Alert archive / Alabama / Tornado Watches in 2023
Tornado Watch 51
The Storm Prediction Center issued this tornado watch at Mar 1, 2023, 7:36 PM CST for 16 counties in Alabama; 11 counties in Tennessee. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2023, 7:36 PM CST (01:36 UTC)
- Expired
- Mar 2, 2023, 1:16 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 27 counties
Colbert County, AL, Cullman County, AL, DeKalb County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Walker County, AL, Winston County, AL, Bedford County, TN, Franklin County, TN, Giles County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Perry County, TN, Wayne County, TN
The radar
The Northeast Alabama radar (KHTX), 104 km from the middle of the area, began a volume at 01:37 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 7:53 PM CST | Tornado Warning | HUN | Colbert, Lauderdale | 37 min |
| Mar 1, 7:58 PM CST | Tornado Warning | HUN | Colbert, Franklin | 32 min |
| Mar 1, 8:21 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale, Lawrence | 1 min |
| Mar 1, 8:27 PM CST | Tornado Warning | HUN | Colbert, Franklin, Lawrence | 33 min |
| Mar 1, 8:28 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale, Lawrence | 32 min |
| Mar 1, 8:54 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lauderdale, Lawrence, Limestone, Morgan | 36 min |
| Mar 1, 9:27 PM CST | Tornado Warning | HUN | Lawrence, Limestone, Madison, Morgan | 48 min |
| Mar 1, 9:42 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Franklin | 33 min |
| Mar 1, 9:46 PM CST | Severe Thunderstorm Warning | HUN | Limestone, Madison | 29 min |
| Mar 1, 9:49 PM CST | Severe Thunderstorm Warning | BMX | Marion | 41 min |
| Mar 1, 9:54 PM CST | Tornado Warning | BMX | Marion | 40 min |
| Mar 1, 9:57 PM CST | Tornado Warning | HUN | Franklin | 33 min |
| Mar 1, 10:11 PM CST | Severe Thunderstorm Warning | HUN | Colbert, Franklin, Lawrence | 49 min |
| Mar 1, 10:11 PM CST | Tornado Warning | HUN | Jackson, Limestone, Madison | 21 min |
| Mar 1, 10:31 PM CST | Flash Flood Warning | HUN | Colbert, Franklin, Lawrence | 5 hr |
| Mar 1, 10:31 PM CST | Severe Thunderstorm Warning | HUN | Jackson, Madison | 29 min |
| Mar 1, 10:33 PM CST | Severe Thunderstorm Warning | HUN | Jackson, Madison | 27 min |
| Mar 1, 10:34 PM CST | Severe Thunderstorm Warning | HUN | Madison | 26 min |
| Mar 1, 10:35 PM CST | Tornado Warning | HUN | Madison | 14 min |
| Mar 1, 10:36 PM CST | Flash Flood Warning | HUN | Lawrence, Limestone, Madison | 5 hr |
| Mar 1, 10:58 PM CST | Flash Flood Warning | HUN | Limestone, Madison | 5 hr |
| Mar 1, 11:00 PM CST | Severe Thunderstorm Warning | HUN | Jackson | 30 min |
| Mar 1, 11:41 PM CST | Severe Thunderstorm Warning | HUN | Cullman | 19 min |
| Mar 2, 12:04 AM CST | Flash Flood Warning | HUN | Jackson, Madison | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 1.6 hours before the alert went out and 158 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
- 331 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1034 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 222 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 6:21 PM CST | Mesoscale Discussion | SPC | Colbert, Franklin, Lamar, Lauderdale, Marion | 114 min |
| Mar 1, 10:09 PM CST | Mesoscale Discussion | SPC | Blount, Cherokee, Cullman, DeKalb, Etowah, Fayette and 10 more | 96 min |
| Mar 1, 11:22 PM CST | Tornado Watch | SPC | Bradley, Hamilton, Marion, Polk, Sequatchie | 3 hr |
| Mar 2, 1:40 AM CST | Mesoscale Discussion | SPC | Bradley, McMinn, Monroe, Polk | 65 min |
Nearby
Tornado Watches in Alabama, 2023Tornado Watches in Tennessee, 2023Every tornado watch 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.