Alert archive / Mississippi / Tornado Watches in 2016
Tornado Watch 66
The Storm Prediction Center issued this tornado watch at Mar 31, 2016, 3:20 AM CDT for 10 parishes in Louisiana; 16 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2016, 3:20 AM CDT (08:20 UTC)
- Expired
- Mar 31, 2016, 9:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 26 counties
East Baton Rouge Parish, LA, East Feliciana Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Covington County, MS, Forrest County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pearl River County, MS, Pike County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wilkinson County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 91 km from the middle of the area, began a volume at 08:22 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
- 20%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 5:23 AM CDT | Tornado Warning | LIX | East Baton Rouge, East Feliciana, Saint Helena | 37 min |
| Mar 31, 6:02 AM CDT | Tornado Warning | LIX | Tangipahoa | 13 min |
| Mar 31, 6:16 AM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 11 min |
| Mar 31, 6:23 AM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 37 min |
| Mar 31, 7:05 AM CDT | Severe Thunderstorm Warning | LIX | Walthall | 25 min |
| Mar 31, 7:26 AM CDT | Severe Thunderstorm Warning | JAN | Lamar, Marion | 49 min |
| Mar 31, 7:37 AM CDT | Flash Flood Warning | JAN | Marion | 113 min |
| Mar 31, 7:53 AM CDT | Tornado Warning | JAN | Forrest, Lamar | 37 min |
| Mar 31, 8:13 AM CDT | Flash Flood Warning | JAN | Forrest, Lamar | 2 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
Jackson, MS (KJAN), launched 00:00Z, 8.3 hours before the alert went out and 96 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
- 213 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 303 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.8
The text
As transmitted.
394 WWUS20 KWNS 310818 SEL6 SPC WW 310818 LAZ000-MSZ000-311400- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 66 NWS STORM PREDICTION CENTER NORMAN OK 320 AM CDT THU MAR 31 2016 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF PARTS OF SOUTHEAST LOUISIANA PORTIONS OF SOUTHEAST MISSISSIPPI * EFFECTIVE THIS THURSDAY MORNING FROM 320 AM UNTIL 900 AM CDT. * 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...A BROKEN BAND OF STRONG/LOCALLY SEVERE THUNDERSTORMS WILL CONTINUE MOVING EASTWARD ACROSS PARTS OF SOUTHEAST MISSISSIPPI AND ADJACENT SOUTHEAST LOUISIANA THIS MORNING. THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING LOCALLY DAMAGING WINDS AND LARGE HAIL...WITH A TORNADO OR TWO ALSO POSSIBLE. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF PINE BELT MISSISSIPPI TO 55 MILES SOUTH OF MC COMB MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). 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 65... 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 24035. ...GOSS
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 8:39 PM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 13 more | 96 min |
| Mar 30, 10:00 PM CDT | Tornado Watch | SPC | Bienville, Caldwell, Catahoula, Claiborne, Concordia, East Carroll and 16 more | 6 hr |
| Mar 30, 11:30 PM CDT | Mesoscale Discussion | SPC | Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more | 60 min |
| Mar 31, 3:04 AM CDT | Mesoscale Discussion | SPC | East Feliciana, Pointe Coupee, Saint Helena, Tangipahoa, Washington, West Feliciana | 86 min |
| Mar 31, 1:30 PM CDT | Mesoscale Discussion | SPC | Avoyelles, Caldwell, Catahoula, Concordia, East Carroll, Franklin and 12 more | 2 hr |
| Mar 31, 2:05 PM CDT | Severe Thunderstorm Watch | SPC | Avoyelles, Bienville, Caldwell, Catahoula, Claiborne, Concordia and 20 more | 8 hr |
| Mar 31, 3:30 PM CDT | Mesoscale Discussion | SPC | Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 6 more | 2 hr |
| Mar 31, 5:22 PM CDT | Mesoscale Discussion | SPC | Caldwell, Catahoula, East Carroll, Franklin, Grant, Jackson and 9 more | 53 min |
| Mar 31, 7:47 AM CDT | Mesoscale Discussion | SPC | Covington, Forrest, Greene, Jefferson Davis, Jones, Lamar and 3 more | 58 min |
| Mar 31, 8:43 AM CDT | Tornado Watch | SPC | George, Greene, Perry, Stone | 5 hr |
| Mar 31, 10:26 AM CDT | Mesoscale Discussion | SPC | Coahoma, DeSoto, Tate, Tunica | 3 hr |
| Mar 31, 2:35 PM CDT | Tornado Watch | SPC | Adams, Alcorn, Attala, Benton, Bolivar, Calhoun and 60 more | 7 hr |
| Mar 31, 4:47 PM CDT | Mesoscale Discussion | SPC | Alcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 55 more | 58 min |
| Mar 31, 5:58 PM CDT | Tornado Watch | SPC | Wayne | 7 hr |
| Mar 31, 6:52 PM CDT | Mesoscale Discussion | SPC | Alcorn, Calhoun, Chickasaw, Choctaw, Clarke, Clay and 29 more | 53 min |
Nearby
Tornado Watches in Mississippi, 2016Tornado Watches in Louisiana, 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.