Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 46, NWS Birmingham, AL

March 3, 2023Calhoun County, Cherokee County, Cleburne County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 3, 2023, 12:57 PM CST for Calhoun County, Cherokee County, Cleburne County, Alabama. It was in force for 45 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
Mar 3, 2023, 12:57 PM CST (18:57 UTC)
Expired
Mar 3, 2023, 1:42 PM CST
In force
45 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Calhoun County, AL, Cherokee County, AL, Cleburne County, AL

The radar

The Atlanta radar (KFFC), 115 km from the middle of the area, began a volume at 19:00 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 watch it was issued in

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

IssuedProductOfficeLasted
Mar 3, 10:34 AM CSTTornado WatchSPC5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.0 hours before the alert went out and 120 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, Peachtre/Fal Fld, GA at 12:00Z on 2023-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Peachtre/Fal Fld, GA at 12:00Z on 2023-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 475 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
7 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
521 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
475 m²/s²
0-3 km storm-relative helicity
638 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 Mar 3, 12:37 PM CST, 20 minutes earlier.

Area forecast discussion, Mar 3, 12:37 PM CST, 20 minutes before
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Hazardous weather outlook, Mar 3, 4:05 AM CST, 8 hours 52 minutes before
Hazardous Weather Outlook
National Weather Service Birmingham AL
405 AM CST Fri Mar 3 2023

ALZ011>015-017>050-041315-
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-
405 AM CST Fri Mar 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 across all of Central Alabama
through this afternoon. Threats include tornadoes and damaging winds
up to 80 mph.

Non thunderstorm wind gusts up to 50 mph are possible through this
evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and Emergency Management may be needed
on Friday.

In the hours before

Local storm report, Mar 3, 12:15 PM CST, 42 minutes before
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Local storm report, Mar 3, 12:17 PM CST, 40 minutes before
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Local storm report, Mar 3, 12:26 PM CST, 31 minutes before
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Local storm report, Mar 3, 12:34 PM CST, 23 minutes before
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Local storm report, Mar 3, 12:44 PM CST, 13 minutes before
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Local storm report, Mar 3, 12:46 PM CST, 11 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 3, 9:29 AM CSTSevere Thunderstorm WarningBMXFayette, Lamar, Marion76 min
Mar 3, 10:11 AM CSTSevere Thunderstorm WarningBMXPickens64 min
Mar 3, 10:30 AM CSTSevere Thunderstorm WarningBMXFayette, Marion, Walker, Winston75 min
Mar 3, 10:51 AM CSTSevere Thunderstorm WarningBMXTuscaloosa57 min
Mar 3, 11:16 AM CSTSevere Thunderstorm WarningBMXWalker44 min
Mar 3, 11:31 AM CSTSevere Thunderstorm WarningBMXBibb, Blount, Hale, Jefferson, Tuscaloosa74 min
Mar 3, 12:05 PM CSTSevere Thunderstorm WarningBMXEtowah, St. Clair, Shelby74 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023Every 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.