Alert archive / Alabama / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 37, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Mar 24, 2013, 3:23 PM CDT for DeKalb County, Jackson County, Alabama; Franklin County, Tennessee. 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 counties it named.
The facts
- Issued
- Mar 24, 2013, 3:23 PM CDT (20:23 UTC)
- Expired
- Mar 24, 2013, 4:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
Counties DeKalb County, AL, Jackson County, AL, Franklin County, TN
The radar
The Northeast Alabama radar (KHTX), 18 km from the middle of the area, began a volume at 20:23 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
Nashville Metro, TN (KBNA), launched 12:00Z, 8.4 hours before the alert went out and 159 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 465 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 24, 12:30 PM CDT, 2 hours 53 minutes earlier.
Area forecast discussion, Mar 24, 12:30 PM CDT, 2 hours 53 minutes before
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</html>Hazardous weather outlook, Mar 24, 12:58 PM CDT, 2 hours 25 minutes before
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Special weather statement, Mar 24, 3:11 PM CDT, 12 minutes before
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</html>The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 8:51 PM CDT | Special Weather Statement | HUN | Lawrence | 24 min |
| Mar 23, 9:17 PM CDT | Special Weather Statement | HUN | Madison | 28 min |
| Mar 23, 9:49 PM CDT | Special Weather Statement | HUN | Madison | 41 min |
| Mar 23, 9:51 PM CDT | Special Weather Statement | HUN | Cullman, Marshall | 39 min |
| Mar 23, 10:23 PM CDT | Special Weather Statement | HUN | Cullman | 52 min |
| Mar 24, 3:10 AM CDT | Wind Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 39 hr |
| Mar 24, 3:11 PM CDT | Special Weather Statement | HUN | Jackson | 49 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2013Severe Thunderstorm Warnings in Tennessee, 2013Every severe thunderstorm warning in 2013
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.