Alert archive / Mississippi / Severe Thunderstorm Watches in 2019
Severe Thunderstorm Watch 101
The Storm Prediction Center issued this severe thunderstorm watch at Apr 25, 2019, 2:43 AM CDT for Ashley County, Chicot County, Arkansas; 9 parishes in Louisiana; 26 counties in Mississippi. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2019, 2:43 AM CDT (07:43 UTC)
- Expired
- Apr 25, 2019, 9:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 37 counties
Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Attala 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, Leake County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson 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), 88 km from the middle of the area, began a volume at 07:45 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 3:07 AM CDT | Severe Thunderstorm Warning | JAN | Ashley | 20 min |
| Apr 25, 3:10 AM CDT | Severe Thunderstorm Warning | JAN | Chicot | 50 min |
| Apr 25, 3:36 AM CDT | Tornado Warning | JAN | Catahoula, Franklin, Tensas | 39 min |
| Apr 25, 3:47 AM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Issaquena, Sharkey, Washington, Yazoo | 58 min |
| Apr 25, 4:12 AM CDT | Tornado Warning | JAN | Franklin, Madison, Tensas | 63 min |
| Apr 25, 4:31 AM CDT | Severe Thunderstorm Warning | JAN | Madison | 59 min |
| Apr 25, 4:33 AM CDT | Severe Thunderstorm Warning | JAN | Carroll, Holmes, Humphreys, Leflore | 42 min |
| Apr 25, 4:46 AM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Madison, Yazoo | 59 min |
| Apr 25, 5:14 AM CDT | Severe Thunderstorm Warning | JAN | Carroll, Grenada, Holmes, Montgomery | 61 min |
| Apr 25, 5:29 AM CDT | Severe Thunderstorm Warning | JAN | Hinds, Issaquena, Madison, Warren, Yazoo | 61 min |
| Apr 25, 6:09 AM CDT | Severe Thunderstorm Warning | JAN | Catahoula, Concordia, Franklin | 81 min |
| Apr 25, 6:48 AM CDT | Severe Thunderstorm Warning | JAN | Tensas | 57 min |
| Apr 25, 7:00 AM CDT | Flash Flood Warning | JAN | Madison | 3 hr |
| Apr 25, 7:23 AM CDT | Severe Thunderstorm Warning | JAN | Claiborne, Franklin, Jefferson | 51 min |
| Apr 25, 7:46 AM CDT | Severe Thunderstorm Warning | JAN | Copiah, Hinds | 55 min |
| Apr 25, 8:22 AM CDT | Severe Thunderstorm Warning | JAN | Concordia | 24 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, 7.7 hours before the alert went out and 79 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
- 3 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 1500 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 5:02 AM CDT | Mesoscale Discussion | SPC | Chicot | 58 min |
| Apr 24, 7:35 PM CDT | Mesoscale Discussion | SPC | Vernon | 85 min |
| Apr 24, 11:19 PM CDT | Mesoscale Discussion | SPC | Beauregard, Natchitoches, Sabine, Vernon | 86 min |
| Apr 24, 11:52 PM CDT | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Calcasieu and 19 more | 8 hr |
| Apr 24, 11:57 PM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Claiborne, De Soto, Natchitoches, Red River and 2 more | 63 min |
| Apr 25, 2:08 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Bienville, Bossier and 24 more | 67 min |
| Apr 25, 5:24 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Beauregard, Calcasieu, Evangeline, Grant and 7 more | 66 min |
| Apr 25, 7:10 AM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia and 22 more | 2 hr |
| Apr 25, 8:06 AM CDT | Tornado Watch | SPC | Acadia, Ascension, Assumption, Avoyelles, East Baton Rouge, East Feliciana and 26 more | 8 hr |
| Apr 25, 11:48 AM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 17 more | 117 min |
| Apr 25, 3:14 PM CDT | Mesoscale Discussion | SPC | Jefferson, Plaquemines, Saint Bernard | 2 hr |
Nearby
Severe Thunderstorm Watches in Mississippi, 2019Severe Thunderstorm Watches in Louisiana, 2019Severe Thunderstorm Watches in Arkansas, 2019Every severe thunderstorm watch in 2019
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.