Alert archive / Alabama / Tornado Watches in 2016
Tornado Watch 72
The Storm Prediction Center issued this tornado watch at Mar 31, 2016, 5:58 PM CDT for 39 counties in Alabama; 14 counties in Tennessee. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2016, 5:58 PM CDT (22:58 UTC)
- Expired
- Apr 1, 2016, 1:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 53 counties
Autauga County, AL, Bibb County, AL, Blount County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Colbert County, AL, Coosa County, AL, Cullman County, AL, Dallas County, AL, DeKalb County, AL, Elmore County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Lowndes County, AL, Madison County, AL, Marengo County, AL, Marion County, AL, Marshall County, AL, Montgomery County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL, Winston County, AL, Bedford County, TN, Cannon County, TN, Coffee County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Lawrence County, TN, Lincoln County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Rutherford County, TN, Warren County, TN, Wayne County, TN
The radar
The Columbus AFB radar (KGWX), 97 km from the middle of the area, began a volume at 22:58 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.
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
- 20%
- Ten or more severe wind reports
- 70%
- 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
- 5%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
48 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 6:06 PM CDT | Tornado Warning | MOB | Choctaw | 24 min |
| Mar 31, 6:06 PM CDT | Severe Thunderstorm Warning | OHX | Bedford, Marshall, Rutherford | 39 min |
| Mar 31, 6:12 PM CDT | Severe Thunderstorm Warning | BMX | Lamar, Pickens | 63 min |
| Mar 31, 6:14 PM CDT | Tornado Warning | OHX | Giles, Lawrence | 31 min |
| Mar 31, 6:15 PM CDT | Tornado Warning | MOB | Choctaw, Clarke | 45 min |
| Mar 31, 6:21 PM CDT | Severe Thunderstorm Warning | HUN | Lauderdale, Limestone | 24 min |
| Mar 31, 6:22 PM CDT | Tornado Warning | BMX | Lamar, Pickens | 50 min |
| Mar 31, 6:33 PM CDT | Severe Thunderstorm Warning | BMX | Marengo | 57 min |
| Mar 31, 6:34 PM CDT | Tornado Warning | HUN | Lauderdale, Limestone | 26 min |
| Mar 31, 6:44 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, DeKalb, Warren, Wilson | 31 min |
| Mar 31, 6:47 PM CDT | Tornado Warning | OHX | Giles, Marshall | 28 min |
| Mar 31, 6:53 PM CDT | Tornado Warning | HUN | Lauderdale, Limestone, Madison | 37 min |
| Mar 31, 6:58 PM CDT | Tornado Warning | BMX | Fayette | 46 min |
| Mar 31, 7:02 PM CDT | Tornado Warning | BMX | Fayette | 43 min |
| Mar 31, 7:08 PM CDT | Tornado Warning | OHX | Giles | 22 min |
| Mar 31, 7:17 PM CDT | Tornado Warning | HUN | Madison | 28 min |
| Mar 31, 7:22 PM CDT | Severe Thunderstorm Warning | BMX | Winston | 9 min |
| Mar 31, 7:22 PM CDT | Severe Thunderstorm Warning | OHX | Lawrence | 23 min |
| Mar 31, 7:25 PM CDT | Tornado Warning | OHX | Giles | 35 min |
| Mar 31, 7:29 PM CDT | Tornado Warning | BMX | Marion, Walker | 46 min |
| Mar 31, 7:30 PM CDT | Tornado Warning | HUN | Limestone | 30 min |
| Mar 31, 7:31 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence | 29 min |
| Mar 31, 7:34 PM CDT | Severe Thunderstorm Warning | BMX | Sumter | 41 min |
| Mar 31, 7:43 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lincoln, Moore | 32 min |
| Mar 31, 7:44 PM CDT | Severe Thunderstorm Warning | OHX | Giles, Lawrence | 31 min |
| Mar 31, 7:46 PM CDT | Tornado Warning | OHX | Giles, Lawrence | 29 min |
| Mar 31, 7:55 PM CDT | Severe Thunderstorm Warning | HUN | Lawrence, Limestone, Morgan | 23 min |
| Mar 31, 7:56 PM CDT | Severe Thunderstorm Warning | BMX | Greene, Pickens | 49 min |
| Mar 31, 7:58 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 13 min |
| Mar 31, 7:59 PM CDT | Tornado Warning | BMX | Fayette, Walker | 46 min |
| Mar 31, 8:05 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 55 min |
| Mar 31, 8:06 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 24 min |
| Mar 31, 8:12 PM CDT | Severe Thunderstorm Warning | OHX | Giles, Lawrence | 33 min |
| Mar 31, 8:24 PM CDT | Severe Thunderstorm Warning | BMX | Hale | 51 min |
