Alert archive / Mississippi / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 47, NWS Mobile, AL

January 21, 2017Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jan 21, 2017, 8:52 PM CST for Perry County, Wayne County, Mississippi. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 21, 2017, 8:52 PM CST (02:52 UTC)
Expired: Jan 21, 2017, 9:30 PM CST
In force: 38 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Perry County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 107 km from the middle of the area, began a volume at 02:56 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.

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, 3:29 PM CST	Tornado Watch	SPC	6 hr
Jan 21, 6:51 PM CST	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.9 hours before the alert went out and 146 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: 1036 J/kg
Mixed-layer CIN: -131 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

280 
WUUS54 KMOB 220252
SVRMOB
MSC111-153-220330-
/O.NEW.KMOB.SV.W.0047.170122T0252Z-170122T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
852 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...
  Northern Perry County in southeastern Mississippi...

* Until 930 PM CST

* At 852 PM CST, a severe thunderstorm was located near Purvis, or 13
  miles southwest of West Hattiesburg, moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Richton.

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

LAT...LON 3143 8915 3143 8894 3159 8894 3145 8878
      3143 8880 3143 8884 3140 8884 3118 8914
TIME...MOT...LOC 0252Z 226DEG 44KT 3114 8948 

HAIL...1.25IN
WIND...60MPH
 
$$

1 follow-up statement

845 
WWUS54 KMOB 220309
SVSMOB

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

MSC111-153-220330-
/O.CON.KMOB.SV.W.0047.000000T0000Z-170122T0330Z/
Wayne MS-Perry MS-
909 PM CST SAT JAN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST
FOR SOUTHWESTERN WAYNE AND NORTHERN PERRY COUNTIES...

At 908 PM CST, a severe thunderstorm was located near Sunrise, or
near Hattiesburg, moving northeast at 75 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Richton.

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 3159 8894 3145 8878
      3143 8880 3143 8884 3140 8884 3118 8914
TIME...MOT...LOC 0308Z 223DEG 67KT 3127 8924 

HAIL...1.25IN
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, 9:06 PM CST	Severe Thunderstorm Warning	MOB	Wayne	39 min
Jan 21, 9:25 PM CST	Severe Thunderstorm Warning	MOB	Greene, Perry, Wayne	50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.