Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 89, NWS New Orleans, LA

June 21, 2017Hancock County, Harrison County, Mississippi

NWS New Orleans, LA issued this tornado warning at Jun 21, 2017, 9:11 AM CDT for Hancock County, Harrison County, Mississippi. It was in force for 19 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 21, 2017, 9:11 AM CDT (14:11 UTC)
Expired
Jun 21, 2017, 9:30 AM CDT
In force
19 min
Issued by
NWS New Orleans, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Hancock County, MS, Harrison County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 10:24 PM CDTTornado WatchSPC12 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 2.2 hours before the alert went out and 40 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-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2017-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2017-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 485 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
262 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
465 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
485 m²/s²
0-3 km storm-relative helicity
506 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

As transmitted.

924 
WFUS54 KLIX 211411
TORLIX
MSC045-047-211445-
/O.NEW.KLIX.TO.W.0089.170621T1411Z-170621T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New Orleans LA
911 AM CDT WED JUN 21 2017

The National Weather Service in New Orleans has issued a

* Tornado Warning for...
  Southwestern Harrison County in southern Mississippi...
  Northeastern Hancock County in southern Mississippi...

* Until 945 AM CDT
    
* At 911 AM CDT, a severe thunderstorm capable of producing a tornado
  was located over Diamondhead, moving northwest at 30 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...
  Diamondhead around 920 AM CDT. 
  Kiln around 925 AM CDT. 

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 3045 8929 3037 8924 3030 8933 3047 8952
      3057 8937
TIME...MOT...LOC 1411Z 150DEG 27KT 3037 8932 

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

$$

98/SO
2 follow-up statements
139 
WWUS54 KLIX 211420
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
920 AM CDT WED JUN 21 2017

MSC045-047-211445-
/O.CON.KLIX.TO.W.0089.000000T0000Z-170621T1445Z/
Harrison MS-Hancock MS-
920 AM CDT WED JUN 21 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR WEST
CENTRAL HARRISON AND NORTHEASTERN HANCOCK COUNTIES...
    
At 919 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Diamondhead, moving northwest at 30 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
west central Harrison and northeastern Hancock Counties.

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 3044 8928 3037 8939 3047 8952 3057 8937
      3045 8929
TIME...MOT...LOC 1419Z 150DEG 27KT 3043 8936 

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

$$

98/SO
076 
WWUS54 KLIX 211430
SVSLIX

Severe Weather Statement
National Weather Service New Orleans LA
930 AM CDT WED JUN 21 2017

MSC045-047-211440-
/O.CAN.KLIX.TO.W.0089.000000T0000Z-170621T1445Z/
Harrison MS-Hancock MS-
930 AM CDT WED JUN 21 2017

...THE TORNADO WARNING FOR WEST CENTRAL HARRISON AND NORTHEASTERN
HANCOCK COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

A tornado watch remains in effect until 1000 AM CDT for southern
Mississippi.

LAT...LON 3044 8928 3037 8939 3047 8952 3057 8937
      3045 8929
TIME...MOT...LOC 1429Z 150DEG 27KT 3050 8941 

$$

98/SO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 9:21 PM CDTRiver Flood WarningLIXHancock48 hr
Jun 20, 10:09 PM CDTFlash Flood WarningLIXHancock, Harrison6 hr
Jun 21, 3:43 AM CDTFlash Flood WarningLIXHarrison3 hr
Jun 21, 4:59 AM CDTTornado WarningLIXHancock, Harrison31 min
Jun 21, 7:31 AM CDTTornado WarningLIXHancock29 min
Jun 21, 7:40 AM CDTTornado WarningLIXHancock35 min
Jun 21, 8:11 AM CDTTornado WarningLIXHarrison34 min
Jun 21, 8:12 AM CDTTornado WarningLIXHancock18 min
Jun 21, 8:30 AM CDTTornado WarningLIXHancock, Pearl River34 min
Jun 21, 8:42 AM CDTTornado Warning Tornado observedLIXHarrison33 min
Jun 21, 8:45 AM CDTTornado WarningLIXHancock, Harrison30 min
Jun 21, 2:35 PM CDTTornado WarningLIXHancock14 min
Jun 21, 3:21 PM CDTSevere Thunderstorm WarningLIXHancock54 min
Jun 21, 3:21 PM CDTTornado WarningLIXHarrison24 min
Jun 21, 4:00 PM CDTCoastal Flood AdvisoryLIX48 hr

Nearby

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