Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 48, NWS Mobile, AL

August 30, 2017Perry County, Mississippi

NWS Mobile, AL issued this tornado warning at Aug 30, 2017, 11:49 AM CDT for Perry 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: Aug 30, 2017, 11:49 AM CDT (16:49 UTC)
Expired: Aug 30, 2017, 12:30 PM CDT
In force: 41 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Perry County, MS

The radar

The Mobile radar (KMOB), 103 km from the middle of the area, began a volume at 16:51 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
Aug 30, 10:22 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 4.8 hours before the alert went out and 134 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: 1853 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 550 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 13.7

Open this sounding in Storm Lab

The text

As transmitted.

604 
WFUS54 KMOB 301649
TORMOB
MSC111-301730-
/O.NEW.KMOB.TO.W.0048.170830T1649Z-170830T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
1149 AM CDT WED AUG 30 2017

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Northern Perry County in southeastern Mississippi...

* Until 1230 PM CDT
    
* At 1149 AM CDT, a severe thunderstorm capable of producing a
  tornado was located near Brooklyn, or 16 miles southeast of
  Hattiesburg, moving north at 25 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  New Augusta around 1210 PM CDT. 
  Richton around 1230 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3144 8914 3143 8884 3140 8884 3107 8904
      3108 8915
TIME...MOT...LOC 1649Z 199DEG 21KT 3112 8914 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Butts

3 follow-up statements

239 
WWUS54 KMOB 301703
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1203 PM CDT WED AUG 30 2017

MSC111-301730-
/O.CON.KMOB.TO.W.0048.000000T0000Z-170830T1730Z/
Perry MS-
1203 PM CDT WED AUG 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR
NORTHWESTERN PERRY COUNTY...
    
At 1202 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Belleville, moving north at 25 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Perry County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3143 8893 3115 8905 3115 8915 3144 8914
TIME...MOT...LOC 1702Z 193DEG 22KT 3121 8913 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Butts

773 
WWUS54 KMOB 301710
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1210 PM CDT WED AUG 30 2017

MSC111-301730-
/O.CON.KMOB.TO.W.0048.000000T0000Z-170830T1730Z/
Perry MS-
1210 PM CDT WED AUG 30 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 PM CDT FOR
NORTHWESTERN PERRY COUNTY...
    
At 1209 PM CDT, a severe thunderstorm capable of producing a tornado 
was located between Indian Springs and Belleville, moving north at 
25 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This tornadic thunderstorm will remain over mainly rural areas of
northwestern Perry County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Additional statements will be issued as conditions warrant.

&&

LAT...LON 3143 8893 3121 8903 3121 8915 3144 8914
TIME...MOT...LOC 1709Z 197DEG 22KT 3126 8912 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Butts

964 
WWUS54 KMOB 301727
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1227 PM CDT WED AUG 30 2017

MSC111-301737-
/O.EXP.KMOB.TO.W.0048.000000T0000Z-170830T1730Z/
Perry MS-
1227 PM CDT WED AUG 30 2017

...THE TORNADO WARNING FOR NORTHWESTERN PERRY COUNTY WILL EXPIRE AT
1230 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 600 PM CDT for southeastern
Mississippi.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mobile.

Additional statements will be issued as conditions warrant.

LAT...LON 3143 8893 3121 8903 3121 8915 3144 8914
TIME...MOT...LOC 1727Z 199DEG 21KT 3135 8908 

$$

Butts

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 10:26 AM CDT	Tornado Warning	MOB	Stone	19 min
Aug 30, 11:34 AM CDT	Tornado Warning	MOB	George	26 min
Aug 30, 11:59 AM CDT	Tornado Warning	MOB	George, Greene	46 min
Aug 30, 12:33 PM CDT	Severe Thunderstorm Warning	MOB	George	42 min
Aug 30, 12:59 PM CDT	Tornado Warning	MOB	Greene	22 min
Aug 30, 1:06 PM CDT	Severe Thunderstorm Warning	MOB	Greene	39 min
Aug 30, 1:10 PM CDT	Special Weather Statement	MOB	Perry, Stone	50 min
Aug 30, 1:20 PM CDT	Severe Thunderstorm Warning	MOB	Perry, Stone	40 min
Aug 30, 2:04 PM CDT	Special Weather Statement	MOB	Greene, Wayne	56 min
Aug 30, 5:49 PM CDT	Special Weather Statement	MOB	George	41 min
Aug 30, 6:41 PM CDT	Special Weather Statement	MOB	Greene	49 min
Aug 30, 6:51 PM CDT	Tornado Warning	MOB	Greene	39 min

Nearby

Tornado Warnings in Mississippi, 2017 Every tornado warning in 2017 Tornadoes 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.