| Mar 31, 8:28 PM CDT | Flash Flood Warning | OHX | Giles, Lawrence, Wayne | 3 hr |
| Mar 31, 8:35 PM CDT | Tornado Warning | HUN | Lawrence, Morgan | 25 min |
| Mar 31, 8:55 PM CDT | Tornado Warning | HUN | Limestone, Madison, Morgan | 35 min |
| Mar 31, 8:55 PM CDT | Flash Flood Warning | HUN | Franklin, Lincoln, Moore | 3 hr |
| Mar 31, 9:05 PM CDT | Severe Thunderstorm Warning | OHX | Grundy | 25 min |
| Mar 31, 9:17 PM CDT | Tornado Warning | BMX | Blount, Jefferson | 32 min |
| Mar 31, 9:18 PM CDT | Severe Thunderstorm Warning | HUN | Lincoln, Moore | 27 min |
| Mar 31, 9:20 PM CDT | Severe Thunderstorm Warning | MOB | Choctaw | 25 min |
| Mar 31, 9:24 PM CDT | Tornado Warning | HUN | Madison | 23 min |
| Mar 31, 9:35 PM CDT | Tornado Warning | HUN | Madison | 12 min |
| Mar 31, 9:39 PM CDT | Severe Thunderstorm Warning | HUN | Franklin, Lincoln | 36 min |
| Mar 31, 10:00 PM CDT | Tornado Warning | HUN | Franklin | 30 min |
| Mar 31, 10:42 PM CDT | Flash Flood Warning | BMX | Autauga, Dallas, Elmore, Lowndes, Montgomery | 3 hr |
| Mar 31, 11:17 PM CDT | Severe Thunderstorm Warning | BMX | Elmore, Macon, Montgomery, Tallapoosa | 43 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
Birmingham, AL (KBMX), launched 12:00Z, 11.0 hours before the alert went out and 101 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 441 m²/s²
- 0-3 km storm-relative helicity
- 538 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
182 WWUS20 KWNS 312257 SEL2 SPC WW 312257 ALZ000-TNZ000-010600- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 72 NWS STORM PREDICTION CENTER NORMAN OK 600 PM CDT THU MAR 31 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WEST CENTRAL THROUGH NORTHERN ALABAMA SOUTHERN MIDDLE TENNESSEE * EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 600 PM UNTIL 100 AM CDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...THUNDERSTORMS...INCLUDING A FEW SUPERCELLS CAPABLE OF LARGE HAIL...LOCALLY DAMAGING WIND...AND TORNADOES...EXPECTED TO MOVE / DEVELOP GENERALLY EAST-NORTHEAST ACROSS WATCH AREA THROUGH LATE TONIGHT / EARLY FRIDAY. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH OF HUNTSVILLE ALABAMA TO 65 MILES SOUTH SOUTHWEST OF SELMA ALABAMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && OTHER WATCH INFORMATION...CONTINUE...WW 69...WW 70...WW 71... AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 25035. ...CORFIDI
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 7:47 AM CDT | Mesoscale Discussion | SPC | Washington | 58 min |
| Mar 31, 8:37 AM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more | 53 min |
| Mar 31, 8:43 AM CDT | Tornado Watch | SPC | Baldwin, Clarke, Conecuh, Covington, Escambia, Mobile and 2 more | 5 hr |
| Mar 31, 11:29 AM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 5 more | 2 hr |
| Mar 31, 1:32 PM CDT | Mesoscale Discussion | SPC | Baldwin, Covington, Escambia, Geneva | 58 min |
| Mar 31, 4:47 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Chilton, Choctaw, Clarke, Colbert and 19 more | 58 min |
| Mar 31, 6:52 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Choctaw, Colbert, Cullman, Dallas and 22 more | 53 min |
| Mar 31, 10:26 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Chester, Crockett, Dyer, Fayette and 12 more | 3 hr |
| Mar 31, 10:58 AM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Chester, Crockett, Dyer, Fayette and 12 more | 5 hr |
| Mar 31, 2:14 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Crockett, Decatur and 23 more | 91 min |
| Mar 31, 2:35 PM CDT | Tornado Watch | SPC | Chester, Decatur, Fayette, Hardeman, Hardin, Henderson and 2 more | 7 hr |
| Mar 31, 3:48 PM CDT | Mesoscale Discussion | SPC | Cheatham, Davidson, Dickson, Giles, Hickman, Lawrence and 8 more | 87 min |
| Mar 31, 3:59 PM CDT | Severe Thunderstorm Watch | SPC | Bedford, Cannon, Cheatham, Clay, Davidson, DeKalb and 20 more | 5 hr |
| Mar 31, 5:49 PM CDT | Mesoscale Discussion | SPC | Clay, DeKalb, Fentress, Jackson, Macon, Overton and 7 more | 56 min |
Nearby
Tornado Watches in Alabama, 2016Tornado Watches in Tennessee, 2016Every tornado watch in 2016
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.