Alert archive / Alabama / Tornado Watches in 2016
Tornado Watch 510
The Storm Prediction Center issued this tornado watch at Nov 29, 2016, 10:28 PM CST for 11 counties in Alabama; Franklin County, Lincoln County, Moore County, Tennessee. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 29, 2016, 10:28 PM CST (04:28 UTC)
- Expired
- Nov 30, 2016, 3:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Colbert County, AL, Cullman County, AL, DeKalb County, AL, Franklin County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Franklin County, TN, Lincoln County, TN, Moore County, TN
The radar
The Northeast Alabama radar (KHTX), 103 km from the middle of the area, began a volume at 04:31 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
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
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 |
|---|---|---|---|---|
| Nov 29, 10:31 PM CST | Tornado Warning | HUN | Morgan | 29 min |
| Nov 29, 10:34 PM CST | Severe Thunderstorm Warning | HUN | Madison | 41 min |
| Nov 29, 10:49 PM CST | Severe Thunderstorm Warning | HUN | Jackson | 41 min |
| Nov 29, 10:54 PM CST | Tornado Warning | HUN | Jackson | 36 min |
| Nov 29, 10:56 PM CST | Tornado Warning | HUN | Marshall, Morgan | 22 min |
| Nov 29, 11:06 PM CST | Severe Thunderstorm Warning | HUN | Franklin | 39 min |
| Nov 29, 11:12 PM CST | Tornado Warning | HUN | Madison, Marshall | 14 min |
| Nov 29, 11:17 PM CST | Tornado Warning | HUN | Franklin | 12 min |
| Nov 29, 11:32 PM CST | Severe Thunderstorm Warning | HUN | Jackson, Marshall | 43 min |
| Nov 30, 12:02 AM CST | Tornado Warning | HUN | DeKalb, Jackson | 24 min |
| Nov 30, 12:05 AM CST | Severe Thunderstorm Warning | HUN | Franklin, Lawrence, Morgan | 40 min |
| Nov 30, 12:23 AM CST | Tornado Warning | HUN | Jackson | 23 min |
| Nov 30, 12:37 AM CST | Severe Thunderstorm Warning | HUN | Lawrence, Limestone, Madison, Morgan | 38 min |
| Nov 30, 12:50 AM CST | Severe Thunderstorm Warning | HUN | Lawrence, Morgan | 40 min |
| Nov 30, 12:55 AM CST | Severe Thunderstorm Warning | HUN | Limestone, Madison, Morgan | 50 min |
| Nov 30, 1:21 AM CST | Severe Thunderstorm Warning | HUN | Madison, Marshall, Morgan | 39 min |
| Nov 30, 1:40 AM CST | Severe Thunderstorm Warning | HUN | Jackson | 65 min |
| Nov 30, 1:41 AM CST | Flash Flood Warning | HUN | Lawrence, Limestone, Madison, Morgan | 6 hr |
| Nov 30, 1:44 AM CST | Tornado Warning | HUN | Jackson | 31 min |
| Nov 30, 1:53 AM CST | Severe Thunderstorm Warning | HUN | Jackson, Madison, Marshall, Morgan | 40 min |
| Nov 30, 2:12 AM CST | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 33 min |
| Nov 30, 2:15 AM CST | Tornado Warning | HUN | Jackson | 30 min |
| Nov 30, 2:37 AM CST | Tornado Warning | HUN | Cullman | 38 min |
| Nov 30, 2:39 AM CST | Severe Thunderstorm Warning | HUN | DeKalb, Jackson | 36 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, 4.5 hours before the alert went out and 156 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
- 1648 m above ground
- 0-6 km bulk shear
- 90 kt
- 0-1 km storm-relative helicity
- 321 m²/s²
- 0-3 km storm-relative helicity
- 354 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
712 WWUS20 KWNS 300423 SEL0 SPC WW 300423 ALZ000-TNZ000-300900- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 510 NWS STORM PREDICTION CENTER NORMAN OK 1025 PM CST TUE NOV 29 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF NORTHERN ALABAMA SOUTHERN MIDDLE TENNESSEE * EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1025 PM UNTIL 300 AM CST. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...ISOLATED INTENSE THUNDERSTORMS WILL REMAIN POSSIBLE OVER THE WATCH AREA FOR SEVERAL MORE HOURS...POSING A RISK OF DAMAGING WINDS AND ISOLATED TORNADOES. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 35 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST OF MUSCLE SHOALS AL TO 65 MILES EAST OF HUNTSVILLE AL. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0). 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 505...WW 507...WW 508...WW 509... 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 500. MEAN STORM MOTION VECTOR 25035. ...HART
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 6:43 PM CST | Mesoscale Discussion | SPC | Colbert, Fayette, Franklin, Lamar, Lauderdale, Lawrence and 6 more | 92 min |
| Nov 29, 6:47 PM CST | Tornado Watch | SPC | Cullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more | 8 hr |
| Nov 29, 8:03 PM CST | Mesoscale Discussion | SPC | Choctaw, Fayette, Greene, Hale, Lamar, Pickens and 2 more | 2 hr |
| Nov 29, 8:50 PM CST | Tornado Watch | SPC | Bibb, Blount, Fayette, Greene, Hale, Jefferson and 7 more | 8 hr |
| Nov 29, 9:28 PM CST | Mesoscale Discussion | SPC | Cullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more | 62 min |
| Nov 29, 11:17 PM CST | Mesoscale Discussion | SPC | DeKalb, Jackson, Lawrence, Limestone, Madison, Morgan | 118 min |
| Nov 29, 11:37 PM CST | Mesoscale Discussion | SPC | Fayette, Lamar, Pickens | 113 min |
| Nov 30, 1:07 AM CST | Mesoscale Discussion | SPC | Blount, Cullman, DeKalb, Fayette, Jackson, Madison and 5 more | 53 min |
| Nov 30, 2:54 AM CST | Tornado Watch | SPC | Bibb, Blount, Calhoun, Cherokee, Chilton, Cleburne and 22 more | 7 hr |
| Nov 30, 4:57 AM CST | Tornado Watch | SPC | Choctaw, Clarke, Mobile, Washington | 7 hr |
| Nov 30, 5:10 AM CST | Mesoscale Discussion | SPC | Bibb, Blount, Calhoun, Cherokee, Chilton, Clay and 27 more | 95 min |
| Nov 30, 9:00 AM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Blount, Bullock, Butler and 37 more | 2 hr |
| Nov 30, 11:06 AM CST | Tornado Watch | SPC | Baldwin, Barbour, Bullock, Butler, Chambers, Coffee and 17 more | 6 hr |
| Nov 30, 12:59 PM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Coffee, Covington, Crenshaw, Dale and 7 more | 2 hr |
| Nov 30, 1:55 PM CST | Mesoscale Discussion | SPC | Barbour, Coffee, Covington, Dale, Geneva, Henry and 2 more | 2 hr |
| Nov 29, 6:06 PM CST | Mesoscale Discussion | SPC | Attala, Choctaw, Claiborne, Hinds, Holmes, Humphreys and 13 more | 114 min |
| Nov 29, 9:47 PM CST | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 5 more | 58 min |
| Nov 30, 3:33 AM CST | Mesoscale Discussion | SPC | Amite, Clarke, Covington, Forrest, Hancock, Jasper and 17 more | 87 min |
| Nov 29, 10:11 PM CST | Tornado Watch | SPC | Bledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 2 more | 5 hr |
| Nov 29, 11:46 PM CST | Mesoscale Discussion | SPC | Anderson, Blount, Campbell, Claiborne, Grainger, Hamblen and 6 more | 119 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.