Alert archive / Mississippi / Severe Thunderstorm Watches in 2018

Severe Thunderstorm Watch 197

June 22, 2018Columbia County, Union County, Arkansas; 19 parishes in Louisiana; 25 counties in Mississippi

The Storm Prediction Center issued this severe thunderstorm watch at Jun 22, 2018, 10:55 AM CDT for Columbia County, Union County, Arkansas; 19 parishes in Louisiana; 25 counties in Mississippi. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued
Jun 22, 2018, 10:55 AM CDT (15:55 UTC)
Expired
Jun 22, 2018, 8:25 PM CDT
In force
10 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 46 counties

Columbia 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, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Ouachita Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Claiborne County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Hinds County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Warren County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 177 km from the middle of the area, began a volume at 15:57 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
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 22, 11:07 AM CDTSevere Thunderstorm WarningJANEast Carroll53 min
Jun 22, 11:22 AM CDTSevere Thunderstorm WarningJANEast Carroll, Madison, Richland, Tensas39 min
Jun 22, 1:02 PM CDTSevere Thunderstorm WarningJANEast Carroll, West Carroll43 min
Jun 22, 1:10 PM CDTSevere Thunderstorm WarningJANIssaquena, Sharkey50 min
Jun 22, 2:29 PM CDTSevere Thunderstorm WarningJANFranklin, Morehouse, Richland, West Carroll46 min
Jun 22, 3:03 PM CDTTornado WarningJANFranklin, Richland42 min
Jun 22, 3:29 PM CDTTornado WarningJANFranklin, Madison46 min
Jun 22, 4:04 PM CDTSevere Thunderstorm WarningJANEast Carroll, West Carroll56 min
Jun 22, 4:24 PM CDTSevere Thunderstorm WarningJANMorehouse, Richland, West Carroll51 min
Jun 22, 4:55 PM CDTSevere Thunderstorm WarningJANEast Carroll50 min
Jun 22, 5:05 PM CDTSevere Thunderstorm WarningJANMadison40 min
Jun 22, 5:16 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Rankin, Scott, Smith34 min
Jun 22, 5:24 PM CDTSevere Thunderstorm WarningJANHinds, Madison, Warren, Yazoo66 min
Jun 22, 5:42 PM CDTSevere Thunderstorm WarningJANMadison30 min
Jun 22, 6:17 PM CDTSevere Thunderstorm WarningJANHinds, Rankin39 min
Jun 22, 6:32 PM CDTSevere Thunderstorm WarningJANClarke, Jasper, Lauderdale, Newton58 min
Jun 22, 6:41 PM CDTSevere Thunderstorm WarningJANMorehouse32 min
Jun 22, 7:08 PM CDTSevere Thunderstorm WarningJANClaiborne, Jefferson29 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 21, 8:30 PM CDTMesoscale DiscussionSPCCrittenden, Cross, St. Francis2 hr
Jun 22, 8:42 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Columbia, Drew and 2 more93 min
Jun 22, 3:03 PM CDTMesoscale DiscussionSPCAshley, Columbia, Union87 min
Jun 22, 6:05 PM CDTMesoscale DiscussionSPCEast Carroll, Franklin, Madison, Morehouse, Ouachita, Richland and 2 more115 min
Jun 22, 9:09 AM CDTMesoscale DiscussionSPCCalhoun, Carroll, Chickasaw, Choctaw, Clay, Grenada and 15 more96 min
Jun 22, 12:35 PM CDTMesoscale DiscussionSPCChickasaw, Clay, Itawamba, Lee, Lowndes, Monroe and 4 more85 min

Nearby

Severe Thunderstorm Watches in Mississippi, 2018Severe Thunderstorm Watches in Louisiana, 2018Severe Thunderstorm Watches in Arkansas, 2018Every severe thunderstorm watch in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.