Alert archive / Alabama / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 12, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Feb 5, 2020, 10:55 AM CST for DeKalb County, Jackson County, Alabama. It was in force for 20 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
- Feb 5, 2020, 10:55 AM CST (16:55 UTC)
- Expired
- Feb 5, 2020, 11:15 AM CST
- In force
- 20 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties DeKalb County, AL, Jackson County, AL
The radar
The Northeast Alabama radar (KHTX), 38 km from the middle of the area, began a volume at 16:58 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, 4.9 hours before the alert went out and 179 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
- 125 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 669 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 274 m²/s²
- 0-3 km storm-relative helicity
- 280 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
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 Feb 5, 10:49 AM CST, 6 minutes earlier.
Area forecast discussion, Feb 5, 10:49 AM CST, 6 minutes before
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Hazardous Weather Outlook National Weather Service Huntsville AL 420 AM CST Wed Feb 5 2020 ALZ001>010-016-TNZ076-096-097-061000- Lauderdale-Colbert-Franklin AL-Lawrence-Limestone-Madison-Morgan- Marshall-Jackson-DeKalb-Cullman-Moore-Lincoln-Franklin TN- 420 AM CST Wed Feb 5 2020 This Hazardous Weather Outlook is for north Alabama and portions of southern middle Tennessee. .DAY ONE...Today and Tonight... Scattered embedded thunderstorms within numerous to widespread showers are expected later today into this evening. A few of these storms could be severe and will be capable of damaging winds along with hail and a few tornadoes. The threat for severe weather will be from late this afternoon through the late evening. In addition, locally heavy downpours in a short period of time could lead to a few instances of flash flooding. Resulting runoff may also result in minor flooding of area rivers and streams. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday... No hazardous weather is expected at this time. .SPOTTER CALL TO ACTION STATEMENT... Activation of storm spotters and emergency management personnel is possible later today into this evening.
In the hours before
Special weather statement, Feb 5, 9:08 AM CST, 1 hour 47 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 |
|---|---|---|---|---|
| Feb 5, 6:44 AM CST | Special Weather Statement | HUN | Cullman | 31 min |
| Feb 5, 8:19 AM CST | Special Weather Statement | HUN | Madison, Morgan | 26 min |
| Feb 5, 8:38 AM CST | Special Weather Statement | HUN | Morgan | 37 min |
| Feb 5, 8:45 AM CST | Flash Flood Watch | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 26 hr |
| Feb 5, 9:08 AM CST | Special Weather Statement | HUN | Madison, Morgan | 52 min |
| Feb 5, 9:53 AM CST | Special Weather Statement | HUN | Jackson | 52 min |
| Feb 5, 10:09 AM CST | Special Weather Statement | HUN | Madison | 36 min |
| Feb 5, 10:23 AM CST | Special Weather Statement | HUN | Madison | 22 min |
| Feb 5, 10:32 AM CST | Special Weather Statement | HUN | Colbert, Franklin | 43 min |
| Feb 5, 10:39 AM CST | Areal Flood Warning | HUN | Jackson, Madison | 12 hr |
| Feb 5, 10:52 AM CST | Special Weather Statement | HUN | Jackson | 38 min |
| Feb 5, 10:55 AM CST | River Flood Warning | HUN | Madison | 50 hr |
| Feb 5, 11:00 AM CST | River Flood Warning | HUN | Lawrence | 62 hr |
| Feb 5, 11:11 AM CST | Special Weather Statement | HUN | Limestone | 49 min |
| Feb 5, 11:18 AM CST | Special Weather Statement | HUN | Lawrence | 42 min |
| Feb 5, 11:53 AM CST | Areal Flood Warning | HUN | Madison | 6 hr |
| Feb 5, 11:57 AM CST | Special Weather Statement | HUN | Limestone | 48 min |
| Feb 5, 12:00 PM CST | Special Weather Statement | HUN | Limestone | 45 min |
| Feb 5, 1:53 PM CST | Areal Flood Warning | HUN | Franklin | 6 hr |
| Feb 5, 4:53 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lauderdale | 52 min |
| Feb 5, 4:55 PM CST | Special Weather Statement | HUN | Franklin | 50 min |
| Feb 5, 5:08 PM CST | Tornado Warning | HUN | Colbert, Lauderdale | 37 min |
| Feb 5, 5:41 PM CST | Special Weather Statement | HUN | Colbert, Lauderdale, Lawrence | 49 min |
| Feb 5, 5:45 PM CST | Areal Flood Warning | HUN | Madison | 4 hr |
| Feb 5, 5:55 PM CST | Areal Flood Warning | HUN | Colbert, Franklin, Lauderdale, Lawrence | 9 hr |
| Feb 5, 12:43 PM CST | Special Weather Statement | HUN | Franklin, Moore | 47 min |
| Feb 5, 1:01 PM CST | Special Weather Statement | HUN | Franklin | 29 min |
| Feb 5, 1:27 PM CST | Special Weather Statement | HUN | Franklin | 33 min |
| Feb 5, 2:02 PM CST | Areal Flood Warning | HUN | Moore | 6 hr |
| Feb 5, 3:08 PM CST | River Flood Warning | HUN | Franklin, Lincoln | 46 hr |
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; radar from the NEXRAD Level II archive.