Alert archive / Mississippi / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 310, NWS Jackson, MS

August 7, 2014Smith County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 7, 2014, 6:02 PM CDT for Smith County, Mississippi. It was in force for 43 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 7, 2014, 6:02 PM CDT (23:02 UTC)
Expired: Aug 7, 2014, 6:45 PM CDT
In force: 43 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Smith County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 73 km from the middle of the area, began a volume at 23:05 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.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.0 hours before the alert went out and 82 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: 1826 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 25 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.

683 
WUUS54 KJAN 072302
SVRJAN
MSC129-072345-
/O.NEW.KJAN.SV.W.0310.140807T2302Z-140807T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
602 PM CDT THU AUG 7 2014

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN SMITH COUNTY IN CENTRAL MISSISSIPPI...

* UNTIL 645 PM CDT

* AT 603 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  TAYLORSVILLE...AND MOVING SOUTHEAST AT 5 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  TAYLORSVILLE AROUND 645 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3180 8933 3180 8935 3179 8944 3179 8951
      3183 8958 3198 8947 3193 8932
TIME...MOT...LOC 2303Z 293DEG 4KT 3188 8948

HAIL...1.00IN
WIND...60MPH

$$

JC

1 follow-up statement

220 
WWUS54 KJAN 072324
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
624 PM CDT THU AUG 7 2014

MSC129-072345-
/O.CON.KJAN.SV.W.0310.000000T0000Z-140807T2345Z/
SMITH MS-
624 PM CDT THU AUG 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
SMITH COUNTY UNTIL 645 PM CDT...

AT 624 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTHWEST
OF TAYLORSVILLE...AND WAS NEARLY STATIONARY.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  TAYLORSVILLE AROUND 645 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3180 8933 3180 8935 3179 8944 3179 8951
      3183 8958 3198 8947 3193 8932
TIME...MOT...LOC 2324Z 284DEG 2KT 3188 8951

HAIL...0.75IN
WIND...60MPH

$$

JC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 1:28 AM CDT	Special Weather Statement	JAN	Lincoln	42 min
Aug 7, 2:28 PM CDT	Special Weather Statement	JAN	Oktibbeha	32 min
Aug 7, 2:44 PM CDT	Special Weather Statement	JAN	Clay	41 min
Aug 7, 2:47 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Noxubee, Oktibbeha	43 min
Aug 7, 3:04 PM CDT	Special Weather Statement	JAN	Neshoba	31 min
Aug 7, 3:19 PM CDT	Special Weather Statement	JAN	Lowndes	41 min
Aug 7, 3:39 PM CDT	Special Weather Statement	JAN	Kemper	31 min
Aug 7, 4:19 PM CDT	Special Weather Statement	JAN	Lauderdale	31 min
Aug 7, 5:09 PM CDT	Special Weather Statement	JAN	Clarke	31 min
Aug 7, 5:21 PM CDT	Special Weather Statement	JAN	Jasper	29 min
Aug 7, 6:31 PM CDT	Special Weather Statement	JAN	Covington	29 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2014 Every severe thunderstorm warning in 2014

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.