
Mar 28, 10:03 AM CDT	Special Weather Statement	BMX	Randolph	42 min
Mar 28, 10:33 AM CDT	Special Weather Statement	BMX	Chambers	42 min
Mar 28, 12:38 PM CDT	River Flood Warning	BMX	Sumter	57 hr

Nearby

Special Weather Statements in Alabama, 2021 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.