Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS Mobile, AL

May 30, 2012Greene County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at May 30, 2012, 5:54 PM CDT for Greene County, Mississippi. It was in force for 32 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: May 30, 2012, 5:54 PM CDT (22:54 UTC)
Expired: May 30, 2012, 6:26 PM CDT
In force: 32 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Greene County, MS

The radar

The Mobile radar (KMOB), 68 km from the middle of the area, began a volume at 22:55 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 10.9 hours before the alert went out and 133 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: 1642 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 23 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.

721 
WUUS54 KMOB 302254
SVRMOB
MSC041-310000-
/O.NEW.KMOB.SV.W.0082.120530T2254Z-120531T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
554 PM CDT WED MAY 30 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN GREENE COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 700 PM CDT

* AT 550 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER
  SIZE HAIL AND DAMAGING WINDS OVER 60 MPH WAS LOCATED 13 MILES
  SOUTHWEST OF LEAKESVILLE...OR 4 MILES EAST OF MCLAIN...AND WAS
  NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  MCLAIN...

LAT...LON 3125 8863 3106 8856 3100 8882 3100 8883
      3104 8884 3121 8884
TIME...MOT...LOC 2254Z 337DEG 1KT 3108 8875

$$

1 follow-up statement

617 
WWUS54 KMOB 302326
SVSMOB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
626 PM CDT WED MAY 30 2012

MSC041-302337-
/O.CAN.KMOB.SV.W.0082.000000T0000Z-120531T0000Z/
GREENE MS-
626 PM CDT WED MAY 30 2012

...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED FOR
SOUTHWESTERN GREENE COUNTY...

AT 625 PM CDT...THE STORM THAT PROMPTED THE WARNING FOR SOUTHWESTERN
GREENE COUNTY HAS WEAKENED TO BELOW SEVERE LIMITS...THUS THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CALL (800) 284-9059.

LAT...LON 3125 8863 3106 8856 3100 8882 3100 8883
      3104 8884 3121 8884
TIME...MOT...LOC 2327Z 337DEG 1KT 3107 8875

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 4:16 PM CDT	Severe Thunderstorm Warning	MOB	George, Greene	59 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning in 2012

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.