Alert archive / Alabama / Tornado Watches in 2025

Tornado Watch 42

March 15, 202517 counties in Alabama; 16 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Mar 15, 2025, 2:34 AM CDT for 17 counties in Alabama; 16 counties in Tennessee. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Mar 15, 2025, 2:34 AM CDT (07:34 UTC)
Expired
Mar 15, 2025, 6:38 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 33 counties

Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Morgan County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Bedford County, TN, Cannon County, TN, Coffee County, TN, Franklin County, TN, Giles County, TN, Hickman County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Perry County, TN, Rutherford County, TN, Wayne County, TN, Williamson County, TN

The radar

The Northeast Alabama radar (KHTX), 80 km from the middle of the area, began a volume at 07:36 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
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
70%

Warnings issued inside it

13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 15, 2:45 AM CDTTornado WarningBMXMarion32 min
Mar 15, 2:48 AM CDTTornado WarningHUNFranklin32 min
Mar 15, 3:17 AM CDTSevere Thunderstorm WarningBMXMarion43 min
Mar 15, 3:19 AM CDTSevere Thunderstorm WarningHUNFranklin56 min
Mar 15, 3:38 AM CDTSevere Thunderstorm WarningBMXPickens, Tuscaloosa52 min
Mar 15, 3:49 AM CDTSevere Thunderstorm WarningHUNColbert, Lauderdale, Lawrence, Limestone, Morgan56 min
Mar 15, 4:01 AM CDTSevere Thunderstorm WarningBMXFayette, Tuscaloosa, Walker29 min
Mar 15, 4:19 AM CDTSevere Thunderstorm WarningBMXWalker26 min
Mar 15, 4:29 AM CDTSevere Thunderstorm WarningHUNCullman, Madison, Marshall, Morgan61 min
Mar 15, 4:43 AM CDTSevere Thunderstorm WarningHUNLawrence, Limestone, Madison, Morgan11 min
Mar 15, 5:27 AM CDTSevere Thunderstorm WarningHUNCullman, Marshall35 min
Mar 15, 5:58 AM CDTSevere Thunderstorm WarningHUNJackson, Madison, Marshall, Morgan28 min
Mar 15, 6:25 AM CDTFlash Flood WarningHUNCullman110 min

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, 7.6 hours before the alert went out and 161 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2025-03-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2025-03-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2003 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
287 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 15, 2:03 AM CDTMesoscale DiscussionSPCColbert, Cullman, Fayette, Franklin, Greene, Hale and 12 more87 min
Mar 15, 11:19 AM CDTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Blount, Butler, Calhoun and 38 more86 min
Mar 15, 12:25 PM CDTTornado Watch PDSSPCAutauga, Baldwin, Bibb, Blount, Butler, Calhoun and 41 more9 hr
Mar 15, 1:16 PM CDTMesoscale DiscussionSPCColbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 4 more89 min
Mar 15, 1:31 PM CDTMesoscale DiscussionSPCBibb, Choctaw, Dallas, Fayette, Greene, Hale and 5 more119 min
Mar 15, 2:07 PM CDTMesoscale DiscussionSPCSumter83 min
Mar 15, 3:29 PM CDTMesoscale DiscussionSPCBibb, Choctaw, Clarke, Dallas, Greene, Hale and 8 more2 hr
Mar 15, 3:40 PM CDTMesoscale DiscussionSPCBaldwin, Escambia, Mobile95 min
Mar 15, 6:18 PM CDTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 17 more3 hr
Mar 15, 6:21 PM CDTMesoscale DiscussionSPCBlount, Cherokee, Colbert, Cullman, DeKalb, Etowah and 9 more114 min
Mar 14, 7:34 PM CDTTornado Watch PDSSPCBenton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more10 hr
Mar 14, 10:20 PM CDTMesoscale DiscussionSPCLake115 min
Mar 14, 11:50 PM CDTMesoscale DiscussionSPCBenton, Carroll, Chester, Crockett, Decatur, Dyer and 15 more115 min
Mar 15, 5:58 AM CDTTornado WatchSPCFayette, Hardeman, Hardin, McNairy7 hr
Mar 15, 8:04 AM CDTMesoscale DiscussionSPCFayette, Hardeman, McNairy86 min
Mar 15, 9:25 AM CDTMesoscale DiscussionSPCChester, Fayette, Hardeman, Hardin, McNairy, Shelby95 min
Mar 15, 12:30 PM CDTMesoscale DiscussionSPCBedford, Bledsoe, Cannon, Coffee, Cumberland, Davidson and 31 more60 min
Mar 15, 12:51 PM CDTTornado WatchSPCBedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 31 more8 hr
Mar 15, 2:15 PM CDTMesoscale DiscussionSPCBedford, Bledsoe, Cannon, Coffee, Cumberland, Davidson and 21 more90 min
Mar 15, 3:56 PM CDTMesoscale DiscussionSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 29 more94 min
Mar 15, 4:58 PM CDTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Hamilton and 12 more7 hr

Nearby

Tornado Watches in Alabama, 2025Tornado Watches in Tennessee, 2025Every tornado watch in 2025

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.