Alert archive / Mississippi / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 167, NWS Jackson, MS

May 9, 2021Lowndes County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 9, 2021, 8:21 PM CDT for Lowndes County, Mississippi. It was in force for 28 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: May 9, 2021, 8:21 PM CDT (01:21 UTC)
Expired: May 9, 2021, 8:49 PM CDT
In force: 28 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Lowndes County, MS

The radar

The Columbus AFB radar (KGWX), 38 km from the middle of the area, began a volume at 01:20 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
May 9, 8:45 PM CDT	TSTM WND DMG	2 Sw Columbus Afb, MS	A TREE WAS BLOWN DOWN AT DEWAYNE HAYES CAMPGROUND. REPORT RELAYED VIA SOCIAL MEDIA.

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
May 9, 7:29 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.4 hours before the alert went out and 161 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: 436 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

243 
WUUS54 KJAN 100121
SVRJAN
MSC087-100230-
/O.NEW.KJAN.SV.W.0167.210510T0121Z-210510T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jackson MS
821 PM CDT Sun May 9 2021

The National Weather Service in Jackson has issued a

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

* Until 930 PM CDT.

* At 820 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles northwest of Caledonia to near Pala Alto,
  moving southeast at 40 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Kolola Springs around 830 PM CDT.
  Caledonia around 835 PM CDT.
  Steens around 840 PM CDT.
  Columbus AFB and Bent Oak around 845 PM CDT.
  Columbus around 850 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3329 8830 3329 8851 3350 8867 3351 8860
      3353 8855 3355 8853 3352 8848 3356 8850
      3356 8849 3358 8849 3360 8847 3362 8851
      3364 8850 3365 8851 3367 8842 3369 8839
      3369 8837 3372 8833 3374 8833 3374 8825
TIME...MOT...LOC 0120Z 311DEG 36KT 3378 8841 3368 8871 

HAIL...0.75IN
WIND...60MPH
 
$$

19

1 follow-up statement

532 
WWUS54 KJAN 100149
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
849 PM CDT Sun May 9 2021

MSC087-100159-
/O.CAN.KJAN.SV.W.0167.000000T0000Z-210510T0230Z/
Lowndes MS-
849 PM CDT Sun May 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR LOWNDES COUNTY IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
northeastern Mississippi.

LAT...LON 3329 8830 3329 8851 3350 8867 3351 8860
      3353 8855 3355 8853 3352 8848 3356 8850
      3356 8849 3358 8849 3360 8847 3362 8851
      3364 8850 3365 8851 3367 8842 3369 8839
      3369 8837 3372 8833 3374 8833 3374 8825
TIME...MOT...LOC 0146Z 311DEG 36KT 3360 8817 3350 8847 

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:32 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	73 min
May 9, 7:57 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Webster	43 min
May 9, 8:55 PM CDT	Special Weather Statement	JAN	Issaquena	35 min
May 9, 9:06 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Washington	39 min
May 9, 9:36 PM CDT	Severe Thunderstorm Warning	JAN	Yazoo	37 min
May 9, 9:45 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey	60 min
May 9, 10:12 PM CDT	Severe Thunderstorm Warning	JAN	Warren, Yazoo	62 min
May 9, 10:16 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Yazoo	35 min
May 9, 10:24 PM CDT	Flash Flood Warning	JAN	Holmes, Humphreys, Sharkey, Yazoo	86 min
May 9, 10:34 PM CDT	Flash Flood Warning	JAN	Carroll, Choctaw, Clay, Lowndes, Montgomery, Oktibbeha and 1 more	78 min
May 9, 10:38 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin	82 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.