Alert archive / Mississippi / Tornado Warnings in 2015

Tornado Warning 21, NWS Jackson, MS

August 17, 2015Covington County, Mississippi

NWS Jackson, MS issued this tornado warning at Aug 17, 2015, 4:03 PM CDT for Covington County, Mississippi. It was in force for 57 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 17, 2015, 4:03 PM CDT (21:03 UTC)
Expired: Aug 17, 2015, 5:00 PM CDT
In force: 57 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Covington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 83 km from the middle of the area, began a volume at 21:05 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.

What was reported inside it

Time	Report	Where	Remark
Aug 17, 4:12 PM CDT	TSTM WND DMG	3 Ssw Collins, MS	POWER POLES AND POWERLINES BLOWN DOWN ALONG SEMINARY WILLIAMSBURG ROAD. POSSIBLE TORNADO.
Aug 17, 4:14 PM CDT	TORNADO 0	4 Sw Collins, MS	TORNADO DOWNED NUMEROUS LARGE LIMBS AND SNAPPED OFF THE TOPS OF SEVERAL TREES ALONG ITS PATH. TWO POWERPOLES WERE DOWNED WHEN LIMBS FELL ON POWERLINES...TAKING THE POLES DOWN. A CARPORT WAS FLIPPED BY THE TORNADO. MAX EST WINDS 75 MPH...PATH LENGTH 2.8 MI...MA
Aug 17, 4:17 PM CDT	TSTM WND DMG	2 S Collins, MS	TREES DOWN AT MAYFIELD RD AND CRAFT RD. POSSIBLE TORNADO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.1 hours before the alert went out and 91 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: 276 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 658 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 69 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

348 
WFUS54 KJAN 172103
TORJAN
MSC031-172200-
/O.NEW.KJAN.TO.W.0021.150817T2103Z-150817T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
403 PM CDT MON AUG 17 2015

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN COVINGTON COUNTY IN SOUTHEASTERN MISSISSIPPI...

* UNTIL 500 PM CDT
    
* AT 403 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR COLLINS...MOVING NORTHEAST AT 20 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...
  COLLINS AROUND 415 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 3155 8962 3156 8964 3160 8969 3179 8953
      3180 8940 3164 8940 3154 8962
TIME...MOT...LOC 2103Z 226DEG 17KT 3161 8961 

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

$$

19

4 follow-up statements

178 
WWUS54 KJAN 172116
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
416 PM CDT MON AUG 17 2015

MSC031-172200-
/O.CON.KJAN.TO.W.0021.000000T0000Z-150817T2200Z/
COVINGTON MS-
416 PM CDT MON AUG 17 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHEASTERN COVINGTON COUNTY...
    
AT 415 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR 
COLLINS...MOVING NORTHEAST AT 15 MPH.

HAZARD...DAMAGING TORNADO. 

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO. 

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 TORNADO WILL BE NEAR...
  COLLINS AROUND 420 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 3158 8962 3163 8966 3179 8953 3180 8940
      3164 8940 3155 8959
TIME...MOT...LOC 2115Z 240DEG 12KT 3162 8957 

TORNADO...OBSERVED
HAIL...<.75IN

$$

19

592 
WWUS54 KJAN 172130
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
430 PM CDT MON AUG 17 2015

MSC031-172200-
/O.CON.KJAN.TO.W.0021.000000T0000Z-150817T2200Z/
COVINGTON MS-
430 PM CDT MON AUG 17 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHEASTERN COVINGTON COUNTY...
    
AT 429 PM CDT...A CONFIRMED TORNADO WAS LOCATED JUST SOUTHEAST OF 
COLLINS...MOVING NORTHEAST AT 15 MPH.

HAZARD...DAMAGING TORNADO. 

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO. 

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
NORTHEASTERN COVINGTON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 3160 8956 3175 8953 3178 8951 3180 8940
      3164 8940 3158 8953
TIME...MOT...LOC 2129Z 224DEG 10KT 3163 8953 

TORNADO...OBSERVED
HAIL...<.75IN

$$

19

067 
WWUS54 KJAN 172148
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
448 PM CDT MON AUG 17 2015

MSC031-172200-
/O.CON.KJAN.TO.W.0021.000000T0000Z-150817T2200Z/
COVINGTON MS-
448 PM CDT MON AUG 17 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR EAST
CENTRAL COVINGTON COUNTY...
    
AT 447 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED EAST OF COLLINS...MOVING NORTHEAST AT 20 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
EAST CENTRAL COVINGTON 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.

&&

LAT...LON 3163 8952 3169 8949 3171 8946 3174 8940
      3164 8940 3160 8949
TIME...MOT...LOC 2147Z 226DEG 17KT 3169 8946 

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

$$

19

393 
WWUS54 KJAN 172200
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
500 PM CDT MON AUG 17 2015

MSC031-172209-
/O.EXP.KJAN.TO.W.0021.000000T0000Z-150817T2200Z/
COVINGTON MS-
500 PM CDT MON AUG 17 2015

...THE TORNADO WARNING FOR EAST CENTRAL COVINGTON COUNTY WILL EXPIRE
AT 500 PM CDT...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING 
HAS BEEN CANCELLED. HOWEVER...DAMAGING WINDS REMAIN LIKELY AND A 
SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.

LAT...LON 3163 8952 3169 8949 3171 8946 3174 8940
      3164 8940 3160 8949
TIME...MOT...LOC 2157Z 226DEG 17KT 3169 8946 

$$

19

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 17, 3:42 PM CDT	Special Weather Statement	JAN	Covington	33 min
Aug 17, 4:58 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jones	62 min
Aug 17, 5:59 PM CDT	Severe Thunderstorm Warning	JAN	Jones	42 min

Nearby

Tornado Warnings in Mississippi, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.