Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 307, NWS Birmingham, AL

August 3, 2023Etowah County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 3, 2023, 2:03 PM CDT for Etowah County, Alabama. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 3, 2023, 2:03 PM CDT (19:03 UTC)
Expired: Aug 3, 2023, 3:00 PM CDT
In force: 57 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 99 km from the middle of the area, began a volume at 19:06 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, 7.1 hours before the alert went out and 118 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: 554 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 3, 12:57 PM CDT, 1 hour 6 minutes earlier.

Area forecast discussion, Aug 3, 12:57 PM CDT, 1 hour 6 minutes before

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Hazardous weather outlook, Aug 3, 4:22 AM CDT, 9 hours 41 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
422 AM CDT Thu Aug 3 2023

ALZ011>015-017>050-041230-
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-
422 AM CDT Thu Aug 3 2023

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

.DAY ONE...Outlook through Tonight.

Severe thunderstorms are possible between 12 PM and 9 PM today
across much of Central Alabama, with the relatively highest chances
across far northern and northeastern portions. Damaging winds up to
60 mph will be possible.

Multiple rounds of showers and storms this afternoon through the
overnight hours may cause isolated flash flooding, especially across
northeastern portions of Central Alabama.

Heat indices will range from 105 to 109 degrees across the western
half of Central Alabama today ahead of any thunderstorms.

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

Isolated flash flooding will be possible on Friday, especially in
northeastern portions of Central Alabama during the morning hours.

Severe thunderstorms are possible Friday between 10 AM and 7 PM,
mainly across the southwestern half of Central Alabama. Damaging
winds up to 60 mph will be possible.

Heat indices will range from 105 to 109 degrees across southwestern
portions of Central Alabama Friday afternoon ahead of any
thunderstorms.

Heat indices will reach or exceed 105 degrees at times across much
of Central Alabama Saturday through Monday. At this time, the
highest heat indices are forecast Saturday and Sunday.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management may be needed
this afternoon and tonight and again on Friday.

In the hours before

Special weather statement, Aug 3, 1:15 PM CDT, 48 minutes before

Special Weather Statement
National Weather Service Birmingham AL
115 PM CDT Thu Aug 3 2023

ALZ014-031900-
Winston AL-
115 PM CDT Thu Aug 3 2023

...A strong thunderstorm will impact portions of northeastern Winston
County through 200 PM CDT...

At 115 PM CDT, Doppler radar was tracking a strong thunderstorm near
Addison, or near Arley, moving southeast at 30 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Arley, Double Springs, Addison, Houston Recreational Area, Nesmith,
Smith Lake, Brushy Lake, Helicon, Inmanfield, Sardis, Corinth Rec
Area, Falls City, Moreland, Winston Free State Barn, Houston, Mill
Branch, Maple Branch, Hullett Branch, Winston County Airport and Cane
Creek.

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 3399 8711 3399 8715 3400 8717 3400 8719
      3399 8720 3417 8757 3430 8728 3430 8711
TIME...MOT...LOC 1815Z 299DEG 26KT 3417 8725

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

56

Special weather statement, Aug 3, 1:37 PM CDT, 26 minutes before

Special Weather Statement
National Weather Service Birmingham AL
137 PM CDT Thu Aug 3 2023

ALZ017-031930-
Blount AL-
137 PM CDT Thu Aug 3 2023

...Strong thunderstorms will impact portions of Blount County through
230 PM CDT...

At 136 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Strawberry to near Falls City. Movement
was southeast at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Oneonta, Blountsville, Cleveland, Dallas, Locust Fork, Altoona,
Snead, Susan Moore, Walnut Grove, Trafford, Allgood, Fairview,
Hayden, Nectar, Rosa, County Line, McLarty, Bangor, Strawberry and
Blount Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3410 8630 3394 8637 3393 8633 3392 8634
      3380 8653 3380 8657 3376 8659 3384 8676
      3384 8688 3383 8696 3387 8696 3387 8692
      3392 8692 3397 8677 3405 8668 3409 8669
      3408 8668 3412 8660 3425 8651 3426 8645
TIME...MOT...LOC 1836Z 302DEG 25KT 3429 8650 3403 8725

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

56

Special weather statement, Aug 3, 1:53 PM CDT, 10 minutes before

Special Weather Statement
National Weather Service Birmingham AL
153 PM CDT Thu Aug 3 2023

ALZ011>013-031930-
Fayette AL-Marion AL-Lamar AL-
153 PM CDT Thu Aug 3 2023

...Strong thunderstorms will impact portions of southern Marion,
northwestern Fayette and northern Lamar Counties through 230 PM
CDT...

At 153 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Lake Buttahatchee to near Detroit. Movement was
southeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Hamilton, Winfield, Sulligent, Guin, Brilliant, Glen Allen, Detroit,
Beaverton, Gu-
Win, Lamar County Airport, Lake Buttahatchee, Crews, Twin, Gattman,
Tucker, Henson Springs, Wayside, Rankin Fite Airport, Pine Springs
and Marion County Public Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 3413 8820 3417 8764 3387 8764 3381 8824
TIME...MOT...LOC 1853Z 326DEG 21KT 3413 8771 3409 8821

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

56

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 9:29 PM CDT	Heat Advisory	BMX	Autauga, Barbour, Bibb, Bullock, Chilton, Coosa and 21 more	46 hr
Aug 3, 4:11 AM CDT	Flood Watch	BMX	Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 21 more	36 hr
Aug 3, 1:15 PM CDT	Special Weather Statement	BMX	Winston	45 min
Aug 3, 1:37 PM CDT	Special Weather Statement	BMX	Blount	53 min
Aug 3, 1:43 PM CDT	Severe Thunderstorm Warning	BMX	Blount	62 min
Aug 3, 1:53 PM CDT	Special Weather Statement	BMX	Marion	37 min
Aug 3, 2:08 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	52 min
Aug 3, 2:11 PM CDT	Special Weather Statement	BMX	St. Clair	64 min
Aug 3, 2:21 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Walker	54 min
Aug 3, 2:24 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	66 min
Aug 3, 2:27 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	63 min
Aug 3, 3:01 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Talladega, Tuscaloosa	74 min
Aug 3, 3:03 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	57 min
Aug 3, 3:34 PM CDT	Special Weather Statement	BMX	Clay, Randolph	56 min
Aug 3, 3:52 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Clay, Coosa, Hale, Shelby and 3 more	68 min
Aug 3, 4:09 PM CDT	Special Weather Statement	BMX	Pickens	51 min
Aug 3, 4:35 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	55 min
Aug 3, 4:40 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Elmore	65 min
Aug 3, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Coosa, Tallapoosa	69 min
Aug 3, 5:00 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Sumter	60 min
Aug 3, 5:10 PM CDT	Severe Thunderstorm Warning	BMX	Lee	80 min
Aug 3, 5:28 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Montgomery	62 min
Aug 3, 5:30 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	30 min
Aug 3, 5:57 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Macon, Russell	53 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023 Every severe thunderstorm warning in 2023

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.