Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 77, NWS Jackson, MS

April 9, 2021Lowndes County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Apr 9, 2021, 5:46 PM CDT for Lowndes County, Mississippi. It was in force for 59 min. 2 reports 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, 5:46 PM CDT (22:46 UTC)
Expired: Apr 9, 2021, 6:45 PM CDT
In force: 59 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lowndes County, MS

The radar

The Columbus AFB radar (KGWX), 48 km from the middle of the area, began a volume at 22:48 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, 5:53 PM CDT	HAIL 1	1 W New Hope, MS	MEDIA REPORTS 1 INCH HAIL. TIME ESTIMATED BY RADAR.
Apr 9, 5:57 PM CDT	HAIL 1.5	New Hope, MS	MEDIA REPORTS PHOTOGRAPH OF 1.5 INCH HAIL IN NEW HOPE.

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

Birmingham, AL (KBMX), launched 12:00Z, 10.8 hours before the alert went out and 147 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: 89 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 1321 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

856 
WUUS54 KJAN 092246
SVRJAN
MSC087-092345-
/O.NEW.KJAN.SV.W.0077.210409T2246Z-210409T2345Z/

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

The National Weather Service in Jackson has issued a

* Severe Thunderstorm Warning for...
  Southeastern Lowndes County in northeastern Mississippi...

* Until 645 PM CDT.

* At 546 PM CDT, a severe thunderstorm was located near Columbus,
  moving north at 15 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Columbus around 615 PM CDT.
  Steens around 635 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3337 8829 3336 8830 3339 8843 3364 8838
      3364 8826
TIME...MOT...LOC 2246Z 199DEG 11KT 3342 8836 

HAIL...1.00IN
WIND...60MPH
 
$$

CME

2 follow-up statements

634 
WWUS54 KJAN 092259
SVSJAN

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

MSC087-092345-
/O.CON.KJAN.SV.W.0077.000000T0000Z-210409T2345Z/
Lowndes MS-
559 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EAST CENTRAL LOWNDES COUNTY...

At 559 PM CDT, a severe thunderstorm was located near Columbus,
moving north at 15 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Steens around 620 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3342 8829 3344 8841 3364 8838 3364 8826
TIME...MOT...LOC 2259Z 199DEG 12KT 3348 8833 

HAIL...1.00IN
WIND...60MPH
 
$$

CME

816 
WWUS54 KJAN 092323
SVSJAN

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

MSC087-092345-
/O.CON.KJAN.SV.W.0077.000000T0000Z-210409T2345Z/
Lowndes MS-
623 PM CDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR EAST CENTRAL LOWNDES COUNTY...

At 623 PM CDT, a severe thunderstorm was located near Ethelsville, or
7 miles southeast of Columbus, and is nearly stationary.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of east
central Lowndes County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3349 8835 3350 8828 3342 8829 3344 8841
TIME...MOT...LOC 2323Z 228DEG 3KT 3341 8833 

HAIL...1.00IN
WIND...60MPH
 
$$

CME

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, 5:58 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, 6:52 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Washington	68 min
Apr 9, 6:55 PM CDT	Special Weather Statement	JAN	Carroll, Grenada	50 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.