Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 118, NWS Birmingham, AL

May 9, 2023Macon County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 9, 2023, 4:24 PM CDT for Macon County, Alabama. It was in force for 36 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: May 9, 2023, 4:24 PM CDT (21:24 UTC)
Expired: May 9, 2023, 5:00 PM CDT
In force: 36 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Macon County, AL

The radar

The Maxwell AFB radar (KMXX), 19 km from the middle of the area, began a volume at 21:23 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.4 hours before the alert went out and 156 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: 897 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 517 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 9, 3:58 PM CDT, 26 minutes earlier.

Area forecast discussion, May 9, 3:58 PM CDT, 26 minutes before

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Hazardous weather outlook, May 9, 3:12 AM CDT, 13 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
312 AM CDT Tue May 9 2023

ALZ011>015-017>050-101115-
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-
312 AM CDT Tue May 9 2023

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

.DAY ONE...Outlook through Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management is not
expected at this time.

In the hours before

Local storm report, May 9, 3:01 PM CDT, 1 hour 23 minutes before

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Local storm report, May 9, 3:09 PM CDT, 1 hour 15 minutes before

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Local storm report, May 9, 3:13 PM CDT, 1 hour 11 minutes before

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Local storm report, May 9, 3:20 PM CDT, 1 hour 4 minutes before

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Special weather statement, May 9, 3:29 PM CDT, 55 minutes before

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Special weather statement, May 9, 4:10 PM CDT, 14 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 11:42 AM CDT	Special Weather Statement	BMX	St. Clair	33 min
May 9, 12:13 PM CDT	Special Weather Statement	BMX	Talladega	32 min
May 9, 12:17 PM CDT	Severe Thunderstorm Warning	BMX	Talladega	43 min
May 9, 12:57 PM CDT	Severe Thunderstorm Warning	BMX	Talladega	29 min
May 9, 1:01 PM CDT	Special Weather Statement	BMX	Randolph	44 min
May 9, 1:26 PM CDT	Special Weather Statement	BMX	Talladega	34 min
May 9, 1:39 PM CDT	Special Weather Statement	BMX	Randolph	36 min
May 9, 1:54 PM CDT	Special Weather Statement	BMX	Talladega	36 min
May 9, 2:20 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Tallapoosa	40 min
May 9, 2:23 PM CDT	Special Weather Statement	BMX	Chambers	52 min
May 9, 2:41 PM CDT	Special Weather Statement	BMX	Coosa	34 min
May 9, 2:50 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Elmore, Tallapoosa	40 min
May 9, 2:53 PM CDT	Special Weather Statement	BMX	Elmore	52 min
May 9, 3:29 PM CDT	Special Weather Statement	BMX	Elmore, Lee, Macon	46 min
May 9, 4:10 PM CDT	Special Weather Statement	BMX	Bullock, Lee, Macon, Montgomery, Russell	65 min
May 9, 5:06 PM CDT	Special Weather Statement	BMX	Barbour	39 min
May 9, 5:42 PM CDT	Special Weather Statement	BMX	Barbour, Pike	33 min
May 9, 6:27 PM CDT	Special Weather Statement	BMX	Bibb	48 min
May 9, 6:46 PM CDT	Special Weather Statement	BMX	Bibb	29 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.