Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Jackson, MS

April 9, 2021Issaquena County, Washington County, Mississippi; East Carroll Parish, West Carroll Parish, Louisiana; Chicot County, Arkansas

NWS Jackson, MS issued this severe thunderstorm warning at Apr 9, 2021, 6:52 PM CDT for Issaquena County, Washington County, Mississippi; East Carroll Parish, West Carroll Parish, Louisiana; Chicot County, Arkansas. It was in force for 68 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 9, 2021, 6:52 PM CDT (23:52 UTC)
Expired: Apr 9, 2021, 8:00 PM CDT
In force: 68 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Chicot County, AR, East Carroll Parish, LA, West Carroll Parish, LA, Issaquena County, MS, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 138 km from the middle of the area, began a volume at 23:52 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 was reported inside it

Time	Report	Where	Remark
Apr 9, 7:20 PM CDT	TSTM WND DMG	3 N Transylvania, LA	COUPLE POWER LINES DOWN ON 65 SOUTH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 9, 3:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.9 hours before the alert went out and 128 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1659 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 787 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

As transmitted.

864 
WUUS54 KJAN 092352
SVRJAN
ARC017-LAC035-123-MSC055-151-100100-
/O.NEW.KJAN.SV.W.0083.210409T2352Z-210410T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
652 PM CDT Fri Apr 9 2021

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Southern Chicot County in southeastern Arkansas...
  East Carroll Parish in northeastern Louisiana...
  Northeastern West Carroll Parish in northeastern Louisiana...
  Southwestern Washington County in northwestern Mississippi...
  Issaquena County in west central Mississippi...

* Until 800 PM CDT.

* At 652 PM CDT, severe thunderstorms were located along a line
  extending from near Parkdale to 6 miles northwest of Oak Grove to
  near Darnell to near Holly Ridge, moving east at 35 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Millikin, Gassoway and Shelburn around 715 PM CDT.
  Monticello around 720 PM CDT.
  Lake Providence, Eudora, Transylvania and Chicot Junction around 
  725 PM CDT.
  Glen Allan around 735 PM CDT.
  Fitler, Sondheimer and Alsatia around 740 PM CDT.

Other locations impacted by these severe thunderstorms include
Mayersville and Kilbourne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3298 9144 3300 9144 3301 9146 3320 9146
      3325 9109 3291 9096 3258 9097 3258 9104
      3254 9115 3254 9145 3256 9143 3258 9145
      3261 9139 3269 9140 3269 9138 3275 9134
      3286 9134 3288 9131 3294 9131 3292 9148
TIME...MOT...LOC 2352Z 266DEG 31KT 3313 9159 3294 9146 3269 9150 3252
9169

HAIL...0.88IN
WIND...60MPH
 
$$

TW

1 follow-up statement

144 
WWUS54 KJAN 100056
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
756 PM CDT Fri Apr 9 2021

ARC017-LAC035-123-MSC055-151-100106-
/O.EXP.KJAN.SV.W.0083.000000T0000Z-210410T0100Z/
Chicot AR-East Carroll LA-West Carroll LA-Washington MS-Issaquena MS-
756 PM CDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHICOT COUNTY...EAST
CARROLL AND NORTHEASTERN WEST CARROLL PARISHES...SOUTHWESTERN
WASHINGTON AND ISSAQUENA COUNTIES WILL EXPIRE AT 800 PM CDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail, gusty winds and heavy rain
are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Arkansas...northeastern Louisiana...and northwestern and
west central Mississippi.

LAT...LON 3298 9144 3300 9144 3301 9146 3320 9146
      3325 9109 3291 9096 3258 9097 3258 9104
      3254 9115 3254 9145 3256 9143 3258 9145
      3261 9139 3269 9140 3269 9138 3275 9134
      3286 9134 3288 9131 3294 9131 3292 9148
TIME...MOT...LOC 0056Z 266DEG 31KT 3317 9097 3297 9085 3272 9089 3256
9108

$$

NF

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 10:45 AM CDT	River Flood Warning	JAN	Neshoba	6 days
Apr 9, 10:47 AM CDT	River Flood Warning	JAN	Leake	5 days
Apr 9, 10:48 AM CDT	River Flood Warning	JAN	Lawrence	8 days
Apr 9, 10:49 AM CDT	River Flood Warning	JAN	Jones	7 days
Apr 9, 10:53 AM CDT	River Flood Warning	JAN	Clay	23 hr
Apr 9, 3:22 PM CDT	Special Weather Statement	JAN	Clarke	23 min
Apr 9, 4:17 PM CDT	Special Weather Statement	JAN	Covington	43 min
Apr 9, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Smith	55 min
Apr 9, 4:55 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower, Washington	95 min
Apr 9, 5:19 PM CDT	Severe Thunderstorm Warning	JAN	Jasper, Newton	56 min
Apr 9, 5:46 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	59 min
Apr 9, 5:58 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Neshoba, Newton	47 min
Apr 9, 6:00 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Washington	60 min
Apr 9, 6:16 PM CDT	Severe Thunderstorm Warning	JAN	Neshoba, Winston	59 min
Apr 9, 6:27 PM CDT	Special Weather Statement	JAN	Leflore	48 min
Apr 9, 6:47 PM CDT	Special Weather Statement	JAN	Humphreys	43 min
Apr 9, 6:55 PM CDT	Special Weather Statement	JAN	Carroll, Grenada	50 min
Apr 9, 5:47 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse, Richland, West Carroll	88 min
Apr 9, 5:55 PM CDT	Severe Thunderstorm Warning	JAN	Morehouse	65 min
Apr 9, 6:55 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison, Richland, Tensas	80 min
Apr 9, 4:26 PM CDT	Severe Thunderstorm Warning	JAN	Ashley	70 min
Apr 9, 5:12 PM CDT	Severe Thunderstorm Warning	JAN	Ashley, Chicot	76 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2021 Severe Thunderstorm Warnings in Louisiana, 2021 Severe Thunderstorm Warnings in Arkansas, 2021 Every severe thunderstorm warning in 2021

Sources

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