Alert archive / Mississippi / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Jackson, MS

February 1, 2015Kemper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 1, 2015, 6:13 PM CST for Kemper County, Mississippi. It was in force for 47 min. 1 report 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: Feb 1, 2015, 6:13 PM CST (00:13 UTC)
Expired: Feb 1, 2015, 7:00 PM CST
In force: 47 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Kemper County, MS

The radar

The Columbus AFB radar (KGWX), 129 km from the middle of the area, began a volume at 00:15 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
Feb 1, 6:32 PM CST	TSTM WND DMG	3 Nw De Kalb, MS	ROOF BLOWN OFF A HOUSE ALONG NEELY TOWN RD. DELAYED REPORT.

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 00:00Z, 0.2 hours before the alert went out and 151 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: 256 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 802 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 311 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

215 
WUUS54 KJAN 020013
SVRJAN
MSC069-020100-
/O.NEW.KJAN.SV.W.0021.150202T0013Z-150202T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
613 PM CST SUN FEB 1 2015

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KEMPER COUNTY IN EAST CENTRAL MISSISSIPPI...

* UNTIL 700 PM CST

* AT 614 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  FORESTDALE...AND MOVING EAST AT 60 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...
  BLUFF SPRINGS AROUND 620 PM CST.
  DE KALB AROUND 630 PM CST.
  ELECTRIC MILLS AROUND 640 PM CST.

OTHER LOCATIONS IN THE WARNING INCLUDE SCOOBA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3258 8840 3259 8891 3292 8892 3293 8835
      3291 8834
TIME...MOT...LOC 0014Z 264DEG 54KT 3276 8893

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

$$

GRG

1 follow-up statement

832 
WWUS54 KJAN 020039
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
639 PM CST SUN FEB 1 2015

MSC069-020100-
/O.CON.KJAN.SV.W.0021.000000T0000Z-150202T0100Z/
KEMPER MS-
639 PM CST SUN FEB 1 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KEMPER COUNTY
UNTIL 700 PM CST...

AT 639 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR DE KALB...AND
MOVING EAST AT 55 MPH.

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

SOURCE...RADAR INDICATED.

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

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ELECTRIC MILLS AROUND 645 PM CST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3258 8840 3259 8891 3277 8867 3292 8866
      3293 8835 3291 8834
TIME...MOT...LOC 0039Z 265DEG 46KT 3279 8854

HAIL...0.88IN
WIND...60MPH

$$

GRG

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 1, 6:01 PM CST	Severe Thunderstorm Warning	JAN	Copiah, Simpson	74 min
Feb 1, 6:20 PM CST	Special Weather Statement	JAN	Franklin, Lawrence, Lincoln	60 min
Feb 1, 6:25 PM CST	Severe Thunderstorm Warning	JAN	Newton	39 min
Feb 1, 6:40 PM CST	Severe Thunderstorm Warning	JAN	Jasper, Smith	50 min
Feb 1, 6:54 PM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	38 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2015 Every severe thunderstorm warning 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.