Alert archive / Mississippi / Tornado Watches in 2017
Tornado Watch 364
The Storm Prediction Center issued this tornado watch at Jun 22, 2017, 1:04 PM CDT for 4 states. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2017, 1:04 PM CDT (18:04 UTC)
- Expired
- Jun 22, 2017, 10:00 PM CDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 129 counties
Autauga County, AL, Barbour County, AL, Bibb County, AL, Blount County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Clay County, AL, Cleburne County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Etowah County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Washington County, AL, Wilcox County, AL, Ashley County, AR, Chicot County, AR, Ascension Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Franklin Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Pointe Coupee Parish, LA, Richland Parish, LA, Saint Helena Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Carroll Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Bolivar County, MS, Carroll 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, George County, MS, Greene County, MS, Grenada County, MS, Hancock County, MS, Harrison County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jackson 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, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Sunflower County, MS, Walthall County, MS, Warren County, MS, Washington County, MS, Wayne County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 64 km from the middle of the area, began a volume at 18:07 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
- 10%
- One or more gusts of 65 knots or more
- 5%
- 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
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 1:15 PM CDT | Tornado Warning | JAN | Yazoo | 9 min |
| Jun 22, 1:20 PM CDT | Tornado Warning | BMX | Jefferson | 10 min |
| Jun 22, 1:44 PM CDT | Flash Flood Warning | MOB | Butler, Crenshaw | 6 hr |
| Jun 22, 2:43 PM CDT | Tornado Warning | BMX | Jefferson, Shelby | 12 min |
| Jun 22, 2:55 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Leflore, Sunflower | 47 min |
| Jun 22, 2:56 PM CDT | Tornado Warning | BMX | Clay, Tallapoosa | 22 min |
| Jun 22, 2:58 PM CDT | Severe Thunderstorm Warning | JAN | Madison, Tensas | 36 min |
| Jun 22, 3:06 PM CDT | Severe Thunderstorm Warning | JAN | Chicot | 69 min |
| Jun 22, 3:38 PM CDT | Tornado Warning | BMX | Tallapoosa | 41 min |
| Jun 22, 4:02 PM CDT | Flash Flood Warning | MOB | George | 6 hr |
| Jun 22, 4:41 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Sharkey, Washington | 18 min |
| Jun 22, 6:39 PM CDT | Flash Flood Warning | LIX | Jackson | 7 hr |
| Jun 22, 7:32 PM CDT | Flash Flood Warning | MOB | Mobile, Washington | 6 hr |
| Jun 22, 10:00 PM CDT | Flash Flood Warning | MOB | Clarke | 6 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 12:00Z, 6.1 hours before the alert went out and 71 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
- 294 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 614 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.9
The text
As transmitted.
843 WWUS20 KWNS 221803 SEL4 SPC WW 221803 ALZ000-ARZ000-LAZ000-MSZ000-CWZ000-230300- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 364 NWS Storm Prediction Center Norman OK 105 PM CDT Thu Jun 22 2017 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Alabama Southeast Arkansas Eastern and southern Louisiana Mississippi Coastal Waters * Effective this Thursday afternoon and evening from 105 PM until 1000 PM CDT. * Primary threats include... A few tornadoes possible SUMMARY...On the eastern periphery of slow-northward-moving Tropical Depression Cindy, a moist environment coupled with moderately strong low-level shear will support the possibility of a few tornadoes this afternoon into evening. The tornado watch area is approximately along and 115 statute miles north and south of a line from 20 miles northwest of Natchez MS to 30 miles northeast of Montgomery AL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). 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 363... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 18035. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:56 PM CDT | Mesoscale Discussion | SPC | Baldwin, Clarke, Coffee, Conecuh, Covington, Escambia and 4 more | 2 hr |
| Jun 22, 2:24 AM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Coffee, Conecuh and 11 more | 96 min |
| Jun 22, 2:57 AM CDT | Tornado Watch | SPC | Autauga, Baldwin, Butler, Choctaw, Clarke, Conecuh and 15 more | 10 hr |
| Jun 22, 11:50 AM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 22 more | 85 min |
| Jun 22, 3:48 PM CDT | Mesoscale Discussion | SPC | Autauga, Barbour, Bibb, Blount, Bullock, Butler and 48 more | 87 min |
| Jun 22, 6:59 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Cleveland, Craighead, Crittenden, Cross and 17 more | 61 min |
Nearby
Tornado Watches in Mississippi, 2017Tornado Watches in Alabama, 2017Tornado Watches in Louisiana, 2017Every tornado watch in 2017
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.