Alert archive / Mississippi / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 148, NWS Mobile, AL

April 30, 2017Greene County, Perry County, Wayne County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Apr 30, 2017, 11:34 AM CDT for Greene County, Perry County, Wayne County, Mississippi. It was in force for 41 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: Apr 30, 2017, 11:34 AM CDT (16:34 UTC)
Expired: Apr 30, 2017, 12:15 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Mobile radar (KMOB), 100 km from the middle of the area, began a volume at 16:35 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
Apr 30, 7:32 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.6 hours before the alert went out and 152 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: 1930 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 7.9

Open this sounding in Storm Lab

The text

As transmitted.

529 
WUUS54 KMOB 301634
SVRMOB
MSC041-111-153-301715-
/O.NEW.KMOB.SV.W.0148.170430T1634Z-170430T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
1134 AM CDT SUN APR 30 2017

The National Weather Service in Mobile has issued a

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

* Until 1215 PM CDT

* At 1134 AM CDT, severe thunderstorms were located along a line
  extending from near Stafford Springs to 9 miles southeast of 
  Lumberton, moving east at 25 mph. Wind damage has been reported 
  with this line of thunderstorms as it moved through previous 
  counties in Mississippi.

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

  SOURCE...Radar indicated. 

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

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

A tornado watch remains in effect until 300 PM CDT for southeastern
Mississippi. A tornado watch also remains in effect until 700 PM CDT
for southwestern Alabama.

LAT...LON 3143 8915 3143 8894 3182 8894 3185 8865
      3189 8847 3183 8847 3100 8879 3100 8884
      3091 8883 3091 8914
TIME...MOT...LOC 1634Z 260DEG 21KT 3182 8892 3091 8934 

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

Butts

1 follow-up statement

808 
WWUS54 KMOB 301652
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1152 AM CDT SUN APR 30 2017

MSC041-111-153-301715-
/O.CON.KMOB.SV.W.0148.000000T0000Z-170430T1715Z/
Perry MS-Wayne MS-Greene MS-
1152 AM CDT SUN APR 30 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM CDT
FOR PERRY...WAYNE AND WESTERN GREENE COUNTIES...

At 1151 AM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Goodwater to near Richton to near
Maxie, moving east at 25 mph.

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

SOURCE...Radar indicated. 

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

Locations impacted include...
Waynesboro, Richton, Clara, Beaumont, New Augusta and McLain. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly 
from severe thunderstorms. For your protection move to an interior 
room on the lowest floor of a building.

Additional statements will be issued as conditions warrant.

&&

A tornado watch remains in effect until 300 PM CDT for southeastern
Mississippi. A tornado watch also remains in effect until 700 PM CDT
for southwestern Alabama.

LAT...LON 3143 8915 3143 8894 3182 8894 3185 8865
      3189 8847 3183 8847 3100 8879 3100 8884
      3091 8883 3091 8914
TIME...MOT...LOC 1651Z 274DEG 23KT 3184 8881 3141 8890 3096 8925 

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

Butts

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 11:20 AM CDT	Special Weather Statement	MOB	George, Greene, Perry, Stone, Wayne	55 min
Apr 30, 12:16 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	44 min
Apr 30, 12:46 PM CDT	Areal Flood Advisory	MOB	George, Greene, Perry, Stone, Wayne	3 hr
Apr 30, 1:02 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	58 min
Apr 30, 1:06 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	39 min
Apr 30, 1:46 PM CDT	Severe Thunderstorm Warning	MOB	Greene, Wayne	59 min
Apr 30, 2:00 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	60 min
Apr 30, 4:09 PM CDT	Areal Flood Advisory	MOB	George	3 hr
Apr 30, 6:17 PM CDT	Flash Flood Watch	MOB	George, Greene	9 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.