Alert archive / Mississippi / Tornado Watches in 2016
Tornado Watch 508
The Storm Prediction Center issued this tornado watch at Nov 29, 2016, 8:50 PM CST for 13 counties in Alabama; 33 parishes in Louisiana; 53 counties in Mississippi. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 29, 2016, 8:50 PM CST (02:50 UTC)
- Expired
- Nov 30, 2016, 4:59 AM CST
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 99 counties
Bibb County, AL, Blount County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Madison Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Walthall County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 116 km from the middle of the area, began a volume at 02:52 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
- 60%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- 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
- 80%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 9:13 PM CST | Tornado Warning | JAN | Attala | 47 min |
| Nov 29, 9:14 PM CST | Tornado Warning | JAN | Madison | 61 min |
| Nov 29, 9:38 PM CST | Severe Thunderstorm Warning | JAN | Catahoula, Franklin | 67 min |
| Nov 29, 9:49 PM CST | Severe Thunderstorm Warning | JAN | Choctaw | 41 min |
| Nov 29, 9:55 PM CST | Tornado Warning | JAN | Tensas | 41 min |
| Nov 29, 9:58 PM CST | Severe Thunderstorm Warning | LCH | Allen, Beauregard | 38 min |
| Nov 29, 9:58 PM CST | Severe Thunderstorm Warning | JAN | Holmes, Humphreys | 47 min |
| Nov 29, 10:02 PM CST | Severe Thunderstorm Warning | JAN | Yazoo | 39 min |
| Nov 29, 10:13 PM CST | Tornado Warning | BMX | Winston | 17 min |
| Nov 29, 10:33 PM CST | Severe Thunderstorm Warning | JAN | Carroll, Montgomery | 19 min |
| Nov 29, 10:54 PM CST | Severe Thunderstorm Warning | JAN | Clay | 21 min |
| Nov 29, 10:56 PM CST | Severe Thunderstorm Warning | JAN | Leake, Neshoba | 49 min |
| Nov 29, 11:34 PM CST | Severe Thunderstorm Warning | LCH | Avoyelles, Evangeline, Rapides | 38 min |
| Nov 29, 11:35 PM CST | Tornado Warning | BMX | Fayette, Lamar, Marion | 55 min |
| Nov 29, 11:35 PM CST | Tornado Warning | JAN | Neshoba, Winston | 40 min |
| Nov 29, 11:45 PM CST | Severe Thunderstorm Warning | JAN | Hinds | 60 min |
| Nov 30, 12:00 AM CST | Severe Thunderstorm Warning | JAN | Leake, Madison, Rankin, Scott | 26 min |
| Nov 30, 12:09 AM CST | Tornado Warning | JAN | Lowndes, Noxubee, Winston | 51 min |
| Nov 30, 12:34 AM CST | Tornado Warning | BMX | Winston | 24 min |
| Nov 30, 12:43 AM CST | Severe Thunderstorm Warning | JAN | Copiah | 19 min |
| Nov 30, 12:53 AM CST | Tornado Warning | JAN | Lowndes, Noxubee | 10 min |
| Nov 30, 12:57 AM CST | Severe Thunderstorm Warning | LCH | Avoyelles | 26 min |
| Nov 30, 1:27 AM CST | Severe Thunderstorm Warning | LIX | Wilkinson | 33 min |
| Nov 30, 1:37 AM CST | Severe Thunderstorm Warning | JAN | Adams, Franklin | 53 min |
| Nov 30, 1:37 AM CST | Flash Flood Warning | MEG | Monroe | 3 hr |
| Nov 30, 2:33 AM CST | Tornado Warning | BMX | Walker, Winston | 27 min |
| Nov 30, 2:46 AM CST | Severe Thunderstorm Warning | LCH | Acadia, Lafayette, Saint Landry, Saint Martin, Vermilion | 44 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
Jackson, MS (KJAN), launched 00:00Z, 2.8 hours before the alert went out and 112 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
- 1191 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 883 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 391 m²/s²
- 0-3 km storm-relative helicity
- 488 m²/s²
- Significant tornado parameter
- 3.5
- Supercell composite
- 15.4
The text
As transmitted.
269 WWUS20 KWNS 300247 SEL8 SPC WW 300247 ALZ000-LAZ000-MSZ000-CWZ000-301100- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 508 NWS STORM PREDICTION CENTER NORMAN OK 850 PM CST TUE NOV 29 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WEST CENTRAL ALABAMA SOUTHERN AND EASTERN LOUISIANA CENTRAL AND SOUTHERN MISSISSIPPI COASTAL WATERS * EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 850 PM UNTIL 500 AM CST. * PRIMARY THREATS INCLUDE... A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...NUMEROUS THUNDERSTORMS ARE FORECAST TO INTENSIFY THIS EVENING AND OVERNIGHT OVER PARTS OF LA AND MS...MOVING INTO AL. VERY STRONG WINDS ALOFT WILL POSE A RISK OF DAMAGING WIND GUSTS AND A FEW TORNADOES. A STRONG TORNADO OR TWO IS POSSIBLE. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES SOUTH OF LAFAYETTE LA TO 30 MILES NORTH NORTHWEST OF COLUMBUS MS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). 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 504...WW 505...WW 506...WW 507... 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, 9:28 PM CST | Mesoscale Discussion | SPC | Cullman, DeKalb, Jackson, Lawrence, Limestone, Madison and 2 more | 62 min |
| Nov 29, 10:28 PM CST | Tornado Watch | SPC | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 5 hr |
| 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 | Caldwell, Catahoula, Concordia, East Carroll, Franklin, Grant and 6 more | 114 min |
| Nov 29, 9:47 PM CST | Mesoscale Discussion | SPC | Concordia | 58 min |
| Nov 30, 3:33 AM CST | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 14 more | 87 min |
Nearby
Tornado Watches in Mississippi, 2016Tornado Watches in Louisiana, 2016Tornado Watches in Alabama, 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.