Alert archive / Mississippi / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 50, NWS Mobile, AL

January 21, 2017Greene County, Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jan 21, 2017, 9:25 PM CST for Greene County, Perry County, Wayne County, Mississippi. It was in force for 50 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: Jan 21, 2017, 9:25 PM CST (03:25 UTC)
Expired: Jan 21, 2017, 10:15 PM CST
In force: 50 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Greene County, MS, Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 03:28 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
Jan 21, 9:40 PM CST	HAIL 1	Beaumont, MS	QUARTER SIZE HAIL REPORTED IN BEAUMONT WITH THUNDERSTORM PASSAGE. TIME ESTIMATED VIA RADAR

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
Jan 21, 6:51 PM CST	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.4 hours before the alert went out and 140 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: 1796 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 96 kt
0-1 km storm-relative helicity: 288 m²/s²
0-3 km storm-relative helicity: 382 m²/s²
Significant tornado parameter: 4.0
Supercell composite: 16.4

Open this sounding in Storm Lab

The text

As transmitted.

786 
WUUS54 KMOB 220325
SVRMOB
MSC041-111-153-220415-
/O.NEW.KMOB.SV.W.0050.170122T0325Z-170122T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
925 PM CST SAT JAN 21 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Southwestern Wayne County in southeastern Mississippi...
  Northwestern Greene County in southeastern Mississippi...
  Perry County in southeastern Mississippi...

* Until 1015 PM CST

* At 925 PM CST, a severe thunderstorm was located near New Augusta,
  or 11 miles southeast of Petal, moving northeast at 50 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. 

* Locations impacted include...
  Richton, Beaumont, New Augusta and McLain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 300 AM CST for southeastern
Mississippi.

LAT...LON 3143 8915 3143 8894 3155 8894 3145 8878
      3110 8879 3103 8915
TIME...MOT...LOC 0325Z 246DEG 44KT 3124 8910 

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

1 follow-up statement

755 
WWUS54 KMOB 220408
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1008 PM CST SAT JAN 21 2017

MSC153-220418-
/O.CAN.KMOB.SV.W.0050.000000T0000Z-170122T0415Z/
Wayne MS-
1008 PM CST SAT JAN 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WAYNE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has warned
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 300 AM CST for southeastern
Mississippi.

LAT...LON 3135 8893 3143 8880 3143 8878 3119 8879
      3113 8893
TIME...MOT...LOC 0408Z 246DEG 44KT 3146 8853 

$$

MSC041-111-220415-
/O.CON.KMOB.SV.W.0050.000000T0000Z-170122T0415Z/
Greene MS-Perry MS-
1008 PM CST SAT JAN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CST
FOR NORTHWESTERN GREENE AND NORTHEASTERN PERRY COUNTIES...

At 1008 PM CST, a severe thunderstorm was located near State Line, or
16 miles west of Chatom, moving northeast at 50 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. 

Locations impacted include...
Beaumont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 300 AM CST for southeastern
Mississippi.

LAT...LON 3135 8893 3143 8880 3143 8878 3119 8879
      3113 8893
TIME...MOT...LOC 0408Z 246DEG 44KT 3146 8853 

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

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 21, 6:18 PM CST	Special Weather Statement	MOB	George	57 min
Jan 21, 6:18 PM CST	Severe Thunderstorm Warning	MOB	George	42 min
Jan 21, 7:11 PM CST	Severe Thunderstorm Warning	MOB	George, Greene	34 min
Jan 21, 7:40 PM CST	Severe Thunderstorm Warning	MOB	George	28 min
Jan 21, 7:56 PM CST	Severe Thunderstorm Warning	MOB	Perry	49 min
Jan 21, 8:28 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	47 min
Jan 21, 8:52 PM CST	Severe Thunderstorm Warning	MOB	Perry, Wayne	38 min
Jan 21, 9:06 PM CST	Severe Thunderstorm Warning	MOB	Wayne	39 min
Jan 21, 9:48 PM CST	Severe Thunderstorm Warning	MOB	Greene, Wayne	42 min
Jan 21, 9:49 PM CST	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	41 min
Jan 21, 10:15 PM CST	Severe Thunderstorm Warning	MOB	Greene, Wayne	45 min
Jan 21, 10:27 PM CST	Special Weather Statement	MOB	Greene	48 min
Jan 21, 11:05 PM CST	Special Weather Statement	MOB	Wayne	40 min
Jan 21, 11:10 PM CST	Severe Thunderstorm Warning	MOB	Wayne	25 min
Jan 22, 5:23 AM CST	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	30 hr
Jan 22, 9:20 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	40 min
Jan 22, 10:08 AM CST	Special Weather Statement	MOB	George	52 min
Jan 22, 10:27 AM CST	Severe Thunderstorm Warning	MOB	George, Greene	33 min
Jan 22, 4:21 PM CST	River Flood Warning	MOB	George, Greene, Wayne	4 days

Nearby

Severe Thunderstorm Warnings in Mississippi, 2017 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.