Alert archive / Mississippi / Tornado Watches in 2016

Tornado Watch 65

March 30, 20166 counties in Arkansas; 22 parishes in Louisiana; 24 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Mar 30, 2016, 10:00 PM CDT for 6 counties in Arkansas; 22 parishes in Louisiana; 24 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2016, 10:00 PM CDT (03:00 UTC)
Expired
Mar 31, 2016, 4:20 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 52 counties

Ashley County, AR, Bradley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, Union County, AR, Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Copiah County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Rankin County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 163 km from the middle of the area, began a volume at 03:02 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
60%
One or more gusts of 65 knots or more
5%
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

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

IssuedProductOfficeCountiesLasted
Mar 30, 10:25 PM CDTFlash Flood WarningLZKArkansas, Bradley, Desha, Drew, Lincoln3 hr
Mar 30, 10:36 PM CDTSevere Thunderstorm WarningJANAshley39 min
Mar 30, 10:53 PM CDTFlash Flood WarningJANAshley, Chicot4 hr
Mar 30, 11:02 PM CDTSevere Thunderstorm WarningJANEast Carroll58 min
Mar 30, 11:03 PM CDTFlash Flood WarningSHVUnion3 hr
Mar 30, 11:06 PM CDTSevere Thunderstorm WarningLZKDesha, Drew38 min
Mar 30, 11:08 PM CDTTornado WarningJANChicot52 min
Mar 30, 11:09 PM CDTTornado WarningLZKDesha, Drew51 min
Mar 30, 11:15 PM CDTFlash Flood WarningLZKBradley, Calhoun, Clark, Cleveland, Dallas, Hot Spring and 1 more3 hr
Mar 31, 12:18 AM CDTFlash Flood WarningJANBolivar, Sunflower, Washington6 hr
Mar 31, 1:30 AM CDTFlash Flood WarningLZKArkansas, Cleveland, Desha, Jefferson, Lincoln6 hr
Mar 31, 1:37 AM CDTSevere Thunderstorm WarningJANHumphreys, Yazoo34 min
Mar 31, 3:00 AM CDTFlash Flood WarningJANHumphreys, Leflore, Sunflower, Washington4 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, 3.0 hours before the alert went out and 154 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, Jackson, MS at 00:00Z on 2016-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 213 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 00:00Z on 2016-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.1939587897Sfc1 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
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

Open this sounding in Storm Lab

The text

As transmitted.

206 
WWUS20 KWNS 310257
SEL5  
SPC WW 310257
ARZ000-LAZ000-MSZ000-311000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 65
NWS STORM PREDICTION CENTER NORMAN OK
1000 PM CDT WED MAR 30 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  SOUTHEAST ARKANSAS
  NORTHERN LOUISIANA
  WESTERN AND CENTRAL MISSISSIPPI

* EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1000
  PM UNTIL 500 AM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY
  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE

SUMMARY...CLUSTERS OF THUNDERSTORMS...INCLUDING A FEW SUPERCELLS AND
OTHER LONG-LIVED STRUCTURES WITH A THREAT FOR OCCASIONAL TORNADOES
AND LOCALLY DAMAGING WIND...EXPECTED TO MOVE / DEVELOP GENERALLY
EAST-NORTHEAST ACROSS WATCH AREA THROUGH EARLY THURSDAY.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF
GREENVILLE MISSISSIPPI TO 10 MILES SOUTH SOUTHWEST OF ALEXANDRIA
LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 60...WW 63...WW 64...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24040.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 30, 7:44 PM CDTSevere Thunderstorm WatchSPCBenton4 hr
Mar 30, 8:37 PM CDTMesoscale DiscussionSPCBenton53 min
Mar 30, 8:39 PM CDTMesoscale DiscussionSPCAshley, Bradley, Chicot, Desha, Drew, Lincoln and 1 more96 min
Mar 30, 11:30 PM CDTMesoscale DiscussionSPCChicot, Desha60 min
Mar 31, 10:26 AM CDTMesoscale DiscussionSPCArkansas, Cleveland, Craighead, Crittenden, Cross, Dallas and 14 more3 hr
Mar 31, 10:58 AM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Cross, Greene, Jackson and 9 more5 hr
Mar 31, 1:30 PM CDTMesoscale DiscussionSPCChicot2 hr
Mar 31, 2:05 PM CDTSevere Thunderstorm WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 7 more8 hr
Mar 31, 2:14 PM CDTMesoscale DiscussionSPCCrittenden, Cross91 min
Mar 31, 2:35 PM CDTTornado WatchSPCLee, Phillips7 hr
Mar 31, 3:04 AM CDTMesoscale DiscussionSPCEast Feliciana, Pointe Coupee, Saint Helena, Tangipahoa, Washington, West Feliciana86 min
Mar 31, 3:20 AM CDTTornado WatchSPCEast Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena, Saint Tammany and 4 more6 hr
Mar 31, 3:30 PM CDTMesoscale DiscussionSPCAscension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 6 more2 hr
Mar 31, 5:22 PM CDTMesoscale DiscussionSPCCaldwell, Catahoula, East Carroll, Franklin, Grant, Jackson and 9 more53 min
Mar 31, 7:47 AM CDTMesoscale DiscussionSPCCovington, Forrest, Greene, Jefferson Davis, Jones, Lamar and 3 more58 min
Mar 31, 8:43 AM CDTTornado WatchSPCGeorge, Greene, Perry, Stone5 hr
Mar 31, 4:47 PM CDTMesoscale DiscussionSPCAlcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 55 more58 min
Mar 31, 5:58 PM CDTTornado WatchSPCWayne7 hr
Mar 31, 6:52 PM CDTMesoscale DiscussionSPCAlcorn, Calhoun, Chickasaw, Choctaw, Clarke, Clay and 29 more53 min

Nearby

Tornado Watches in Mississippi, 2016Tornado Watches in Louisiana, 2016Tornado Watches in Arkansas, 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.