Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 101, NWS New Orleans, LA

June 29, 2017Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Jun 29, 2017, 7:47 PM CDT for Harrison County, Mississippi. It was in force for 28 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: Jun 29, 2017, 7:47 PM CDT (00:47 UTC)
Expired: Jun 29, 2017, 8:15 PM CDT
In force: 28 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Harrison County, MS

The radar

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 00:49 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 nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 0.8 hours before the alert went out and 67 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: 1614 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

282 
WFUS54 KLIX 300047
TORLIX
MSC047-300115-
/O.NEW.KLIX.TO.W.0101.170630T0047Z-170630T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
747 PM CDT THU JUN 29 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Southeastern Harrison County in southern Mississippi...

* Until 815 PM CDT
    
* At 747 PM CDT, a severe thunderstorm capable of producing a tornado
  was located between Long Beach and Gulfport, moving east at 10 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...
  Gulfport and Biloxi around 815 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Gulfport Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to 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 3036 8900 3033 8912 3042 8916 3046 8894
      3036 8890
TIME...MOT...LOC 0047Z 255DEG 9KT 3037 8910 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TD

2 follow-up statements

038 
WWUS54 KLIX 300104
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
804 PM CDT THU JUN 29 2017

MSC047-300115-
/O.CON.KLIX.TO.W.0101.000000T0000Z-170630T0115Z/
Harrison MS-
804 PM CDT THU JUN 29 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN HARRISON COUNTY...
    
At 803 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Gulfport, moving east at 15 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...
  Biloxi around 810 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Gulfport Airport.

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 3036 8901 3035 8904 3043 8909 3044 8908
      3046 8894 3044 8893 3036 8890
TIME...MOT...LOC 0103Z 255DEG 13KT 3039 8903 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

TD

016 
WWUS54 KLIX 300112
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
812 PM CDT THU JUN 29 2017

MSC047-300122-
/O.EXP.KLIX.TO.W.0101.000000T0000Z-170630T0115Z/
Harrison MS-
812 PM CDT THU JUN 29 2017

...THE TORNADO WARNING FOR SOUTHEASTERN HARRISON COUNTY WILL EXPIRE
AT 815 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.  However gusty winds
and heavy rain are still possible with this thunderstorm.

LAT...LON 3036 8901 3035 8904 3043 8909 3044 8908
      3046 8894 3044 8893 3036 8890
TIME...MOT...LOC 0112Z 255DEG 9KT 3040 8901 

$$

TD

The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:31 PM CDT	Areal Flood Advisory	LIX	Harrison	119 min
Jun 30, 3:28 PM CDT	Special Weather Statement	LIX	Pike	32 min
Jun 30, 3:30 PM CDT	Special Weather Statement	LIX	Marion	30 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.