Alert archive / Mississippi / Tornado Warnings in 2015

Tornado Warning 22, NWS Jackson, MS

August 17, 2015Noxubee County, Mississippi

NWS Jackson, MS issued this tornado warning at Aug 17, 2015, 7:58 PM CDT for Noxubee County, Mississippi. It was in force for 20 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 17, 2015, 7:58 PM CDT (00:58 UTC)
Expired: Aug 17, 2015, 8:18 PM CDT
In force: 20 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Noxubee County, MS

The radar

The Columbus AFB radar (KGWX), 91 km from the middle of the area, began a volume at 01:01 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

Jackson, MS (KJAN), launched 00:00Z, 1.0 hours before the alert went out and 155 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: 12 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1271 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

817 
WFUS54 KJAN 180058
TORJAN
MSC103-180200-
/O.NEW.KJAN.TO.W.0022.150818T0058Z-150818T0200Z/

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN NOXUBEE COUNTY IN EAST CENTRAL MISSISSIPPI...

* UNTIL 900 PM CDT
    
* AT 758 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR MASHULAVILLE...OR 16 MILES EAST OF
  LOUISVILLE...MOVING EAST AT 5 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 NOXUBEE 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 3312 8881 3320 8881 3323 8867 3312 8865
TIME...MOT...LOC 0058Z 252DEG 6KT 3316 8877 

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

$$

19

1 follow-up statement

942 
WWUS54 KJAN 180118
SVSJAN

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

MSC103-180128-
/O.CAN.KJAN.TO.W.0022.000000T0000Z-150818T0200Z/
NOXUBEE MS-
818 PM CDT MON AUG 17 2015

...THE TORNADO WARNING FOR NORTHWESTERN NOXUBEE COUNTY IS
CANCELLED...
    
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 3312 8881 3320 8881 3323 8867 3312 8865
TIME...MOT...LOC 0116Z 252DEG 6KT 3317 8873 

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 7:22 PM CDT	Special Weather Statement	JAN	Noxubee	38 min
Aug 17, 7:45 PM CDT	Severe Thunderstorm Warning	JAN	Noxubee, Winston	44 min
Aug 17, 8:23 PM CDT	Flash Flood Warning	JAN	Noxubee, Winston	2 hr
Aug 18, 2:25 PM CDT	Special Weather Statement	JAN	Copiah	35 min
Aug 18, 2:39 PM CDT	Special Weather Statement	JAN	Jones	51 min
Aug 18, 3:00 PM CDT	Special Weather Statement	JAN	Covington	45 min
Aug 18, 3:26 PM CDT	Special Weather Statement	JAN	Jones	34 min
Aug 18, 3:39 PM CDT	Special Weather Statement	JAN	Jones	36 min
Aug 18, 3:44 PM CDT	Special Weather Statement	JAN	Rankin	46 min
Aug 18, 4:29 PM CDT	Special Weather Statement	JAN	Scott	46 min
Aug 18, 5:11 PM CDT	Severe Thunderstorm Warning	JAN	Clay	34 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.