Alert archive / Alabama / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 26, NWS Huntsville, AL
NWS Huntsville, AL issued this severe thunderstorm warning at Mar 29, 2020, 12:45 AM CDT for Lauderdale County, Alabama. It was in force for 30 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 29, 2020, 12:45 AM CDT (05:45 UTC)
- Expired
- Mar 29, 2020, 1:15 AM CDT
- In force
- 30 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lauderdale County, AL
The radar
The Columbus AFB radar (KGWX), 128 km from the middle of the area, began a volume at 05:45 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 28, 9:58 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 5.8 hours before the alert went out and 167 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
- 251 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1430 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
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 28, 11:40 PM CDT, 1 hour 5 minutes earlier.
Area forecast discussion, Mar 28, 11:40 PM CDT, 1 hour 5 minutes before
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</html>Hazardous weather outlook, Mar 28, 1:27 PM CDT, 11 hours 18 minutes before
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Special weather statement, Mar 29, 12:03 AM CDT, 42 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1203 AM CDT Sun Mar 29 2020
ALZ001-002-290530-
Lauderdale AL-Colbert AL-
1203 AM CDT Sun Mar 29 2020
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN LAUDERDALE AND
NORTHWESTERN COLBERT COUNTIES UNTIL 1230 AM CDT...
At 1202 AM CDT, Doppler radar was tracking a strong thunderstorm near
Cherokee, or 11 miles southeast of J P Coleman State Park, moving
northeast at 55 mph.
Pea size hail and winds in excess of 30 mph will be possible with
this storm.
Locations impacted include...
Florence, Cherokee, Lexington, St. Florian, Underwood-Petersville,
Waterloo, Green Hill, Riverton, Wright and Oakland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3501 8800 3500 8727 3471 8808 3482 8811
3489 8810 3492 8814
TIME...MOT...LOC 0502Z 240DEG 49KT 3485 8799
25Special weather statement, Mar 29, 12:26 AM CDT, 19 minutes before
Special Weather Statement
National Weather Service Huntsville AL
1226 AM CDT Sun Mar 29 2020
ALZ001>003-290615-
Lauderdale AL-Franklin AL-Colbert AL-
1226 AM CDT Sun Mar 29 2020
...SIGNIFICANT WEATHER ADVISORY FOR LAUDERDALE...COLBERT AND FRANKLIN
COUNTIES UNTIL 115 AM CDT...
At 1225 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles north of Underwood-Petersville to near
Fairview. Movement was east at 45 mph.
Pea size hail and winds in excess of 40 mph will be possible with
these storms.
Locations impacted include...
Florence, Muscle Shoals, Russellville, Sheffield, Tuscumbia, Red Bay,
Rogersville, Killen, Cherokee and Littleville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 3461 8814 3499 8770 3501 8766 3500 8721
3494 8721 3480 8734 3480 8743 3476 8742
3468 8745 3431 8777 3432 8817
TIME...MOT...LOC 0525Z 252DEG 41KT 3496 8768 3433 8831
25The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 12:03 AM CDT | Special Weather Statement | HUN | Lauderdale | 27 min |
| Mar 29, 12:26 AM CDT | Special Weather Statement | HUN | Colbert, Franklin, Lauderdale | 49 min |
| Mar 29, 1:02 AM CDT | Severe Thunderstorm Warning | HUN | Colbert, Franklin | 28 min |
| Mar 29, 1:37 AM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale, Lawrence, Limestone | 38 min |
| Mar 29, 2:20 AM CDT | Severe Thunderstorm Warning | HUN | Limestone, Madison | 25 min |
| Mar 29, 2:52 AM CDT | Severe Thunderstorm Warning | HUN | Cullman, Lawrence, Limestone, Madison, Marshall, Morgan | 38 min |
| Mar 29, 3:20 AM CDT | Special Weather Statement | HUN | Jackson | 40 min |
| Mar 29, 3:30 AM CDT | Special Weather Statement | HUN | Marshall | 45 min |
| Mar 29, 1:25 AM CDT | Special Weather Statement | HUN | Lincoln | 20 min |
| Mar 29, 1:33 AM CDT | Severe Thunderstorm Warning | HUN | Lincoln, Moore | 27 min |
| Mar 29, 2:42 AM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lincoln, Moore | 33 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; radar from the NEXRAD Level II archive.