Alert archive / Mississippi / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 3, NWS Mobile, AL

January 2, 2017Stone County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jan 2, 2017, 12:02 PM CST for Stone County, Mississippi. It was in force for 43 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 2, 2017, 12:02 PM CST (18:02 UTC)
Expired: Jan 2, 2017, 12:45 PM CST
In force: 43 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Stone County, MS

The radar

The Mobile radar (KMOB), 84 km from the middle of the area, began a volume at 18:03 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 2, 11:22 AM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.0 hours before the alert went out and 80 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: 1261 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 322 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

As transmitted.

778 
WUUS54 KMOB 021802
SVRMOB
MSC131-021845-
/O.NEW.KMOB.SV.W.0003.170102T1802Z-170102T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1202 PM CST MON JAN 2 2017

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Stone County in southeastern Mississippi...

* Until 1245 PM CST

* At 1201 PM CST, severe thunderstorms were located along a line
  extending from 9 miles west of Perkinston to 12 miles west of
  McHenry to 7 miles northwest of Kiln, moving northeast at 15 to 20
  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...
  Wiggins, Perkinston and McHenry. 

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 800 PM CST for southeastern
Mississippi.

LAT...LON 3091 8933 3091 8888 3078 8888 3073 8889
      3068 8889 3068 8924 3065 8924 3065 8934
TIME...MOT...LOC 1801Z 245DEG 13KT 3076 8930 3068 8934 3050 8951 

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

1 follow-up statement

323 
WWUS54 KMOB 021844
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1244 PM CST MON JAN 2 2017

MSC131-021853-
/O.EXP.KMOB.SV.W.0003.000000T0000Z-170102T1845Z/
Stone MS-
1244 PM CST MON JAN 2 2017

...THE SEVERE THUNDERSTORM WARNING FOR STONE COUNTY WILL EXPIRE AT
1245 PM CST...
            
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 will be allowed to expire.

A tornado watch remains in effect until 800 PM CST for southeastern
Mississippi.

LAT...LON 3091 8933 3091 8888 3078 8888 3073 8889
      3068 8889 3068 8924 3065 8924 3065 8934
TIME...MOT...LOC 1843Z 233DEG 50KT 3089 8905 3078 8899 3068 8898 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 1, 7:06 PM CST	Areal Flood Advisory	MOB	George	3 hr
Jan 2, 10:09 AM CST	Special Weather Statement	MOB	Greene	66 min
Jan 2, 10:12 AM CST	Tornado Warning	MOB	George, Greene	48 min
Jan 2, 10:51 AM CST	Severe Thunderstorm Warning	MOB	Greene	54 min
Jan 2, 11:49 AM CST	Special Weather Statement	MOB	Stone	41 min
Jan 2, 2:02 PM CST	Flash Flood Warning	MOB	George, Greene, Perry, Stone, Wayne	6 hr
Jan 2, 3:03 PM CST	Areal Flood Warning	MOB	George, Greene, Stone	24 hr
Jan 2, 3:07 PM CST	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone, Wayne	53 min
Jan 2, 3:59 PM CST	Severe Thunderstorm Warning	MOB	George, Greene	61 min
Jan 2, 5:56 PM CST	Areal Flood Warning	MOB	George, Greene, Perry, Stone, Wayne	24 hr

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.