Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS Mobile, AL

January 26, 2012Perry County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jan 26, 2012, 7:51 AM CST for Perry County, Mississippi. It was in force for 54 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: Jan 26, 2012, 7:51 AM CST (13:51 UTC)
Expired: Jan 26, 2012, 8:45 AM CST
In force: 54 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon

County Perry County, MS

The radar

The Mobile radar (KMOB), 108 km from the middle of the area, began a volume at 13:52 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 26, 4:18 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 1.9 hours before the alert went out and 135 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: 1176 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 354 m²/s²
0-3 km storm-relative helicity: 359 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

091 
WUUS54 KMOB 261351
SVRMOB
MSC111-261445-
/O.NEW.KMOB.SV.W.0002.120126T1351Z-120126T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
751 AM CST THU JAN 26 2012

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PERRY COUNTY IN SOUTHEAST MISSISSIPPI...

* UNTIL 845 AM CST

* AT 747 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 9 MILES SOUTH OF ELLISVILLE TO 13 MILES SOUTHEAST OF PETAL...
  AND MOVING EAST AT 25 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST THURSDAY FOR
SOUTHWESTERN ALABAMA AND NORTHWEST FLORIDA AND SOUTHEAST MISSISSIPPI.

&&

LAT...LON 3143 8915 3144 8914 3144 8903 3143 8899
      3111 8888 3111 8915
TIME...MOT...LOC 1351Z 269DEG 20KT 3148 8918 3120 8909

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 26, 8:36 AM CST	Severe Thunderstorm Warning	MOB	George, Stone	39 min
Jan 26, 8:42 AM CST	Severe Thunderstorm Warning	MOB	Wayne	63 min
Jan 26, 8:56 AM CST	Tornado Warning	MOB	Wayne	49 min
Jan 26, 9:15 AM CST	Severe Thunderstorm Warning	MOB	Greene	38 min
Jan 26, 9:20 AM CST	Tornado Warning	MOB	Greene	40 min
Jan 26, 9:49 AM CST	Areal Flood Advisory	MOB	George, Greene, Perry, Stone, Wayne	116 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.