Alert archive / Alabama / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 67, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Jun 22, 2020, 5:11 PM CDT for DeKalb County, Jackson County, Marshall County, Alabama. It was in force for 34 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
- Jun 22, 2020, 5:11 PM CDT (22:11 UTC)
- Expired
- Jun 22, 2020, 5:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties DeKalb County, AL, Jackson County, AL, Marshall County, AL
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 10.2 hours before the alert went out and 166 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
- 132 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1277 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 96 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 Jun 21, 6:04 PM CDT, 23 hours 7 minutes earlier.
Area forecast discussion, Jun 21, 6:04 PM CDT, 23 hours 7 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 |
|---|---|---|---|---|
| Jun 22, 3:27 PM CDT | Special Weather Statement | HUN | Franklin | 33 min |
| Jun 22, 3:40 PM CDT | Special Weather Statement | HUN | Cullman | 50 min |
| Jun 22, 3:54 PM CDT | Special Weather Statement | HUN | Limestone | 51 min |
| Jun 22, 4:00 PM CDT | Special Weather Statement | HUN | Colbert, Franklin, Lawrence | 45 min |
| Jun 22, 4:40 PM CDT | Special Weather Statement | HUN | Lauderdale, Lawrence | 50 min |
| Jun 22, 4:46 PM CDT | Special Weather Statement | HUN | Marshall | 29 min |
| Jun 22, 4:51 PM CDT | Special Weather Statement | HUN | Morgan | 24 min |
| Jun 22, 5:27 PM CDT | Special Weather Statement | HUN | Limestone, Madison | 48 min |
| Jun 22, 5:42 PM CDT | Special Weather Statement | HUN | Jackson | 33 min |
| Jun 22, 6:05 PM CDT | Special Weather Statement | HUN | Franklin | 25 min |
| Jun 22, 6:37 PM CDT | Special Weather Statement | HUN | Franklin | 23 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2020Every severe thunderstorm warning in 2020
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.